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Note: This page contains sample records for the topic "organic polymers show" from the National Library of EnergyBeta (NLEBeta).
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they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


1

Organic Polymers Show Sunny Potential | Advanced Photon Source  

NLE Websites -- All DOE Office Websites (Extended Search)

A New Family of Quasicrystals A New Family of Quasicrystals Cool Muscles: Storing Elastic Energy for Flight A Further Understanding of Superconductivity New Family of Tiny Crystals Glow Bright in LED Lights How Serotonin Receptors Can Shape Drug Effects, from LSD to Migraine Medication Science Highlights Archives: 2013 | 2012 | 2011 | 2010 2009 | 2008 | 2007 | 2006 2005 | 2004 | 2003 | 2002 2001 | 2000 | 1998 | Subscribe to APS Science Highlights rss feed Organic Polymers Show Sunny Potential JUNE 25, 2013 Bookmark and Share Researchers at Rice and Pennsylvania State universities have created solar cells based on block copolymers, self-assembling organic materials that arrange themselves into distinct layers. Image courtesy of the Gomez Laboratory A new version of solar cells created by laboratories at the Rice and

2

Low band gap polymers Organic Photovoltaics  

E-Print Network (OSTI)

Low band gap polymers for Organic Photovoltaics Eva Bundgaard Ph.D. Dissertation Risø National Bundgaard Title: Low band gap polymers for Organic photovoltaics Department: The polymer department Report the area of organic photovoltaics are focusing on low band gap polymers, a type of polymer which absorbs

3

Decohesion Kinetics in Polymer Organic Solar Cells  

Science Journals Connector (OSTI)

Decohesion Kinetics in Polymer Organic Solar Cells ... We investigate the role of molecular weight (MW) of the photoactive polymer poly(3-hexylthiophene) (P3HT) on the temperature-dependent decohesion kinetics of bulk heterojunction (BHJ) organic solar cells (OSCs). ... fullerenes; solar cells; thin films; fracture; polymer ...

Christopher Bruner; Fernando Novoa; Stephanie Dupont; Reinhold Dauskardt

2014-11-04T23:59:59.000Z

4

Megahertz organic/polymer diodes  

DOE Patents (OSTI)

Featured is an organic/polymer diode having a first layer composed essentially of one of an organic semiconductor material or a polymeric semiconductor material and a second layer formed on the first layer and being electrically coupled to the first layer such that current flows through the layers in one direction when a voltage is applied in one direction. The second layer is essentially composed of a material whose characteristics and properties are such that when formed on the first layer, the diode is capable of high frequency rectifications on the order of megahertz rectifications such as for example rectifications at one of above 100KHz, 500KhZ, IMHz, or 10 MHz. In further embodiments, the layers are arranged so as to be exposed to atmosphere.

Katz, Howard Edan; Sun, Jia; Pal, Nath Bhola

2012-12-11T23:59:59.000Z

5

Structure-Function Relationships in Semiconducting Polymers for Organic Photovoltaics  

E-Print Network (OSTI)

properties for organic photovoltaics (OPVs). Space-chargePolymers for Organic Photovoltaics By David Fredric JoelPolymers for Organic Photovoltaics by David Fredric Joel

Kavulak, David Fredric Joel

2010-01-01T23:59:59.000Z

6

Organic Solar Cells as Polymer Waveguide Integrated Photodetectors  

Science Journals Connector (OSTI)

Abstract We report on the integration of an organic photodetector into a polymer waveguide. The photodetector is based on thin film organic solar cells using Zinc phtalocyanine and Fulleren C60 (ZnPc:C60) as photoactive material. This approach comprises the potential for an ease of production of active electro optical components on passive optical elements. By using organic materials low cost production of integrated devices on uneven surfaces becomes possible. In first experiments we show the potential of ZnPc:C60 solar cells as photodetectors at a wavelength of 635 nm. We perform simulations of this detectors put on the top surface of a polymer multi-mode waveguide. The simulation shows how light, which is guided through the waveguide can be efficiently absorbed by the photodetector without complex coupling structures.

Torsten Otto; Torsten Rabe; Sebastian Döring; Wolfgang Kowalsky

2014-01-01T23:59:59.000Z

7

Ammonia Capture in Porous Organic Polymers Densely Functionalized...  

NLE Websites -- All DOE Office Websites (Extended Search)

Ammonia Capture in Porous Organic Polymers Densely Functionalized with Brnsted Acid Groups Previous Next List Jeffrey F. Van Humbeck, Thomas M. McDonald, Xiaofei Jing, Brian M....

8

Structure-Function Relationships in Semiconducting Polymers for Organic Photovoltaics  

E-Print Network (OSTI)

fundamental physics behind how conjugated organic molecules the optical and electronicFundamental investigations of how synthetic molecular manipulation alters the electronicfundamental operating mechanism of organic photovoltaic devices. New conjugated polymers were characterized and their optical and electronic

Kavulak, David Fredric Joel

2010-01-01T23:59:59.000Z

9

Metallic Nanoantennae and their Use in Organic-Polymer Photovoltaics  

Science Journals Connector (OSTI)

Organic photovoltaics, particularly bulk heterojunction devices, have shown...1, 2]. One of the main limitations of these designs is the low charge carrier mobility of the polymer blend. This leads to losses due ...

Eric Peterson; Patrick N. Sisco; Catherine J. Murphy…

2011-03-01T23:59:59.000Z

10

E-Print Network 3.0 - aligned organic polymer Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

of fullerenes in polymers is of practical interest because of its role in organic solar cell... miscibility of the fullerene with one of the polymers leading to better...

11

The Organic Chemistry of Conducting Polymers  

SciTech Connect

For the last several years, we have examined the fundamental principles of conduction in one-dimensional systems, i.e., molecular “wires”. It is, of course, widely recognized that such systems, as components of electronically conductive materials, function in a two- and three-dimensional milieu. Thus interchain hopping and grain-boundary resistivity are limiting conductivity factors in highly conductive materials, and overall conductivity is a function of through-chain and boundary hopping. We have given considerable attention to the basic principles underlying charge transport (the “rules of the game”) in two-dimensional systems by using model systems which allow direct observation of such processes, including the examination of tunneling and hopping as components of charge transfer. In related work, we have spent considerable effort on the chemistry of conjugated heteropolymers, most especially polythiophens, with the aim of using these most efficient of readily available electroactive polymers in photovoltaic devices.

Tolbert, Laren Malcolm [Georgia Institute of Technology

2014-12-01T23:59:59.000Z

12

Oxidative chemical vapor deposition of semiconducting polymers and their use In organic photovoltaics  

E-Print Network (OSTI)

Organic photovoltaics (OPVs) have received significant interest for their potential low cost, high mechanical flexibility, and unique functionalities. OPVs employing semiconducting polymers in the photoactive layer have ...

Borrelli, David Christopher

2014-01-01T23:59:59.000Z

13

SIMULATION OF GEOMETRY AND SHADOW EFFECTS IN 3D ORGANIC POLYMER SOLAR CELLS  

E-Print Network (OSTI)

levels of Solar panels and new production capacity is driving solar PV prices lower and thereby, bringingSIMULATION OF GEOMETRY AND SHADOW EFFECTS IN 3D ORGANIC POLYMER SOLAR CELLS OF THE THESIS Simulation of Geometry and Shadow Effects in 3D Organic Polymer Solar Cells by Mihir Prakashbhai

Kassegne, Samuel Kinde

14

Self-organized stiffness in regular fractal polymer structures  

Science Journals Connector (OSTI)

We investigated membrane-like polymer structures of fractal connectivity such as Sierpinski gaskets and Sierpinski carpets applying the bond fluctuation model in three dimensions. Without excluded volume (phantom), both polymeric fractals obey Gaussian elasticity on larger scales determined by their spectral dimension. On the other hand, the swelling effect due to excluded volume is rather distinct between the two polymeric fractals: Self-avoiding Sierpinski gaskets can be described using a Flory-type mean-field argument. Sierpinski carpets having a spectral dimension closer to perfect membranes are significantly more strongly swollen than predicted. Based on our simulation results it cannot be excluded that Sierpinski carpets in athermal solvent show a flat phase on larger scales. We tested the self-consistency of Flory predictions using a virial expansion to higher orders. From this we conclude that the third virial coefficient contributes marginally to Sierpinski gaskets, but higher order virial coefficients are relevant for Sierpinski carpets.

Marco Werner and Jens-Uwe Sommer

2011-05-16T23:59:59.000Z

15

Chemical anchoring of organic conducting polymers to semiconducting surfaces  

DOE Patents (OSTI)

According to the present invention, an improved method of coating electrodes with conductive polymer films and/or preselected catalysts is provided. The charge-conductive polymer is covalently or coordinatively attached to the electrode surface to strengthen the adhesion characteristics of the polymer to the electrode surface or to improve charge-conductive properties between the conductive polymer and the electrode surface. Covalent or coordinative attachment is achieved by a number of alternative methods including covalently or coordinatively attaching the desired monomer to the electrode by means of a suitable coupling reagent and, thereafter, electrochemically polymerizing the monomer in situ.

Frank, Arthur J. (Lakewood, CO); Honda, Kenji (Wheatridge, CO)

1984-01-01T23:59:59.000Z

16

Chemical anchoring of organic conducting polymers to semiconducting surfaces  

DOE Patents (OSTI)

According to the present invention, an improved method of coating electrodes with conductive polymer films and/or preselected catalysts is provided. The charge conductive polymer is covalently or coordinatively attached to the electrode surface to strengthen the adhesion characteristics of the polymer to the electrode surface or to improve charge conductive properties between the conductive polymer and the electrode surface. Covalent or coordinative attachment is achieved by a number of alternative methods including covalently or coordinatively attaching the desired monomer to the electrode by means of a suitable coupling reagent and, thereafter, electrochemically polymerizing the monomer in situ.

Frank, A.J.; Honda, K.

1984-01-01T23:59:59.000Z

17

The Design of Organic Polymers and Small Molecules to Improve the Efficiency of Excitonic Solar Cells  

E-Print Network (OSTI)

J. The physics of solar cells; Imperial College Press,for organic polymer solar cells investigated to date. TheHarvesting in Dye-Sensitized Solar Cells Through the Use of

Armstrong, Paul Barber

2010-01-01T23:59:59.000Z

18

Structure-Function Relationships in Semiconducting Polymers for Organic Photovoltaics  

E-Print Network (OSTI)

mechanism by which organic solar cells operate, and then tomechanism of an organic solar cell. (1) Absorption ofthe improvement of organic solar cells. The photophysics of

Kavulak, David Fredric Joel

2010-01-01T23:59:59.000Z

19

Conjugated Polymer Design and Engineering for Organic Electronics  

E-Print Network (OSTI)

conversion efficiencies in organic solar cells is reported.operation of an organic solar cell and the correspondingcarrier mobility for organic solar cells for minimizing

Woo, Claire Hoi Kar

2011-01-01T23:59:59.000Z

20

An electrocyclic strategy to poly(triarylmethyl radical) polymers: Potential organic ferromagnets  

SciTech Connect

Recent interest in organic ferromagnetism has been stimulated by the idea that large poly(triarylmethyl radical) polymers in which the radical centers are connected by [open quotes]meta[close quotes]-aryl groups may possess ferromagnetic properties. However, synthesis of these polyradicals has been limited by stepwise methods that are unsuitable for the preparation of large polymers. This limitation represents a primary challenge confronting the field. The authors have developed the first polymeric strategy to poly (m-triarylmethyl radical) precursors that involves an electrocyclic formation of the [open quotes]meta[close quotes]-substituted triarylmethyl chloride repeating unit from a polypropynol precursor. Poly[(E)-6-[beta]-chloroethenyl-1,3-phenylene-1-phenylpropynol-1,3-ylene] was prepared by palladium-catalyzed coupling of a bifunctional acetylene-aryl iodide monomer. The stable polymer reacted with thionyl chloride to form an unstable polychloroallene intermediate that underwent an electrocyclic conversion to the polyradical precursor, poly(1-chloro-2,7-naphthalenechlorobenzylidene). The reduced polyradicals exhibited properties of radical-radical coupling, and preparation of a second generation polymer that would overcome this problem has been initiated. The polymeric strategy was based on model studies that showed that (E)-3-(2-[beta]-chloroethenylphenyl)-1,1-diphenylpropynol, when converted to the corresponding chloroallene with thionyl chloride, underwent an electrocyclic conversion to [beta]-(1-chlornaphthyl)diphenylmethyl chloride. The strategy expanded upon the use of triarylpropynes as precursors to triarylmethyl chlorides, and extension of both approaches to higher analogs was demonstrated with dimeric systems. The electrocyclic processes were found to occur only for the trans-vinyl chlorides; the cis-isomers were found to undergo an alternative concerted cyclization to benzofluorene products.

Morelli, J.P.

1992-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "organic polymers show" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

Thiophene Based Donor/Acceptor Conjugated Polymers for Organic Photovoltaics Brian Doyle, Rutgers University, SURF Fellow 2010  

E-Print Network (OSTI)

Thiophene Based Donor/Acceptor Conjugated Polymers for Organic Photovoltaics Brian structure. These organic photovoltaics have the advantages of large scale processing groups on electrochemical properties and application to organic photovoltaics. Synthesis

Li, Mo

22

Lithium inclusion in indium metal-organic frameworks showing increased surface area and hydrogen adsorption  

SciTech Connect

Investigation of counterion exchange in two anionic In-Metal-Organic Frameworks (In-MOFs) showed that partial replacement of disordered ammonium cations was achieved through the pre-synthetic addition of LiOH to the reaction mixture. This resulted in a surface area increase of over 1600% in (Li [In(1,3 ? BDC){sub 2}]){sub n} and enhancement of the H{sub 2} uptake of approximately 275% at 80?000 Pa at 77 K. This method resulted in frameworks with permanent lithium content after repeated solvent exchange as confirmed by inductively coupled plasma mass spectrometry. Lithium counterion replacement appears to increase porosity after activation through replacement of bulkier, softer counterions and demonstrates tuning of pore size and properties in MOFs.

Bosch, Mathieu; Zhang, Muwei; Feng, Dawei; Yuan, Shuai; Wang, Xuan [Department of Chemistry, Texas A and M University, College Station, Texas 77842 (United States); Chen, Ying-Pin [Department of Materials Science and Engineering, Texas A and M University, College Station, Texas 77842 (United States); Zhou, Hong-Cai, E-mail: zhou@mail.chem.tamu.edu [Department of Chemistry, Texas A and M University, College Station, Texas 77842 (United States); Department of Materials Science and Engineering, Texas A and M University, College Station, Texas 77842 (United States)

2014-12-01T23:59:59.000Z

23

Conjugated Polymer Design and Engineering for Organic Electronics  

E-Print Network (OSTI)

in low-cost thin-film photovoltaic cells. Importantly, SubNcefficient organic photovoltaic cells with power conversionSubNc films in organic photovoltaic cells was evaluated in

Woo, Claire Hoi Kar

2011-01-01T23:59:59.000Z

24

Dry formation of polymer hole injection layer for top emitting organic light emitting diodes  

Science Journals Connector (OSTI)

Dry formation of polymer hole injection layer is introduced as an effective method for improving the performance of top emitting organic light emitting diodes (TOLEDs). This method involves transferring a metal/polymer bilayer to the surface of organic layers of the device by pressing. An added advantage of this method is the ability to pattern the anode in the transfer process. Fabrication of the inverted TOLED by this method results in a drastic reduction of the turn-on voltage from 14.5 to 6.5 V when compared with a reference.

Soon-min Seo; Jong H. Kim; Hong H. Lee

2006-01-01T23:59:59.000Z

25

Electroluminescence in ion gel gated organic polymer semiconductor transistors  

E-Print Network (OSTI)

Harsha (N. Shastri), without whom I wouldn’t call myself complete, and am filled with gratitude to the cause that has brought us together, be it the god or that nature of probability function or the free will. Abstract This thesis reports the light... . The presence of a positive or negative charge causes a local structural relaxation of the polymer chain around the charge due to electron-phonon coupling similar to that of an exciton. This quasi-particle (spin = 1/2) of a charge and a lattice distortion...

Bhat, Shrivalli

2011-07-12T23:59:59.000Z

26

Highly efficient carbon dioxide capture with a porous organic polymer impregnated with  

E-Print Network (OSTI)

Highly efficient carbon dioxide capture with a porous organic polymer impregnated environmental crises such as global warming and ocean acidication, efficient carbon dioxide (CO2) capture As CO2 capture mate- rials, numerous solid adsorbents such as silica5 and carbon materials,6 metal

Paik Suh, Myunghyun

27

Self-Organization in Catalyst Layers of Polymer Electrolyte Fuel Cells  

Science Journals Connector (OSTI)

Self-Organization in Catalyst Layers of Polymer Electrolyte Fuel Cells ... These insights are highly valuable for the structural design of catalyst layers with optimized performance and stability. ... The foremost objective in optimizing the composition and structure of CLs is to provide the most uniform distributions of reactants and reaction rates possible and, thus, attain the highest catalyst utilizations and voltage efficiencies. ...

Kourosh Malek; Michael Eikerling; Qianpu Wang; Titichai Navessin; Zhongsheng Liu

2007-08-17T23:59:59.000Z

28

Conjugated Polymer Design and Engineering for Organic Electronics  

E-Print Network (OSTI)

power conversion efficiency (PCE) of an organic solar cellpower conversion efficiency (PCE or ?) at a given incident3.9%, 3.8%, and 3.8% peak PCE respectively at AM 1.5G with

Woo, Claire Hoi Kar

2011-01-01T23:59:59.000Z

29

Solution processable organic polymers and small molecules for bulk?heterojunction solar cells: A review  

Science Journals Connector (OSTI)

Solution processed bulk heterojunction (BHJ) organic solar cells (OSCs) have gained wide interest in past few years and are established as one of the leading next generation photovoltaic technologies for low cost power production. Power conversion efficiencies up to 6% and 6.5% have been reported in the literature for single layer and tandem solar cells respectively using conjugated polymers. A recent record efficiency about 8.13% with active area of 1.13 cm 2 has been reported. However Solution processable small molecules have been widely applied for photovoltaic (PV) devices in recent years because they show strong absorption properties and they can be easily purified and deposited onto flexible substrates at low cost. Introducing different donor and acceptor groups to construct donor—acceptor (D—A) structure small molecules has proved to be an efficient way to improve the properties of organic solar cells (OSCs). The power conversion efficiency about 4.4 % has been reported for OSCs based on the small molecules. This review deals with the recent progress of solution processable D—A structure small molecules and discusses the key factors affecting the properties of OSCs based on D—A structure small molecules: sunlight absorption charge transport and the energy level of the molecules.

G. D. Sharma

2011-01-01T23:59:59.000Z

30

Research on the electronic and optical properties of polymer and other organic molecular thin films  

SciTech Connect

The main goal of the work is to find materials and methods of optimization of organic layered electroluminescent cells and to study such properties of polymers and other organic materials that can be used in various opto-electronic devices. The summary of results obtained during the first year of work is presented. They are: (1) the possibility to produce electroluminescent cells using a vacuum deposition photoresist technology for commercial photoresists has been demonstrated; (2) the idea to replace the polyaryl polymers by other polymers with weaker hole conductivity for optimization of electroluminescent cells with ITO-Al electrodes has been suggested. The goal is to obtain amorphous processable thin films of radiative recombination layers in electroluminescent devices; (3) procedures of preparation of high-quality vacuum-deposited poly (p-phenylene) (PPP) films on various substrates have been developed; (4) it was found for the first time that the fluorescence intensity of PPP films depends on the degree of polymerization; (5) the role of interfaces between organic compounds, on one side, and metals or semiconductors, on the other side, has been studied and quenching of the fluorescence caused by semiconductor layer in thin sandwiches has been observed; (6) studies of the dynamics of photoexcitations revealed the exciton self-trapping in quasi-one-dimensional aggregates; and (7) conditions for preparation of highly crystalline fullerene C{sub 60} films by vacuum deposition have been found. Composites of C{sub 60} with conjugated polymers have been prepared.

NONE

1997-02-01T23:59:59.000Z

31

New N-Type Polymers for Organic Photovoltaics: Cooperative Research and Development Final Report, CRADA Number CRD-06-177  

SciTech Connect

This CRADA will develop improved thin film organic solar cells using a new n-type semiconducting polymer. High efficiency photovoltaics (PVs) based on inorganic semiconductors have good efficiencies (up to 30%) but are extremely expensive to manufacture. Organic PV technology has the potential to overcome this problem through the use of high-throughput production methods like reel-to-reel printing on flexible substrates. Unfortunately, today's best organic PVs have only a few percent efficiency, a number that is insufficient for virtually all commercial applications. The limited choice of stable n-type (acceptor) organic semiconductor materials is one of the key factors that prevent the further improvement of organic PVs. TDA Research, Inc. (TDA) previously developed a new class of electron-deficient (n-type) conjugated polymers for use in organic light emitting diodes (OLEDs). During this project TDA in collaboration with the National Renewable Energy Laboratory (NREL) will incorporate these electron-deficient polymers into organic photovoltaics and investigate their performance. TDA Research, Inc. (TDA) is developing new materials and polymers to improve the performance of organic solar cells. Materials being developed at TDA include spin coated transparent conductors, charge injection layers, fullerene derivatives, electron-deficient polymers, and three-phase (fullerene/polythiophene/dye) active layer inks.

Olson, D.

2014-08-01T23:59:59.000Z

32

Photo-induced charge transfer across the interface between organic molecular crystals and polymers  

E-Print Network (OSTI)

Photo-induced charge transfer of positive and negative charges across the interface between an ordered organic semiconductor and a polymeric insulator is observed in the field-effect experiments. Immobilization of the transferred charge in the polymer results in a shift of the field-effect threshold of polaronic conduction along the interface in the semiconductor, which allows for direct measurements of the charge transfer rate. The transfer occurs when the photon energy exceeds the absorption edge of the semiconductor. The direction of the transverse electric field at the interface determines the sign of the transferred charge; the transfer rate is controlled by the field magnitude and light intensity.

V. Podzorov; M. E. Gershenson

2004-11-23T23:59:59.000Z

33

Toward High-Performance Organic-Inorganic Hybrid Solar Cells: Bringing Conjugated Polymers and Inorganic Nanocrystals in Close  

E-Print Network (OSTI)

to traditional silicon solar cells due to the capacity of producing high- efficiency solar energy in a cost these advantages and progress, organic-inorganic hybrid solar cells still exhibit much lower PCEs (iToward High-Performance Organic-Inorganic Hybrid Solar Cells: Bringing Conjugated Polymers

Lin, Zhiqun

34

The conformational evolution of elongated polymer solutions tailors the polarization of light-emission from organic nanofibers  

E-Print Network (OSTI)

Polymer fibers are currently exploited in tremendously important technologies. Their innovative properties are mainly determined by the behavior of the polymer macromolecules under the elongation induced by external mechanical or electrostatic forces, characterizing the fiber drawing process. Although enhanced physical properties were observed in polymer fibers produced under strong stretching conditions, studies of the process-induced nanoscale organization of the polymer molecules are not available, and most of fiber properties are still obtained on an empirical basis. Here we reveal the orientational properties of semiflexible polymers in electrospun nanofibers, which allow the polarization properties of active fibers to be finely controlled. Modeling and simulations of the conformational evolution of the polymer chains during electrostatic elongation of semidilute solutions demonstrate that the molecules stretch almost fully within less than 1 mm from jet start, increasing polymer axial orientation at the jet center. The nanoscale mapping of the local dichroism of individual fibers by polarized near-field optical microscopy unveils for the first time the presence of an internal spatial variation of the molecular order, namely the presence of a core with axially aligned molecules and a sheath with almost radially oriented molecules. These results allow important and specific fiber properties to be manipulated and tailored, as here demonstrated for the polarization of emitted light.

Andrea Camposeo; Israel Greenfeld; Francesco Tantussi; Maria Moffa; Francesco Fuso; Maria Allegrini; Eyal Zussman; Dario Pisignano

2014-07-30T23:59:59.000Z

35

Sputtered Nickel Oxide Thin Film for Efficient Hole Transport Layer in Polymer-Fullerene Bulk-Heterojunction Organic Solar Cell  

SciTech Connect

Bulk-heterojunction (BHJ) organic photovoltaics (OPV) are very promising thin film renewable energy conversion technologies due to low production cost by high-throughput roll-to-roll manufacturing, an expansive list of compatible materials, and flexible device fabrication. An important aspect of OPV device efficiency is good contact engineering. The use of oxide thin films for this application offers increased design flexibility and improved chemical stability. Here we present our investigation of radio frequency magnetron sputtered nickel oxide (NiO{sub x}) deposited from oxide targets as an efficient, easily scalable hole transport layer (HTL) with variable work-function, ranging from 4.8 to 5.8 eV. Differences in HTL work-function were not found to result in statistically significant changes in open circuit voltage (V{sub oc}) for poly(3-hexylthiophene):[6,6]-phenyl-C{sub 61}-butyric acid methyl ester (P3HT:PCBM) BHJ device. Ultraviolet photoemission spectroscopy (UPS) characterization of the NiO{sub x} film and its interface with the polymer shows Fermi level alignment of the polymer with the NiO{sub x} film. UPS of the blend also demonstrates Fermi level alignment of the organic active layer with the HTL, consistent with the lack of correlation between V{sub oc} and HTL work-function. Instead, trends in j{sub sc}, V{sub oc}, and thus overall device performance are related to the surface treatment of the HTL prior to active layer deposition through changes in active layer thickness.

Widjonarko, N. E.; Ratcliff, E. L.; Perkins, C. L.; Sigdel, A. K.; Zakutayev, A.; Ndione, P. F.; Gillaspie, D. T.; Ginley, D. S.; Olson, D. C.; Berry, J. J.

2012-03-01T23:59:59.000Z

36

Photo-Curable Polymer Blend Dielectrics for Advancing Organic Field-Effect Transistor Applications  

SciTech Connect

A solution method of photo-curable and -patternable polymer gate dielectrics was introduced by using blend solutions of poly(4-dimethylsilyl styrene) (PDMSS) and poly(melamine-co-formaldehyde) acrylate (PMFA). The fabrication was optimized to produce a smooth hydrophobic gate dielectric with good insulating and solvent-resistant properties. On the optimized PDMSS/PMFA blend gate dielectric, pentacene could grow into highly ordered structure, showing high electric performances for the resulting OFETs, as well as PTCDI-C13 and TES-ADT.

S Kim; K Hong; M Jang; J Jang; J Anthony; H Yang; C Park

2011-12-31T23:59:59.000Z

37

Preparation of dielectrics HR mirrors from colloidal oxide suspensions containing organic polymer binders  

SciTech Connect

Colloidal suspensions of oxides have been used to prepare dielectric HR (high reflective) mirrors, specifically for high power fusion case applications, on substrates up to 38 cm square using a meniscus coater. These coatings consist of porous quarterwave layers of alternating high and low refractive index oxides. Silica was used as the low index oxide and AlOOH, ZrO{sub 2}, or HfO{sub 2} as the high index material. Coatings were weak because of low particle-to-particle adhesion. Use of organic polymer binders in the high index component was found to increase strength, thereby improving the laser damage threshold and also reducing the number of layers required for 99% reflection due to increased refractive index.

Thomas, I.M.

1994-07-19T23:59:59.000Z

38

Analytical and Numerical Study of Photocurrent Transients in Organic Polymer Solar Cells  

E-Print Network (OSTI)

This article is an attempt to provide a self consistent picture, including existence analysis and numerical solution algorithms, of the mathematical problems arising from modeling photocurrent transients in Organic-polymer Solar Cells (OSCs). The mathematical model for OSCs consists of a system of nonlinear diffusion-reaction partial differential equations (PDEs) with electrostatic convection, coupled to a kinetic ordinary differential equation (ODE). We propose a suitable reformulation of the model that allows us to prove the existence of a solution in both stationary and transient conditions and to better highlight the role of exciton dynamics in determining the device turn-on time. For the numerical treatment of the problem, we carry out a temporal semi-discretization using an implicit adaptive method, and the resulting sequence of differential subproblems is linearized using the Newton-Raphson method with inexact evaluation of the Jacobian. Then, we use exponentially fitted finite elements for the spatial...

de Falco, Carlo; Verri, Maurizio; 10.1016/j.cma.2010.01.018

2012-01-01T23:59:59.000Z

39

Sulfides organic polymer: Novel cathode active material for rechargeable lithium batteries  

Science Journals Connector (OSTI)

Two novel sulfide polymers, poly(2-phenyl-1,3-dithiolane) and poly[1,4-di(1,3-dithiolan-2-yl)benzene], were prepared via facile oxidative-coupling polymerization under ambient conditions, characterized by FT-IR, XRD, TGA and elemental analysis, and were tested as cathode materials in rechargeable lithium battery. The charge–discharge tests showed that the specific capacity of poly[1,4-di(1,3-dithiolan-2-yl)benzene)] was 378 mAh g?1 at the third cycle, and retained at 300 mAh g?1 after 20 cycles. The specific capacity of poly(2-phenyl-1,3-dithiolane) was 117 mAh g?1 at the second cycle, and retained at 100 mAh g?1 after 20 cycles. The results indicated that thiolane group could be used as cathode active function group for lithium secondary batteries and the novel electrode reaction is proposed tentatively.

Jing Yu Zhang; Ling Bo Kong; Li Zhi Zhan; Jing Tang; Hui Zhan; Yun Hong Zhou; Cai Mao Zhan

2007-01-01T23:59:59.000Z

40

Polymer and organic solar cells viewed as thin film technologies: What it will take for them to become a success outside academia  

Science Journals Connector (OSTI)

Abstract The polymer and organic solar cell technology is critically presented in the context of other thin film technologies with a specific focus on what it will take to make them a commercial success. The academic success of polymer and organic solar cells far outweigh any other solar cell technology when judging by the number of scientific publications whereas the application of polymer and organic solar cells in real products is completely lacking. This aspect is viewed as a sign of the polymer and organic solar cell field as being more complex and less mature and it raises the question of whether an organic analog to a successful inorganic technology is forcibly needed and indeed whether it is at all worth exploring beyond academia.

Frederik C. Krebs; Mikkel Jørgensen

2013-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "organic polymers show" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

Ag(I) Ion Functionalized Porous Organic Polymers As a New Platform for Highly Selective Adsorption of Ethylene over Ethane  

SciTech Connect

We report herein a strategy of incorporating air stable Ag(I) ions into water stable, high surface area porous organic polymer (POP) affording significant increase in ethylene uptake capacity and extremely high Qst for ethylene (over 100 kJ/mol at low ethylene load-ing) as illustrated in the context of Ag(I) ion functionalized PAF-1, PAF-1-SO3Ag. IAST calculations using single-component-isotherm data and equimolar ethylene/ethane ratio at 296 K reveal PAF-1-SO3Ag shows exceptionally high ethylene/ethane adsorption selectivi-ty (Sads: 27 to 125), far surpassing benchmark zeolite and any other MOF reported in literature. This alongside excellent water/air stability, high ethylene uptake capacity, and mild regeneration requirements make PAF-1-SO3Ag hold promise for adsorption-based eth-ylene/ethane separations, paving a way to develop Ag(I) ion function-alized POPs as a new platform for highly selective adsorption of eth-ylene over ethane.

LI, Baiyan [University of South Florida, Tampa; Zhang, Yiming [University of South Florida, Tampa; Ma, Dingxuan [State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, Jilin University; Wu, Zili [ORNL; Ma, Shengqian [University of South Florida, Tampa

2014-01-01T23:59:59.000Z

42

Self-organized Nano-lens Arrays by Intensified Dewetting of Electron Beam Modified Polymer Thin-films  

E-Print Network (OSTI)

Sub-100 nm polymeric spherical plano-convex nano-lens arrays are fabricated using short electron beam exposures to selectively modify the ultrathin (nano-lenses. The intensified self-organized dewetting under a water-organic solvent mixture overcomes the limitations on surface tension and dewetting force and thus facilitates the formation of sub-100 nm diameter polymer nanolenses of tunable curvature. By varying the extent of e-beam exposure, various configurations from isolated to connected nano-lens arrays can be fabricated.

Ankur Verma; Ashutosh Sharma

2011-09-18T23:59:59.000Z

43

The Design of Organic Polymers and Small Molecules to Improve the Efficiency of Excitonic Solar Cells  

E-Print Network (OSTI)

bulk heterojunction organic solar cells, blends of a p-typecells, including organic solar cells and dye-sensitizedin a bilayer organic solar cell. At top is a cross section

Armstrong, Paul Barber

2010-01-01T23:59:59.000Z

44

Miniaturized Low-power Electro-optic Modulator Based on Silicon Integrated Nanophotonics and Organic Polymers  

E-Print Network (OSTI)

We design and demonstrate a compact, low-power, low-dispersion and broadband optical modulator based on electro-optic (EO) polymer refilled silicon slot photonic crystal waveguide (PCW). The EO polymer is engineered for large EO activity and near-infrared transparency. The half-wave switching-voltage is measured to be V{\\pi}=0.97V over optical spectrum range of 8nm, corresponding to a record-high effective in-device r33 of 1190pm/V and V{\\pi} L of 0.291Vmm in a push-pull configuration. Excluding the slow-light effect, we estimate the EO polymer is poled with an ultra-high efficiency of 89pm/V in the slot. In addition, to achieve high-speed modulation, silicon PCW is selectively doped to reduce RC time delay. The 3-dB RF bandwidth of the modulator is measured to be 11GHz, and a modulation response up to 40GHz is observed.

Zhang, Xingyu; Luo, Jingdong; Jen, Alex K -Y; Chen, Ray T

2014-01-01T23:59:59.000Z

45

Study of organic molecules and nano-particle/polymer composites for flash memory and switch applications  

E-Print Network (OSTI)

Organic materials exhibit fascinating optical and electronic properties which motivate their hybridization with traditional silicon-based electronics in order to achieve novel functionalities and address scaling challenges ...

Paydavosi, Sarah

2012-01-01T23:59:59.000Z

46

Polymer and carbon nanotube materials for chemical sensors and organic electronics  

E-Print Network (OSTI)

This thesis details the development of new materials for high-performance chemical sensing as well as organic electronic applications. In Chapter 2, we develop a chemiresistive material based on single-walled carbon nanotubes ...

Wang, Fei, Ph. D. Massachusetts Institute of Technology

2010-01-01T23:59:59.000Z

47

Organic solar cells based on conjugated polymers : History and recent advances  

Science Journals Connector (OSTI)

Organic solar cells have attracted huge attention because of their ... potential in the low-cost manufacturing of plastic solar modules featuring flexible, lightweight, ultrathin, rollable ... bendable shapes. Th...

Hwajeong Kim; Sungho Nam; Jaehoon Jeong…

2014-07-01T23:59:59.000Z

48

Nonphotochemical hole burning of organic dyes and rare earth ions in polymers and glasses: a probe of the amorphous state  

SciTech Connect

New and in depth studies of amorphous materials (e.g., glasses and polymers) probed via the low temperature optical technique of nonphotochemical hole burning (NPHB) are presented. An extensive review of the phenomena itself, along with selected topics involving the use of persistent hole burning techniques, is given. In addition, a semi-complete tabulation of essentially all hole burning systems to date is included. The deuteration dependence in an amorphous host is examined for the system of tetracene in an ethanol/methanol mixture. The results illustrate the importance of hydrogen bonding in the hole burning process. The discovery of a highly efficient (or facile) class of hole burning systems, i.e., ionic dyes in hydroxylated polymers (i.e., poly(vinyl alcohol) (PVOH) and poly(acrylic acid) (PAA)), is presented and discussed. Ultrafast relaxation processes (i.e., dephasing) are studied for the system of cresyl violet perchlorate (CV) in PVOH. Further, for the first time, NPHB of rare earth ions, specifically Pr/sup +3/ and Nd/sup +3/, in a soft organic glass (i.e., PVOH) is discussed briefly. Detailed experimental results of two related phenomena, spontaneous hole filling (SPHF) and laser induced hole filling (LIHF), are presented and discussed for several systems: rhodamine 560 perchlorate (R560), rhodamine 640 perchlorate (R640), CV, Pr/sup +3/ and Nd..mu../sup 3/ in either PVOH or PAA. A theoretical model is developed for SPHF. The model invokes a correlated feedback mechanism from the anti-hole, which is able to account for the fact that no line broadening is observed. A tentative model is also presented for the phenomenon of LIHF.

Fearey, B.L.

1986-01-01T23:59:59.000Z

49

Self-organizing molecular photonic structures based on functionalized synthetic nucleic acid (DNA) polymers  

Science Journals Connector (OSTI)

Work has been carried out with the objective of imparting the electronic/photonic property of extended Forster energy transfer into organized structures formed by the programmed self-assembly of synthetic nucleic acid units (fluorescent oligonucleotides and polynucleotides). Forster energy transfer is a non-radiative process by which a fluorescent donor molecule excited at one wavelength is able to transfer its absorbed photonic energy efficiently to a fluorescent acceptor molecule, in close proximity, which then re-emits it at a second wavelength. An extended energy transfer system, with multiple donor molecules, could be considered a molecular photonic antenna or amplifier structure. Relatively efficient extended Forster energy transfer was observed in initial experiments involving multiple fluorescent donor and acceptor oligonucleotides. These results provide a clear demonstration of totally synthetic molecules, with highly specific programmable self-assembling properties, organizing into molecular structures with useful electronic/photonic properties.

M J Heller; R H Tullis

1991-01-01T23:59:59.000Z

50

Effect of the organic groups of difunctional silanes on the preparation of coated clays for olefin polymer modification  

Science Journals Connector (OSTI)

...phase behavior of polymer-clay composites. Macromolecules , 31 , 6676-6680...of high density polyethylene composites based on poly(diphenyl-siloxanes...Fracture studies of polypropylene/nanoclay composite. Part I: Effect of loading...

F. E. Monasterio; M. L. Dias; V. J. R. R. Pita; E. Erdmann; H. A. Destéfanis

51

Composite Membranes for CO2 Capture: High Performance Metal Organic Frameworks/Polymer Composite Membranes for Carbon Dioxide Capture  

SciTech Connect

IMPACCT Project: A team of six faculty members at Georgia Tech are developing an enhanced membrane by fitting metal organic frameworks, compounds that show great promise for improved carbon capture, into hollow fiber membranes. This new material would be highly efficient at removing CO2 from the flue gas produced at coal-fired power plants. The team is analyzing thousands of metal organic frameworks to identify those that are most suitable for carbon capture based both on their ability to allow coal exhaust to pass easily through them and their ability to select CO2 from that exhaust for capture and storage. The most suitable frameworks would be inserted into the walls of the hollow fiber membranes, making the technology readily scalable due to their high surface area. This composite membrane would be highly stable, withstanding the harsh gas environment found in coal exhaust.

None

2010-07-01T23:59:59.000Z

52

Controlled Self Assembly of Conjugated Polymer Containing Block Copolymers  

E-Print Network (OSTI)

Copolymers for Organic Optoelectronics. Macromolecules 2009,Copolymers for Organic Optoelectronics. Macromolecules 2009,performance of polymer optoelectronics. Table of Contents

McCulloch, Bryan

2012-01-01T23:59:59.000Z

53

Comparison of light out-coupling enhancements in single-layer blue-phosphorescent organic light emitting diodes using small-molecule or polymer hosts  

SciTech Connect

Single-layer blue phosphorescence organic light emitting diodes (OLEDs) with either small-molecule or polymer hosts are fabricated using solution process and the performances of devices with different hosts are investigated. The small-molecule device exhibits luminous efficiency of 14.7?cd/A and maximum power efficiency of 8.39?lm/W, which is the highest among blue phosphorescence OLEDs with single-layer solution process and small molecular hosts. Using the same solution process for all devices, comparison of light out-coupling enhancement, with brightness enhancement film (BEF), between small-molecule and polymer based OLEDs is realized. Due to different dipole orientation and anisotropic refractive index, polymer-based OLEDs would trap less light than small molecule-based OLEDs internally, about 37% better based simulation results. In spite of better electrical and spectroscopic characteristics, including ambipolar characteristics, higher carrier mobility, higher photoluminescence quantum yield, and larger triplet state energy, the overall light out-coupling efficiency of small molecule-based devices is worse than that of polymer-based devices without BEF. However, with BEF for light out-coupling enhancement, the improved ratio in luminous flux and luminous efficiency for small molecule based device is 1.64 and 1.57, respectively, which are significantly better than those of PVK (poly-9-vinylcarbazole) devices. In addition to the theoretical optical simulation, the experimental data also confirm the origins of differential light-outcoupling enhancement. The maximum luminous efficiency and power efficiency are enhanced from 14.7?cd/A and 8.39?lm/W to 23?cd/A and 13.2?lm/W, respectively, with laminated BEF, which are both the highest so far for single-layer solution-process blue phosphorescence OLEDs with small molecule hosts.

Chang, Yung-Ting [Institute of Chemistry, Academia Sinica, Taipei, Taiwan 11529, Taiwan (China); Department of Electrical Engineering, Graduate Institute of Photonics and Optoelectronics, National Taiwan University, Taipei, Taiwan 10617, Taiwan (China); Liu, Shun-Wei [Department of Electronic Engineering, Mingchi University of Technology, New Taipei, Taiwan 24301, Taiwan (China); Yuan, Chih-Hsien; Lee, Chih-Chien [Department of Electronic Engineering, National Taiwan University of Science and Technology, Taipei, Taiwan 10607, Taiwan (China); Ho, Yu-Hsuan; Wei, Pei-Kuen [Research Center for Applied Science Academia Sinica, Taipei, Taiwan 11527, Taiwan (China); Chen, Kuan-Yu [Chilin Technology Co., LTD, Tainan City, Taiwan 71758, Taiwan (China); Lee, Yi-Ting; Wu, Min-Fei; Chen, Chin-Ti, E-mail: cchen@chem.sinica.edu.tw, E-mail: chihiwu@cc.ee.ntu.edu.tw [Institute of Chemistry, Academia Sinica, Taipei, Taiwan 11529, Taiwan (China); Wu, Chih-I, E-mail: cchen@chem.sinica.edu.tw, E-mail: chihiwu@cc.ee.ntu.edu.tw [Department of Electrical Engineering, Graduate Institute of Photonics and Optoelectronics, National Taiwan University, Taipei, Taiwan 10617, Taiwan (China)

2013-11-07T23:59:59.000Z

54

Controlled Self Assembly of Conjugated Polymer Containing Block Copolymers  

E-Print Network (OSTI)

in dye/polymer blend photovoltaic cells. Advanced MaterialsA. J. , Polymer Photovoltaic Cells - Enhanced Efficiencies2-Layer Organic Photovoltaic Cell. Applied Physics Letters

McCulloch, Bryan

2012-01-01T23:59:59.000Z

55

A series of novel metal–organic coordination polymers constructed from the new 5-(4-imidazol-1-yl-phenyl)-2H-tetrazole spacer and aromatic carboxylates: Synthesis, crystal structures, and luminescence properties  

SciTech Connect

Using bifunctional organic ligand 5-(4-imidazol-1-yl-phenyl)-2H-tetrazole (HL) and different aromatic carboxylates as secondary ligands, four novel metal-organic coordination polymers, [Zn(L)(1,4-bdc){sub 0.5}] (1), [Zn{sub 1.5}(L)(2,5-pydc)] (2), [Zn(HL)(1,2,4,5-btec){sub 0.5}] (3), and [Cd(HL)(1,2,4,5-btec){sub 0.5}] (4) (1,4-bdc, 1,4-benzenedicarboxylate; 2,5-pydc, 2,5-pyridinedicarboxylate; 1,2,4,5-btec, 1,2,4,5-benzenetetracarboxylate) have been successfully synthesized and analyzed. Compound 1 features the 2D [Zn(L)]{sub n} layers built by ?{sub 3}-L bridging ligands and Zn(II) ions, which are further linked by pillared 1,4-bdc{sup 2?} ligands to form a 2-fold interpenetrating dmc framework. The 3D network of compound 2 can be simplified as a rare 2-nodal (3,6)-connected rtl (rutile) topology. Compound 3 possesses a 2D layer structure which is accomplished by connecting ladder-chains to L ligands. Compound 4 exhibits 2D [Cd(1,2,4,5-btec)] layers with infinite Cd–O–Cd rods and the adjacent 2D networks are further pillared by L with terminal bidentate coordination mode to generate the final 3D structure. The solid-state luminescent studies show that compounds 1–4 display intense fluorescent emissions. - Graphical abstract: Using bifunctional organic ligand 5-(4-imidazol-1-yl-phenyl)-2H-tetrazole (HL) and different aromatic carboxylates as secondary ligands, four novel metal-organic coordination polymers have been obtained. All compounds show good luminescence properties at room temperature. Display Omitted - Highlights: • Four Zn(II)/Cd(II)-MOCPs have been successfully prepared with the rigid bifunctional ligand 5-(4-imidazol -1-yl-phenyl) -2H-tetrazole and different aromatic carboxylates mixed ligands. • Compound 2 is a 2-nodal rtl (rutile) net and compound 4 is a binodal (5, 6)-connected net with yav topology. • Compounds 1-4 display intense fluorescent emissions at room temperature.

Sun, Jiayin [State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012 (China); Zhang, Daojun, E-mail: zhangdj0410@gmail.com [College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang 455002 (China); Wang, Li [State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012 (China); Zhang, Renchun; Wang, Junjie; Zeng, Ying; Zhan, Jinling [College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang 455002 (China); Xu, Jianing [State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012 (China); Fan, Yong, E-mail: mrfy@jlu.edu.cn [State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012 (China)

2013-10-15T23:59:59.000Z

56

Design and Synthesis of Chemically and Electronically Tunable Nanoporous Organic Polymers for Use in Hydrogen Storage Applications - DOE Hydrogen and Fuel Cells Program FY 2012 Annual Progress Report  

NLE Websites -- All DOE Office Websites (Extended Search)

6 6 DOE Hydrogen and Fuel Cells Program FY 2012 Annual Progress Report Hani M. El-Kaderi (Primary Contact), Mohammad G. Rabbani, Thomas E. Reich, Karl T. Jackson, Refaie M. Kassab Virginia Commonwealth University Department of Chemistry 1001 West Main St Richmond, VA 23284-2006 Phone: (804) 828-7505 Email: helkaderi@vcu.edu DOE Program Officer: Michael Sennett Phone: (301) 903-6051 Email: Michael.Sennett@science.doe.go Objectives Design and synthesis of new classes of low density * nanoporous organic polymers that are linked by strong covalent bonds and composed of chemically and electronically tunable building blocks. Use gas sorption experiments to investigate porosity and * determine hydrogen storage at variable temperature and

57

Polymer Electrolyte and Polymer Battery  

Science Journals Connector (OSTI)

Generally the polymer electrolyte of the polymer battery is classified into two kinds of the electrolyte: One is a dry-type electrolyte composed of a polymer matrix and...21.1. Fig....

Toshiyuki Osawa; Michiyuki Kono

2009-01-01T23:59:59.000Z

58

Fabrication and Characterization of Organic Solar Cells  

E-Print Network (OSTI)

processable polymer photovoltaic cells by self?organization Photodiodes,  and  Photovoltaic  Cells.   Applied Physics F,  Heeger  AJ.   Polymer  Photovoltaic  Cells  ?  Enhanced 

Yengel, Emre

2010-01-01T23:59:59.000Z

59

Energy level alignment in polymer organic solar cells at donor-acceptor planar junction formed by electrospray vacuum deposition  

SciTech Connect

Using ultraviolet photoelectron spectroscopy (UPS), we have measured the energy level offset at the planar interface between poly(3-hexylthiophene) (P3HT) and C{sub 61}-butyric acid methylester (PCBM). Gradual deposition of PCBM onto spin-coated P3HT in high vacuum was made possible by using electrospray vacuum deposition (EVD). The UPS measurement of EVD-prepared planar interface resulted in the energy level offset of 0.91?eV between P3HT HOMO and PCBM LUMO, which is considered as the upper limit of V{sub oc} of the organic photovoltaic cells.

Kim, Ji-Hoon; Hong, Jong-Am; Kwon, Dae-Gyeon; Seo, Jaewon; Park, Yongsup, E-mail: parky@khu.ac.kr [Department of Physics and Research Institute for Basic Sciences, Kyung Hee University, Seoul 130-701 (Korea, Republic of)

2014-04-21T23:59:59.000Z

60

Polymer formulations for gettering hydrogen  

DOE Patents (OSTI)

A novel method for preparing a hydrogenation composition comprising organic polymer molecules having carbon--carbon double bonds, for removing hydrogen from the atmosphere within enclosed spaces and particularly from atmospheres within enclosed spaces that contain air, water vapor, oxygen, carbon dioxide or ammonia. The organic polymers molecules containing carbon--carbon double bonds throughout their structures, preferably polybutadiene, polyisoprene and derivatives thereof, intimately mixed with an insoluble noble metal catalyst composition. High molecular weight polymers may be added to the organic polymer/catalyst mixture in order to improve their high temperature performance. The hydrogenation composition is prepared by dispersing the polymers in a suitable solvent, forming thereby a solution suspension, flash-freezing droplets of the solution in a liquid cryogen, freeze-drying the frozen droplets to remove frozen solvent incorporated in the droplets, and recovering the dried powder thus formed.

Shepodd, Timothy J. (330 Thrasher Ave., Livermore, CA 94550); Even, Jr., William R. (4254 Drake Way, Livermore, CA 94550)

2000-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "organic polymers show" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

Model systems for single molecule polymer Folarin Latinwoa  

E-Print Network (OSTI)

, including synthetic organic polymers. Recently, we developed single stranded DNA (ssDNA) as a new model, the local phys- ical and chemical properties of dsDNA are distinct from common synthetic organic polymer DNA (ssDNA).15 ssDNA is a flexible polymer with local physical properties similar to synthetic organic

Schroeder, Charles

62

Organization  

NLE Websites -- All DOE Office Websites (Extended Search)

Organization Print Organization Print 2012-12 org chart A complete ALS organization chart (June 2013) is available in PDF. Appointed and elected members of advisory panels provide guidance to Berkeley Lab and ALS management in developing the ALS scientific and user programs. ALS Staff Photo staff photo thumb Click on the image to see a recent photo of ALS staff in front of the dome. The photo was taken on May 14, 2013. ALS Management and Advisory Team Steve Kevan, Deputy Division Director, Science Michael J. Banda, Deputy Division Director, Operations Robert W. Schoenlein, Senior Staff Scientist, Next Generation Light Source Initiative Janos Kirz, Scientific Advisor Paul Adams, Division Deputy for Biosciences ALS Scientific, Technical, and User Support Groups Accelerator Physics

63

Achieving High Performance Polymer Tandem Solar Cells via Novel Materials Design  

E-Print Network (OSTI)

polymers for organic solar cell applications. Chem. Rev.Hummelen, J. C. , Plastic solar cells. Adv. Funct. Mater.Efficient inverted polymer solar cells. Appl. Phys. Lett.

Dou, Letian

2014-01-01T23:59:59.000Z

64

Achieving High Performance Polymer Tandem Solar Cells via Novel Materials Design  

E-Print Network (OSTI)

of conjugated polymers for organic solar cell applications.characterization of organic solar cells. Adv. Funct. Mater.techniques for the organic solar cell are employed to

Dou, Letian

2014-01-01T23:59:59.000Z

65

EMSL - polymers  

NLE Websites -- All DOE Office Websites (Extended Search)

polymers en Structures and Stabilities of (MgO)n Nanoclusters. http:www.emsl.pnl.govemslwebpublicationsstructures-and-stabilities-mgon-nanoclusters

66

SEC data for polymer 1-6: UV-vis spectra for polymer 1-6  

E-Print Network (OSTI)

for organic solar cells Eva Bundgaard a,b and Frederik C. Krebs a a Polymer Solar Cell Initiative, The Danish for these devices is summarized in the table below. IV-curve for the polymer 5 and PCBM: The photovoltaic studies of the device by a better overlap with the solar spectrum. The synthesis of low band gap polymers are however

67

Diarrheal Disease in Show Swine  

E-Print Network (OSTI)

are not important as a human disease. Cryptosporidium spp protozoa can rarely cause inap- parent infection or mild diarrhea in swine. Swine are not an important source for cryptosporidiosis in humans. Giardia spp protozoal infection in swine is rare, but it does... of gain. Lawsonia intracellularis is the causative bacterium. Though it is rarely the cause of diarrheal disease in show swine, veterinarians consider this organism as a potential cause when making a differ- ential diagnosis. L. intracellularis does...

Lawhorn, D. Bruce

2007-02-27T23:59:59.000Z

68

New functional polymers for sensors, smart materials and solar cells  

E-Print Network (OSTI)

Organic polymers can be used as the active component of sensors, smart materials, chemical-delivery systems and the active layer of solar cells. The rational design and modification of the chemical structure of polymers ...

Lobez Comeras, Jose Miguel

2012-01-01T23:59:59.000Z

69

Conducting Polymer Devices for Bioelectronics  

E-Print Network (OSTI)

signals recording. Organic electrochemical transistors (OECTs) represent a step beyond conducting polymer a far superior signal-to-noise- ratio (SNR) compared to electrodes. The high SNR of the OECT recordings and contamination. The use of an organic electrochemical transistor for detection of lactate by integration

Paris-Sud XI, Université de

70

2015 Washington Auto Show  

Energy.gov (U.S. Department of Energy (DOE))

Secretary of Energy Ernest Moniz attended the 2015 Washington Auto Show in Washington, DC on January 22, 2015. He delivered brief remarks on the Energy Department's role in electric and fuel cell vehicle technology, announced more than $55 million in funding opportunities to support fuel-efficient vehicle technologies and visited several of the exhibits featuring recent additions to the vehicles market.

71

2015 Washington Auto Show  

Energy.gov (U.S. Department of Energy (DOE))

Secretary of Energy Ernest Moniz attended the 2015 Washington Auto Show in Washington, DC on January 22, 2015. He delivered brief remarks on the Energy Department's role in electric and fuel cell vehicle technology, and visited several of the exhibits featuring recent additions to the vehicles market.

72

Experimental test for geminate recombination applied to organic solar cells  

Science Journals Connector (OSTI)

We show that a clear experimental test can distinguish between geminate and nongeminate recombination in low mobility semiconductors. For the particular case of the organic solar cell, the relative contribution of geminate recombination can be determined by measuring transient photoconductivity versus applied voltage. Measurements carried out at room temperature and 200 K on bulk heterojunction organic solar cells fabricated with two different semiconducting polymers show that neither exhibits significant geminate recombination.

R. A. Street; Sarah Cowan; A. J. Heeger

2010-09-01T23:59:59.000Z

73

Muon Studies in Organic Conductors [and Discussion  

Science Journals Connector (OSTI)

15 February 1995 research-article Muon Studies in Organic Conductors [and Discussion...Stoneham This paper contains a brief review of muon studies of organic conductors with emphasis...polymers. The species created by implanted muons in both semiconducting polymers and polymers...

1995-01-01T23:59:59.000Z

74

Sedimentation of Knotted Polymers  

E-Print Network (OSTI)

We investigate the sedimentation of knotted polymers by means of stochastic rotation dynamics, a molecular dynamics algorithm that takes hydrodynamics fully into account. We show that the sedimentation coefficient s, related to the terminal velocity of the knotted polymers, increases linearly with the average crossing number n_c of the corresponding ideal knot. To the best of our knowledge, this provides the first direct computational confirmation of this relation, postulated on the basis of experiments in "The effect of ionic conditions on the conformations of supercoiled DNA. I. sedimentation analysis" by Rybenkov et al., for the case of sedimentation. Such a relation was previously shown to hold with simulations for knot electrophoresis. We also show that there is an accurate linear dependence of s on the inverse of the radius of gyration R_g^-1, more specifically with the inverse of the R_g component that is perpendicular to the direction along which the polymer sediments. When the polymer sediments in a slab, the walls affect the results appreciably. However, R_g^-1 remains to a good precision linearly dependent on n_c. Therefore, R_g^-1 is a good measure of a knot's complexity.

Joonas Piili; Davide Marenduzzo; Kimmo Kaski; Riku Linna

2012-12-20T23:59:59.000Z

75

Polymer Brushes  

Science Journals Connector (OSTI)

...DOLAN, A.K., EFFECT OF EXCLUDED VOLUME ON POLYMER DISPERSANT ACTION, PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES...prop-erties of a tagged subset of chain units. One example is the nuclear magnetic resonance (NMR) studies by Blum and co-workers...

S. T. MILNER

1991-02-22T23:59:59.000Z

76

Conductive Polymers  

SciTech Connect

Electroluminescent devices such as light-emitting diodes (LED) and high-energy density batteries. These new polymers offer cost savings, weight reduction, ease of processing, and inherent rugged design compared to conventional semiconductor materials. The photovoltaic industry has grown more than 30% during the past three years. Lightweight, flexible solar modules are being used by the U.S. Army and Marine Corps for field power units. LEDs historically used for indicator lights are now being investigated for general lighting to replace fluorescent and incandescent lights. These so-called solid-state lights are becoming more prevalent across the country since they produce efficient lighting with little heat generation. Conductive polymers are being sought for battery development as well. Considerable weight savings over conventional cathode materials used in secondary storage batteries make portable devices easier to carry and electric cars more efficient and nimble. Secondary battery sales represent an $8 billion industry annually. The purpose of the project was to synthesize and characterize conductive polymers. TRACE Photonics Inc. has researched critical issues which affect conductivity. Much of their work has focused on production of substituted poly(phenylenevinylene) compounds. These compounds exhibit greater solubility over the parent polyphenylenevinylene, making them easier to process. Alkoxy substituted groups evaluated during this study included: methoxy, propoxy, and heptyloxy. Synthesis routes for production of alkoxy-substituted poly phenylenevinylene were developed. Considerable emphasis was placed on final product yield and purity.

Bohnert, G.W.

2002-11-22T23:59:59.000Z

77

Viscosity of polymer solutions  

Science Journals Connector (OSTI)

Viscosity of polymer solutions ... Abstracts for Volume 5A, Number 2. This program contains three components: "Density of Liquids", "Viscosity of Liquids", and "Viscosity of Polymer Solutions". ...

Gary L. Bertrand

1992-01-01T23:59:59.000Z

78

NEXT GENERATION SOLVENT MATERIALS COMPATIBILITY WITH POLYMER COMPONENTS WITHIN MODULAR CAUSTIC-SIDE SOLVENT EXTRACTION UNIT  

SciTech Connect

The Office of Waste Processing, within the Office of Technology Innovation and Development, is funding the development of an enhanced solvent for deployment at the Savannah River Site for removal of cesium from High Level Waste. The technical effort is collaboration between Oak Ridge National Laboratory (ORNL), Savannah River National Laboratory (SRNL), and Argonne National Laboratory. The first deployment target for the technology is within the Modular Caustic-Side Solvent Extraction Unit (MCU). Deployment of a new chemical within an existing facility requires verification that the chemical components are compatible with the installed equipment. In the instance of a new organic solvent, the primary focus is on compatibility of the solvent with organic polymers used in the facility. This report provides the data from exposing these polymers to the Next Generation Solvent (NGS). The test was conducted over six months. An assessment of the dimensional stability of polymers present in MCU (i.e., PEEK, Grafoil{reg_sign}, Tefzel{reg_sign} and Isolast{reg_sign}) in the modified NGS (where the concentration of the guanidine suppressor and MaxCalix was varied systematically) showed that guanidine (LIX{reg_sign}79) selectively affected Tefzel{reg_sign} (by an increase in size and lowering its density). The copolymer structure of Tefzel{reg_sign} and possibly its porosity allows for the easier diffusion of guanidine. Tefzel{reg_sign} is used as the seat material in some of the valves at MCU. Long term exposure to guanidine, may make the valves hard to operate over time due to the seat material (Tefzel{reg_sign}) increasing in size. However, since the physical changes of Tefzel{reg_sign} in the improved solvent are comparable to the changes in the CSSX baseline solvent, no design changes are needed with respect to the Tefzel{reg_sign} seating material. PEEK, Grafoil{reg_sign} and Isolast{reg_sign} were not affected by guanidine and MaxCalix within six months of exposure. The initial rapid weight gain observed in every polymer is assigned to the finite and limited uptake of Isopar{reg_sign} L/Modifier by the polymers probably due to the polymers porosity and rough surfaces. Spectroscopic data on the organic liquid and the polymer surfaces showed no preferential adsorption of any component in the NGS to the polymers and no leachate was observed in the NGS from any of the polymers studied.

Fondeur, F.; Peters, T.; Fink, S.

2011-09-29T23:59:59.000Z

79

Displacement Mechanism of Polymer Flooding by Molecular  

Science Journals Connector (OSTI)

Whether polymer flooding can enhance displacement efficiency or not is still a problem under debate. Laboratory experiment, numerical simulation and core data analysis are the commonly used means to study polymer flooding displacement efficiency. We discuss the limitations of these methods and employ molecular tribology to study the problem. The black–white ball action principle, i.e. the atom action model for describing the friction principle, is used to analyse the microscopic mechanism of oil displacement and describe the molecular interactions and displacement power during polymer flooding. Both tribology theory and dynamic rheological test show that molecular interactions during polymer flooding are bigger than that during water flooding. It is concluded that displacement efficiency of water flooding may be higher than that of polymer flooding at particular area; while polymer flooding can weaken the heterogeneity significantly, decrease ineffective injection and enhance the total displacement efficiency.

Yang Er-Long; Song Kao-Ping

2006-01-01T23:59:59.000Z

80

Polymer system for gettering hydrogen  

DOE Patents (OSTI)

A novel composition comprising organic polymer molecules having carbon-carbon double bonds, for removing hydrogen from the atmosphere within enclosed spaces. Organic polymers molecules containing carbon-carbon double bonds throughout their structures, preferably polybutadiene, polyisoprene and derivatives thereof, intimately mixed with an insoluble catalyst composition, comprising a hydrogenation catalyst and a catalyst support, preferably Pd supported on carbon, provide a hydrogen getter composition useful for removing hydrogen from enclosed spaces even in the presence of contaminants such as common atmospheric gases, water vapor, carbon dioxide, ammonia, oil mists, and water. The hydrogen getter composition disclosed herein is particularly useful for removing hydrogen from enclosed spaces containing potentially explosive mixtures of hydrogen and oxygen.

Shepodd, Timothy Jon (330 Thrasher Ave., Livermore, Alameda County, CA 94550); Whinnery, LeRoy L. (4929 Julie St., Livermore, Alameda County, CA 94550)

2000-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "organic polymers show" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

Polymer formulations for gettering hydrogen  

DOE Patents (OSTI)

A novel composition comprising organic polymer molecules having carbon-carbon double bonds, for removing hydrogen from the atmosphere within enclosed spaces. Organic polymers molecules containing carbon-carbon double bonds throughout their structures, preferably polybutadiene, polyisoprene and derivatives thereof, intimately mixed with an insoluble catalyst composition, comprising a hydrogenation catalyst and a catalyst support, preferably Pd supported on carbon, provide a hydrogen getter composition useful for removing hydrogen from enclosed spaces even in the presence of contaminants such as common atmospheric gases, water vapor, carbon dioxide, ammonia, oil mists, and water. The hydrogen getter composition disclosed herein is particularly useful for removing hydrogen from enclosed spaces containing potentially explosive mixtures of hydrogen and oxygen.

Shepodd, Timothy Jon (Livermore, CA); Whinnery, LeRoy L. (Livermore, CA)

1998-11-17T23:59:59.000Z

82

SULFUR POLYMER ENCAPSULATION.  

SciTech Connect

Sulfur polymer cement (SPC) is a thermoplastic polymer consisting of 95 wt% elemental sulfur and 5 wt% organic modifiers to enhance long-term durability. SPC was originally developed by the U.S. Bureau of Mines as an alternative to hydraulic cement for construction applications. Previous attempts to use elemental sulfur as a construction material in the chemical industry failed due to premature degradation. These failures were caused by the internal stresses that result from changes in crystalline structure upon cooling of the material. By reacting elemental sulfur with organic polymers, the Bureau of Mines developed a product that successfully suppresses the solid phase transition and significantly improves the stability of the product. SPC, originally named modified sulfur cement, is produced from readily available, inexpensive waste sulfur derived from desulfurization of both flue gases and petroleum. The commercial production of SPC is licensed in the United States by Martin Resources (Odessa, Texas) and is marketed under the trade name Chement 2000. It is sold in granular form and is relatively inexpensive ({approx}$0.10 to 0.12/lb). Application of SPC for the treatment of radioactive, hazardous, and mixed wastes was initially developed and patented by Brookhaven National Laboratory (BNL) in the mid-1980s (Kalb and Colombo, 1985; Colombo et al., 1997). The process was subsequently investigated by the Commission of the European Communities (Van Dalen and Rijpkema, 1989), Idaho National Engineering Laboratory (Darnell, 1991), and Oak Ridge National Laboratory (Mattus and Mattus, 1994). SPC has been used primarily in microencapsulation applications but can also be used for macroencapsulation of waste. SPC microencapsulation has been demonstrated to be an effective treatment for a wide variety of wastes, including incinerator hearth and fly ash; aqueous concentrates such as sulfates, borates, and chlorides; blowdown solutions; soils; and sludges. It is not recommended for treatment of wastes containing high concentrations of nitrates because of potentially dangerous reactions between sulfur, nitrate, and trace quantities of organics. Recently, the process has been adapted for the treatment of liquid elemental mercury and mercury contaminated soil and debris.

KALB, P.

2001-08-22T23:59:59.000Z

83

Polymers in a Vacuum  

SciTech Connect

In a variety of situations, isolated polymer molecules are found in a vacuum, and here we examine their properties. Angular momentum conservation is shown to significantly alter the average size of a chain and its conservation is only broken slowly by thermal radiation. For an ideal chain, the time autocorrelation for monomer position oscillates with a period proportional to chain length. The oscillations and damping are analyzed in detail. Short-range repulsive interactions suppress oscillations and speed up relaxation, but stretched chains still show damped oscillatory correlations.

Deutsch, J. M. [Department of Physics, University of California, Santa Cruz, California 95064 (United States)

2007-12-07T23:59:59.000Z

84

Polymer and small molecule based hybrid light source  

DOE Patents (OSTI)

An organic electroluminescent device, includes: a substrate; a hole-injecting electrode (anode) coated over the substrate; a hole injection layer coated over the anode; a hole transporting layer coated over the hole injection layer; a polymer based light emitting layer, coated over the hole transporting layer; a small molecule based light emitting layer, thermally evaporated over the polymer based light emitting layer; and an electron-injecting electrode (cathode) deposited over the electroluminescent polymer layer.

Choong, Vi-En (Carlsbad, CA); Choulis, Stelios (Nuremberg, DE); Krummacher, Benjamin Claus (Regensburg, DE); Mathai, Mathew (Monroeville, PA); So, Franky (Gainesville, FL)

2010-03-16T23:59:59.000Z

85

High Seebeck effects from conducting polymer: Poly(3,4-ethylenedioxythiophene): poly(styrenesulfonate) based thin-film device with hybrid metal/polymer/metal architecture  

SciTech Connect

Conductive polymers are of particular interest for thermoelectric applications due to their low thermal conductivity and relatively high electrical conductivity. In this study, commercially available conducting polymer poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) was used in a hybrid metal/polymer/metal thin film design in order to achieve a high Seebeck coefficient with the value of 252lV/k on a relatively low temperature scale. Polymer film thickness was varied in order to investigate its influence on the Seebeck effect. The high Seebeck coefficient indicates that the metal/polymer/metal design can develop a large entropy difference in internal energy of charge carriers between high and low-temperature metal electrodes to develop electrical potential due to charge transport in conducting polymer film through metal/polymer interface. Therefore, the metal/polymer/metal structure presents a new design to combine inorganic metals and organic polymers in thin-film form to develop Seebeck devices

Stanford, Michael G [ORNL; Wang, Hsin [ORNL; Ivanov, Ilia N [ORNL; Hu, Bin [University of Tennessee, Knoxville (UTK)

2012-01-01T23:59:59.000Z

86

Unwinding relaxation dynamics of polymers  

E-Print Network (OSTI)

The relaxation dynamics of a polymer wound around a fixed obstacle constitutes a fundamental instance of polymer with twist and torque and it is of relevance also for DNA denaturation dynamics. We investigate it by simulations and Langevin equation analysis. The latter predicts a relaxation time scaling as a power of the polymer length times a logarithmic correction related to the equilibrium fluctuations of the winding angle. The numerical data support this result and show that at short times the winding angle decreases as a power-law. This is also in agreement with the Langevin equation provided a winding-dependent friction is used, suggesting that such reduced description of the system captures the basic features of the problem.

Jean-Charles Walter; Marco Baiesi; Gerard Barkema; Enrico Carlon

2013-01-13T23:59:59.000Z

87

Nanoparticle Diffusion in Polymer Nanocomposites  

Science Journals Connector (OSTI)

Large-scale molecular dynamics simulations show that nanoparticle (NP) diffusivity in weakly interacting mixtures of NPs and polymer melts has two very different classes of behavior depending on their size. NP relaxation times and their diffusivities are completely described by the local, Rouse dynamics of the polymer chains for NPs smaller than the polymer entanglement mesh size. The motion of larger NPs, which are comparable to the entanglement mesh size, is significantly slowed by chain entanglements, and is not describable by the Stokes-Einstein relationship. Our results are in essentially quantitative agreement with a force-level generalized Langevin equation theory for all the NP sizes and chain lengths explored, and imply that for these lightly entangled systems, activated NP hopping is not important.

Jagannathan T. Kalathi; Umi Yamamoto; Kenneth S. Schweizer; Gary S. Grest; Sanat K. Kumar

2014-03-12T23:59:59.000Z

88

Science Podcast: 21 November Show  

Science Journals Connector (OSTI)

...Neurosexism and a news roundup. In this show: Cordelia Fine discusses the prevalence of "neurosexism" in the study of the human brain. A daily news roundup. Science Podcast, 21 November 2014 Download MP3 file for this show All Science podcasts Subscribe to...

2014-11-21T23:59:59.000Z

89

Inorganic-Organic Hybrid Thermoelectrics  

Energy.gov (U.S. Department of Energy (DOE))

Large-scale synthesis of inorganic and organic nanomaterials (single-crystalline nanowires and functionalized conducting polymer thin films) together with strategies for large-scale assembly are discussed

90

Electronic Structure Calculations on Helical Conducting Polymers  

Science Journals Connector (OSTI)

Electronic Structure Calculations on Helical Conducting Polymers ... Therefore, we select the B3LYP/6-31G* methodology to calculate the oligomers. ... Table 3 shows several calculated parameters. ...

Juan D. Ripoll; Andrei Serna; Doris Guerra; Albeiro Restrepo

2010-09-28T23:59:59.000Z

91

Vacuum-Deposited Planar Heterojunction Polymer Solar Cells  

Science Journals Connector (OSTI)

Vacuum-Deposited Planar Heterojunction Polymer Solar Cells ... Bilayer heterojunction solar cells were fabricated by sequential deposition of P3HT and C60 and the photovoltaic response measured. ... organic solar cells; conjugated polymers; poly(3-hexylthiophene); vacuum thermal deposition; thin films ...

Peter Kovacik; Giuseppe Sforazzini; Andrew G. Cook; Shawn M. Willis; Patrick S. Grant; Hazel E. Assender; Andrew A. R. Watt

2010-12-14T23:59:59.000Z

92

Molecular design of conjugated polymers for the control of conformation, electronics and self-assembly  

E-Print Network (OSTI)

The design, synthesis and characterization of organic electronic materials, in particular luminescent conjugated polymers, with structural motifs that allow for the controlled modulation of their photophysical properties ...

Bouffard, Jean, Ph. D. Massachusetts Institute of Technology

2008-01-01T23:59:59.000Z

93

NAIHC Convention and Trade Show  

Energy.gov (U.S. Department of Energy (DOE))

The National American Indian Housing Council's (NAIHC) most longstanding Annual Event, the 39th Annual NAIHC Convention and Trade Show is an opportunity to learn about tribal housing, attend...

94

polymers | EMSL  

NLE Websites -- All DOE Office Websites (Extended Search)

of formation yields a model with quantitative agreement for the benchmark minerals brucite, magnesite, nesquehonite, and hydromagnesite. The model shows how small differences...

95

Friction in (im-)miscible polymer brush systems and the role of transverse polymer-tilting  

E-Print Network (OSTI)

Friction in (im-)miscible polymer brush systems and the role of transverse polymer-tilting Sissi de preferred solvent, leading to low friction and low wear rates. Here, we demonstrate, using molecular systems also show smaller friction than miscible systems, although the friction reduction is less than

Mueser, Martin

96

Chaperonin Polymers in Archaea: The Cytoskeleton of Prokaryotes?  

DOE R&D Accomplishments (OSTI)

Chaperonins are protein complexes that play a critical role in folding nascent polypeptides under normal conditions and refolding damaged proteins under stress conditions. In all organisms these complexes are composed of evolutionarily conserved 60-kDa proteins arranged in double-ring structures with between 7 and 9 protein subunits per ring. These double ring structures are assumed to be the functional units in vivo, although they have never been observed inside cells. Here the authors show that the purified chaperonin from the hyperthermophilic archaeon Sulfolobus shibatae, which is closely related to chaperonins in eukaryotes, has a double ring structure at low concentrations (0.1 mg/ml), but at more physiological concentrations, the rings stack end to end to form polymers. The polymers are stable at physiological temperatures (75 C) and closely resemble structures observed inside unfixed S. shibatae cells. The authors suggest that in vivo chaperonin activity may be regulated by polymerization and that chaperonin polymers may act as a cytoskeleton-like structure in archaea and bacteria.

Trent, J. D.; Kagawa, H. K.; Zaluzec, N. J.

1997-07-00T23:59:59.000Z

97

Nanoporous polymer electrolyte  

DOE Patents (OSTI)

A nanoporous polymer electrolyte and methods for making the polymer electrolyte are disclosed. The polymer electrolyte comprises a crosslinked self-assembly of a polymerizable salt surfactant, wherein the crosslinked self-assembly includes nanopores and wherein the crosslinked self-assembly has a conductivity of at least 1.0.times.10.sup.-6 S/cm at 25.degree. C. The method of making a polymer electrolyte comprises providing a polymerizable salt surfactant. The method further comprises crosslinking the polymerizable salt surfactant to form a nanoporous polymer electrolyte.

Elliott, Brian (Wheat Ridge, CO); Nguyen, Vinh (Wheat Ridge, CO)

2012-04-24T23:59:59.000Z

98

Syntheses and studies of acetylenic polymers  

SciTech Connect

Based on new diiodo aryl compounds a series of novel soluble polymers, poly(2,5-dialkoxy-1,4-phenyleneethynylene)s (PPE polymers) were synthesized using palladium-catalysis. The molecular weights (MW) range from 8,000 to 40,000. Properties such as absorption, fluorescence, and conductivity were studied. A PPE polymer with butoxy side chain exhibits a weak electrical conductivity ({sigma} = 10{sup {minus}3} S/cm) after doping with AsF{sub 5}. Absorption spectra in THF solution at room temperature (RT) show a maximum at 440 nm. However, absorption spectra of PPE polymers in the film state at (RT) show a maximum at 480 nm. PPE polymer-based light emitting diode (LED) devices have been prepared; greenish light from these LED devices can be observed. Poly(ethynylene-p-arylene-ethynylene-silylene)s were synthesized through the same palladium-catalyzed polymerization; MWs are between 6,000 and 82,000. Absorption and fluorescence were studied. Some of these polymers exhibit thermotropic liquid crystalline properties. In addition, nonlinear optical properties were briefly examined. Poly(silylene-ethynylene) homopolymers as well as alternating copolymers were synthesized through a novel palladium-catalyzed polymerization; MWs range from 56 {times} 10{sup 3} to 5.3 {times} 10{sup 3}. Thermal stability of these was also investigated; char yields range from 56 to 83%. One of these polymers exhibits thermotropic liquid crystalline properties.

Yiwei, Ding

1994-03-03T23:59:59.000Z

99

ENVITEC shows off air technologies  

SciTech Connect

The ENVITEC International Trade Fair for Environmental Protection and Waste Management Technologies, held in June in Duesseldorf, Germany, is the largest air pollution exhibition in the world and may be the largest environmental technology show overall. Visitors saw thousands of environmental solutions from 1,318 companies representing 29 countries and occupying roughly 43,000 square meters of exhibit space. Many innovations were displayed under the category, ``thermal treatment of air pollutants.`` New technologies include the following: regenerative thermal oxidizers; wet systems for removing pollutants; biological scrubbers;electrostatic precipitators; selective adsorption systems; activated-coke adsorbers; optimization of scrubber systems; and air pollution monitors.

McIlvaine, R.W.

1995-08-01T23:59:59.000Z

100

4-H Show Lamb Guide  

E-Print Network (OSTI)

members in devoting many hours over several months to the proper care, feeding and management of a potentially award-winning lamb. Lambs may be purchased by private treaty at a producer?s ranch or through sales. During the late spring and summer..., there are usually one or more sales every week throughout the state. Information on lamb sales is available through magazines such as ?The Showbox,? ?Show Times? and ?The Purple Circle.? However, many of the decisions you make regarding the type of feeder lamb...

Craddock, Frank; Stultz, Ross

1998-11-30T23:59:59.000Z

Note: This page contains sample records for the topic "organic polymers show" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


101

Friction between Ring Polymer Brushes  

E-Print Network (OSTI)

Friction between ring-polymer brushes at melt densities sliding past each other are studied using extensive course-grained molecular dynamics simulations and scaling arguments, and the results are compared to the friction between linear-polymer brushes. We show that for a velocity range spanning over three decades, the frictional forces measured for ring-polymer brushes are half the corresponding friction in case of linear brushes. In the linear-force regime, the weak inter-digitation of two ring brushes compared to linear brushes also leads to a lower number of binary collisions between the monomers of opposing brushes. At high velocities, where the thickness of the inter-digitation layer between two opposing brushes is on the order monomer size regardless of brush topology, stretched segments of ring polymers take a double-stranded conformation. As a result, monomers of the double-stranded segments collide less with the monomers of the opposing ring brush even though a similar number of monomers occupies the inter-digitation layer for ring and linear-brush bilayers. The numerical data obtained from our simulations is consistent with the proposed scaling analysis. Conformation-dependent frictional reduction observed in ring brushes can have important consequences in non-equilibrium bulk systems.

A. Erbas; J. Paturej

2015-01-07T23:59:59.000Z

102

Tridentate Phosphine Linkers for Immobilized Catalysts: Development and Characterization of Immobilized Rhodium Complexes and Solid-State NMR Studies of Polymers  

E-Print Network (OSTI)

) polymers. 13C CP/MAS (cross polarization with magic angle spinning) NMR and IR spectroscopy reveal that PEEK polymers show no detectable chemical change on the molecular level, while PPS polymers display signs of oxidation of the thioether group...

Guenther, Johannes 1983-

2012-08-16T23:59:59.000Z

103

Innovative approaches to improve bulk heterojuction organic photovoltaic device performance.  

E-Print Network (OSTI)

??In this thesis we studied the electrical properties of bulk heterojunction organic photovoltaic (OPV) devices fabricated using a variety of conjugated polymers, including regioregular P3HT,… (more)

Zhang, Ye

2010-01-01T23:59:59.000Z

104

Fabrication and life cycle assessment of organic photovoltaics.  

E-Print Network (OSTI)

??Increasing demand for renewable energy has resulted in a new interest for alternative technologies such as organic photovoltaics. With efficiencies exceeding 8% for both polymer… (more)

Anctil, Annick

2011-01-01T23:59:59.000Z

105

Polymer-assisted deposition of films  

DOE Patents (OSTI)

A polymer assisted deposition process for deposition of metal nitride films and the like is presented. The process includes solutions of one or more metal precursor and soluble polymers having binding properties for the one or more metal precursor. After a coating operation, the resultant coating is heated at high temperatures under a suitable atmosphere to yield metal nitride films and the like. Such films can be conformal on a variety of substrates including non-planar substrates. In some instances, the films can be epitaxial in structure and can be of optical quality. The process can be organic solvent-free.

McCleskey,Thomas M. (Los Alamos, NM); Burrell,Anthony K. (Los Alamos, NM); Jia,Quanxi (Los Alamos, NM); Lin,Yuan (Chandler, AZ)

2012-02-28T23:59:59.000Z

106

Exploring novel silicon-containing polymers---From preceramic polymers to conducting polymers with nonlinear optical properties  

SciTech Connect

Several new types of silicon-containing preceramic polymers, i.e., poly(diorganosilacetylene) and poly(diorganosilvinylene) have been synthesized with molecular weights from 10,000 to 120,000. These polymers could be thermally converted to SiC with a moderate to high char yields. Ready solubility and good processability made these types of polymers attractive in their applications to ceramics. The thermal polymerization of diethynyldiphenyl-silane, which was reported in 1968 to afford poly(diphenylsilyldiacetylene) via dehydrogenation, was reinvestigated. Spectroscopic studies showed that the polymer had a structure of polyacetylene type not diacetylene. Diphenyldiethynylgermane and a series of diorganodiethynylsilances were synthesized. These could be polymerized in the presence of MoCl{sub 5} or WCl{sub 6} to afford a soluble, violet material with Mw as high as 108,000. 100 refs., 56 figs., 16 tabs.

Pang, Yi.

1991-10-07T23:59:59.000Z

107

Structure of All-Polymer Solar Cells Impedes Efficiency  

NLE Websites -- All DOE Office Websites (Extended Search)

Structure of All-Polymer Solar Structure of All-Polymer Solar Cells Impedes Efficiency Structure of All-Polymer Solar Cells Impedes Efficiency Print Wednesday, 27 October 2010 00:00 Organic solar cells are made of thin layers of interpenetrating structures from two different conducting organic materials and are increasingly popular because they are both potentially cheaper to make than those currently in use and can be "painted" or printed onto a variety of surfaces, including flexible films made from the same material as most soda bottles. A large community is exploring a number of promising material combinations (polymer/fullerene, polymer/inorganic, all-polymer, and dye-sensitized cells), seeking a deeper understanding of their fundamental structure, operation, and limitations. A team of researchers from North Carolina State University and the UK has now found, through microscopy and resonant scattering and reflectivity studies at ALS Beamlines 6.3.2 and 5.3.2, that the low rate of energy conversion in model all-polymer solar cells is caused by domains that are too large and interfaces that are not sharp enough. This insight will lead to new approaches to all-polymer device technology that will help realize the intrinsic potential of these materials.

108

Bulk Heterojunction Polymer Solar Cells  

Science Journals Connector (OSTI)

Recent developments on bulk-heterojunction polymer photovoltaic diodes will be presented, focusing on the mechanism of charge generation, low bandgap polymers for increased photon...

Janssen, René

109

Radioluminescent polymer lights  

SciTech Connect

The preparation of radioluminescent light sources where the tritium is located on the aryl-ring in a polymer has been demonstrated with deuterium/tritium substitution. This report discusses tests, results, and future applications of radioluminescent polymers. 10 refs. (FI)

Jensen, G.A.; Nelson, D.A.; Molton, P.M.

1990-09-01T23:59:59.000Z

110

Internal dissipation of a polymer  

SciTech Connect

The dynamics of flexible polymer molecules are often assumed to be governed by hydrodynamics of the solvent. However there is considerable evidence that internal dissipation of a polymer contributes as well. Here we investigate the dynamics of a single chain in the absence of solvent to characterize the nature of this internal friction. We model the chains as freely hinged but with localized bond angles and threefold symmetric dihedral angles. We show that the damping is close but not identical to Kelvin damping, which depends on the first temporal and second spatial derivative of monomer position. With no internal potential between monomers, the magnitude of the damping is small for long wavelengths and weakly damped oscillatory time dependent behavior is seen for a large range of spatial modes. When the size of the internal potential is increased, such oscillations persist, but the damping becomes larger. However underdamped motion is present even with quite strong dihedral barriers for long enough wavelengths.

Deutsch, J. M. [Department of Physics, University of California, Santa Cruz, California 95064 (United States)

2010-06-15T23:59:59.000Z

111

Method of making soluble polyacetylenic and polyaromatic polymers  

DOE Patents (OSTI)

A soluble polyene polymer and a method of making the same are disclosed. The polymer is of the class suitable for doping to produce an electrically conductive polymer. The method is generally applicable to acetylenic and aromatic monomers, proven examples of which include acetylene, benzene, anthracene and napthalene. In accordance with the method, the monomer is dissolved in arsenic trifluoride. Arsenic pentafluoride is then introduced into the solution to induce polymerization by what is speculated to be an ionic polymerization reaction. The resulting polymer differs from other polyene polymers in that it is soluble in common organic solvents, and further in that it can be melted without undergoing decomposition, thereby rendering it particularly suitable for processing to form various polymeric articles.

Aldissi, Mahmoud (Los Alamos, NM); Liepins, Raimond (Los Alamos, NM)

1985-01-01T23:59:59.000Z

112

GLASSY STATES OF ADSORBED FLEXIBLE POLYMERS AND SPREAD POLYMER "MONOLAYERS"  

E-Print Network (OSTI)

1269 GLASSY STATES OF ADSORBED FLEXIBLE POLYMERS AND SPREAD POLYMER "MONOLAYERS" K. KREMER* Exxon mechanism for the dynamics of irreversibly adsorbed polymers. We argue that glass-like states can exist near of polymer adsorbed ' ' and the thickness of the adsorbed layer 2-7. While the results of the different

Paris-Sud XI, Université de

113

Conducting polymer and hydrogenated amorphous silicon hybrid solar cells  

E-Print Network (OSTI)

November 2005 An organic-inorganic hybrid solar cell with a p-i-n stack structure has been investigated for their potential in electronic devices such as organic light emitting diodes OLEDs , solar cells, photode- tectorsConducting polymer and hydrogenated amorphous silicon hybrid solar cells Evan L. Williams

Schiff, Eric A.

114

Interaction of organic additives with ceramic surfaces in colloidal slurries  

SciTech Connect

Three different dispersants, a low molecular weight compound (aminoalkanol), a polymer (polyelectrolyte) and a block-co-polymer (block polyethylenoxide-polyacrylic acid) were investigated with AFM and rheology in an aqueous system in order to elucidate the influence of the size and structure of the molecule on the dispersion stabilization. The AFM studies indicate that the aminoalkanol gives repulsive forces due to electrostatic repulsion only. The polyelectrolyte seems to stabilize the dispersion with both steric and electrostatic repulsive forces. A new compound that was designed for pure steric stabilization in aqueous media a block-co-polymer consisting of a polar anchor block and a stabilizing neutral chain was investigated for its behavior. The AFM measurements show that it is likely that this compound causes repulsion of silicon nitride surfaces due to steric repulsion only. Rheological measurements of aqueous powder slurries show that the adsorption of the organic additives is of great importance. Due to a more silicon dioxide like acidic surface of the investigated Si{sub 3}N{sub 4}-powder the carboxylate anions of the block-co-polymer adsorb badly. Therefore, no sterically repulsive forces can be built up. This then causes an increase in the slurry`s viscosity.

Sigmund, W.M.; Wang, L.; Sindel, J.; Rotov, M.; Aldinger, F. [Univ. of Stuttgart (Germany). Inst. fuer Nichtmetallische Anorganische Materialien

1997-08-01T23:59:59.000Z

115

Semipermeable polymers and method for producing same  

DOE Patents (OSTI)

A polyamide membrane comprising reaction product of an anhydrous solution comprising an anhydrous solvent, at least one polyfunctional secondary amine and a pre-polymer deposition catalyst; and an anhydrous, organic solvent solution comprising a polyfunctional aromatic amine-reactive reactant comprising one ring. A composite semipermeable membrane comprising the polyamide membrane on a porous support. A method of making a composite semipermeable membrane by coating a porous support with an anhydrous solution comprising an anhydrous solvent, a polyfunctional secondary amine and a pre-polymer deposition catalyst, to form an activated pre-polymer layer on the porous support and contacting the activated pre-polymer layer with an anhydrous, organic solvent solution comprising a polyfunctional amine-reactive reactant to interfacially condense the amine-reactive reactant with the polyfunctional secondary amine, thereby forming a cross-linked, interfacial polyamide layer on the porous support. A method of impregnating a composite semipermeable membrane with nanoparticles selected from heavy metals and/or oxides of heavy metals.

Buschmann, Wayne E. (Boulder, CO)

2012-04-03T23:59:59.000Z

116

Structure of All-Polymer Solar Cells Impedes Efficiency  

NLE Websites -- All DOE Office Websites (Extended Search)

Structure of All-Polymer Solar Cells Impedes Efficiency Print Structure of All-Polymer Solar Cells Impedes Efficiency Print Organic solar cells are made of thin layers of interpenetrating structures from two different conducting organic materials and are increasingly popular because they are both potentially cheaper to make than those currently in use and can be "painted" or printed onto a variety of surfaces, including flexible films made from the same material as most soda bottles. A large community is exploring a number of promising material combinations (polymer/fullerene, polymer/inorganic, all-polymer, and dye-sensitized cells), seeking a deeper understanding of their fundamental structure, operation, and limitations. A team of researchers from North Carolina State University and the UK has now found, through microscopy and resonant scattering and reflectivity studies at ALS Beamlines 6.3.2 and 5.3.2, that the low rate of energy conversion in model all-polymer solar cells is caused by domains that are too large and interfaces that are not sharp enough. This insight will lead to new approaches to all-polymer device technology that will help realize the intrinsic potential of these materials.

117

Structure of All-Polymer Solar Cells Impedes Efficiency  

NLE Websites -- All DOE Office Websites (Extended Search)

Structure of All-Polymer Solar Cells Impedes Efficiency Print Structure of All-Polymer Solar Cells Impedes Efficiency Print Organic solar cells are made of thin layers of interpenetrating structures from two different conducting organic materials and are increasingly popular because they are both potentially cheaper to make than those currently in use and can be "painted" or printed onto a variety of surfaces, including flexible films made from the same material as most soda bottles. A large community is exploring a number of promising material combinations (polymer/fullerene, polymer/inorganic, all-polymer, and dye-sensitized cells), seeking a deeper understanding of their fundamental structure, operation, and limitations. A team of researchers from North Carolina State University and the UK has now found, through microscopy and resonant scattering and reflectivity studies at ALS Beamlines 6.3.2 and 5.3.2, that the low rate of energy conversion in model all-polymer solar cells is caused by domains that are too large and interfaces that are not sharp enough. This insight will lead to new approaches to all-polymer device technology that will help realize the intrinsic potential of these materials.

118

Structure of All-Polymer Solar Cells Impedes Efficiency  

NLE Websites -- All DOE Office Websites (Extended Search)

Structure of All-Polymer Solar Cells Impedes Efficiency Print Structure of All-Polymer Solar Cells Impedes Efficiency Print Organic solar cells are made of thin layers of interpenetrating structures from two different conducting organic materials and are increasingly popular because they are both potentially cheaper to make than those currently in use and can be "painted" or printed onto a variety of surfaces, including flexible films made from the same material as most soda bottles. A large community is exploring a number of promising material combinations (polymer/fullerene, polymer/inorganic, all-polymer, and dye-sensitized cells), seeking a deeper understanding of their fundamental structure, operation, and limitations. A team of researchers from North Carolina State University and the UK has now found, through microscopy and resonant scattering and reflectivity studies at ALS Beamlines 6.3.2 and 5.3.2, that the low rate of energy conversion in model all-polymer solar cells is caused by domains that are too large and interfaces that are not sharp enough. This insight will lead to new approaches to all-polymer device technology that will help realize the intrinsic potential of these materials.

119

Structure of All-Polymer Solar Cells Impedes Efficiency  

NLE Websites -- All DOE Office Websites (Extended Search)

Structure of All-Polymer Solar Cells Impedes Efficiency Print Structure of All-Polymer Solar Cells Impedes Efficiency Print Organic solar cells are made of thin layers of interpenetrating structures from two different conducting organic materials and are increasingly popular because they are both potentially cheaper to make than those currently in use and can be "painted" or printed onto a variety of surfaces, including flexible films made from the same material as most soda bottles. A large community is exploring a number of promising material combinations (polymer/fullerene, polymer/inorganic, all-polymer, and dye-sensitized cells), seeking a deeper understanding of their fundamental structure, operation, and limitations. A team of researchers from North Carolina State University and the UK has now found, through microscopy and resonant scattering and reflectivity studies at ALS Beamlines 6.3.2 and 5.3.2, that the low rate of energy conversion in model all-polymer solar cells is caused by domains that are too large and interfaces that are not sharp enough. This insight will lead to new approaches to all-polymer device technology that will help realize the intrinsic potential of these materials.

120

Structure of All-Polymer Solar Cells Impedes Efficiency  

NLE Websites -- All DOE Office Websites (Extended Search)

Structure of All-Polymer Solar Cells Impedes Efficiency Print Structure of All-Polymer Solar Cells Impedes Efficiency Print Organic solar cells are made of thin layers of interpenetrating structures from two different conducting organic materials and are increasingly popular because they are both potentially cheaper to make than those currently in use and can be "painted" or printed onto a variety of surfaces, including flexible films made from the same material as most soda bottles. A large community is exploring a number of promising material combinations (polymer/fullerene, polymer/inorganic, all-polymer, and dye-sensitized cells), seeking a deeper understanding of their fundamental structure, operation, and limitations. A team of researchers from North Carolina State University and the UK has now found, through microscopy and resonant scattering and reflectivity studies at ALS Beamlines 6.3.2 and 5.3.2, that the low rate of energy conversion in model all-polymer solar cells is caused by domains that are too large and interfaces that are not sharp enough. This insight will lead to new approaches to all-polymer device technology that will help realize the intrinsic potential of these materials.

Note: This page contains sample records for the topic "organic polymers show" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

Chemical phenomena in solid-state voltammetry in polymer solvents  

SciTech Connect

This paper, aimed at delineating significant chemical effects in solid-state voltammetry, describes electrochemical oxidations and reductions of electroactive monomer solutes dissolved in and diffusing through rigid and semirigid polymer electrolyte solvents. Sorption of organic monomer vapors into poly(ethylene oxide) films yields polymer solvents whose chemistry is dominated by that of the sorbed monomer as shown by coordination and precipitation effects. The dynamics of plasticization-induced changes in transport rates are quite rapid. Physical diffusion in the polymer solvent in slow enough that electron hopping reactions measurably enhance charge transport rates; the effect was used to estimate a lower limit for the (Co(bpy)/sub 3/)/sup 2+/+/ self-exchange rate constant of 2 /times/ 10/sup 9/ M/sup /minus/1/ s/sup /minus/1/. It is possible to erect polymeric film transport barriers at the electrode/polymer solvent interface and to measure the rate of permeation of monomer complexes from the polymer solvent into the polymer transport barrier film. Polymeric films of Os and Ru polypyridine complexes can be electropolymerized from polymer solutions of the corresponding monomers. Solid-state voltammetry can be extended to other polymer solvents including sulfonated polystyrene, poly(vinyl chloride), Nafion, and poly(acrylamide) gel.

Geng, L.; Reed, R.A.; Kim, M.H.; Wooster, T.T.; Oliver, B.N.; Egekeze, J.; Kennedy, R.T.; Jorgenson, J.W.; Parcher, J.F.; Murray, R.W.

1989-03-01T23:59:59.000Z

122

SUPER HARD SURFACED POLYMERS  

SciTech Connect

High energy ion beam surface treatments were applied to a selected group of polymers. Of the six materials in the present study, four were thermoplastics (polycarbonate, polyethylene, polyethylene terephthalate, and polystyrene) and two were thermosets (epoxy and polyimide). The particular epoxy evaluated in this work is one of the resins used in formulating fiber reinforced composites for military helicopter blades. Measures of mechanical properties of the near surface regions were obtained by nanoindentation hardness and pin on disk wear. Attempts were also made to measure erosion resistance by particle impact. All materials were hardness tested. Pristine materials were very soft, having values in the range of approximately 0.1 to 0.5 GPa. Ion beam treatment increased hardness by up to 50 times compared to untreated materials. For reference, all materials were hardened to values higher than those typical of stainless steels. Wear tests were carried out on three of the materials, PET, PI and epoxy. On the ion beam treated epoxy no wear could be detected, whereas the untreated material showed significant wear.

Mansur, Louis K [ORNL] [ORNL; Bhattacharya, R [UES, Incorporated, Dayton, OH] [UES, Incorporated, Dayton, OH; Blau, Peter Julian [ORNL] [ORNL; Clemons, Art [ORNL] [ORNL; Eberle, Cliff [ORNL] [ORNL; Evans, H B [UES, Incorporated, Dayton, OH] [UES, Incorporated, Dayton, OH; Janke, Christopher James [ORNL] [ORNL; Jolly, Brian C [ORNL] [ORNL; Lee, E H [Consultant, Milpitas, CA] [Consultant, Milpitas, CA; Leonard, Keith J [ORNL] [ORNL; Trejo, Rosa M [ORNL] [ORNL; Rivard, John D [ORNL] [ORNL

2010-01-01T23:59:59.000Z

123

Sulfonated polyphenylene polymers  

DOE Patents (OSTI)

Improved sulfonated polyphenylene compositions, improved polymer electrolyte membranes and nanocomposites formed there from for use in fuel cells are described herein. The improved compositions, membranes and nanocomposites formed there from overcome limitations of Nafion.RTM. membranes.

Cornelius, Christopher J. (Albuquerque, NM); Fujimoto, Cy H. (Albuquerque, NM); Hickner, Michael A. (Albuquerque, NM)

2007-11-27T23:59:59.000Z

124

Interaction of Nano-Sized Materials With Polymer Chains in Polymer-Nanocomposite Thin Films-An AFM Perspective  

SciTech Connect

Nanocomposite thin films were prepared with polyurethane as a matrix and organically modified clay as a filler. The interfacial interaction between the exfoliated clay nanoplatelets and the polymeric chains has been investigated by using Atomic Force Microscopy (AFM). The nanoclay platelets show a preferential association with the hard domains of polyurethane matrix on the surface of the thin films. The pendant hydroxyl group on the nanoplatelets attract the isocyanate of the polyisocyanate and a urethane group is formed. This leads to the 'clouding' and 'entwining' of the nanoplatelets by the hard segmental chains. This is the first visual evidence of nanomaterial filler and polymer matrix interaction and it could open up a spectrum of novel property achievements in nanocomposite thin films. Also the understanding of this interaction can lead to more controlled architecture of nanocomposites.

Verma, Gaurav; Kaushik, Anupama [University Institute of Chemical Engineering and Technology, Sector 14, Panjab University Chandigarh-160014, India and (Department of Chemical Engineering and Technology) (India); Ghosh, Anup K. [Centre for Polymer Science and Engineering, Indian Institute of Technology Delhi, Hauz Khas, New Delhi-110016 (India)

2011-12-12T23:59:59.000Z

125

Diffusion coefficients in trimethyleneoxide containing comb branch polymer  

NLE Websites -- All DOE Office Websites (Extended Search)

Diffusion coefficients in trimethyleneoxide containing comb branch polymer Diffusion coefficients in trimethyleneoxide containing comb branch polymer electrolytes Title Diffusion coefficients in trimethyleneoxide containing comb branch polymer electrolytes Publication Type Journal Article Year of Publication 2004 Authors Liu, Gao, Craig L. Reeder, Xiaoguang Sun, and John B. Kerr Journal Solid State Ionics Volume 175 Pagination 781-783 Keywords comb branch polyethers, conductivity, lithium battery, polymer electrolytes, salt diffusion coefficient, trimethylene oxide Abstract This paper reports on a new comb branch polymer based on trimethylene oxide (TMO) side chains as a polymer electrolyte for potential application in lithium metal rechargeable batteries. The trimethylene oxide (TMO) units are attached to the side chains of a polyepoxide ether to maximize the segmental motion. Lithium bis(trifluoromethylsulfonyl)imide (LiTFSI) salt was used to formulate the polymer electrolyte with the new TMO containing polymers. The new polymer electrolytes show improved salt diffusion coefficients (Ds) and conductivity at ambient and subambient temperature compare to the ethylene oxide (EO) counterpart, whereas performance at high temperature (85 °C) remains the same or is actually worse for salt diffusivity.

126

Modeling and Optimization of Polymer based Bulk Heterojunction (BH) Solar cell * Biswajit Ray, Pradeep R. Nair, R. Edwin Garca1  

E-Print Network (OSTI)

of the morphology can double the efficiency of BH cells. 1. Introduction Polymer based organic solar cell remains/devices of organic cells to achievable efficiency. The cartoon of a BH solar cell in Fig. 1a illustrates four keyModeling and Optimization of Polymer based Bulk Heterojunction (BH) Solar cell * Biswajit Ray

Alam, Muhammad A.

127

Solvent effects on gravure-printed organic layers of nanoscale thickness for organic solar cells  

Science Journals Connector (OSTI)

The effects of different solvents on the fabrication of organic photovoltaic cells by gravure printing are reported. Polymer bulk heterojunction solar cells were fabricated with ITO/PEDOT: PSS/P3HT ... of solvent...

Jiyeon Lee; Aran Kim; Sung Min Cho; Heeyeop Chae

2012-03-01T23:59:59.000Z

128

NETL: Novel Inorganic/Polymer Composite Membranes  

NLE Websites -- All DOE Office Websites (Extended Search)

Novel Inorganic/Polymer Composite Membranes Novel Inorganic/Polymer Composite Membranes Project No.: DE-FE0007632 Ohio State University is developing a cost-effective design and manufacturing process for new membrane modules that capture carbon dioxide (CO2) from flue gas. The membranes consist of a thin, selective inorganic layer, embedded in a polymer structure so that it can be made in a continuous manufacturing process. They will be incorporated in spiral-wound modules for bench-scale tests using coal-fired flue gas. Preliminary cost calculations show that a single-stage membrane process is economically unfavorable, primarily because of the low concentration of CO2 (~14 percent) in the flue gas stream. A two-stage process is more economical, but requires plant operation with a CO2-enriched recycle stream.

129

Robust Polymer Composite Membranes for Hydrogen Separation |...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Robust Polymer Composite Membranes for Hydrogen Separation Robust Polymer Composite Membranes for Hydrogen Separation polymercompositemembranes.pdf More Documents & Publications...

130

Solubility properties of siloxane polymers for chemical sensors  

SciTech Connect

This paper discusses the factors governing the sorption of vapors by organic polymers. The principles have been applied in the past for designing and selecting polymers for acoustic wave sensors; however they apply equally well to sorption of vapors by polymers used on optical chemical sensors. A set of solvation parameters (a table is presented for various organic vapors) have been developed that describe the particular solubility properties of individual solute molecules; they are used in linear solvation energy relationships (LSER) that model the sorption process. LSER coefficients are tabulated for five polysiloxanes; so are individual interaction terms for each of the 5 polymers. Dispersion interactions play a major role in determining overall partition coefficients; the log L{sup 16} (gas-liquid partition coefficient of solute on hexadecane) value of vapors are important in determining overall sorption. For the detection of basic vapors such as organophosphates, a hydrogen-bond acidic polymers will be most effective at sorbing them. Currently, fiber optic sensors are being developed where the cladding serves as a sorbent layer to collect and concentrate analyte vapors, which will be detected and identified spectroscopically. These solubility models will be used to design the polymers for the cladding for particular vapors.

Grate, J.W. [Pacific Northwest Lab., Richland, WA (United States); Abraham, M.H. [University College, London (United Kingdom)

1995-05-01T23:59:59.000Z

131

Effect of Stereoregularity on TOF-SIMS Spectra of Polymers  

Science Journals Connector (OSTI)

This study shows the utility of time-of-flight secondary ion mass spectrometry (TOF-SIMS) for the analysis of stereoregular polymers. It is possible to obtain distinctive spectra for...

Zimmerman, Paul A; Hercules, David M

1994-01-01T23:59:59.000Z

132

Electric Field Alignment of Cellulose Based-Polymer Nanocomposites  

E-Print Network (OSTI)

Cellulose whiskers (CWs) obtained from naturally occuring cellulose are nano-inclusions which show a lot of promise as mechanical reinforcements in polymers. Typically, a relatively high content is added to realize improvement in effective...

Kalidindi, Sanjay Varma

2012-07-16T23:59:59.000Z

133

Electrochromic Polymers for Easily Processed Devices John R. Reynolds,* Avni A. Argun, Irina Schwendeman,  

E-Print Network (OSTI)

Electrochromic Polymers for Easily Processed Devices John R. Reynolds,* Avni A. Argun, Irina for electrochromic applications. These polymers exhibit ease of processability and useful mechanical properties (e.g. flexibility). However, the major strength of these organic-based materials is that their electrochromic

Tanner, David B.

134

Light trapping design for low band-gap polymer solar cells  

E-Print Network (OSTI)

Light trapping design for low band-gap polymer solar cells Stephen Foster1,* and Sajeev John1,2 1 demonstrate numerically a 2-D nanostructured design for light trapping in a low band-gap polymer solar cell, "Light harvesting improvement of organic solar cells with self- enhanced active layer designs," Opt

John, Sajeev

135

High-performance organic solar cells based on a low-bandgap poly-thienothiophene-benzodithiophene polymer and fullerene composite prepared by using the airbrush spray-coating technique  

Science Journals Connector (OSTI)

In the present work, we have demonstrated high-performance organic solar cells with spray coated active layers. The influence ... butyric acid (PC71BM) methyl ester bulk heterojunction solar cells is presented. A...

Palanisamy Kumar; Santhakumar Kannappan…

2013-04-01T23:59:59.000Z

136

Pitch of a polymer cholesteric  

Science Journals Connector (OSTI)

Pitch of a polymer cholesteric ... We report measurements of the cholesteric pitch and twist elastic constant (K22) in monodisperse suspensions of the rodlike virus filamentous bacteriophage fd. ... Cholesteric Pitch of Lyotropic Polymer Liquid Crystals ...

Theo. Odijk

1987-01-01T23:59:59.000Z

137

polymers | OpenEI  

Open Energy Info (EERE)

polymers polymers Dataset Summary Description These data files contain volume, mass, and hardness changes of elastomers and plastics representative exposed to gasoline containing various levels of ethanol. These materials are representative of those used in gasoline fuel storage and dispensing hardware. All values are compared to the original untreated condition. The data sets include results from specimens exposed directly to the fuel liquid and also a set of specimens exposed only to the fuel vapors. Source Mike Kass, Oak Ridge National Laboratory Date Released August 16th, 2012 (2 years ago) Date Updated August 16th, 2012 (2 years ago) Keywords compatibility elastomers ethanol gasoline plastics polymers Data application/vnd.openxmlformats-officedocument.spreadsheetml.sheet icon plastics_dma_results_san.xlsx (xlsx, 4.9 MiB)

138

MHK Technologies/Electroactive Polymer Artificial Muscle EPAM | Open Energy  

Open Energy Info (EERE)

Electroactive Polymer Artificial Muscle EPAM Electroactive Polymer Artificial Muscle EPAM < MHK Technologies Jump to: navigation, search << Return to the MHK database homepage Electroactive Polymer Artificial Muscle EPAM.jpg Technology Profile Primary Organization SRI International Technology Resource Click here Wave Technology Type Click here Point Absorber - Floating Technology Description This wave powered generator is unique in that it uses SRI s Electroactive Polymer Artificial Muscle EPAM technology a rubbery material that can generate electricity by simply being stretched and allowed to return to its original shape This artificial muscle technology can generate electricity directly from the motion of waves without the need for complicated and costly hydraulic transmissions that are typically found in other wave power generators

139

“Solar tree”: Exploring new form factors of organic solar cells  

Science Journals Connector (OSTI)

Abstract Organic solar cells have great potential as a clean and renewable solar energy conversion system, due to their low cost materials, ease of production, and lack of harmful emissions. The rapid improvement in organic solar cell performance in recent years has triggered significant interests in developing organic solar cells for commercial applications. Harnessing the unique set of characteristics of organic solar cells, here we demonstrate a new form factor for organic solar cells, a “solar tree” or an electricity-generating artificial tree with organic solar cells as leaves. We first fabricated polymer:fullerene based organic solar cells on flexible plastic substrates that show similar performance to devices on rigid glass substrates using the inverted device structure. Large-area flexible devices were fabricated and cut into palm leaf shapes with an active device area of 6.5 cm2 using a steel rule die. 12 leaf-shaped organic solar cells were then assembled to form a prototype “solar palm tree”. Two different wiring configurations among the devices provided different power delivery modes: a low-voltage, high-current “fan mode” and a high voltage, low-current “LED mode”.

Weiran Cao; Zhifeng Li; Yixing Yang; Ying Zheng; Weijie Yu; Rimza Afzal; Jiangeng Xue

2014-01-01T23:59:59.000Z

140

DSM INVESTS IN MEDICAL POLYMERS  

Science Journals Connector (OSTI)

DSM INVESTS IN MEDICAL POLYMERS ... AS PART OF ITS SHIFT toward the specialty materials business, DSM will acquire Polymer Technology Group (PTG), a privately held maker of biomedical polymers. ... DSM isn’t disclosing the purchase price other than to say it is about 10 times PTG’s annual earnings. ...

MELODY VOITH

2008-05-05T23:59:59.000Z

Note: This page contains sample records for the topic "organic polymers show" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


141

Electromagnetic field optimization for enhancing photovoltaic efficiency of organic solar cells  

Science Journals Connector (OSTI)

The electromagnetic field distribution inside multilayer organic solar cells composed of interpenetrated networks of conjugated polymers is calculated. By enhancing the...

Simon, Jean-Jacques; Torchio, Philippe; Escoubas, Ludovic; Cathelinaud, Michel; Alem, Salima; Nunzi, Jean-Michel

142

Design of light-trapping microscale-textured surfaces for efficient organic solar cells  

Science Journals Connector (OSTI)

Organic photovoltaic (OPV) cells suffer from low charge carrier mobilities of polymers, which renders it important to achieve complete optical absorption in active layers thinner...

Nalwa, Kanwar S; Chaudhary, Sumit

2010-01-01T23:59:59.000Z

143

Oxidative chemical vapor deposition of conductive polymers for use in novel photovoltaic device architectures  

E-Print Network (OSTI)

The conductive polymer poly(3,4-ethylenedioxythiophene), (PEDOT), deposited via oxidative chemical vapor deposition (oCVD) has been investigated for use in organic electronic devices. The oCVD process as well as the ...

Howden, Rachel M. (Rachel Mary)

2013-01-01T23:59:59.000Z

144

Gel polymer electrolytes for batteries  

DOE Patents (OSTI)

Nanostructured gel polymer electrolytes that have both high ionic conductivity and high mechanical strength are disclosed. The electrolytes have at least two domains--one domain contains an ionically-conductive gel polymer and the other domain contains a rigid polymer that provides structure for the electrolyte. The domains are formed by block copolymers. The first block provides a polymer matrix that may or may not be conductive on by itself, but that can soak up a liquid electrolyte, thereby making a gel. An exemplary nanostructured gel polymer electrolyte has an ionic conductivity of at least 1.times.10.sup.-4 S cm.sup.-1 at 25.degree. C.

Balsara, Nitash Pervez; Eitouni, Hany Basam; Gur, Ilan; Singh, Mohit; Hudson, William

2014-11-18T23:59:59.000Z

145

NEXT GENERATION SOLVENT-MATERIALS COMPATIBILITY WITH POLYMER COMPONENTS WITHIN MODULAR CAUSTIC-SIDE SOLVENT EXTRACTION UNIT (FINAL REPORT)  

SciTech Connect

The Office of Waste Processing, within the Office of Technology Innovation and Development, is funding the development of an enhanced solvent for deployment at the Savannah River Site for removal of cesium from High Level Waste. The technical effort is collaboration between Oak Ridge National Laboratory (ORNL), Savannah River National Laboratory (SRNL), and Argonne National Laboratory. The first deployment target for the technology is within the Modular Caustic-Side Solvent Extraction Unit (MCU). Deployment of a new chemical within an existing facility requires verification that the chemical components are compatible with the installed equipment. In the instance of a new organic solvent, the primary focus is on compatibility of the solvent with organic polymers used in the facility. This report provides the data from exposing these polymers to the Next Generation Solvent (NGS). The test was conducted over six months. An assessment of the dimensional stability of polymers present in MCU (i.e., PEEK, Grafoil, Tefzel and Isolast) in the modified NGS (where the concentration of LIX{reg_sign}79 and MaxCalix was varied systematically) showed that LIX{reg_sign}79 selectively affected Tefzel and its different grades (by an increase in size and lowering its density). The copolymer structure of Tefzel and possibly its porosity allows for the easier diffusion of LIX{reg_sign}79. Tefzel is used as the seat material in some of the valves at MCU. Long term exposure to LIX{reg_sign}79, may make the valves hard to operate over time due to the seat material (Tefzel) increasing in size. However, since the physical changes of Tefzel in the improved solvent are comparable to the changes in the CSSX baseline solvent, no design changes are needed with respect to the Tefzel seating material. PEEK, Grafoil and Isolast were not affected by LIX{reg_sign}79 and MaxCalix within six months of exposure. The initial rapid weight gain observed in every polymer is assigned to the finite and limited uptake of Isopar{reg_sign} L/Modifier by the polymers probably due to the polymers porosity and rough surfaces. Spectroscopic data on the organic liquid and the polymer surfaces showed no preferential adsorption of any component in the NGS to the polymers and with the exception of CPVC, no leachate was observed in the NGS from any of the polymers studied. The testing shows no major concerns for compatibility over the short duration of these tests but does indicate that longer duration exposure studies are warranted, especially for Tefzel. However, the physical changes experienced by Tefzel in the improved solvent were comparable to the physical changes obtained when Tefzel is placed in CSSX baseline solvent. Therefore, there is no effect of the improved solvent beyond those observed in CSSX baseline solvent.

Fondeur, F.; Peters, T.; Fink, S.

2012-01-17T23:59:59.000Z

146

Semipermeable polymers and method for producing the same  

DOE Patents (OSTI)

A polyamide membrane including reaction product of an anhydrous solution comprising an anhydrous solvent, at least one polyfunctional secondary amine and a pre-polymer deposition catalyst, and an anhydrous, organic solvent solution comprising a polyfunctional aromatic amine-reactive reactant having one ring. A composite semipermeable membrane including the polyamide membrane on a porous support.

Buschmann, Wayne E

2014-04-01T23:59:59.000Z

147

A Random Loop Model for Long Polymers Manfred Bohn  

E-Print Network (OSTI)

the disorder of loops (i.e., bead-bead interactions) is equivalent to the average over an adequate ensemble organisms, as they are permanently altered by enzymes and protein complexes. We present a new polymer model a general expression for the thermal ensemble average of the squared physical distance between two arbitrary

Heermann, Dieter W.

148

2014 Farm Progress Show | Department of Energy  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Farm Progress Show 2014 Farm Progress Show August 26, 2014 12:00PM EDT to August 28, 2014 9:00PM EDT Boone, Iowa http:farmprogressshow.com...

149

Inside Gun Shows What Goes On  

E-Print Network (OSTI)

Preface Inside Gun Shows What Goes On When Everybody Thinks Nobody's Watching #12;#12;Inside Gun-Violence Effort. She put gun shows on my radar and is an ace straw-purchase spotter. Thanks also to Barbara Claire a great public institution. He was right. #12;Contents Preface Executive Summary Gun Shows in Context How

Leistikow, Bruce N.

150

Inside Gun Shows What Goes On  

E-Print Network (OSTI)

Inside Gun Shows What Goes On When Everybody Thinks Nobody's Watching Epilogue #12;Inside Gun Shows;Epilogue In February 2010, I attended a Crossroads of the West gun show at the Arizona State Fairgrounds here an update on each of the Phoenix obser- vations made in the photo-essay portion of Inside Gun

Leistikow, Bruce N.

151

The Paris Motor Show | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Paris Motor Show Paris Motor Show The Paris Motor Show October 4, 2010 - 9:39am Addthis David Sandalow at the Paris Auto Show | DOE photo David Sandalow at the Paris Auto Show | DOE photo David Sandalow David Sandalow Former Under Secretary of Energy (Acting) and Assistant Secretary for Policy & International Affairs At the Paris Motor Show today, electric cars are everywhere. Chevrolet is showing off the Volt, its plug-in hybrid due in U.S. showrooms this December. (Motown music blared as a Chevy rep told me all about the car's performance.) Nissan is displaying the Leaf, its all-electric sedan scheduled to roll off assembly lines in Tennessee starting in 2012. Volvo has new plug-in models. So do Saab, Peugot and other European manufacturers. And as I walked through the gates in a huge crowd, the first

152

The Paris Motor Show | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

The Paris Motor Show The Paris Motor Show The Paris Motor Show October 4, 2010 - 9:39am Addthis David Sandalow at the Paris Auto Show | DOE photo David Sandalow at the Paris Auto Show | DOE photo David Sandalow David Sandalow Former Under Secretary of Energy (Acting) and Assistant Secretary for Policy & International Affairs At the Paris Motor Show today, electric cars are everywhere. Chevrolet is showing off the Volt, its plug-in hybrid due in U.S. showrooms this December. (Motown music blared as a Chevy rep told me all about the car's performance.) Nissan is displaying the Leaf, its all-electric sedan scheduled to roll off assembly lines in Tennessee starting in 2012. Volvo has new plug-in models. So do Saab, Peugot and other European manufacturers. And as I walked through the gates in a huge crowd, the first

153

Lightweight polymer concrete composites  

SciTech Connect

Lightweight polymer concrete composites have been developed with excellent insulating properties. The composites consist of lightweight aggregates such as expanded perlites, multicellular glass nodules, or hollow alumina silicate microspheres bound together with unsaturated polyester or epoxy resins. These composites, known as Insulating Polymer Concrete (IPC), have thermal conductivites from 0.09 to 0.19 Btu/h-ft-/sup 0/F. Compressive strengths, dependent upon the aggregates used, range from 1000 to 6000 psi. These materials can be precast or cast-in-place on concrete substrates. Recently, it has been demonstrated that these materials can also be sprayed onto concrete and other substrates. An overlay application of IPC is currently under way as dike insulation at an LNG storage tank facility. The composites have numerous potentials in the construction industry such as insulating building blocks or prefabricated insulating wall panels.

Fontana, J.J.; Steinberg, M.; Reams, W.

1985-08-01T23:59:59.000Z

154

Elegant Way of Strengthening Polymer?Polymer Interface Using Nanoclay  

Science Journals Connector (OSTI)

Elegant Way of Strengthening Polymer?Polymer Interface Using Nanoclay ... In this group, montmorillonite (MMT) nanoclay has been employed in numerous polymer nanocomposite systems because it is environmentally friendly, readily available in large quantities, and its intercalation chemistry has been well studied in comparison with other nanoclays (18-20). ... The detection of this interesting behavior of nanoclays in BIMS rubber has prompted us to initiate a detailed investigation into the tackification mechanism of nanoclay in other general purpose elastomers also. ...

Ganesh C. Basak; K. Dinesh Kumar; Abhijit Bandyopadhyay; Anil K. Bhowmick

2010-10-12T23:59:59.000Z

155

Carbon Sequestration in Organic Farming  

Science Journals Connector (OSTI)

Organic farming has been developed as a new mode of farming vs. conventional farming. Evidence showed that organic farming management can well maintain the soil carbon up to 2–3 times higher in organic matter ...

Raymond Liu; Jianming M. Xu; C. Edward Clapp

2013-01-01T23:59:59.000Z

156

Polymer Crowding and Shape Distributions in Polymer-Nanoparticle Mixtures  

E-Print Network (OSTI)

Macromolecular crowding can influence polymer shapes, which is important for understanding the thermodynamic stability of polymer solutions and the structure and function of biopolymers (proteins, RNA, DNA) under confinement. We explore the influence of nanoparticle crowding on polymer shapes via Monte Carlo simulations and free-volume theory of a coarse-grained model of polymer-nanoparticle mixtures. Exploiting the geometry of random walks, we model polymer coils as effective penetrable ellipsoids, whose shapes fluctuate according to the probability distributions of the eigenvalues of the gyration tensor. Accounting for the entropic cost of a nanoparticle penetrating a larger polymer coil, we compute the crowding-induced shift in the shape distributions, radius of gyration, and asphericity of ideal polymers in a theta solvent. With increased nanoparticle crowding, we find that polymers become more compact (smaller, more spherical), in agreement with predictions of free-volume theory. Our approach can be easily extended to nonideal polymers in good solvents and used to model conformations of biopolymers in crowded environments.

Wei Kang Lim; Alan R. Denton

2014-10-24T23:59:59.000Z

157

Metal-Polymer Interactions in a Polymer/Metal Nanocomposite  

Science Journals Connector (OSTI)

A poly(t-butyl acrylate)/gold nanocomposite sandwich was annealed to induce diffusion of the gold particles, which was monitored using Rutherford backscattering spectrometry. Marker motion experiments were also performed to probe particle and polymer mobilities independently. The experiments revealed that particle mobility was decreased by 2 to 3 orders of magnitude compared with the predictions by Stokes-Einstein theory. Diffusion of polymer molecules through a gold particle layer is decreased by a much smaller extent. These results are attributed to bridging between particles arising from slow exchange kinetics of polymer segments at the polymer/metal interface.

Douglas H. Cole; Kenneth R. Shull; L. E. Rehn; P. Baldo

1997-06-30T23:59:59.000Z

158

Polymer Thermodynamics and Chain Structure Polymers display some similarities and some differences with nano-aggregates.  

E-Print Network (OSTI)

for aggregates and by the late Paul Flory of Stanford for polymer coils. Since the spring constant of a polymer of a polymer coil is largely determined by entropy, an individual polymer coil displays an increasing spring an aggregate in nanomaterials and a polymer coil in Polymer Science. The mass-fractal or minimum dimension

Beaucage, Gregory

159

Laser research shows promise for cancer treatment  

NLE Websites -- All DOE Office Websites (Extended Search)

Cancer treatment Laser research shows promise for cancer treatment Scientists have observed for the first time how a laser penetrates dense, electron-rich plasma to generate ions....

160

Explore Guerrilla Marketing Potentials for Trade Show.  

E-Print Network (OSTI)

??This is an exploratory research paper trying to identify effective guerrilla marketing practices in solving tradeshow marketing challenges. Major problems faced by trade show marketers… (more)

Chen, Jie

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "organic polymers show" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

MST: Organizations: Organic Materials  

NLE Websites -- All DOE Office Websites (Extended Search)

Adhesive Bonding Adhesive Bonding Composites Encapsulation Materials Characterization Mechanical Testing Molding, Thermoforming, & Compounding Organizations Organic Materials Composite-to-metal adhesive bond Experimental/analytical study of composit-to-metal adhesive bond. The Organic Materials department in the Advanced Manufacturing and Processing Laboratory provides innovative prototype fabrication, full service small lot production, materials technology, processing expertise, and a broad range of organic material characterization and mechanical testing techniques. We encapsulate, we join and bond, we foam, we analyze and image, we build composite structures. We strive to make you, our customers, successful! We partner with you to find the right combination of materials, processing, and fixturing that will result in the highest value

162

Organic Vegetable Organic Vegetable  

E-Print Network (OSTI)

marketed separately from conventionally grown produce in order to be profitably sold. Because of the amount of organic material include compost, Purdue University · Cooperative Extension Service · Knowledge to Go

163

Photochemical Crosslinking Reactions in Polymers.  

E-Print Network (OSTI)

??The post-synthesis modification of polymer properties has very broad applications in industry. It is employed to produce products that are impossible to directly synthesize, modify… (more)

Carbone, Nicholas

2012-01-01T23:59:59.000Z

164

Acoustic emission during polymer crystallization  

Science Journals Connector (OSTI)

... .G.; part support to L.K.) Acoustic Emission, Special Technical Publication 505, ASTM, Philadelphia, 1971; Grabec, I. & Peterlin, A. J. Polymer Sci. ...

A. Galeski; L. Koenczoel; E. Piorkowska; E. Baer

1987-01-01T23:59:59.000Z

165

Photopatterned conjugated polymer electrochromic nanofibers Arvind Kumara  

E-Print Network (OSTI)

Photopatterned conjugated polymer electrochromic nanofibers on paper Arvind Kumara , Chris Asemotaa. Electrochromic nanofibers of conducting polymer (terthiophene) have been deposited over a conventional paper in electrochromic characters. SEM images of the conducting polymer nanofibers together with the cellulose fibers

Otero, Toribio Fernández

166

Organic Solar Cells with Inverted and Tandem Structures  

Science Journals Connector (OSTI)

During the past decade, organic solar cells have attracted great attention due to their ... Although the technologies of small molecule and polymer solar cells have advanced significantly, the efficiency and stab...

De Wei Zhao; Aung Ko Ko Kyaw; Xiao Wei Sun

2011-01-01T23:59:59.000Z

167

Method for separating water soluble organics from a process stream by aqueous biphasic extraction  

DOE Patents (OSTI)

A method for separating water-miscible organic species from a process stream by aqueous biphasic extraction is provided. An aqueous biphase system is generated by contacting a process stream comprised of water, salt, and organic species with an aqueous polymer solution. The organic species transfer from the salt-rich phase to the polymer-rich phase, and the phases are separated. Next, the polymer is recovered from the loaded polymer phase by selectively extracting the polymer into an organic phase at an elevated temperature, while the organic species remain in a substantially salt-free aqueous solution. Alternatively, the polymer is recovered from the loaded polymer by a temperature induced phase separation (cloud point extraction), whereby the polymer and the organic species separate into two distinct solutions. The method for separating water-miscible organic species is applicable to the treatment of industrial wastewater streams, including the extraction and recovery of complexed metal ions from salt solutions, organic contaminants from mineral processing streams, and colorants from spent dye baths.

Chaiko, David J. (Naperville, IL); Mego, William A. (Naperville, IL)

1999-01-01T23:59:59.000Z

168

International Builders' Show | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Builders' Show Builders' Show International Builders' Show February 14, 2008 - 11:29am Addthis Remarks as Prepared for Delivery by Secretary Bodman Thank you, Andy, and thank you all for being here. The world has reached an energy crossroads. Rising global energy demand and the need for more environmentally-responsible energy production and consumption have presented us with a number of global challenges that require global solutions. Every American has a role to play in meeting these challenges. And that's why I am very pleased to be here at the International Builders' Show, to tour the floor and to see the technologies that are penetrating the marketplace - many of which originated in DOE's network of world-class national laboratories. I also pleased to be here with the National Association of Home Builders

169

2013 Washington Auto Show | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

2013 Washington Auto Show 2013 Washington Auto Show 2013 Washington Auto Show Addthis 1 of 10 While at the Washington Auto Show, Energy Secretary Steven Chu visited Nissan to see the 2013 Leaf. | Photo courtesy of Sarah Gerrity, Energy Department. Date taken: 2013-01-31 13:50 2 of 10 The new Nissan Leaf is being built at the company's Smyrna, Tennessee, Vehicle Assembly Plant -- helping to cut the price of its electric vehicle. | Photo courtesy of Sarah Gerrity, Energy Department. Date taken: 2013-01-31 13:49 3 of 10 Energy Secretary Steven Chu discusses the features of the 2014 Cadillac ELR -- the luxury car built built on the same powertrain platform as the Chevy Volt. | Photo courtesy of Sarah Gerrity, Energy Department. Date taken: 2013-01-31 13:57 4 of 10 Energy Secretary Steven Chu discusses some of the features of the Chevy

170

MagLab - Science Show and Tell  

NLE Websites -- All DOE Office Websites (Extended Search)

Arrow Meet the Magnets Arrow Q & A Arrow World Records Arrow By the Numbers Arrow Science Show & Tell Arrow Audio Slideshows Arrow History & Timeline Arrow Look Whos at the...

171

Recombination in polymer-fullerene bulk heterojunction solar cells  

Science Journals Connector (OSTI)

Recombination of photogenerated charge carriers in polymer bulk heterojunction (BHJ) solar cells reduces the short circuit current (Jsc) and the fill factor (FF). Identifying the mechanism of recombination is, therefore, fundamentally important for increasing the power conversion efficiency. Light intensity and temperature-dependent current-voltage measurements on polymer BHJ cells made from a variety of different semiconducting polymers and fullerenes show that the recombination kinetics are voltage dependent and evolve from first-order recombination at short circuit to bimolecular recombination at open circuit as a result of increasing the voltage-dependent charge carrier density in the cell. The “missing 0.3 V” inferred from comparison of the band gaps of the bulk heterojunction materials and the measured open-circuit voltage at room-temperature results from the temperature dependence of the quasi-Fermi levels in the polymer and fullerene domains—a conclusion based on the fundamental statistics of fermions.

Sarah R. Cowan; Anshuman Roy; Alan J. Heeger

2010-12-16T23:59:59.000Z

172

Communication: Thermodynamic analysis of critical conditions of polymer adsorption  

SciTech Connect

Polymer adsorption to solid surfaces is a ubiquitous phenomenon, which has attracted long-lasting attention. Dependent on the competition between the polymer-solid adsorption and polymer-solvent solvation interactions, a chain may assume either 3d solvated conformation when adsorption is weak or 2d adsorbed conformation when adsorption is strong. The transition between these conformations occurring upon variation of adsorption strength is quite sharp, and in the limit of “infinite” chain length, can be treated as a critical phenomenon. We suggest a novel thermodynamic definition of the critical conditions of polymer adsorption from the equality of incremental chemical potentials of adsorbed and free chains. We show with the example of freely jointed Lennard-Jones chains tethered to an adsorbing surface that this new definition provides a link between thermodynamic and geometrical features of adsorbed chains and is in line with classical scaling relationships for the fraction of adsorbed monomers, chain radii of gyration, and free energy.

Cimino, R.; Neimark, A. V., E-mail: aneimark@rutgers.edu [Department of Chemical and Biochemical Engineering, Rutgers, The State University of New Jersey, 98 Brett Road, Piscataway, New Jersey 08854 (United States); Rasmussen, C. J. [DuPont Central Research and Development, Corporate Center for Analytical Sciences, Macromolecular Characterization, Route 141 and Henry Clay, Wilmington, Delaware 19803 (United States)] [DuPont Central Research and Development, Corporate Center for Analytical Sciences, Macromolecular Characterization, Route 141 and Henry Clay, Wilmington, Delaware 19803 (United States)

2013-11-28T23:59:59.000Z

173

Hybrid Silicon Nanocone–Polymer Solar Cells  

Science Journals Connector (OSTI)

Hybrid Silicon Nanocone–Polymer Solar Cells ... In this study, we demonstrate a hybrid solar cell composed of Si nanocones and conductive polymer. ...

Sangmoo Jeong; Erik C. Garnett; Shuang Wang; Zongfu Yu; Shanhui Fan; Mark L. Brongersma; Michael D. McGehee; Yi Cui

2012-04-30T23:59:59.000Z

174

Webinar: Hydrogen Production by Polymer Electrolyte Membrane...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Production by Polymer Electrolyte Membrane (PEM) Electrolysis-Spotlight on Giner and Proton Webinar: Hydrogen Production by Polymer Electrolyte Membrane (PEM) Electrolysis-Spotligh...

175

Detroit Auto Show 2012 | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Detroit Auto Show 2012 Detroit Auto Show 2012 Detroit Auto Show 2012 Addthis 1 of 10 Energy Secretary Steven Chu with Chrysler Chief Executive Sergio Marchionne. Image: Hantz Leger (Energy Department Contractor) Date taken: 2012-01-10 00:00 2 of 10 Energy Secretary Steven Chu examines the Dodge Dart's four cylinder, 2.4-liter, 184 horsepower engine block. Image: Hantz Leger (Energy Department Contractor) Date taken: 2012-01-10 00:00 3 of 10 Energy Secretary Steven Chu gets behind the wheel of the new 2013 Dodge Dart. Image: Hantz Leger (Energy Department Contractor) Date taken: 2012-01-10 00:00 4 of 10 Energy Secretary Steven Chu examines the interior of the new 2013 Dodge Dart. Image: Hantz Leger (Energy Department Contractor) Date taken: 2012-01-10 00:00 5 of 10 Energy Secretary Steven Chu discusses the latest auto innovations with a

176

Show Me Ethanol LLC | Open Energy Information  

Open Energy Info (EERE)

Show Me Ethanol LLC Show Me Ethanol LLC Jump to: navigation, search Name Show Me Ethanol, LLC Place Carrollton, Missouri Zip 64633 Product Developing an ethanol project in Carrollton, Missouri. Coordinates 36.935443°, -76.531593° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":36.935443,"lon":-76.531593,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

177

Vacuum flash evaporated polymer composites  

DOE Patents (OSTI)

A method for fabrication of polymer composite layers in a vacuum is disclosed. More specifically, the method of dissolving salts in a monomer solution, vacuum flash evaporating the solution, condensing the flash evaporated solution as a liquid film, and forming the condensed liquid film into a polymer composite layer on a substrate is disclosed.

Affinito, J.D.; Gross, M.E.

1997-10-28T23:59:59.000Z

178

Materials - Recycling - Polymer Matrix Composites  

NLE Websites -- All DOE Office Websites (Extended Search)

Recycling of Polymer Matrix Composites Recycling of Polymer Matrix Composites Polymer matrix composites Carbon fibers recovered from a epoxy-based polymer matrix composite. Carbon fiber reinforced polymer matrix composites (PMCs) are materials with superior strength-to-weight ratios. Finding increased applications in the aerospace industry, PMCs are now being evaluated for possible use in automobile construction. The materialÂ’s high cost, however, along with concerns about whether the PMCs will be recyclable when the vehicles reach the end of their useful lives, are barriers to its widespread use. With funding provided by the U.S. Department of EnergyÂ’s Vehicle Technologies Program (formerly called the Office of Advanced Transportation Technologies), Argonne is developing an efficient and cost-effective

179

Accelerated Characterization of Polymer Properties  

SciTech Connect

This report describes the efforts to develop a suite of microanalysis techniques that can rapidly measure a variety of polymer properties of industrial importance, including thermal, photo-oxidative, and color stability; as well as ductility, viscosity, and mechanical and antistatic properties. Additional goals of the project were to direct the development of these techniques toward simultaneous measurements of multiple polymer samples of small size in real time using non-destructive and/or parallel or rapid sequential measurements, to develop microcompounding techniques for preparing polymers with additives, and to demonstrate that samples prepared in the microcompounder could be analyzed directly or used in rapid off-line measurements. These enabling technologies are the crucial precursors to the development of high-throughput screening (HTS) methodologies for the polymer additives industry whereby the rate of development of new additives and polymer formulations can be greatly accelerated.

R. Wroczynski; l. Brewer; D. Buckley; M. Burrell; R. Potyrailo

2003-07-30T23:59:59.000Z

180

Fundamental studies of polymer filtration  

SciTech Connect

This is the final report of a one-year, Laboratory Directed Research and Development (LDRD) project at Los Alamos National Laboratory (LANL). The objectives of this project were (1) to develop an enhanced fundamental understanding of the coordination chemistry of hazardous-metal-ion complexation with water-soluble metal-binding polymers, and (2) to exploit this knowledge to develop improved separations for analytical methods, metals processing, and waste treatment. We investigated features of water-soluble metal-binding polymers that affect their binding constants and selectivity for selected transition metal ions. We evaluated backbone polymers using light scattering and ultrafiltration techniques to determine the effect of pH and ionic strength on the molecular volume of the polymers. The backbone polymers were incrementally functionalized with a metal-binding ligand. A procedure and analytical method to determine the absolute level of functionalization was developed and the results correlated with the elemental analysis, viscosity, and molecular size.

Smith, B.F.; Lu, M.T.; Robison, T.W.; Rogers, Y.C.; Wilson, K.V.

1998-12-31T23:59:59.000Z

Note: This page contains sample records for the topic "organic polymers show" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

Inside Gun Shows What Goes On  

E-Print Network (OSTI)

, particularly in Canada and Mexico. There is solid evidence, primarily from investigations of illegal gun trafficking, that gun shows are an important source of crime guns. But less than 2% of felons incarcerated as 40% of all gun sales. They are quick and convenient, and their anonymity will attract those who put

Nguyen, Danh

182

Contracting Polymer with Current  

NLE Websites -- All DOE Office Websites (Extended Search)

Contracting Polymer with Current Contracting Polymer with Current Name: Ian Status: student Grade: 9-12 Location: PA Country: USA Date: Summer 2011 Question: Hello and thank you in advance. I have previously read of a material ( a kind of "rubber") that contracts when an electric current is applied. My question is what is this material, how does it work/what is it made of? Thank you very much. Replies: Hi Ian, I believe the material you are referring to is a kind of piezoelectric rubber. Piezoelectric materials (usually they are special types of ceramics or crystals) produce an electrical voltage when compressed of otherwise subjected to stress. They also do the opposite... they slightly expand or contract when a voltage is applied. But the amount they expand or contract is very small indeed. For example, one square meter of the recently discovered piezoelectric rubber materials typically contracts a mere 100 picometers for ever applied volt. Translated into everyday measurements, this means that if you apply a voltage of 1 Volt to a one foot long piece of this rubber, it will only contract less than half a billionth of an inch! Applying 100 volts will cause it to contract just under 50 billionths of an inch!

183

Soluble polyacetylenic and polyaromatic polymers and method of mking the same  

DOE Patents (OSTI)

A soluble polyene polymer and a method of making the same are disclosed. The polymer is of the class suitable for doping to produce an electrically conductive polymer. The method is generally applicable to acetylenic and aromatic monomers, proven examples of which include acetylene, benzene, anthracene and napthalene. In accordance with the method, the monomer is dissolved in arsenic trifluoride. Arsenic pentafluoride is then introduced into the solution to induce polymerization by what is speculated to be an ionic polymerization reaction. The resulting polymer differs from other polyene polymers in that it is soluble in common organic solvents, and further in that it can be melted without undergoing decomposition, thereby rendering it particularly suitable for processing to form various polymeric articles.

Aldissi, M.; Liepins, R.

1983-12-16T23:59:59.000Z

184

Exciton splitting and carrier transport across the amorphous-silicon/ polymer solar cell interface  

E-Print Network (OSTI)

of bilayer hybrid solar cells to better understand the physics controlling organic-inorganic device of Physics. DOI: 10.1063/1.2408641 Hybrid organic-inorganic solar cells combine the pro- cessabilityExciton splitting and carrier transport across the amorphous-silicon/ polymer solar cell interface

McGehee, Michael

185

Conjugated polymer electroluminescence: technical aspects from basic devices to commercial products  

Science Journals Connector (OSTI)

...in the design of the active semi- conductors...bility of the organic materials in an LEP device, are...morphological effects in the active organic layers are par...matrix placed under the cathode can dramatically increase...the polymer layers, materials requirements are very...

1997-01-01T23:59:59.000Z

186

Nutrition and Feeding of Show Poultry  

E-Print Network (OSTI)

There are four important prin- ciples in developing an appropri- ate nutrition program for show broilers and turkeys. Principle 1: To grow, birds must eat and drink. I nadequate feed stunts develop- ment and prevents birds from growing... to their potential. Since birds grow quickly, if their feed consumption decreases even a few hours, their ultimate body size can be signif_i- cantly diminished. Several factors can cause birds to eat less than they should. These factors are: feed availability, water...

Cartwright, A. Lee

2003-11-03T23:59:59.000Z

187

Dynamics at the Polymer/Nanoparticle Interface in Poly(2-vinylpyridine)/Silica Nanocomposites.  

SciTech Connect

The static and dynamic properties of poly(2-vinylpyridine)/silica nanocomposites are investigated by temperature modulated differential scanning calorimetry, broadband dielectric spectroscopy (BDS), small-angle X-ray scattering (SAXS), and transmission electron microscopy. Both BDS and SAXS detect the existence of an interfacial polymer layer on the surface of nanoparticles. The results show that whereas the calorimetric glass transition temperature varies only weakly with nanoparticle loading, the segmental mobility of the polymer interfacial layer is slower than the bulk polymer by 2 orders of magnitude. Detailed analysis of BDS and SAXS data reveal that the interfacial layer has a thickness of 4 6 nm irrespective of the nanoparticle concentration. These results demonstrate that in contrast to some recent articles on polymer nanocomposites, the interfacial polymer layer is by no means a dead layer . However, its existence might provide some explanation for controversies surrounding the dynamics of polymer nanocomposites.

Holt, Adam P [ORNL] [ORNL; Griffin, Phillip [University of Tennessee (UTK) and Oak Ridge National Laboratory (ORNL)] [University of Tennessee (UTK) and Oak Ridge National Laboratory (ORNL); Bocharova, Vera [ORNL] [ORNL; Agapov, Alexander L [ORNL] [ORNL; Imel, Adam E [ORNL] [ORNL; Dadmun, Mark D [ORNL] [ORNL; Sangoro, Joshua R [ORNL] [ORNL; Sokolov, Alexei P [ORNL] [ORNL

2014-01-01T23:59:59.000Z

188

Carbon nanotube-polymer composite actuators  

DOE Patents (OSTI)

The present invention discloses a carbon nanotube (SWNT)-polymer composite actuator and method to make such actuator. A series of uniform composites was prepared by dispersing purified single wall nanotubes with varying weight percents into a polymer matrix, followed by solution casting. The resulting nanotube-polymer composite was then successfully used to form a nanotube polymer actuator.

Gennett, Thomas (Denver, CO); Raffaelle, Ryne P. (Honeoye Falls, NY); Landi, Brian J. (Rochester, NY); Heben, Michael J. (Denver, CO)

2008-04-22T23:59:59.000Z

189

The workshop on conductive polymers: Final report  

SciTech Connect

Reports are made by groups on: polyacetylene, polyphenylene, polyaniline, and related systems; molecular, crystallographic, and defect structures in conducting polymers; heterocyclic polymers; synthesis of new and improved conducting polymers; future applications possibilities for conducting polymers; and challenges for improved understanding of properties. (DLC)

Not Available

1985-01-01T23:59:59.000Z

190

Four-dimensional polymer collapse: Pseudo-first-order transition in interacting self-avoiding walks  

E-Print Network (OSTI)

Four-dimensional polymer collapse: Pseudo-first-order transition in interacting self-avoiding walks, the canonical lattice model of polymer collapse, namely, interacting self-avoiding walks, to show. The resolution of these seemingly incompatible conclusions involves the argument that the first

Prellberg, Thomas

191

Synthesis of Thermal Interface Materials Made of Metal Decorated Carbon Nanotubes and Polymers  

E-Print Network (OSTI)

showed promise in their ability to have significant increase in thermal conduction while retaining the polymer’s mechanical properties. The highest k value that was obtained was 0.72 W/m-K for a well dispersed aligned 5 wt percent Ni@MWCNT sample. The Cu...

Okoth, Marion Odul

2011-10-21T23:59:59.000Z

192

Conductivity enhancement of carbon nanotube and nanofiber-based polymer nanocomposites by melt annealing  

E-Print Network (OSTI)

on a much larger scale using conventional polymer processing tech- niques such as single-screw or twin-screw to make polymer­MWCNT/CNF nanocomposites via twin-screw extrusion. To our surprise, the conductivities of extruded samples were disappointingly low. Indeed, an examina- tion of the literature on this topic shows

Raghavan, Srinivasa

193

Science Organizations  

NLE Websites -- All DOE Office Websites (Extended Search)

Organizations Science Organizations National security depends on science and technology. The United States relies on Los Alamos National Laboratory for the best of both. No place...

194

Thermodynamics of tubelike flexible polymers  

E-Print Network (OSTI)

In this work we present the general phase behavior of short tubelike flexible polymers. The geometric thickness constraint is implemented through the concept of the global radius of curvature. We use sophisticated Monte Carlo sampling methods to simulate small bead-stick polymer models with Lennard-Jones interaction among non-bonded monomers. We analyze energetic fluctuations and structural quantities to classify conformational pseudophases. We find that the tube thickness influences the thermodynamic behavior of simple tubelike polymers significantly, i.e., for given temperature, the formation of secondary structures strongly depends on the tube thickness.

Thomas Vogel; Thomas Neuhaus; Michael Bachmann; Wolfhard Janke

2009-07-17T23:59:59.000Z

195

Thermodynamics of tubelike flexible polymers  

Science Journals Connector (OSTI)

In this work, we discuss the general phase behavior of short tubelike flexible polymers. The geometric thickness constraint is implemented through the concept of the global radius of curvature. We use sophisticated Monte Carlo sampling methods to simulate small bead-stick polymer models with Lennard-Jones interaction among nonbonded monomers. We analyze energetic fluctuations and structural quantities to classify conformational pseudophases. We find that the tube thickness influences the thermodynamic behavior of simple tubelike polymers significantly, i.e., for a given temperature, the formation of secondary structures strongly depends on the tube thickness.

Thomas Vogel; Thomas Neuhaus; Michael Bachmann; Wolfhard Janke

2009-07-16T23:59:59.000Z

196

Self-Assembling Efficient Organic Electronics  

NLE Websites -- All DOE Office Websites (Extended Search)

Self-Assembling Efficient Organic Electronics Self-Assembling Efficient Organic Electronics Speaker(s): Rachel Segalman Date: April 26, 2005 - 12:00pm Location: Bldg. 90 Seminar Host/Point of Contact: Venkat Srinivasan In the last decade, the use of self-assembling block copolymers to nanopattern substrates and template synthesis has made incredible gains as a primary step towards the fabrication of nanodevices. Many studies have demonstrated a sophisticated level of control over the self-assembling, coil-type polymer systems to produce long range order. The knowledge now exists to begin to pattern polymers with a much higher degree of complexity and inherent functionality. It is apparent, for instance, that the mesostructure of conductive polymers impacts their luminescence and photovoltaic efficiency. For instance, block copolymers made from

197

Metal catalyzed synthesis of hyperbranched ethylene and/or .alpha.-olefin polymers  

DOE Patents (OSTI)

Oily hyperbranched polymers derived from ethylene, propylene, butene and/or a C.sub.5 -C.sub.24 .alpha.-olefin, and a method for their synthesis, are disclosed. The polymers have non-regular microstructures and are characterized by a ratio ({character pullout})of methyl hydrogens centered around 0.85 ppm on the 1H-NMR spectra of the polymers relative to total aliphatic hydrogens of from about 0.40 to about 0.65 for polymers derived from ethylene or butene, and a ratio ({character pullout})of from greater than 0.50 to about 0.65 for polymers derived from propylene. A method for grafting hyperbranched polymers derived from ethylene, propylene, butene and/or a C.sub.5 -C.sub.24 .alpha.-olefin onto aromatic rings in organic molecules and polymers, and the resulting grafted materials, are also disclosed. The hyperbranched polymers and grafted materials are useful, for example, as lubricants and lubricant additives.

Sen, Ayusman (State College, PA); Kim, Jang Sub (State College, PA); Pawlow, James H. (Gainesville, FL); Murtuza, Shahid (State College, PA); Kacker, Smita (Annandale, NJ); Wojcinski, III, Louis M. (State College, PA)

2001-01-01T23:59:59.000Z

198

Polymer-cement geothermal-well-completion materials. Final report  

SciTech Connect

A program to develop high-temperature polymer cements was performed. Several formulations based on organic and semi-inorganic binders were evaluated on the basis of mechanical and thermal stability, and thickening time. Two optimized systems exhibited properties exceeding those required for use in geothermal wells. Both systems were selected for continued evaluation at the National Bureau of Standards and contingent upon the results, for field testing in geothermal wells.

Zeldin, A.N.; Kukacka, L.E.

1980-07-01T23:59:59.000Z

199

Study of surface enhanced resonant Raman spectroscopy of chromophores on unaggregated plasmonically active nanoparticles / Surface-enhanced Raman study of the interaction of the PEDOT:PSS and P3HT/PCBM components of organic polymer solar cells with plasmonically active nanoparticles  

E-Print Network (OSTI)

Light Collection in Organic Solar Cells. Appl. Phys. Lett.Performance of Organic Solar Cells using Electrodeposited AgHybrid Plasmonic Organic Solar Cells with Ag Nanoparticles.

Stavytska-Barba, Marina Valeriyivna

2012-01-01T23:59:59.000Z

200

Exciton splitting and carrier transport across the amorphous-silicon/polymer solar cell interface  

Science Journals Connector (OSTI)

The authors study exciton splitting at the interface of bilayer hybridsolar cells to better understand the physics controlling organic-inorganicdevice performance. Hydrogenated amorphous silicon ( a - Si : H ) ? poly ( 3 - hexylthiophene ) (P3HT) and a - Si : H ? poly ( 2 - methoxy - 5 - ( 2 ? - ethyl - hexyloxy ) - 1 4 - phenylenevinylene ) (MEH-PPV) solar cells show photoresponse dominated by exciton production in the polymer. The a - Si : H ? P 3 HT devices are nearly as efficient as titania/P3HT cells. However the a - Si : H ? MEH - PPV system has much lower photocurrent than a - Si : H ? P 3 HT likely due to inefficient hole transfer back to the MEH-PPV after energy transfer from MEH-PPV to a - Si : H .

Vignesh Gowrishankar; Shawn R. Scully; Michael D. McGehee; Qi Wang; Howard M. Branz

2006-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "organic polymers show" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

Quality control of polymer solar modules by lock-in thermography  

Science Journals Connector (OSTI)

We have characterized lateral imperfections of photovoltaic modules based on solution processed polymer-fullerene semiconductor blends by means of lock-in thermography (LIT). The active layer of the solar cell modules is based on the heterogeneous organic semiconductor system poly(3-hexylthiophene):phenyl- C 61 -butyric acid methyl ester and the power conversion efficiency of the modules reached nearly 2% under irradiation of an AM 1.5 solar simulator. Applying highly sensitive LIT allowed us to detect several kinds of laterally distributed defects originating from imperfections in the respective functional layers as well as in the quality of encapsulation. We show that LIT is a powerful method for the quality control of large area polymersolar cells and modules enabling fast feedback for optimization of production parameters.

Harald Hoppe; Jonas Bachmann; Burhan Muhsin; Karl-Heinz Drüe; Ingo Riedel; Gerhard Gobsch; Claudia Buerhop-Lutz; Christoph J. Brabec; Vladimir Dyakonov

2010-01-01T23:59:59.000Z

202

A conjugated polymer plastic gel  

E-Print Network (OSTI)

We present a gel route to process highly oriented conjugated polymer films and fibers. The incorporation of hexafluoroisopropanol, a strong and stable dipolar group, to the polythiophene backbone enhances the solubility ...

Alcazar Jorba, Daniel

2008-01-01T23:59:59.000Z

203

Polymers For Advanced Lithium Batteries  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Accomplishments 1 m SEM of cathode LiFePO 4 +Binder (5050) Nothing else, no optimization Li metal (anode) Al current collector Polymer electrolyte membrane (S-EO-S)...

204

Polymers, Fractals, and Ceramic Materials  

Science Journals Connector (OSTI)

...application primarily as optical coatings and aerogels. Aerogels (1...4) Gelation //Polymer x Coating_rn Film Monomer Aggregation...Sintering.......... Aerogel Monolith Fig. 1. Ceramic...desired for index-matched coatings, then base-catalyzed materials...

DALE W. SCHAEFER

1989-02-24T23:59:59.000Z

205

Layered plasma polymer composite membranes  

DOE Patents (OSTI)

Layered plasma polymer composite fluid separation membranes are disclosed, which comprise alternating selective and permeable layers for a total of at least 2n layers, where n is [>=]2 and is the number of selective layers. 2 figs.

Babcock, W.C.

1994-10-11T23:59:59.000Z

206

Characterization of macro-length conducting polymers and the development of a conducting polymer rotary motor  

E-Print Network (OSTI)

Conducting polymers are a subset of materials within the electroactive polymer class that exhibit active mechanical deformations. These deformations induce stresses and strains that allow for conducting polymers to be used ...

Schmid, Bryan D. (Bryan David), 1981-

2005-01-01T23:59:59.000Z

207

Thermal stability of organic solar cells: the decay in photocurrent linked with changes in active layer morphology  

Science Journals Connector (OSTI)

Nowadays bulk heterojunction polymer:fullerene (PCBM) solar cells reach efficiencies of 5% through the ... . One of the general bottlenecks of organic solar cells is their poor stability. Organic solar cells have...

S. Bertho; I. Haeldermans; A. Swinnen…

2008-01-01T23:59:59.000Z

208

Viscosity of Ring Polymer Melts  

Science Journals Connector (OSTI)

Viscosity of Ring Polymer Melts ... The ratio of the zero-shear viscosities of linear polymer melts ?0,linear to their ring counterparts ?0,ring at isofrictional conditions is discussed as a function of the number of entanglements Z. ... For this reason we have determined the viscosities by fitting the complex viscosity curves with different methods to obtain reliable estimates and error bars (see Supporting Information). ...

Rossana Pasquino; Thodoris C. Vasilakopoulos; Youn Cheol Jeong; Hyojoon Lee; Simon Rogers; George Sakellariou; Jürgen Allgaier; Atsushi Takano; Ana R. Brás; Taihyun Chang; Sebastian Gooßen; Wim Pyckhout-Hintzen; Andreas Wischnewski; Nikos Hadjichristidis; Dieter Richter; Michael Rubinstein; Dimitris Vlassopoulos

2013-09-17T23:59:59.000Z

209

High cation transport polymer electrolyte  

DOE Patents (OSTI)

A solid state ion conducting electrolyte and a battery incorporating same. The electrolyte includes a polymer matrix with an alkali metal salt dissolved therein, the salt having an anion with a long or branched chain having not less than 5 carbon or silicon atoms therein. The polymer is preferably a polyether and the salt anion is preferably an alkyl or silyl moiety of from 5 to about 150 carbon/silicon atoms.

Gerald, II, Rex E. (Brookfield, IL); Rathke, Jerome W. (Homer Glen, IL); Klingler, Robert J. (Westmont, IL)

2007-06-05T23:59:59.000Z

210

Organization | Department of Energy  

Energy Savers (EERE)

About Us Organization Organization Organization Printable PDF News & Blog CIO Leadership Organization Contact Us...

211

Organization | Department of Energy  

Office of Environmental Management (EM)

About Us Organization Organization Organization News Leadership Organization History Careers Contact Us...

212

High Temperature Polymer Membrane Development at Argonne National...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Polymer Membrane Development at Argonne National Laboratory High Temperature Polymer Membrane Development at Argonne National Laboratory Summary of ANL's high temperature polymer...

213

Hydrogen-Bond Acidic Polymers for Chemical Vapor Sensing. | EMSL  

NLE Websites -- All DOE Office Websites (Extended Search)

Acidic Polymers for Chemical Vapor Sensing. Hydrogen-Bond Acidic Polymers for Chemical Vapor Sensing. Abstract: A review with 171 references. Hydrogen-bond acidic polymers for...

214

Methods and systems for chemoautotrophic production of organic compounds  

DOE Patents (OSTI)

The present disclosure identifies pathways, mechanisms, systems and methods to confer chemoautotrophic production of carbon-based products of interest, such as sugars, alcohols, chemicals, amino acids, polymers, fatty acids and their derivatives, hydrocarbons, isoprenoids, and intermediates thereof, in organisms such that these organisms efficiently convert inorganic carbon to organic carbon-based products of interest using inorganic energy, such as formate, and in particular the use of organisms for the commercial production of various carbon-based products of interest.

Fischer, Curt R.; Che, Austin J.; Shetty, Reshma P.; Kelly, Jason R.

2013-01-08T23:59:59.000Z

215

Scientists at ALS Find New Path to More Efficient Organic Solar Cells  

NLE Websites -- All DOE Office Websites (Extended Search)

Scientists at ALS Find New Path to Scientists at ALS Find New Path to More Efficient Organic Solar Cells Scientists at ALS Find New Path to More Efficient Organic Solar Cells Print Monday, 07 January 2013 00:00 Harald Ade, a physicist at North Carolina State University, led a study at the Advanced Light Source that revealed a second pathway to improved performances of polymer/organic solar cells. Whereas the first pathway demands crystals of ultrapure domains, the new pathway shows that impure domains if sufficiently small can also lead to improved photovoltaic performances. Also working on this project were Brian Collins, Zhe Li, John Tumbleston, Eliot Gann and Christopher McNeill. Read the News Release Molecular view of polymer/fullerene solar film showing an interface between acceptor and donor domains. Red dots are PC71BM molecules and blue lines represent PTB7 chains. Excitons are shown as yellow dots, purple dots are electrons and green dots represent holes

216

Folded reflective tandem polymer solar cell doubles efficiency  

Science Journals Connector (OSTI)

Conjugated polymers are promising materials for the production of inexpensive and flexible photovoltaic cells. Organic materials display tunable optical absorption within a large spectral range. This enables the construction of organic tandem photovoltaic cells. The authors here demonstrate a reflective tandem cell where single cells are reflecting the nonabsorbed light upon another adjacent cell. By folding two planar but spectrally different cells toward each other spectral broadening and light trapping are combined to give an enhancement of power conversion efficiency of a factor of 1.8 ± 0.3 .

Kristofer Tvingstedt; Viktor Andersson; Fengling Zhang; Olle Inganäs

2007-01-01T23:59:59.000Z

217

Interfacial Widths of Conjugated Polymer Bilayers  

SciTech Connect

The interfaces of conjugated polyelectrolyte (CPE)/poly[2-methoxy-5-(2{prime}-ethylhexyloxy)-p-phenylene vinylene] (MEH-PPV) bilayers cast from differential solvents are shown by resonant soft X-ray reflectivity (RSoXR) to be very smooth and sharp. The chemical interdiffusion due to casting is limited to less than 0.6 nm, and the interface created is thus nearly 'molecularly' sharp. These results demonstrate for the first time and with high precision that the nonpolar MEH-PPV layer is not much disturbed by casting the CPE layer from a polar solvent. A baseline is established for understanding the role of interfacial structure in determining the performance of CPE-based polymer light-emitting diodes. More broadly, we anticipate further applications of RSoXR as an important tool in achieving a deeper understanding of other multilayer organic optoelectronic devices, including multilayer photovoltaic devices.

NCSU; UC Berkeley; UCSB; Advanced Light Source; Garcia, Andres; Yan, Hongping; Sohn, Karen E.; Hexemer, Alexander; Nguyen, Thuc-Quyen; Bazan, Guillermo C.; Kramer, Edward J.; Ade, Harald

2009-08-13T23:59:59.000Z

218

Materials from Renewable Resources Most synthetic organic materials and polymers  

E-Print Network (OSTI)

.sukumaran@che Conceptualize ecofriendly chemicals, solvents, surfactants, and liquid solutions for chemical and industrial processeschemical and industrial processes Play a pivotal role in benign ways of producing chemicals and solvents research partners Create a sustainable economy using green chemistry Impressum Herausgeber: Universität

Schubart, Christoph

219

Functional Polymer Architectures for Solution Processed Organic Light Emitting Diodes  

E-Print Network (OSTI)

through formation of the tetrazole from 4-bromobenzonitrile13 5-(4-Bromophenyl)tetrazole, 7 2-(4-tert- Butylphenyl)-5-(

Poulsen, Daniel Andrew

2010-01-01T23:59:59.000Z

220

New N-Type Polymers for Organic Photovoltaics: Cooperative Research...  

Office of Scientific and Technical Information (OSTI)

by Pat Corkery, NREL 16560, photo by Dennis Schroeder, NREL 17613, photo by Dean Armstrong, NREL 17436, photo by Pat Corkery, NREL 17721. NREL prints on paper that contains...

Note: This page contains sample records for the topic "organic polymers show" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


221

Structure-Function Relationships in Semiconducting Polymers for Organic Photovoltaics  

E-Print Network (OSTI)

power conversion efficiency (PCE = ?) of the solar cell ischarge extraction and PCE. For a zero order approximation,seen success in OPVs with PCE between 5-7.4%. 5,22,23 Figure

Kavulak, David Fredric Joel

2010-01-01T23:59:59.000Z

222

Structure-Function Relationships in Semiconducting Polymers for Organic Photovoltaics  

E-Print Network (OSTI)

Photovoltaic Cell .the materials, all photovoltaic cells operate on the basicEquation 1.2) For photovoltaic cells of all kinds and from

Kavulak, David Fredric Joel

2010-01-01T23:59:59.000Z

223

Functional Polymer Architectures for Solution Processed Organic Light Emitting Diodes  

E-Print Network (OSTI)

for high energy blue phosphorescent materials. Therefore,this high triplet energy block copolymer as host material, afind materials with sufficiently high triplet energy to be

Poulsen, Daniel Andrew

2010-01-01T23:59:59.000Z

224

Multi-Walled Carbon Nanotubes-Modified Polymer Organic Photovoltaics.  

E-Print Network (OSTI)

??Since the carbon nanotubes were first discovered by Iijima in 1991, CNTs have been the focus of intense research by many groups. Nearly 7000 papers… (more)

Chen, Tzu-Fan

2009-01-01T23:59:59.000Z

225

Gain properties of dye-doped polymer thin films  

E-Print Network (OSTI)

The demonstration of an electrically pumped organic laser remains a major issue of organic optoelectronics for several decades. Nowadays, hybrid pumping seems a promising compromise where the organic material is optically pumped by an electrically pumped inorganic device on chip. This technical solution requires therefore an optimization of the organic gain medium under optical pumping. Here, we report a detailed study of gain features of dye-doped polymer thin films, in particular we introduce the gain efficiency $K$, in order to facilitate comparison between material and experimental conditions. First, we measure the bulk gain by the means of a pump-probe setup, and then present in details several factors which modify the actual gain of the layer, namely the confinement factor, the pump polarization, the molecular anisotropy, and the re-absorption. The usual model to evaluate the gain leads to an overestimation by more than one order of magnitude, which stresses the importance to design the devices accordin...

Gozhyk, I; Rabbani, H; Djellali, N; Forget, S; Chenais, S; Ulysse, C; Brosseau, A; Gauvin, S; Zyss, J; Lebental, M

2014-01-01T23:59:59.000Z

226

Sudden, "Step" Electron Capture by Conjugated Polymers  

NLE Websites -- All DOE Office Websites (Extended Search)

Sudden, "Step" Electron Capture by Conjugated Polymers Sudden, "Step" Electron Capture by Conjugated Polymers Andrew R. Cook, Paiboon Sreearunothai, Sadayuki Asaoka and John R. Miller J. Phys. Chem. A 115, 11615-11623 (2011). [Find paper at ACS Publications] Abstract: Data showing significant time-resolution-limited "step" capture of electrons following radiolysis by 7 - 10 ps electron pulses in a series of different length and different concentration conjugated polyfluorene polymers in tetrahydrofuran (THF) are presented. At the highest concentration, ~48 mM in repeat units for lengths from 20 to 133 fluorenes, ~30% of the electrons formed during pulse radiolysis were captured in the step, with a constant efficiency per repeat unit. Step capture per repeat unit (q = 6.9 M-1) is 60% of the presolvated electron capture efficiency

227

Use of radiation-induced polymers as friction reducing agents  

SciTech Connect

Drag reduction of fluids containing a water phase, e.g. hydrocarbon-in-water mixture, flowing through a conduit, is reduced by incorporating within the water phase a polymer obtained by radiation-induced polymerization of acrylamide, methacrylamide, acrylic acid, methacrylic acid, alkali metal salts thereof, or mixtures thereof. The polymerization is preferably carried out in 10-60% aqueous monomer solution with gamma radiation. The mixture of monomers, before radiation, preferably contains 25-99% acrylamide and 75-1% sodium acrylate. The polymer preferably shows viscoelastic effects at high concentrations in a solvent. Concentrations of about 1-10,000 ppm of the polymer in the water phase is desired. Examples of fluids useful with this invention include hydrocarbon-in-water and water -in-hydrocarbon slurries, the hydrocarbon is preferably comminuted oil shale or coal, congealed particles of crude oil and/or wax, viscous crude oil, etc.

Gogarty, W.B.; Knight, B.L.; Rhudy, J.S.

1980-12-02T23:59:59.000Z

228

Heat transport by laminar boundary layer flow with polymers  

E-Print Network (OSTI)

Motivated by recent experimental observations, we consider a steady-state Prandtl-Blasius boundary layer flow with polymers above a slightly heated horizontal plate and study how the heat transport might be affected by the polymers. We discuss how a set of equations can be derived for the problem and how these equations can be solved numerically by an iterative scheme. By carrying out such a scheme, we find that the effect of the polymers is equivalent to producing a space-dependent effective viscosity that first increases from the zero-shear value at the plate then decreases rapidly back to the zero-shear value far from the plate. We further show that such an effective viscosity leads to an enhancement in the drag, which in turn leads to a reduction in heat transport.

Roberto Benzi; Emily S. C. Ching.; Vivien W. S. Chu

2011-04-23T23:59:59.000Z

229

Organic Solar Cells: Absolute Measurement of Domain Composition and  

NLE Websites -- All DOE Office Websites (Extended Search)

Organic Solar Cells: Absolute Organic Solar Cells: Absolute Measurement of Domain Composition and Nanoscale Size Distribution Explains Performance in Solar Cells Organic Solar Cells: Absolute Measurement of Domain Composition and Nanoscale Size Distribution Explains Performance in Solar Cells Print Tuesday, 22 January 2013 00:00 This front cover represents the morphology and resulting device dynamics in organic solar cell blend films of PTB7 and PC71BM, as revealed by combined resonant x-ray scattering and microscopy done at the Advanced Light Source. Harald Ade and co-workers find that the fullerene molecules (red) are miscible in the polymer (blue) up to 30 wt.%, above which they begin to agglomerate (bottom). This agglomeration is important for the optoelectronic processes within the device, but the agglomerates must be kept to small sizes by the solvent processing additive diiodooctane (DIO). Correlation of this morphology with the spectrally resolved quantum efficiency shows that the yellow excitons created upon photoabsorption must arrive at the agglomerate interface for charge separation to occur. The blue electrons and green holes can then percolate through appropriate molecules in the mixed matrix to the electrodes for harvesting of electrical energy. Article Link (PDF)

230

Effects of electrode compression on the performance of a solid polymer electrolyte fuel cell  

E-Print Network (OSTI)

The effects of electrode compression on the performance of a polymer electrolyte fuel cell (PEFC) were investigated. Preliminary testing showed that considerable compression of the carbon cloth electrodes was provided by the PEFC structure. Further...

Del Campo, Christopher Scott

2012-06-07T23:59:59.000Z

231

Small Angle Neutron Scattering Studies of Polymer Dimensions in Binary Blends  

Science Journals Connector (OSTI)

Most polymer pairs are incompatible, or at best partially compatible over limited ranges of temperature and concentration. A number of systems showing lower or upper critical solution temperatures have been studi...

J. S. Higgins

1982-01-01T23:59:59.000Z

232

Bandwidth Studies on a 1.4 m Long Multimode Polymer Spiral Waveguide  

E-Print Network (OSTI)

to electromagnetic interference and compactness. Polymer multimode waveguides are potential candidates for use in on-board optical interconnections owing to favourable material properties which show low optical losses even at the high temperatures (> 250 °C...

Chen, Jian; Bamiedakis, Nikos; Penty, Richard V.; White, Ian H.

2014-07-03T23:59:59.000Z

233

Conductive Polymer Binder-Enabled Cycling of Pure Tin Nanoparticle  

NLE Websites -- All DOE Office Websites (Extended Search)

Conductive Polymer Binder-Enabled Cycling of Pure Tin Nanoparticle Conductive Polymer Binder-Enabled Cycling of Pure Tin Nanoparticle Composite Anode Electrodes for a Lithium-Ion Battery Title Conductive Polymer Binder-Enabled Cycling of Pure Tin Nanoparticle Composite Anode Electrodes for a Lithium-Ion Battery Publication Type Journal Article Year of Publication 2013 Authors Xun, Shidi, Xiangyun Song, Vincent S. Battaglia, and Gao Liu Journal Journal of the Electrochemical Society Volume 160 Start Page A849 Issue 6 Pagination A849 - A855 Date Published 01/2013 ISSN 0013-4651 Abstract Pure tin (Sn) nanoparticles can be cycled in stable and high gravimetric capacity (>500 mAh/g) with a polyfluorene-type conductive polymer binder in composite electrodes. Crystalline Sn nanoparticles (<150 nanometers, nm) were used as anode materials in this study. The average diameter of Sn secondary particles is 270 nm, calculated based on BET surface area. The composite electrodes contain a conductive polymer binder that constitutes 2% to 10% of the material, without any conductive additives (e.g., acetylene black). The electrode containing the 5% conductive binder showed the best cycling performance, with a reversible capacity of 510 mAh/g. Crystallinity of Sn particles gradually degrades during cycling, and pulverization of particles was observed after long-term cycling, leading to the capacity fade. The conductive polymer binder shows advantages over other conventional binders, such as Poly(vinylidene difluoride) (PVDF) and carboxymethylcellulose (CMC) binders, because it can provide electrical conductivity and strong adhesion during Sn volume change.

234

Selective separation of Eu{sup 3+} using polymer-enhanced ultrafiltration  

SciTech Connect

A process to selectively remove {sup 241}Am from liquid radioactive waste was investigated as an actinide separation method applicable to Hanford and other waste sites. The experimental procedures involved removal of Eu, a nonradioactive surrogate for Am, from aqueous solutions at pH 5 using organic polymers in conjunction with ultrafiltration. Commercially available polyacrylic acid (60,000 MW) and Pacific Northwest Laboratory`s (PNL) synthesized E3 copolymer ({approximately}10,000 MW) were tested. Test solutions containing 10 {mu}g/mL of Eu were dosed vath each polymer at various concentrations in order to bind Eu (i.e., by complexation and/or cation exchange) for subsequent rejection by an ultrafiltration coupon. Test solutions were filtered with and without polymer to determine if enhanced Eu separation could be achieved from polymer treatment. Both polymers significantly increased Eu removal. Optimum concentrations were 20 {mu}g/mL of polyacrylic acid and 100 {mu}g/mL of E3 for 100% Eu rejection by the Amicon PM10 membrane at 55 psi. In addition to enhancement of removal, the polymers selectively bound Eu over Na, suggesting that selective separation of Eu was possible. This suggests that polymer-enhanced ultrafiltration is a potential process for separation of {sup 241}Am from Hanford tank waste, further investigation of binding agents and membranes effective under very alkaline and high ionic strength is warranted. This process also has potential applications for selective separation of toxic metals from industrial process streams.

Norton, M.V.

1994-03-01T23:59:59.000Z

235

Process for hardening the surface of polymers  

DOE Patents (OSTI)

Hard surfaced polymers and the method for making them is generally described. Polymers are subjected to simultaneous multiple ion beam bombardment, that results in a hardening of the surface and improved wear resistance. 1 figure.

Mansur, L.K.; Lee, E.H.

1992-07-14T23:59:59.000Z

236

Mechanics of Polymer?Clay Nanocomposites  

Science Journals Connector (OSTI)

The mechanics of nanocomposites is critical in the design of nanomaterials with desirable properties. In this paper, the mechanics of polymer?clay nanocomposites is studied using a designed polymer and solution nanocomposite synthesis. A copolymer latex, ...

YuanQiao Rao; John M. Pochan

2006-12-16T23:59:59.000Z

237

Process to produce lithium-polymer batteries  

DOE Patents (OSTI)

A polymer bonded sheet product is described suitable for use as an electrode in a non-aqueous battery system. A porous electrode sheet is impregnated with a solid polymer electrolyte, so as to diffuse into the pores of the electrode. The composite is allowed to cool, and the electrolyte is entrapped in the porous electrode. The sheet products composed have the solid polymer electrolyte composition diffused into the active electrode material by melt-application of the solid polymer electrolyte composition into the porous electrode material sheet. The solid polymer electrolyte is maintained at a temperature that allows for rapid diffusion into the pores of the electrode. The composite electrolyte-electrode sheets are formed on current collectors and can be coated with solid polymer electrolyte prior to battery assembly. The interface between the solid polymer electrolyte composite electrodes and the solid polymer electrolyte coating has low resistance. 1 fig.

MacFadden, K.O.

1998-06-30T23:59:59.000Z

238

Transports of Polymer Nanomedicine in the Environment  

E-Print Network (OSTI)

With increasing production and commercial use of polymer nanomedicine and a lack of regulation to govern their disposal, polymer nanomedicine may enter into soils and ultimately into ground water system. In this dissertation, adsorption of polymeric...

Zhang, Ming

2013-11-14T23:59:59.000Z

239

Gas Separation Using Organic-Vapor-Resistent Membranes In Conjunctin With Organic-Vapor-Selective Membranes  

DOE Patents (OSTI)

A process for treating a gas mixture containing at least an organic compound gas or vapor and a second gas, such as natural gas, refinery off-gas or air. The process uses two sequential membrane separation steps, one using membrane selective for the organic compound over the second gas, the other selective for the second gas over the organic vapor. The second-gas-selective membranes use a selective layer made from a polymer having repeating units of a fluorinated polymer, and demonstrate good resistance to plasticization by the organic components in the gas mixture under treatment, and good recovery after exposure to liquid aromatic hydrocarbons. The membrane steps can be combined in either order.

Baker, Richard W. (Palo Alto, CA); Pinnau, Ingo (Palo Alto, CA); He, Zhenjie (Fremont, CA); Da Costa, Andre R. (Menlo Park, CA); Daniels, Ramin (San Jose, CA); Amo, Karl D. (Mountain View, CA); Wijmans, Johannes G. (Menlo Park, CA)

2003-06-03T23:59:59.000Z

240

MHK Technologies/WaveBlanket PolymerMembrane | Open Energy Information  

Open Energy Info (EERE)

WaveBlanket PolymerMembrane WaveBlanket PolymerMembrane < MHK Technologies Jump to: navigation, search << Return to the MHK database homepage WaveBlanket PolymerMembrane.jpg Technology Profile Primary Organization Wind Waves and Sun Technology Resource Click here Wave Technology Type Click here Oscillating Wave Surge Converter Technology Readiness Level Click here TRL 1 3 Discovery Concept Def Early Stage Dev Design Engineering Technology Description WaveBlanket could be called the accordion of the sea Poetically speaking It is simply a bellows played upon by the swells of the ocean WaveBlanket is a flexible polymer membrane which uses air pressure rather than steel to achieve its lateral strength and as a result produces about 1000 times more energy per unit of mass than rigid green energy designs

Note: This page contains sample records for the topic "organic polymers show" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


241

Thermally stable hyperbranched polyether-based polymer electrolyte for lithium-ion batteries  

Science Journals Connector (OSTI)

A thermally stable polymer matrix, comprising hyperbranched polyether PHEMO (poly(3-{2-[2-(2-hydroxyethoxy) ethoxy] ethoxy}methyl-3'-methyloxetane)) and PVDF-HFP (poly(vinylidene fluoride-hexafluoropropylene)), has been successfully prepared for applications in lithium-ion batteries. This type of polymer electrolyte has been made by adding different amounts of lithium bis(oxalate)borate (LiBOB) to the polymer matrix. Its thermal and structural properties were measured using differential scanning calorimetry and x-ray diffraction. Experimental results show that the polymer electrolyte system possesses good thermal stability, with a decomposition temperature above 420?°C. The ionic conductivity of the polymer electrolyte system is dependent on the lithium salt content, reaching a maximum of 1.1 ? 10?5?S?cm?1 at 30?°C and 2.3 ? 10?4?S?cm?1 at 80?°C when doped with 10?wt% LiBOB.

Feng Wu; Ting Feng; Chuan Wu; Ying Bai; Lin Ye; Junzheng Chen

2010-01-01T23:59:59.000Z

242

“Coffee-ring” patterns of polymer droplets  

Science Journals Connector (OSTI)

Dried droplets of polymer solutions carries the self-assembly behavior of polymer molecules by forming various patterns. Pattern formation is a consequence of deposition of molecules depending on motion of the contact line during the drying process. The contact line motion depends on initial polymer concentrations and hence entanglement. Thus depending on entanglement the patterns represent the ‘particle’ like or ‘collective’ behavior of polymer molecules.

Nupur Biswas; Alokmay Datta

2013-01-01T23:59:59.000Z

243

Post polymerization cure shape memory polymers  

DOE Patents (OSTI)

This invention relates to chemical polymer compositions, methods of synthesis, and fabrication methods for devices regarding polymers capable of displaying shape memory behavior (SMPs) and which can first be polymerized to a linear or branched polymeric structure, having thermoplastic properties, subsequently processed into a device through processes typical of polymer melts, solutions, and dispersions and then crossed linked to a shape memory thermoset polymer retaining the processed shape.

Wilson, Thomas S; Hearon, Michael Keith; Bearinger, Jane P

2014-11-11T23:59:59.000Z

244

Polymer combustion: effects of flame emissivity  

Science Journals Connector (OSTI)

...gas phase. Polymer combustion chemistry is modelled...investigating polymer combustion it has proven advantageous...properties and treat the heat flux from the ignition...luminous flames from hydrocarbon fuels, it is common...A (1999) Polymer combustion: effects of flame emissivity...

1999-01-01T23:59:59.000Z

245

Organosiloxane-grafted natural polymer coatings  

DOE Patents (OSTI)

A new family of polysaccharide graft polymers are provided as corrosion resistant coatings having antimicrobial properties which are useful on light metals such as aluminum, magnesium, zinc, steel and their alloys. Methods of making the polysaccharide graft polymers are also included. The methods of making the polysaccharide graft polymers involve reacting a polysaccharide source with an antimicrobial agent under conditions of hydrolysis-condensation.

Sugama, Toshifumi (Wading River, NY)

1998-01-01T23:59:59.000Z

246

Transport characteristics across drum filter vents and polymer bags  

SciTech Connect

The rate at which hydrogen (H {sub 2}) or a volatile organic compound (VOC) exits a layer of confinement in a vented waste drum is proportional to the concentration difference across the layer. The proportionality constant is the gas transport characteristic. A series of transport experiments were conducted to determine H{sub 2} and VOC transport characteristics across different drum filter vents and polymer bags. This report reviews the methods and results of past investigators in defining transport characteristics across filter vents and polymer bags, describes the apparatus and procedures used in these experiments, compares the reported and estimated transport characteristics with earlier results, and discusses the impact of changing the transport characteristic values used in model calculations.

Liekhus, K.J.

1994-08-01T23:59:59.000Z

247

Bimolecular Crystals of Fullerenes in Conjugated Polymers and the  

NLE Websites -- All DOE Office Websites (Extended Search)

Bimolecular Crystals of Fullerenes in Conjugated Polymers and the Bimolecular Crystals of Fullerenes in Conjugated Polymers and the Implications of Molecular Mixing for Solar Cells figure 1 Figure 1: Diffraction data for pBTTT:PC[71]BM blends of varying weight ratio that have been annealed at 185 °C for 10 minutes. The annealing took place at the glass transition temperature of pBTTT in order to increase the molecular order. (a) 2D GIXS of pure pBTTT. (b) 2D GIXS of 1:1 pBTTT:PC[71]BM blend. (c) High resolution specular x-ray diffraction for a series of pBTTT:PC[71]BM blends. This confirms the expansion perpendicular to the substrate. Organic photovoltaics have recently attracted tremendous attention in industry and academia since they offer the potential to significantly change energy production by drastically reducing the manufacturing cost for

248

Author's personal copy Pyroelectric energy converter using co-polymer P(VDF-TrFE) and Olsen cycle  

E-Print Network (OSTI)

into electricity by means of an electrical generator or dynamo. Alternatively, organic Rankine cycles use organicAuthor's personal copy Pyroelectric energy converter using co-polymer P(VDF-TrFE) and Olsen cycle heat harvesting Ferroelectric Olsen cycle a b s t r a c t This study was concerned with designing

Pilon, Laurent

249

Wyoming chemical flood test for oil recovery shows promise  

SciTech Connect

This project was begun in 1978 to provide data to promote surfactant chemical flooding on a commercial scale in the low-permeability reservoirs of eastern Wyoming and Colorado. The Big Muddy Field in Wyoming was selected because of the large resource, potential net pay, and high oil saturation. Injection began on February 20, 1980 with a surfactant flooding process. Water mixed with salt (brine) was injected as a preflush which was completed on January 20, 1981. This produced 12,122 bbl of oil. The next step involves injecting a surfactant, co-surfactant (alcohol), and polymer. When the injection of the surfactant is completed in the summer of 1982, polymer alone will be injected. Polymer injection will be completed sometime in 1984. The final phase will be a followup water drive scheduled for 1984-1987. As of February 1, 1982, 36,683 bbl of oil had been produced. About 88 bbl of oil per day is being produced, compared to only about 41 bbl per day in February 1981. (ATT)

Not Available

1981-01-01T23:59:59.000Z

250

Probing Organic Transistors with Infrared Beams  

NLE Websites -- All DOE Office Websites (Extended Search)

Probing Organic Transistors with Infrared Beams Print Probing Organic Transistors with Infrared Beams Print Silicon-based transistors are well-understood, basic components of contemporary electronic technology. In contrast, there is growing need for the development of electronic devices based on organic polymer materials. Organic field-effect transistors (FETs) are ideal for special applications that require large areas, light weight, and structural flexibility. They also have the advantage of being easy to mass-produce at very low cost. However, even though this class of devices is finding a growing number of applications, electronic processes in organic materials are still not well understood. A group of researchers from the University of California and the ALS has succeeded in probing the intrinsic electronic properties of the charge carriers in organic FETs using infrared spectromicroscopy. The results of their study could help in the future development of sensors, large-area displays, and other plastic electronic components.

251

5th International Conference on Polymer Batteries and Fuel Cells - PBFC-5 -  

NLE Websites -- All DOE Office Websites (Extended Search)

Home Home Conference Goals Organizers Sponsors Speakers Program Posters Registration Hotels Breakfast/Dinner Options Maps and Transportation to Argonne Bus Schedule Contact Us Chicago skyline Battery research Argonne APS 5th INTERNATIONAL CONFERENCE ON POLYMER BATTERIES AND FUEL CELLS (PBFC-5) PBFC 2011 August 1 - 5, 2011 Advanced Photon Source, Argonne National Laboratory Argonne, Illinois USA About the Conference It is a great pleasure for the organizing committee of the 5th International Conference on Polymer Batteries and Fuel Cells (PBFC-5, PBFC-2011) to invite all who are interested in materials for and systems based on lithium polymer, lithium-ion, metal-air, and flow batteries, and proton-exchange membrane and alkaline-exchange membrane fuel cells to attend PBFC-5. Read more.

252

Selective sorption of PCBs by low-cost polymers and application to soil washing processes  

SciTech Connect

Surfactant-assisted soil washing and soil flushing processes have shown to be a promising soil decontamination method. In these and other remediation technologies that employ surfactants to mobilize organic contaminants, large volumes of contaminated aqueous solutions are generated. An efficient process to selectively concentrate the organic contaminant from the aqueous surfactant solution, thereby allowing the recycle of the surfactant, is considered essential for cost-effective application of these remediation methods. To this end, a process was developed wherein commercial, low-cost polymers are used to selectively sorb PCBs and petroleum oils from aqueous surfactant solutions. Sorption isotherms and sorption rates were determined for a large number of polymer sorbents and several significant structure-property relationships were observed. Two classes of polymers, polyester elastomers and carbon-filled elastomer rubbers (e.g., recycled rubber tire), were found to perform superiorly in this application and a successful pilot-scale demonstration of the process was conducted.

Sivavec, T.M.; Webb, J.L.; Gascoyne, D.G. [GE Corporate Research and Development, Schenectady, NY (United States)

1996-10-01T23:59:59.000Z

253

Enhanced photophysics of conjugated polymers  

DOE Patents (OSTI)

A particulate fluorescent conjugated polymer surfactant complex and method of making and using same. The particles are between about 15 and about 50 nm and when formed from a lipsome surfactant have a charge density similar to DNA and are strongly absorbed by cancer cells.

Chen, Liaohai (Darien, IL)

2007-06-12T23:59:59.000Z

254

POLYMER FEEDSTOCK MADE FROM BIOMASS  

Science Journals Connector (OSTI)

Method effectively converts fructose to 5-hydroxymethylfurfural ... Researchers at the University of Wisconsin, Madison, have developed a selective method for converting fructose to 5-hydroxymethylfurfural (HMF), a compound that could serve as a key intermediate for manufacturing polymers, pharmaceuticals, and other valuable products ( Science 2006, 312 , 1933). ...

2006-07-03T23:59:59.000Z

255

Photoconductivity measurements of the electronic structure of organic solar cells  

Science Journals Connector (OSTI)

Experimental and theoretical studies of the electronic structure of bulk heterojunction (BHJ) organic solar cells are reported. The photoconductivity spectral response of the solar cells has a weak absorption band extending from the band-gap energy down to <1 eV due to charge-transfer optical excitation at the interface between the polymer and the fullerene. The low-energy absorption indicates an exponential band tail of localized states and an absorption model based on the one-electron joint density of electronic states accounts for the data. Transient photoconductivity measurements of the carrier mobility exhibit a temperature-dependent carrier dispersion. Data analysis for the particular case of transport in the BHJ structure is developed. A multiple trapping model of the dispersive transport is consistent with localized band tail states having a comparable density-of-states distribution to those observed by optical absorption. Theoretical calculations of the density of states including disorder in the ?-? spacing of the polymer chains also shows exponential band tailing. A density-of-states model is developed from the data and is discussed.

R. A. Street; K. W. Song; J. E. Northrup; S. Cowan

2011-04-25T23:59:59.000Z

256

Organic Photovoltaics  

Science Journals Connector (OSTI)

Satisfying the world's growing demand for energy is an urgent societal challenge. Organic photovoltaics holds promise as a cost-efficient and environmentally friendly solution.

Kippelen, Bernard

2007-01-01T23:59:59.000Z

257

17 - Organic solar cells (OSCs)  

Science Journals Connector (OSTI)

Abstract The organic solar cell (OSC) is the only solar cell technology that fully addresses the challenges of manufacturing on a scale corresponding to an energy production capacity of 1 \\{GWpeak\\} per day based solely on abundant elements. This ability arises through the use of printing techniques and photoactive layers comprising carbon-based conjugated polymer materials. The technology is briefly reviewed in this chapter by describing the common device structures and materials. The second half of the chapter gives an overview on suitable roll-to-roll (R2R) processing techniques for the fabrication of OSCs. Finally some demonstration projects and future trends are illustrated.

M. Hösel; D. Angmo; F.C. Krebs

2013-01-01T23:59:59.000Z

258

Oxidative and initiated chemical vapor deposition for application to organic electronics  

E-Print Network (OSTI)

Since the first discovery of polymeric conductors in 1977, the research area of "organic electronics" has grown dramatically. However, methods for forming thin films comprised solely of conductive polymers are limited by ...

Im, Sung Gap

2009-01-01T23:59:59.000Z

259

For Stimul-Responsive Polymers with Enhanced Efficiency in Reservoir Recovery Processes  

SciTech Connect

Acrylamide-based hydrophobically modified (HM) polybetaines containing N-butylphenylacrylamide (BPAM) and varying amounts of either sulfobetaine (3-(2-acrylamido-2-methylpropanedimethylammonio)-1-propanesulfonate, AMPDAPS) or carboxybetaine (4-(2-acrylamido-2-methylpropyldimethylammonio) butanoate, AMPDAB) comonomers were synthesized via micellar copolymerization. The terpolymers were characterized via {sup 13}C NMR and UV spectroscopies, classical and dynamic light scattering, and potentiometric titration. The response of aqueous polymer solutions to various external stimuli, including changes in solution pH, electrolyte concentration, and the addition of small molecule surfactants, was investigated using surface tension and rheological measurements. Low charge density terpolymers were found to show greater viscosity enhancement upon the addition of surfactant compared to the high charge density terpolymers. The addition of sodium dodecyl sulfate (SDS) produced the largest maximum in solution viscosity, while N-dodecyl-N,N,N-trimethylammonium bromide (DTAB), N-dodecyl-N,N-dimethylammonio-1-propanesulfonate (SB3-12), and Triton X-100 tended to show reduced viscosity enhancement. In most cases, the high charge density carboxybetaine terpolymer exhibited diminished solution viscosities upon surfactant addition. In our last report, we discussed solution thermodynamic theory that described changes in polymer coil conformation as a function of solution temperature and polymer molecular weight. These polymers contained no ionic charges. In this report, we expand polymer solution theory to account for the electrostatic interactions present in solutions of charged polymers. Polymers with ionic charges are referred to as polyions or polyelectrolytes.

Charles McCormick; Roger Hester

2003-02-28T23:59:59.000Z

260

FOR STIMULI-RESPONSIVE POLYMERS WITH ENHANCED EFFICIENCY IN RESERVOIR RECOVERY PROCESSES  

SciTech Connect

To date, our synthetic research efforts have been focused on the development of stimuli-responsive water-soluble polymers designed for use in enhanced oil recovery (EOR) applications. These model systems are structurally tailored for potential application as viscosifiers and/or mobility control agents for secondary and tertiary EOR methods. The following report discloses the progress of our ongoing research of polyzwitterions, polymers derived from monomers bearing both positive and negative charges, that show the ability to sustain or increase their hydrodynamic volume (and thus, solution viscosity) in the presence of electrolytes. Such polymers appear to be well-suited for use under conditions similar to those encountered in EOR operations. Additionally, we disclose the synthesis and characterization of a well-defined set of polyacrylamide (PAM) homopolymers that vary by MW. The MW of the PAM samples is controlled by addition of sodium formate to the polymerization medium as a conventional chain transfer agent. Data derived from polymer characterization is used to determine the kinetic parameter C{sub CT}, the chain transfer constant to sodium formate under the given polymerization conditions. The PAM homopolymer series will be employed in future set of experiments designed to test a simplified intrinsic viscosity equation. The flow resistance of a polymer solution through a porous medium is controlled by the polymer's hydrodynamic volume, which is strongly related to it's intrinsic viscosity. However, the hydrodynamic volume of a polymer molecule in an aqueous solution varies with fluid temperature, solvent composition, and polymer structure. This report on the theory of polymer solubility accentuates the importance of developing polymer solutions that increase in intrinsic viscosity when fluid temperatures are elevated above room conditions. The intrinsic viscosity response to temperature and molecular weight variations of three polymer solutions verified the modeling capability of a simplified intrinsic viscosity equation. These results imply that the simplified intrinsic viscosity equation is adequate in modeling polymer coil size response to solvent composition, temperature and polymer molecular weight. The equation can be used to direct efforts to produce superior polymers for mobility control during flooding of reservoirs at elevated temperatures.

Charles McCormick; Roger Hester

2002-04-29T23:59:59.000Z

Note: This page contains sample records for the topic "organic polymers show" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

Analytical theory of polymer-network-mediated interaction between colloidal particles  

Science Journals Connector (OSTI)

...organic-inorganic hybrid solar cells. Further...for renewable energy production. For...unclear, a major obstacle to its understanding...materials and energy (e.g., super-rigid...rubbers, composite solar cells, etc...applications, and energy-related materials. 1 Heinrich...nanorod-polymer solar cells . Science...

Lorenzo Di Michele; Alessio Zaccone; Erika Eiser

2012-01-01T23:59:59.000Z

262

Aromatic carboxylate effect on dimensionality of three bis(benzimidazole)-based cobalt(II) coordination polymers: Syntheses, structures and properties  

SciTech Connect

Three new metal-organic coordination polymers [Co(4-bbc){sub 2}(bbbm)] (1), [Co(3,5-pdc)(bbbm)]·2H{sub 2}O (2) and [Co(1,4-ndc)(bbbm)] (3) (4-Hbbc=4-bromobenzoic acid, 3,5-H{sub 2}pdc=3,5-pyridinedicarboxylic acid, 1,4-H{sub 2}ndc=1,4-naphthalenedicarboxylic acid and bbbm=1,1-(1,4-butanediyl)bis-1H-benzimidazole) were hydrothermally synthesized and structurally characterized. Polymer 1 is a 1D chain formed by the bbbm ligands and Co{sup II} ions. Polymer 2 exhibits a 2D network with a (3·4·5)(3{sup 2}·4·5·6{sup 2}·7{sup 4}) topology. Polymer 3 possesses a 3D three-fold interpenetrating framework. The versatile structures of title polymers indicate that the aromatic carboxylates have an important influence on the dimensionality of 1–3. Moreover, the thermal stability, electrochemical and luminescent properties of 1–3 were investigated. - graphical abstract: Three bis(benzimidazole)-based cobalt(II) coordination polymers tuned by aromatic carboxylates were hydrothermally synthesized and structurally characterized. The aromatic carboxylates play a key role in the dimensionality of three polymers. The electrochemical and luminescent properties of three polymers were investigated. Display Omitted - Highlights: • Three bis(benzimidazole)-based cobalt(II) coordination polymers tuned by aromatic carboxylates were obtained. • The aromatic carboxylates have an important influence on the dimensionality of three polymers. • The electrochemical and luminescent properties of three polymers were investigated.

Zhang, Ju-Wen; Gong, Chun-Hua; Hou, Li-Li; Tian, Ai-Xiang; Wang, Xiu-Li, E-mail: wangxiuli@bhu.edu.cn

2013-09-15T23:59:59.000Z

263

Effects of cathode modification using spin-coated lithium acetate on the performances of polymer bulk-heterojunction solar cells  

Science Journals Connector (OSTI)

In this report we show that the performances of polymer bulk-heterojunction solar cells were improved by inserting thin films of lithium acetate layers between the active layer and the cathode using a spin-coating process. Comparing with the device without the cathode modification significant enhancements of Voc (open circuit voltage) from 0.42?V to 0.55?V and device efficiency from 1.4% to 4.1% were achieved. X-ray and ultraviolet photoelectron spectroscopic studies indicate that both the improved damage tolerance of the active layer under the thermally evaporated metal and an n-type doping at the metal/organic interface play the crucial roles in the enhanced performances.

Liang Jiang; Aiyuan Li; Shizhao Zheng; King-Young Wong

2013-01-01T23:59:59.000Z

264

Coupling the Alkaline-Surfactant-Polymer Technology and The Gelation Technology to Maximize Oil Production  

SciTech Connect

Gelation technologies have been developed to provide more efficient vertical sweep efficiencies for flooding naturally fractured oil reservoirs or more efficient areal sweep efficiency for those with high permeability contrast ''thief zones''. The field proven alkaline-surfactant-polymer technology economically recovers 15% to 25% OOIP more oil than waterflooding from swept pore space of an oil reservoir. However, alkaline-surfactant-polymer technology is not amenable to naturally fractured reservoirs or those with thief zones because much of injected solution bypasses target pore space containing oil. This work investigates whether combining these two technologies could broaden applicability of alkaline-surfactant-polymer flooding into these reservoirs. A prior fluid-fluid report discussed interaction of different gel chemical compositions and alkaline-surfactant-polymer solutions. Gel solutions under dynamic conditions of linear corefloods showed similar stability to alkaline-surfactant-polymer solutions as in the fluid-fluid analyses. Aluminum-polyacrylamide, flowing gels are not stable to alkaline-surfactant-polymer solutions of either pH 10.5 or 12.9. Chromium acetate-polyacrylamide flowing and rigid flowing gels are stable to subsequent alkaline-surfactant-polymer solution injection. Rigid flowing chromium acetate-polyacrylamide gels maintained permeability reduction better than flowing chromium acetate-polyacrylamide gels. Silicate-polyacrylamide gels are not stable with subsequent injection of either a pH 10.5 or a 12.9 alkaline-surfactant-polymer solution. Chromium acetate-xanthan gum rigid gels are not stable to subsequent alkaline-surfactant-polymer solution injection. Resorcinol-formaldehyde gels were stable to subsequent alkaline-surfactant-polymer solution injection. When evaluated in a dual core configuration, injected fluid flows into the core with the greatest effective permeability to the injected fluid. The same gel stability trends to subsequent alkaline-surfactant-polymer injected solution were observed. Aluminum citrate-polyacrylamide, resorcinol-formaldehyde, and the silicate-polyacrylamide gel systems did not produce significant incremental oil in linear corefloods. Both flowing and rigid flowing chromium acetate-polyacrylamide gels and the xanthan gum-chromium acetate gel system produced incremental oil with the rigid flowing gel producing the greatest amount. Higher oil recovery could have been due to higher differential pressures across cores. None of the gels tested appeared to alter alkaline-surfactant-polymer solution oil recovery. Total waterflood plus chemical flood oil recovery sequence recoveries were all similar. Chromium acetate-polyacrylamide gel used to seal fractured core maintain fracture closure if followed by an alkaline-surfactant-polymer solution. Chromium acetate gels that were stable to injection of alkaline-surfactant-polymer solutions at 72 F were stable to injection of alkaline-surfactant-polymer solutions at 125 F and 175 F in linear corefloods. Chromium acetate-polyacrylamide gels maintained diversion capability after injection of an alkaline-surfactant-polymer solution in stacked; radial coreflood with a common well bore. Xanthan gum-chromium acetate gels maintained gel integrity in linear corefloods after injection of an alkaline-surfactant-polymer solution at 125 F. At 175 F, Xanthan gum-chromium acetate gels were not stable either with or without subsequent alkaline-surfactant-polymer solution injection. Numerical simulation demonstrated that reducing the permeability of a high permeability zone of a reservoir with gel improved both waterflood and alkaline-surfactant-polymer flood oil recovery. A Minnelusa reservoir with both A and B sand production was simulated. A and B sands are separated by a shale layer. A sand and B sand waterflood oil recovery was improved by 196,000 bbls when a gel was placed in the B sand. A sand and B sand alkaline-surfactant-polymer flood oil recovery was improved by 596,000 bbls when a gel was placed in the B sand. Alkaline-surfactant-pol

Malcolm Pitts; Jie Qi; Dan Wilson; David Stewart; Bill Jones

2005-10-01T23:59:59.000Z

265

Organic geochemistry and organic petrography  

SciTech Connect

The Vermillion Creek coals and shales contain dominantly humic organic matter originating from woody plant tissues except for one shale unit above the coals, which contains hydrogen-rich kerogen that is mostly remains of filamentous algae, of likely lacustrine origin. The coals have two unusual features - very low inertinite content and high sulfur content compared to mined western coals. However, neither of these features points to the limnic setting reported for the Vermillion Creek sequence. The vitrinite reflectance of Vermillion Creek shales is markedly lower than that of the coals and is inversely proportional to the H/C ratio of the shales. Rock-Eval pyrolysis results, analyses of H, C, and N, petrographic observations, isotope composition of organic carbon, and amounts and compositions of the CHCl/sub 3/-extractable organic matter all suggest mixtures of two types of organic matter in the Vermillion Creek coals and clay shales: (1) isotopically heavy, hydrogen-deficient, terrestrial organic matter, as was found in the coals, and (2) isotopically light, hydrogen-rich organic matter similar to that found in one of the clay-shale samples. The different compositions of the Vermillion Creek coal, the unnamed Williams Fork Formation coals, and coals from the Middle Pennsylvanian Marmaton and Cherokee Groups are apparently caused by differences in original plant composition, alteration of organic matter related to different pH conditions of the peat swamps, and slightly different organic maturation levels.

Bostick, N.H.; Hatch, J.R.; Daws, T.A.; Love, A.H.; Lubeck, S.C.M.; Threlkeld, C.N.

1987-01-01T23:59:59.000Z

266

Physical properties of Li ion conducting polyphosphazene based polymer electrolytes  

SciTech Connect

We report a systematic study of the transport properties and the underlying physical chemistry of some polyphosphazene (PPhz)-based polymer electrolytes. We synthesized MEEP and variants which employed mixed combinations of different length oxyethylene side-chains. We compare the conductivity and ion-ion interactions in polymer electrolytes obtained with lithium triflate and lithium bis(trifluoromethanesulfonyl)imide (TFSI) salts added to the polymer. The combination of the lithium imide salt and MEEP yields a maximum conductivity of 8 x 10{sup -5} {Omega}{sup -1} cm{sup -1} at room temperature at a salt loading of 8 monomers per lithium. In one of the mixed side-chain variations, a maximum conductivity of 2 x 10{sup -4} {Omega}{sup -1} cm{sup -1} was measured at the same molar ratio. Raman spectral analysis shows some ion aggregation and some polymer - ion interactions in the PPhz-LiTFSI case but much less than observed with Li CF{sub 3}SO{sub 3}. A sharp increase in the Tg as salt is added corresponds to concentrations above which the conductivity significantly decreases and ion associations appear.

Sanderson, S.; Zawodzinski, T.; Hermes, R.; Davey, J.; Dai, Hongli

1996-12-31T23:59:59.000Z

267

On The Importance of Organic Oxygen for Understanding Organic Aerosol  

NLE Websites -- All DOE Office Websites (Extended Search)

On The Importance of Organic Oxygen for Understanding Organic Aerosol On The Importance of Organic Oxygen for Understanding Organic Aerosol Particles Title On The Importance of Organic Oxygen for Understanding Organic Aerosol Particles Publication Type Journal Article Year of Publication 2006 Authors Pang, Yanbo, B. J. Turpin, and Lara A. Gundel Journal Journal of Aerosol Science and Technology Volume 40 Start Page Chapter Pagination 128-133 Abstract This study shows how aerosol organic oxygen data could provide new and independent information about organic aerosol mass, aqueous solubility of organic aerosols, formation of secondary organic aerosol (SOA) and the relative contributions of anthropogenic and biogenic sources. For more than two decades atmospheric aerosol organic mass concentration has usually been estimated by multiplying the measured carbon content by an assumed organic mass (OM)-to-organic carbon (OC ) factor of 1.4. However, this factor can vary from 1.0 to 2.5 depending on location. This great uncertainty about aerosol organic mass limits our understanding of the influence of organic aerosol on climate, visibility and health.New examination of organic aerosol speciation data shows that the oxygen content is the key factor responsible for the observed range in the OM-to-OC factor. When organic oxygen content is excluded, the ratio of non-oxygen organic mass to carbon mass varies very little across different environments (1.12 to 1.14). The non-oxygen-OM-to-non-oxygen OC factor for all studied sites (urban and non-urban) is 1.13± 0.02. The uncertainty becomes an order of magnitude smaller than the uncertainty in the best current estimates of organic mass to organic carbon ratios (1.6± 0.2 for urban and 2.1± 0.2 for non-urban areas). When aerosol organic oxygen data become available, organic aerosol mass can be quite accurately estimated using just OC and organic oxygen (OO) without the need to know whether the aerosol is fresh or aged. In addition, aerosol organic oxygen data will aid prediction of water solubility since compounds with OO-to-OC higher than 0.4 have water solubilities higher than 1g per 100 g water

268

Electrically conductive polymer concrete coatings  

DOE Patents (OSTI)

A sprayable electrically conductive polymer concrete coating for vertical and overhead applications is described. The coating is permeable yet has low electrical resistivity (<10 ohm-cm), good bond strength to concrete substrates, and good weatherability. A preferred formulation contains about 60 wt% calcined coke breeze, 40 wt% vinyl ester resin with 3.5 wt% modified bentonite clay. Such formulations apply evenly and provide enough rigidity for vertical or overhead structures so there is no drip or sag. 4 tabs.

Fontana, J.J.; Elling, D.; Reams, W.

1988-05-26T23:59:59.000Z

269

Diamond turning of thermoplastic polymers  

SciTech Connect

Single point diamond turning studies were made using a series of thermoplastic polymers with different glass transition temperatures. Variations in surface morphology and surface roughness were observed as a function of cutting speed. Lower glass transition temperatures facilitate smoother surface cuts and better surface finish. This can be attributed to the frictional heating that occurs during machining. Because of the very low glass transition temperatures in polymeric compared to inorganic glasses, the precision machining response can be very speed sensitive.

Smith, E.; Scattergood, R.O.

1988-12-01T23:59:59.000Z

270

Electrically conductive polymer concrete coatings  

DOE Patents (OSTI)

A sprayable electrically conductive polymer concrete coating for vertical d overhead applications is described. The coating is permeable yet has low electrical resistivity (<10 ohm-cm), good bond strength to concrete substrates, and good weatherability. A preferred formulation contains about 60 wt % calcined coke breeze, 40 wt % vinyl ester with 3.5 wt % modified bentonite clay. Such formulations apply evenly and provide enough rigidity for vertical or overhead structures so there is no drip or sag.

Fontana, Jack J. (Shirley, NY); Elling, David (Centereach, NY); Reams, Walter (Shirley, NY)

1990-01-01T23:59:59.000Z

271

Electrochemical properties of Li ion polymer battery with gel polymer electrolyte based on polyurethane  

Science Journals Connector (OSTI)

Gel polymer electrolyte (GPE) was prepared using polyurethane acrylate as polymer host and its performance was evaluated. LiCoO2/GPE/graphite cells were prepared and their electrochemical performance as a functio...

H-S. Kim; G-Y. Choi; S-I. Moon; S-P. Kim

2003-06-01T23:59:59.000Z

272

Thermal Roughening and Deroughening at Polymer Interfaces in Electrophoretic Deposition  

E-Print Network (OSTI)

Thermal scaling and relaxation of the interface width in an electrophoretic deposition of polymer chains is examined by a three-dimensional Monte Carlo simulation on a discrete lattice. Variation of the equilibrium interface width $W_r$ with the temperature $T$ shows deroughening $W_r \\propto T^{-\\delta}$, with $\\delta \\sim 1/4$, at low temperatures and roughening $W_r \\propto T^{\

Frank W. Bentrem; Ras B. Pandey

2006-07-17T23:59:59.000Z

273

Tritium containing polymers having a polymer backbone substantially void of tritium  

DOE Patents (OSTI)

A radioluminescent light source comprises a solid mixture of a phosphorescent substance and a tritiated polymer. The solid mixture forms a solid mass having length, width, and thickness dimensions, and is capable of self-support. In one aspect of the invention, the phosphorescent substance comprises solid phosphor particles supported or surrounded within a solid matrix by a tritium containing polymer. The tritium containing polymer comprises a polymer backbone which is essentially void of tritium. 2 figs.

Jensen, G.A.; Nelson, D.A.; Molton, P.M.

1992-03-31T23:59:59.000Z

274

Structural Arrangements of Polymers Adsorbed at Nanostrings  

E-Print Network (OSTI)

We study ground states of a hybrid system consisting of a polymer and an attractive nanowire by means of computer simulations. Depending on structural and energetic properties of the substrate, we find different adsorbed polymer conformations, amongst which are spherical droplets attached to the wire and monolayer tubes surrounding it. We construct the complete conformational phase diagram and analyze in more detail particularly interesting polymer-tube conformations.

Thomas Vogel; Michael Bachmann

2011-03-09T23:59:59.000Z

275

Nanoscale molecularly imprinted polymers and method thereof  

DOE Patents (OSTI)

Nanoscale molecularly imprinted polymers (MIP) having polymer features wherein the size, shape and position are predetermined can be fabricated using an xy piezo stage mounted on an inverted microscope and a laser. Using an AMF controller, a solution containing polymer precursors and a photo initiator are positioned on the xy piezo and hit with a laser beam. The thickness of the polymeric features can be varied from a few nanometers to over a micron.

Hart, Bradley R. (Brentwood, CA); Talley, Chad E. (Brentwood, CA)

2008-06-10T23:59:59.000Z

276

Organosiloxane-grafted natural polymer coatings  

DOE Patents (OSTI)

A new family of polysaccharide graft polymers are provided as corrosion resistant coatings having antimicrobial properties which are useful on light metals such as aluminum, magnesium, zinc, steel and their alloys. Methods of making the polysaccharide graft polymers are also included. The methods of making the polysaccharide graft polymers involve reacting a polysaccharide source with an antimicrobial agent under conditions of hydrolysis-condensation. 17 figs.

Sugama, Toshifumi

1998-12-01T23:59:59.000Z

277

Structure, Dynamics, and Power Conversion Efficiency Correlations in a New Low Bandgap Polymer: PCBM Solar Cell  

Science Journals Connector (OSTI)

Since their discovery about 15 years ago, bulk heterojunction (BHJ) organic photovoltaic (OPV) devices made from semiconducting polymers have shown promise for future commercialization due to their low cost, ease of fabrication, and small environmental impact relative to silicon and heavy metal based semiconductor solar cells. ... (1-3) To achieve a high power conversion efficiency (PCE) in solar cells based on BHJ OPV materials, the semiconducting polymer composites must be efficient in light harvesting, exciton splitting, charge carrier generation, and transport. ... The white light continuum probe pulses were generated by focusing a few microjoules of the Ti:sapphire amplifier output onto a sapphire disk. ...

Jianchang Guo; Yongye Liang; Jodi Szarko; Byeongdu Lee; Hae Jung Son; Brian S. Rolczynski; Luping Yu; Lin X. Chen

2009-12-28T23:59:59.000Z

278

Polymer Electrolytes for Advanced Lithium Batteries | Department...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Advanced Lithium Batteries Polymer Electrolytes for Advanced Lithium Batteries 2009 DOE Hydrogen Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation...

279

ELECTROSPUN POLYMER-FIBER SOLAR CELL.  

E-Print Network (OSTI)

??A study of fabricating the first electrospun polymer-fiber solar cell with MEHPPV is presented. Motivation for the work and a brief history of solar cell… (more)

Nagata, Shinobu

2011-01-01T23:59:59.000Z

280

Graphene-based polymer waveguide polarizer  

Science Journals Connector (OSTI)

Planar-lightwave-circuit (PLC)-type graphene polarizers are fabricated by using a low loss optical polymer waveguide. The optical characteristics are investigated at a wavelength of...

Kim, Jin Tae; Choi, Choon-Gi

2012-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "organic polymers show" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

Dynamics in Polymer | ornl.gov  

NLE Websites -- All DOE Office Websites (Extended Search)

Neutron scattering characterizes dynamics in polymer family Agatha Bardoel - December 01, 2012 Interior of BASIS. Research Contact: Christine Gerstl Understanding the interplay...

282

Imaging Hydrated Microbial Extracellular Polymers: Comparative...  

NLE Websites -- All DOE Office Websites (Extended Search)

dehydration-based sample preparation that resulted in the collapse of hydrated gel-like EPS into filamentous structures. Dehydration-induced polymer collapse can lead to...

283

Heat insulation layer of polymer composite material  

Science Journals Connector (OSTI)

A new heat insulation layer polymer composite material is developed, within whose composition there is foam polyurethane and basaltoplastic. Results are provided for...

G. P. Ponomareva; A. A. Artemenko; O. M. Sladkov…

2010-05-01T23:59:59.000Z

284

Efficient Polymer Solar Cells - Energy Innovation Portal  

NLE Websites -- All DOE Office Websites (Extended Search)

Laboratory researchers have developed a process for producing more efficient polymer solar cells by increasing light absorption through a thin and uniform light-absorbing...

285

Plasma immersion ion implantation on polymers.  

E-Print Network (OSTI)

??The focus of this thesis is to achieve plasma based surface modification of polymers. Highly ionized carbon plasma was generated from a filtered cathodic arc… (more)

Sze, Jia Yin.

2010-01-01T23:59:59.000Z

286

Semi-Crystalline Polymers Semi-crystalline polymers, such as polyethylene and polypropylene are common  

E-Print Network (OSTI)

Semi-Crystalline Polymers Semi-crystalline polymers, such as polyethylene and polypropylene are common commercial materials used for consumer products. Polyethylene is the most widely used polymer due and processing conditions. Equistar, in Cincinnati, is the largest producer of polyethylene in the US and P

Beaucage, Gregory

287

Production of structures for microfluidics using polymer imprint techniques  

Science Journals Connector (OSTI)

We present a technology for the fabrication of three dimensional microfluidic channels in optically transparent substrates consisting of polymers with different properties. The microstructures are fabricated using polymer replication techniques with ... Keywords: Hot embossing, Micromechanisation, Micromoldin, Nanoimprint lithography, Polymers

C. A. Mills; E. Martinez; F. Bessueille; G. Villanueva; J. Bausells; J. Samitier; A. Errachid

2005-03-01T23:59:59.000Z

288

Systematic development of coarse-grained polymer models  

E-Print Network (OSTI)

The coupling between polymer models and experiments has improved our understanding of polymer behavior both in terms of rheology and dynamics of single molecules. Developing these polymer models is challenging because of ...

Underhill, Patrick Theodore

2006-01-01T23:59:59.000Z

289

Aliphatic thioether polymers as novel cathode active materials for rechargeable lithium battery  

Science Journals Connector (OSTI)

Two aliphatic thioether polymers, poly[methanetetryl-tetra(thiomethylene)] (PMTTM) and poly(2,4-dithiopentanylene) (PDTP) were designed, synthesized, characterized and tested as cathode active materials. The chemical structure of polymers was confirmed by FT-IR, FT-Raman, and XPS spectral analysis. Both polymers were found to have electrochemical activity as cathode materials for rechargeable lithium battery by the electrochemical tests. The specific capacity of PMTTM was 504 mA h g?1 at the third cycle and faded to 200 mA h g?1 after 10 cycles; PDTP showed low and stable specific capacity around 100 mA h g?1 even after 50 cycles. The specific capacity of fully saturated aliphatic thioether polymers demonstrated that thioether bonds offered energy storage. It was proposed that thioether bond was oxidized to form thioether cations with the help of ether solvents.

Jingyu Zhang; Lingbo Kong; Lizhi Zhan; Jing Tang; Hui Zhan; Yunhong Zhou; Caimao Zhan

2008-01-01T23:59:59.000Z

290

X-ray Imaging Shows Feather Patterns of First Birds | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

X-ray Imaging Shows Feather Patterns of First Birds X-ray Imaging Shows Feather Patterns of First Birds X-ray Imaging Shows Feather Patterns of First Birds June 30, 2011 - 2:56pm Addthis A collage of images. Top, optical images of: blue jay feather, squid, and fossil fish with feather. Bottom: x-ray images showing the distribution of copper (red) in the same organisms. | Photo Courtesy of Gregory Stewart, SLAC National Accelerator Laboratory A collage of images. Top, optical images of: blue jay feather, squid, and fossil fish with feather. Bottom: x-ray images showing the distribution of copper (red) in the same organisms. | Photo Courtesy of Gregory Stewart, SLAC National Accelerator Laboratory Niketa Kumar Niketa Kumar Public Affairs Specialist, Office of Public Affairs What are the key facts? Through x-ray fluorescent imaging techniques developed at the

291

Iron acetylacetonate complex anchored on silica xerogel polymer  

Science Journals Connector (OSTI)

Iron(III) acetylacetonate complex immobilized on silica surface was obtained by the following three steps synthesis: (i) synthesis of organic precursor (acacsil) containing the acetylacetonate (acac) group; (ii) simultaneous polycondensation of the acacsil with the tetraethylorthosilicate (TEOS) by the sol–gel method resulting in the acac/silica xerogel; and (iii) complexation of the Fe(III) on the acac sites of the xerogel surface forming a Fe-acac/silica xerogel. The xerogels, acac/silica and Fe-acac/silica, are hybrid polymers that present a covalent organic/inorganic interface between the acac groups and silica. Xerogels were characterized by using scanning electron microscopy, energy dispersive spectroscopy, infrared spectroscopy, N2 adsorption desorption isotherms (pore size distribution and surface area) and elemental analysis. The Fe-acac/silica xerogel was tested as heterogeneous catalyst for the cis-cyclooctene epoxidation, employing the same conditions of the homogeneous Mukaiyama system.

Marcia C. Brasil; Edilson V. Benvenutti; José R. Gregório; Annelise E. Gerbase

2005-01-01T23:59:59.000Z

292

Polymers For Advanced Lithium Batteries | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Polymers For Advanced Lithium Batteries Polymers For Advanced Lithium Batteries 2012 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Program Annual Merit Review and...

293

High-Voltage Solid Polymer Batteries for Electric Drive Vehicles...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

High-Voltage Solid Polymer Batteries for Electric Drive Vehicles High-Voltage Solid Polymer Batteries for Electric Drive Vehicles 2013 DOE Hydrogen and Fuel Cells Program and...

294

Polymers For Advanced Lithium Batteries | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Polymers For Advanced Lithium Batteries Polymers For Advanced Lithium Batteries 2011 DOE Hydrogen and Fuel Cells Program, and Vehicle Technologies Program Annual Merit Review and...

295

High-Voltage Solid Polymer Batteries for Electric Drive Vehicles...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

High-Voltage Solid Polymer Batteries for Electric Drive Vehicles High-Voltage Solid Polymer Batteries for Electric Drive Vehicles 2012 DOE Hydrogen and Fuel Cells Program and...

296

Development of Polymer Electrolytes for Advanced Lithium Batteries...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Development of Polymer Electrolytes for Advanced Lithium Batteries Development of Polymer Electrolytes for Advanced Lithium Batteries 2013 DOE Hydrogen and Fuel Cells Program and...

297

Fabrication and performance of polymer-nanocomposite anti-reflective...  

Office of Scientific and Technical Information (OSTI)

News, VA (United States) Design of polymer anti-reflective (AR) optical coatings for plastic substrates is challenging because polymers exhibit a relatively narrow range of...

298

Fiber-Reinforced Polymer Composites: Pursuing the Promise | Department...  

Energy Savers (EERE)

Fiber-Reinforced Polymer Composites: Pursuing the Promise Fiber-Reinforced Polymer Composites: Pursuing the Promise High-strength, lightweight advanced composites will deliver a...

299

Phosphate-Containing Polyethylene Glycol Polymers Prevent Lethal...  

NLE Websites -- All DOE Office Websites (Extended Search)

Phosphate-Containing Polyethylene Glycol Polymers Prevent Lethal Sepsis by Multidrug-Resistant Pathogens. Phosphate-Containing Polyethylene Glycol Polymers Prevent Lethal Sepsis by...

300

Title: Pore formation in Polymer Electrolytes Abstract: Much of our ...  

E-Print Network (OSTI)

The efficient conversion of energy from one form to another, particularly solar, ... The polymer electrolytes in Polymer Electrolyte Membrane (PEM) fuel cells ...

Note: This page contains sample records for the topic "organic polymers show" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

azo dye polymer: Topics by E-print Network  

NLE Websites -- All DOE Office Websites (Extended Search)

alignment 10 Solvent-enhanced dye diffusion in polymer thin films for polymer light-emitting diode application Engineering Websites Summary: Solvent-enhanced dye diffusion in...

302

Self-Assembly of Polymer Nano-Elements on Sapphire  

NLE Websites -- All DOE Office Websites (Extended Search)

Self-Assembly of Polymer Nano-Elements on Sapphire Print Self-assembly of polymers promises to vastly improve the properties and manufacturing processes of nanostructured...

303

Haverford Researchers Create Carbon Dioxide-Separating Polymer  

NLE Websites -- All DOE Office Websites (Extended Search)

Haverford College Researchers Create Carbon Dioxide-Separating Polymer Haverford College Researchers Create Carbon Dioxide-Separating Polymer August 1, 2012 | Tags: Basic Energy...

304

What Is a Gun Show, Exactly? Gun shows are defined in the U.S. Code of Federal  

E-Print Network (OSTI)

2 How Gun Shows Work What Is a Gun Show, Exactly? Gun shows are defined in the U.S. Code of Federal. But other states have enacted more specific definitions as they acted to regulate gun shows themselves or gun sales at gun shows but not elsewhere (Table 2-1). In the parking lot of a gun show in Pharr, Texas

Leistikow, Bruce N.

305

Tandem Polymer Solar Cells Featuring a Spectrally Matched Low-Bandgap Polymer  

SciTech Connect

Tandem solar cells provide an effective way to harvest a broader spectrum of solar radiation by combining two or more solar cells with different absorption bands. However, for polymer solar cells, the performance of tandem devices lags behind single-layer solar cells mainly due to the lack of a suitable low-bandgap polymer. Here, we demonstrate highly efficient single and tandem polymer solar cells featuring a low-bandgap conjugated polymer (PBDTT-DPP: bandgap, {approx}1.44 eV). A single-layer device based on the polymer provides a power conversion efficiency of {approx}6%. When the polymer is applied to tandem solar cells, a power conversion efficiency of 8.62% is achieved, which is, to the best of our knowledge, the highest certified efficiency for a polymer solar cell to date.

Dou, L.; You, J.; Yang, J.; Chen, C. C.; He, Y.; Murase, S.; Moriarty, T.; Emery, K.; Li, G.; Yang, Y.

2012-03-01T23:59:59.000Z

306

Knot localization in adsorbing polymer rings  

E-Print Network (OSTI)

We study by Monte Carlo simulations a model of knotted polymer ring adsorbing onto an impenetrable, attractive wall. The polymer is described by a self-avoiding polygon (SAP) on the cubic lattice. We find that the adsorption transition temperature, the crossover exponent $\\phi$ and the metric exponent $\

B. Marcone; E. Orlandini; A. L. Stella

2007-09-10T23:59:59.000Z

307

Computationally-guided Design of Polymer Electrolytes  

E-Print Network (OSTI)

of Polymer Electrolytes Global Significance While progress of sustainable energy- harvesting techniques is promising, tandem advancements in energy storage are required to maintain a stable energy supply be a valuable contribution to the emerging sustainable energy landscape. This project applies polymer physics

308

Multicolored Electrochromism in Polymers: Structures and Devices  

E-Print Network (OSTI)

Multicolored Electrochromism in Polymers: Structures and Devices Avni A. Argun, Pierre-Henri Aubert May 12, 2004 A review of electrochromic (EC) polymers and their applications in absorption/transmission, reflective, and patterned electrochromic devices (ECDs) is presented. Fundamental properties of EC materials

Tanner, David B.

309

Cholesteric Pitch of Lyotropic Polymer Liquid Crystals  

Science Journals Connector (OSTI)

Cholesteric Pitch of Lyotropic Polymer Liquid Crystals ... The cholesteric pitch P of semiflexible helical polymer solutions was formulated using a threaded equivalent freely jointed chain model. ... The structure of cholesteric liquid crystals is characterized by the cholesteric pitch P or the cholesteric wavenumber qc (?2?/P). ...

Takahiro Sato; Jun Nakamura; Akio Teramoto; Mark M. Green

1998-02-03T23:59:59.000Z

310

Fuel cell electrolyte membrane with basic polymer  

DOE Patents (OSTI)

The present invention is an electrolyte membrane comprising an acid and a basic polymer, where the acid is a low-volatile acid that is fluorinated and is either oligomeric or non-polymeric, and where the basic polymer is protonated by the acid and is stable to hydrolysis.

Larson, James M.; Pham, Phat T.; Frey, Matthew H.; Hamrock, Steven J.; Haugen, Gregory M.; Lamanna, William M.

2012-12-04T23:59:59.000Z

311

Polymer surface treatment with particle beams  

DOE Patents (OSTI)

A polymer surface and near surface treatment process produced by irradiation with high energy particle beams. The process is preferably implemented with pulsed ion beams. The process alters the chemical and mechanical properties of the polymer surface in a manner useful for a wide range of commercial applications.

Stinnett, Regan W. (1033 Tramway La. NE., Albuquerque, NM 87122); VanDevender, J. Pace (7604 Lamplighter NE., Albuquerque, NM 87109)

1999-01-01T23:59:59.000Z

312

Polymer surface treatment with particle beams  

DOE Patents (OSTI)

A polymer surface and near surface treatment process produced by irradiation with high energy particle beams is disclosed. The process is preferably implemented with pulsed ion beams. The process alters the chemical and mechanical properties of the polymer surface in a manner useful for a wide range of commercial applications. 16 figs.

Stinnett, R.W.; VanDevender, J.P.

1999-05-04T23:59:59.000Z

313

Shape memory polymer actuator and catheter  

DOE Patents (OSTI)

An actuator system is provided for acting upon a material in a vessel. The system includes an optical fiber and a shape memory polymer material operatively connected to the optical fiber. The shape memory polymer material is adapted to move from a first shape for moving through said vessel to a second shape where it can act upon said material.

Maitland, Duncan J. (Pleasant Hill, CA); Lee, Abraham P. (Walnut Creek, CA); Schumann, Daniel L. (Concord, CA); Matthews, Dennis L. (Moss Beach, CA); Decker, Derek E. (Byron, CA); Jungreis, Charles A. (Pittsburgh, PA)

2007-11-06T23:59:59.000Z

314

Gelation threshold of cross-linked polymer brushes  

Science Journals Connector (OSTI)

The cross-linking of polymer brushes is studied using the bond-fluctuation model. By mapping the cross-linking process into a two-dimensional (2D) percolation problem within the lattice of grafting points, we investigate the gelation transition in detail. We show that the particular properties of cross-linked polymer brushes can be reduced to the distribution of bonds which are formed between the grafted chains, and we propose scaling arguments to relate the gelation threshold to the chain length and the grafting density. The gelation threshold is lower than the percolation threshold for 2D bond percolation because of the longer range and broad distribution of bonds formed by the cross-linking process. We term this type of percolation problem star percolation. We observe a broad crossover from mean-field to critical percolation behavior by analyzing the cluster size distribution near the gelation threshold.

Max Hoffmann; Michael Lang; Jens-Uwe Sommer

2011-02-23T23:59:59.000Z

315

Examining the effect of additives and thicknesses of hole transport layer for efficient organic solar cell devices  

Science Journals Connector (OSTI)

Poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS), a conducting polymer, has been receiving a great deal of attention for next generation optoelectronic organic devices. In this report, we discu...

Shizuyasu Ochiai; Palanisamy Kumar; Kannappan Santhakumar…

2013-07-01T23:59:59.000Z

316

MMMaaattteeerrriiiaaalllsss SSSeeemmmiiinnnaaarrr There have been great interests in recent years in exploring the use of organic-inorganic hybrid electronic  

E-Print Network (OSTI)

Early Career Development (CAREER) Award from the National Science Foundation and a Solar Energy energy applications including photovoltaics and light-emitting devices (LEDs). Organic electronic materials such as conjugated polymers have advantages in low material cost, tunability in material

317

Photoconversion of gasified organic materials into biologically-degradable plastics  

DOE Patents (OSTI)

A process is described for converting organic materials (such as biomass wastes) into a bioplastic suitable for use as a biodegradable plastic. In a preferred embodiment the process involves thermally gasifying the organic material into primarily carbon monoxide and hydrogen, followed by photosynthetic bacterial assimilation of the gases into cell material. The process is ideally suited for waste recycling and for production of useful biodegradable plastic polymer. 3 figures.

Weaver, P.F.; Pinching Maness.

1993-10-05T23:59:59.000Z

318

Photoconversion of gasified organic materials into biologically-degradable plastics  

DOE Patents (OSTI)

A process is described for converting organic materials (such as biomass wastes) into a bioplastic suitable for use as a biodegradable plastic. In a preferred embodiment the process involves thermally gasifying the organic material into primarily carbon monoxide and hydrogen, followed by photosynthetic bacterial assimilation of the gases into cell material. The process is ideally suited for waste recycling and for production of useful biodegradable plastic polymer.

Weaver, Paul F. (Golden, CO); Maness, Pin-Ching (Golden, CO)

1993-01-01T23:59:59.000Z

319

Functionalized Polymers For Binding To Solutes In Aqueous Solutions  

NLE Websites -- All DOE Office Websites (Extended Search)

Functionalized Polymers For Binding To Solutes In Aqueous Solutions Functionalized Polymers For Binding To Solutes In Aqueous Solutions Functionalized Polymers For Binding To Solutes In Aqueous Solutions A functionalized polymer for binding a dissolved molecule in an aqueous solution is presented. Available for thumbnail of Feynman Center (505) 665-9090 Email Functionalized Polymers For Binding To Solutes In Aqueous Solutions A functionalized polymer for binding a dissolved molecule in an aqueous solution is presented. The polymer has a backbone polymer to which one or more functional groups are covalently linked. The backbone polymer can be such polymers as polyethylenimine, polyvinylamine, polyallylamine, and polypropylamine. These polymers are generally water-soluble, but can be insoluble when cross-linked. The functional group can be for example diol

320

POLYMERS IN STRUCTURAL DESIGN APPLICATIONS  

E-Print Network (OSTI)

FEP resin applications include wire and cable insulation for computer and electronic systems, telephone and alarm systems, and business-machine interconnects, FEP resin is also supplied as extruded sheet and film for release surfaces, roll covers, linings for chemical-processing tanks, and piping. A concentrate is available for Freon-blown-foam wire coating. PFA resins are used for hightemperature wire and cable insulation, heat-shrinkable tubing and roll covers, chemical-resistant linings for process-equipment components, and in semiconductor processing equipment. Materials do not adhere readily to the slippery surface of FEP, PFA, and PTFE parts. Surfaces can be chemically etched, however, to permit bonding with adhesives. Thus, low-friction surfaces of fluorocarbon tape or film can be bonded to steel, aluminum, rubber, or other materials. FEP and PFA parts can be heat sealed to themselves, to PTFE parts, or to metals at low pressure and temperatures above 310 °C. CTFE: Sensitivity to processing conditions is greater in CTFE resins than in most polymers.Molding and extruding operations require accurate temperature control, flow channel streamlining, and high pressure because of the high melt viscosity of these materials. With too little heat, the plastic is unworkable; too much heat degrades the polymer. Degradation begins at about 274 °C. Because of

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Note: This page contains sample records for the topic "organic polymers show" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

Kinetic Control of Recombination in Organic Photovoltaics: The Role of Spin  

E-Print Network (OSTI)

In photovoltaic diodes recombination of photogenerated electrons and holes is a major loss process. Biological light harvesting complexes (LHCs) prevent recombination via the use of cascade structures, which lead to spatial separation of charge-carriers1. In contrast, the nanoscale morphology and high charge densities in organic photovoltaic cells (OPVs) give a high rate of electron-hole encounters, which should result in the formation of spin triplet excitons, as in organic light emitting diodes (OLEDs)2. OPVs would have poor quantum efficiencies if every encounter lead to recombination, but state-of-the-art OPVs demonstrate near-unity quantum efficiency3. Here we show that this suppression of recombination can be engineered through the interplay between spin, energetics and delocalisation of electronic excitations in organic semiconductors. We use time-resolved spectroscopy to study a series of model, high efficiency polymer-fullerene systems in which the lowest lying molecular triplet exciton (T1) (on the polymer) lies below the intermolecular charge transfer state (CT). We observe the formation of T1 states following bimolecular recombination, indicating that encounters of spin-uncorrelated electrons and holes generate CT states with both spin singlet (1CT) and spin triplet (3CT) characters. We show that triplet exciton formation can be the major loss mechanism in OPVs. However, we find that even when energetically favoured, the relaxation of 3CT to T1 can be strongly suppressed, via control over wavefunction delocalisation, allowing for the dissociation of 3CT back to free changes, thereby reducing recombination and enhancing device performance. Our results point towards new design rules for artificial photo-conversion systems, enabling the suppression of electron-hole recombination, and also for OLEDs, avoiding the formation of triplet states and enhancing fluorescence efficiency.

Akshay Rao; Philip C. Y. Chow; Simon Gélinas; Cody W. Schlenker; David S. Ginger; Chang-Zhi Li; Hin-Lap Yip; Alex K-Y. Jen; Richard H. Friend

2013-03-12T23:59:59.000Z

322

DOE Releases New Analysis Showing Significant Advances in Electric...  

Office of Environmental Management (EM)

Analysis Showing Significant Advances in Electric Vehicle Deployment DOE Releases New Analysis Showing Significant Advances in Electric Vehicle Deployment February 8, 2011 -...

323

Science Against Stress: Research Shows Way to Some Cellular Relief...  

Energy Savers (EERE)

Science Against Stress: Research Shows Way to Some Cellular Relief Science Against Stress: Research Shows Way to Some Cellular Relief December 30, 2011 - 10:14am Addthis...

324

The Chemistry Magic Show Captivates Kids | GE Global Research  

NLE Websites -- All DOE Office Websites (Extended Search)

Chemistry Magic Show Captivates Kids The Chemistry Magic Show Captivates Kids Vin Smentkowski 2012.11.16 My colleague, Christopher (Chris) Dosch, also known as Ignito the Magician,...

325

Sandia National Laboratories: Sandia Study Shows Large LNG Fires...  

NLE Websites -- All DOE Office Websites (Extended Search)

ClimateECInfrastructure SecurityAnalysisSandia Study Shows Large LNG Fires Hotter but Smaller Than Expected Sandia Study Shows Large LNG Fires Hotter but Smaller Than Expected...

326

CNF-reinforced polymer aerogels: Influence of the synthesis variables and economic evaluation  

Science Journals Connector (OSTI)

Abstract The synthesis of organic polymer aerogels reinforced with carbon nanofibers (CNF-reinforced polymer aerogels) using polyvinyl alcohol (PVA) as the polymeric matrix, by means of the freeze-drying method has been carried out. The influence of the CNF content in the polymer aerogel and the use of different solvents on the physical, morphological and mechanical properties of the final aerogel composites have been evaluated. The thermal conductivity and the porosity of CNF-reinforced polymer aerogels increased with the content of CNF. However, the density of the synthesized aerogels decreased when the CNF content was increased up to a value of 87.5 g/L. According to a dynamic mechanical analysis, the incorporation of CNF into the PVA matrix enhanced the mechanical characteristics and the glass transition temperature of the resulting CNF-reinforced polymer aerogels. On the other hand, aerogels synthesized using water as the solvent presented higher densities than those synthesized using acetone, butanol, ethanol or tert-butanol. However, their thermal conductivity values were very similar. Finally, an economic evaluation of the production of these materials using the freeze-drying technique was carried out. It was demonstrated the economic feasibility of the manufacturing process of aerogels proposed. Furthermore, no toxic pollutants were released at temperatures below 180 °C.

Sandra Víctor-Román; Carolina Simón-Herrero; Amaya Romero; Ignacio Gracia; José Luis Valverde; Luz Sánchez-Silva

2015-01-01T23:59:59.000Z

327

Sludge organics bioavailability  

SciTech Connect

Concern over the bioavailability of toxic organics that can occur in municipal sludges threatens routine land application of sludge. Available data, however, show that concentrations of priority organics in normal sludges are low. Sludges applied at agronomic rates yield chemical concentrations in soil-sludge mixtures 50 to 100 fold lower. Plant uptake at these pollutant concentrations (and at much higher concentrations) is minimal. Chemicals are either (1) accumulated at extremely low levels (PCBs), (2) possibly accumulated, but then rapidly metabolized within plants to extremely low levels (DEHP), or (3) likely degraded so rapidly in soil that only minor contamination occurs (PCP and 2,4-DNP).

Eiceman, G.E.; Bellin, C.A.; Ryan, J.A.; O'Connor, G.A.

1991-01-01T23:59:59.000Z

328

EFFECTS OF TRITIUM GAS EXPOSURE ON ELECTRICALLY CONDUCTING POLYMERS  

SciTech Connect

Effects of beta (tritium) and gamma irradiation on the surface electrical conductivity of two types of conducting polymer films are documented to determine their potential use as a sensing and surveillance device for the tritium facility. It was shown that surface conductivity was significantly reduced by irradiation with both gamma and tritium gas. In order to compare the results from the two radiation sources, an approximate dose equivalence was calculated. The materials were also sensitive to small radiation doses (<10{sup 5} rad), showing that there is a measurable response to relatively small total doses of tritium gas. Spectroscopy was also used to confirm the mechanism by which this sensing device would operate in order to calibrate this sensor for potential use. It was determined that one material (polyaniline) was very sensitive to oxidation while the other material (PEDOT-PSS) was not. However, polyaniline provided the best response as a sensing material, and it is suggested that an oxygen-impermeable, radiation-transparent coating be applied to this material for future device prototype fabrication. A great deal of interest has developed in recent years in the area of conducting polymers due to the high levels of conductivity that can be achieved, some comparable to that of metals [Gerard 2002]. Additionally, the desirable physical and chemical properties of a polymer are retained and can be exploited for various applications, including light emitting diodes (LED), anti-static packaging, electronic coatings, and sensors. The electron transfer mechanism is generally accepted as one of electron 'hopping' through delocalized electrons in the conjugated backbone, although other mechanisms have been proposed based on the type of polymer and dopant [Inzelt 2000, Gerard 2002]. The conducting polymer polyaniline (PANi) is of particular interest because there are extensive studies on the modulation of the conductivity by changing either the oxidation state of the main backbone chain, or by protonation of the imine groups [de Acevedo, 1999]. There are several types of radiation sensors commercially available, including ionization chambers, geiger counters, proportional counters, scintillators and solid state detectors. Each type has advantages, although many of these sensors require expensive electronics for signal amplification, are large and bulky, have limited battery life or require expensive materials for fabrication. A radiation sensor constructed of a polymeric material could be flexible, light, and the geometry designed to suit the application. Very simple and inexpensive electronics would be necessary to measure the change in conductivity with exposure to radiation and provide an alarm system when a set change of conductivity occurs in the sensor that corresponds to a predetermined radiation dose having been absorbed by the polymer. The advantages of using a polymeric sensor of this type rather than those currently in use are the flexibility of sensor geometry and relatively low cost. It is anticipated that these sensors can be made small enough for glovebox applications or have the ability to monitor the air tritium levels in places where a traditional monitor cannot be placed. There have been a few studies on the changes in conductivity of polyaniline specifically for radiation detection [de Acevedo, 1999; Lima Pacheco, 2003], but there have been no reports on the effects of tritium (beta radiation) on conducting polymers, such as polyaniline or polythiophene. The direct implementation of conducting polymers as radiation sensor materials has not yet been commercialized due to differing responses with total dose, dose rate, etc. Some have reported a large increase in the surface conductivity with radiation dose while others report a marked decrease in conductive properties; these differing observations may reflect the competing mechanisms of chain scission and cross-linking. However, it is clear that the radiation dose effects on conducting polymers must be fully understood before these materials can be used

Kane, M.; Clark, E.; Lascola, R.

2009-12-16T23:59:59.000Z

329

Magnetism reflectometer study shows LiF layers improve efficiency in spin valve devices  

SciTech Connect

New, more efficient materials for spin valves - a device used in magnetic sensors, random access memories, and hard disk drives - may be on the way based on research using the magnetism reflectometer at Oak Ridge National Laboratory (ORNL). Spin valve devices work by means of two or more conducting magnetic material layers that alternate their electrical resistance depending on the layers alignment. Giant magnetoresistance is a quantum mechanical effect first observed in thin film structures about 20 years ago. The effect is observed as a significant change in electrical resistance, depending on whether the magnetization of adjacent ferromagnetic layers is in a parallel or an antiparallel magnetic alignment. 'What we are doing here is developing new materials. The search for new materials suitable for injecting and transferring carriers with a preferential spin orientation is most important for the development of spintronics,' said Valeria Lauter, lead instrument scientist on the magnetism reflectometer at the Spallation Neutron Source (SNS), who collaborated on the experiment. The researchers discovered that the conductivity of such materials is improved when an organic polymer semiconductor layer is placed between the magnetic materials. Organic semiconductors are now the material of choice for future spin valve devices because they preserve spin coherence over longer times and distances than conventional semiconductors. While research into spin valves has been ongoing, research into organic semiconductors is recent. Previous research has shown that a 'conductivity mismatch' exists in spin valve systems in which ferromagnetic metal electrodes interface with such organic semiconductors as Alq3 ({pi}-conjugated molecule tris(8-hydroxy-quinoline) aluminium). This mismatch limits the efficient injection of the electrons from the electrodes at the interface with the semiconductor material. However, lithium fluoride (LiF), commonly used in light-emitting diodes, has been found to enhance the injection of electrons through the semiconductor. Researchers from the University of Alabama and ORNL used polarized neutrons at the magnetism reflectometer at SNS to investigate the electronic, magnetic, and structural properties of the electrodes in a novel system. In this system, the magnetic layers cobalt and Ni{sub 80}Fe{sub 20} are interfaced with spacer layers composed of the organic semiconductor Alq3. A coupling layer of LiF is inserted to separate the magnetized layers from the semiconductor. 'ALQ3 is an organic semiconductor material,' said Lauter. 'Normally in these systems a first magnetic layer is grown on a hard substrate so that one can get the controlled magnetic parameters. Then you grow the organic semiconductor layer, followed by another magnetic material layer, such as cobalt.' In addition to determining the effect of the LiF layers on the efficiency of the electron injection, the researchers wanted to determine the magnetic properties of the cobalt and Ni{sub 80}Fe{sub 20} as well as the interfacial properties: whether there is interdiffusion of cobalt through the LiF layer to the semiconductor, for example. The researchers used polarized neutrons at beam line 4A to probe the entire, layer-by-layer assembly of the system. 'Reflectometry with polarized neutrons is a perfect method to study thin magnetic films,' Lauter said. 'These thin films - if you put one on a substrate, you see it just like a mirror. However, this mirror has a very complicated internal multilayer structure. The neutrons look inside this complicated structure and characterize each and every interface. Due to the depth sensitivity of the method, we measure the structural and magnetic properties of each layer with the resolution of 0.5 nm. The neutron scattering results found that inserting LiF as a barrier significantly improves the quality of the interface, increasing the injection of electrons from the magnetic layer through the organic semiconductor in the spin valve and enhancing the overall properties of the system. In related work the magneti

Bardoel, Agatha A [ORNL; Lauter, Valeria [ORNL; Szulczewski, Greg J [ORNL

2012-01-01T23:59:59.000Z

330

Molecular Design of Doped Polymers for Thermoelectric Systems-Final Technical Report  

SciTech Connect

The self-assembly of organic semiconducting molecules and polymers is critical for their electrical properties. This project addressed the design of organic semiconductors with novel synthetic building blocks for proton-dopable conducting materials and the molecular order and microstructure of high performance semiconducting polymers blended with charge transfer dopants. Novel azulene donor-acceptor materials were designed and synthesized with unique electronic effects upon protonation to generate charged species in solution. The microstructure and optical properties of these derivatives were examined to develop structure-property relationships. Studies of the microstructure of blends of charge transfer doped semiconducting polymers revealed highly ordered conductive phases in blends. The molecular packing of one blend was studied in detail using a combination of solid-state NMR and x-ray scattering revealing that dopant incorporation is unlikely to be random as assumed in transport models. Studies of the electrical properties of these highly ordered blends revealed a universal trend between the thermopower and electrical conductivity of semiconducting polymers that is independent of the doping mechanism.

Chabinyc, Michael L. [University of California, Santa Barbara; Hawker, Craig J. [University of California, Santa Barbara

2013-10-09T23:59:59.000Z

331

Organic/inorganic nanocomposites, methods of making, and uses as a permeable reactive barrier  

DOE Patents (OSTI)

Nanocomposite materials having a composition including an inorganic constituent, a preformed organic polymer constituent, and a metal ion sequestration constituent are disclosed. The nanocomposites are characterized by being single phase, substantially homogeneous materials wherein the preformed polymer constituent and the inorganic constituent form an interpenetrating network with each other. The inorganic constituent may be an inorganic oxide, such as silicon dioxide, formed by the in situ catalyzed condensation of an inorganic precursor in the presence of the solvated polymer and metal ion sequestration constituent. The polymer constituent may be any hydrophilic polymer capable of forming a type I nanocomposite such as, polyacrylonitrile (PAN), polyethyleneoxide (PEO), polyethylene glycol (PEG), polyvinyl acetate (PVAc), polyvinyl alcohol (PVA), and combinations thereof. Nanocomposite materials of the present invention may be used as permeable reactive barriers (PRBs) to remediate contaminated groundwater. Methods for making nanocomposite materials, PRB systems, and methods of treating groundwater are also disclosed.

Harrup, Mason K. (Idaho Falls, ID); Stewart, Frederick F. (Idaho Falls, ID)

2007-05-15T23:59:59.000Z

332

MODEL AND OPTIMIZATION OF ORGANIC PHOTOVOLTAIC CELLS Amelia McNamara  

E-Print Network (OSTI)

advantages. In contrast to the typical silicon-based solar cells, organic cells can be formed from extremely the organic photovoltaic cell, an important topic in the energy industry which has not been well studied. We are especially interested in the optimization of the two active layers in the solar cell, the PEOPT polymer

333

Open Questions about Polymer Friction JANET S. WONG,1  

E-Print Network (OSTI)

perfluoropolyethers are more effective than competing polymers. In the regulation of the viscosity of engine oils

Granick, Steve

334

Conductive inks for metalization in integrated polymer microsystems  

DOE Patents (OSTI)

A system of metalization in an integrated polymer microsystem. A flexible polymer substrate is provided and conductive ink is applied to the substrate. In one embodiment the flexible polymer substrate is silicone. In another embodiment the flexible polymer substrate comprises poly(dimethylsiloxane).

Davidson, James Courtney (Livermore, CA); Krulevitch, Peter A. (Pleasanton, CA); Maghribi, Mariam N. (Livermore, CA); Benett, William J. (Livermore, CA); Hamilton, Julie K. (Tracy, CA); Tovar, Armando R. (San Antonio, TX)

2006-02-28T23:59:59.000Z

335

Polymer nanocomposites based on transition metal ion modified organoclays  

E-Print Network (OSTI)

from both academic and industrial laboratories in the past several years [1,2]. Polymer nanocom in modulus, toughness, and barrier properties may be obtained. Typically, the improved properties can.polymer.2006.12.005 Polymer 48 (2007) 827e840 www.elsevier.com/locate/polymer #12;formation of silica

Frenkel, Anatoly

336

Glass/polymer composites and methods of making  

DOE Patents (OSTI)

The present invention relates to new glass/polymer composites and methods for making them. More specifically, the invention is glass/polymer composites having phases that are at the molecular level and thereby practicably indistinguishable. The invention further discloses making molecular phase glass/polymer composites by mixing a glass and a polymer in a compatible solvent.

Samuels, W. D. (Richland, WA); Exarhos, Gregory J. (Richland, WA)

1995-01-01T23:59:59.000Z

337

SunShot Initiative: Organic Photovoltaics Research  

NLE Websites -- All DOE Office Websites (Extended Search)

Organic Photovoltaics Research to Organic Photovoltaics Research to someone by E-mail Share SunShot Initiative: Organic Photovoltaics Research on Facebook Tweet about SunShot Initiative: Organic Photovoltaics Research on Twitter Bookmark SunShot Initiative: Organic Photovoltaics Research on Google Bookmark SunShot Initiative: Organic Photovoltaics Research on Delicious Rank SunShot Initiative: Organic Photovoltaics Research on Digg Find More places to share SunShot Initiative: Organic Photovoltaics Research on AddThis.com... Concentrating Solar Power Photovoltaics Research & Development Crystalline Silicon Thin Films Multijunctions Organic Photovoltaics Dye-Sensitized Solar Cells Competitive Awards Systems Integration Balance of Systems Organic Photovoltaics Research Graphic showing the seven layers of an organic PV cell: electrode, donor, acceptor, active layer, PEDOT:PSS, transparent conductive oxide, and glass.

338

Meaning of reaction orders in polymer:fullerene solar cells  

Science Journals Connector (OSTI)

Nongeminate recombination in polymer:fullerene solar cells is frequently characterized using transient optoelectronic measurements that allow the determination of recombination rates, charge carrier lifetimes, and average charge carrier concentrations as a function of voltage. These data are often interpreted in terms of an empirical reaction order defining how recombination depends on measured charge density. In polymer:fullerene solar cells, the empirical reaction orders are often considerably larger than 2, which had previously been explained in terms of the nonlinear relationship between mobile and trapped charge carriers in the presence of an exponential tail of localized states. Here, we show that experimentally determined reaction orders depend not only on the shape of the density of states but also on the spatial distribution of carriers. In particular, in solar cells with small depletion regions due to small active layer thicknesses or due to large unintentional background doping of the polymers, the reaction order can assume values that are much larger than the value expected from the shape of the density of states alone.

Thomas Kirchartz and Jenny Nelson

2012-10-05T23:59:59.000Z

339

Friction as a probe of surface properties of a polymer glass  

E-Print Network (OSTI)

We probe the temperature dependence of friction at the interface between a glassy poly(methylmethacrylate) lens and a flat substrate coated with a methyl-terminated self-assembled monolayer. The monolayer exhibits density defects which act as pinning sites for the polymer chains. We show that the shear response of such an interface supports the existence, at the surface of the glassy polymer, of a nanometer-thick layer of mobile chains. Friction can be ascribed to the interplay between viscouslike dissipation in this layer and depinning of chains adsorbed on the substrate. We further show that the pinning dynamics is controlled by \\beta rotational motions localized at the interface.

Lionel Bureau

2007-07-12T23:59:59.000Z

340

The viscosity of polymer melts  

Science Journals Connector (OSTI)

A simple theoretical argument is presented that gives the scaling behavior of the relaxation time in a polymer melt as a function of molecular weight M. The framework for this theory is based on the reptation model of de Gennes but also incorporates the effects of excluded volume. It is argued that the effects of excluded volume change the relaxation time from M 3 to M 3 exp(const×M 2/3). This argument agrees qualitatively with a direct simulation of the reptation model that incorporates many?chain excluded volume interactions. This simulation fits experimental data quite well giving an effective power law relationship between viscosity ? and molecular weight namely ??M 3.4±.1.

J. M. Deutsch

1986-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "organic polymers show" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


341

Polymer brush under strong shear  

Science Journals Connector (OSTI)

End-grafted polymer brush exposed to strong shear solvent flow is studied. Under strong enough shear flow, the shear force is nonlinear with the blob size depending on the shear force and not on the monomer volume fraction ?. We derive the crossover force scale separating the weak and strong shear regime. The velocity profile of the flow, v(z), inside and above the brush is calculated analytically by treating the flow as in a porous medium and solving the Brinkman equation. The solution of the velocity profile is then combined with nonequilibrium Monte Carlo simulation data, which allow a self-consistent determination of the chain end-to-end length and the incline angle of the chain. We derive the scaling form for the chain positions x(n) for the nth monomer and verified by our simulation data. We further obtain analytical expression for x(n) in terms of the effective viscosity of the model.

Pik-Yin Lai and Chee-Yuen Lai

1996-12-01T23:59:59.000Z

342

Image enhancement with polymer grid triode arrays  

SciTech Connect

An array of polymer grid triodes connected by a common grid functions as a {open_quotes}plastic retina,{close_quotes} providing local contrast gain control for image enhancement. This simple device, made from layers of conducting polymers, functions as an active resistive network that performs center-surround filtering. The polymer grid triode array with common grid is a continuous analog of the discrete approach of Mead, with a variety of fabrication advantages and significant savings in area within the unit cell of each pixel. 6 refs., 4 figs.

Heeger, A.J.; Heeger, D.J.; Langan, J. [UNIAX Corporation, Santa Barbara, CA (United States)] [and others

1995-12-08T23:59:59.000Z

343

New Carbon Storage Atlas Shows Hundreds of Years of CO2 Storage Potential |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Carbon Storage Atlas Shows Hundreds of Years of CO2 Storage Carbon Storage Atlas Shows Hundreds of Years of CO2 Storage Potential New Carbon Storage Atlas Shows Hundreds of Years of CO2 Storage Potential December 21, 2012 - 9:58am Addthis Atlas IV was created by the National Energy Technology Laboratory (NETL), and includes input from the more than 400 organizations in 43 states and four Canadian provinces that make up the Department’s seven Regional Carbon Sequestration Partnerships (as shown above). See this map here. Atlas IV was created by the National Energy Technology Laboratory (NETL), and includes input from the more than 400 organizations in 43 states and four Canadian provinces that make up the Department's seven Regional Carbon Sequestration Partnerships (as shown above). See this map here.

344

ANL Study Shows Wind Power Decreases Power Sector Emissions ...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

ANL Study Shows Wind Power Decreases Power Sector Emissions ANL Study Shows Wind Power Decreases Power Sector Emissions May 1, 2012 - 3:38pm Addthis This is an excerpt from the...

345

Energy Innovation Hub Report Shows Philadelphia-area Building...  

Energy Savers (EERE)

Hub Report Shows Philadelphia-area Building Retrofits Could Support 23,500 Jobs Energy Innovation Hub Report Shows Philadelphia-area Building Retrofits Could Support 23,500...

346

Secretary Moniz's Remarks at the Washington Auto Show-- As Delivered  

Energy.gov (U.S. Department of Energy (DOE))

Secretary Moniz's remarks, as delivered, at the 2015 Washington Auto Show in Washington, D.C. on January 22, 2015.

347

High Resolution Additive Patterning of Nanoparticles and Polymers Enabled by Vapor Permeable Polymer Templates.  

E-Print Network (OSTI)

??The structure and chemistry of nanoparticles and polymers are interesting for applications in electronics and sensors. However, because they are outside of the standard material… (more)

Demko, Michael Thomas

2012-01-01T23:59:59.000Z

348

Shanghai Hi Show Photovoltaic Science Technology Co Ltd | Open Energy  

Open Energy Info (EERE)

Hi Show Photovoltaic Science Technology Co Ltd Hi Show Photovoltaic Science Technology Co Ltd Jump to: navigation, search Name Shanghai Hi-Show Photovoltaic Science & Technology Co., Ltd Place Shanghai Municipality, China Zip 201109 Sector Solar Product China-based Manufacturer of module tester and solar simulator. References Shanghai Hi-Show Photovoltaic Science & Technology Co., Ltd[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Shanghai Hi-Show Photovoltaic Science & Technology Co., Ltd is a company located in Shanghai Municipality, China . References ↑ "Shanghai Hi-Show Photovoltaic Science & Technology Co., Ltd" Retrieved from "http://en.openei.org/w/index.php?title=Shanghai_Hi_Show_Photovoltaic_Science_Technology_Co_Ltd&oldid=350840

349

Polymer/Elastomer and Composite Material Science  

NLE Websites -- All DOE Office Websites (Extended Search)

/ Elastomer and / Elastomer and Composite Material Science KEVIN L. SIMMONS Pacific Northwest National Laboratory, Richland, WA DOE Headquarters, Forrestal Bldg. October 17-18, 2012 January 17, 2013 Kevin.simmons@pnnl.gov 1 Outline Hydrogen production, transmission, distribution, delivery system Common themes in the hydrogen system Automotive vs infrastructure Hydrogen use conditions Polymer/elastomer and composites compatibility? Common materials in BOP components, hoses, and liners Common materials in composite tank and piping Material issues Polymers/Elastomers Composites Questions 2 Main Points to Remember 1) Polymers are extensively used in hydrogen and fuel cell applications 2) Hydrogen impact on polymers is not well understood 3) Next steps 3 4 Hydrogen Production Systems

350

Neutron scattering from adsorbed polymer layers  

Science Journals Connector (OSTI)

Neutron scattering from adsorbed polymer layers ... Small-Angle Neutron Scattering Study of Cyclic Poly(ethylene glycol) Adsorption on Colloidal Particles ... Small-Angle Neutron Scattering Study of Cyclic Poly(ethylene glycol) Adsorption on Colloidal Particles ...

Terence Cosgrove; Timothy G. Heath; Keith Ryan; Trevor L. Crowley

1987-11-01T23:59:59.000Z

351

Polymer/Elastomer and Composite Material Science  

Energy.gov (U.S. Department of Energy (DOE))

Presentation by Kevin Simmons, Pacific Northwest National Laboratory, at the U.S. Department of Energy's Polymer and Composite Materials Meeting, held October 17-18, 2012, in Washington, D.C.

352

Chemical vapor deposition of functionalized isobenzofuran polymers  

E-Print Network (OSTI)

This thesis develops a platform for deposition of polymer thin films that can be further tailored by chemical surface modification. First, we explore chemical vapor deposition of functionalized isobenzofuran films using ...

Olsson, Ylva Kristina

2007-01-01T23:59:59.000Z

353

Electrical conductivity of segregated network polymer nanocomposites  

E-Print Network (OSTI)

in both electrical and mechanical properties with low carbon black loading, while the solution-based composite achieves its maximum enhancement at higher carbon black loading (~25wt%). The effect of the particle size ratio between the polymer particle...

Kim, Yeon Seok

2009-06-02T23:59:59.000Z

354

Catalyst supports for polymer electrolyte fuel cells  

Science Journals Connector (OSTI)

...Bruce, Richard Catlow and Peter Edwards Catalyst supports for polymer electrolyte fuel...durability in fuel cells is to discover catalyst supports that do not corrode, or corrode...black support. fuel cells|oxides|catalyst supports|nanoparticles|conductivity...

2010-01-01T23:59:59.000Z

355

Polymer-based electrocaloric cooling devices  

DOE Patents (OSTI)

Cooling devices (i.e., refrigerators or heat pumps) based on polymers which exhibit a temperature change upon application or removal of an electrical field or voltage, (e.g., fluoropolymers or crosslinked fluoropolymers that exhibit electrocaloric effect).

Zhang, Qiming; Lu, Sheng-Guo; Li, Xinyu; Gorny, Lee; Cheng, Jiping; Neese, Bret P; Chu, Baojin

2014-10-28T23:59:59.000Z

356

Numerical Simulation of Surfactant-Polymer Flooding  

Science Journals Connector (OSTI)

We propose a mathematical model (numerical simulation) of surfactant-polymer flooding for a three-phase six-component system. ... model takes into account various phenomena inherent to flooding, the effect of sur...

Baoguang Jin; Hanqiao Jiang; Xiansong Zhang…

2014-03-01T23:59:59.000Z

357

Synthesis and characterization of conducting polymer actuators  

E-Print Network (OSTI)

Conducting polymers are known to mechanically respond to electrochemical stimuli and have been utilized as linear actuators. To date, the most successful mechanism for actuation is ionic ingress and egress, though mechanisms ...

Vandesteeg, Nathan A. (Nathan Alan)

2007-01-01T23:59:59.000Z

358

Large displacement fast conducting polymer actuators  

E-Print Network (OSTI)

Conducting polymers are a promising class of electroactive materials that undergo volumetric changes under applied potentials, which make them particularly useful for many actuation applications. Polypyrrole , is one of ...

Chen, Angela Y. (Angela Ying-Ju), 1982-

2006-01-01T23:59:59.000Z

359

Dynamic Fracture Toughness of Polymer Composites  

E-Print Network (OSTI)

that of defense or transport. In this project, the focus is on determining dynamic fracture toughness property of fiber reinforced polymer composites by using a combined numerical- experimental methodology. Impact tests are conducted on Split-Hopkinson pressure...

Harmeet Kaur

2012-02-14T23:59:59.000Z

360

Carbon nanotube polymer composition and devices  

DOE Patents (OSTI)

A thin film device and compound having an anode, a cathode, and at least one light emitting layer between the anode and cathode, the at least one light emitting layer having at least one carbon nanotube and a conductive polymer.

Liu, Gao (Oakland, CA); Johnson, Stephen (Richmond, CA); Kerr, John B. (Oakland, CA); Minor, Andrew M. (El Cerrito, CA); Mao, Samuel S. (Castro Valley, CA)

2011-06-14T23:59:59.000Z

Note: This page contains sample records for the topic "organic polymers show" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


361

Counting primary loops in polymer gels  

E-Print Network (OSTI)

Much of our fundamental knowledge related to polymer networks is built on an assumption of ideal end-linked network structure. Real networks invariably possess topological imperfections that negatively affect mechanical ...

Zhou, Huaxing

362

Application of Conducting Polymers in Chemical Analysis  

Science Journals Connector (OSTI)

This paper presents recent achievements in the field of analytical application of conducting polymers, most of which were published in the last five years. Based on 171 references mainly to original papers in...

Marek Trojanowicz

2003-12-01T23:59:59.000Z

363

Color optimization of conjugated-polymer/InGaN Hybrid white light emitting diodes by incomplete energy transfer  

Science Journals Connector (OSTI)

Abstract By using the wavelength conversion method, white light emitting diodes (WLEDs) were produced by applying mixtures of polysiloxane and fluorescent polymers on InGaN based light emitting diodes. UV curable organic–inorganic hybrid materials with high refractive index (1.561), compromised optical, thermal and mechanical properties was used as encapsulants. Red light emitting fluorescent FABD polymer (with 9,9-dioctylfluorene (F), anthracene (A) and 2,1,3-benzothiadiazole (B), and 4,7-bis(2-thienyl)-2,1,3-benzothiadiazole (D) repeating units) and green light emitting fluorescent FAB polymer were used as wavelength converters. The encapsulant/fluorescent polymer mixture and InGaN produce the white light by incomplete energy transfer mechanism. \\{WLEDs\\} with high color rendering index (CRI, about 93), and tunable correlated color temperature (CCT) properties can be produced by controlling the composition and chemical structures of encapsulating polymer and fluorescent polymer in hybrid materials, offering cool-white and neutral-white LEDs.

Chi-Jung Chang; Chun-Feng Lai; P. Madhusudhana Reddy; Yung-Lin Chen; Wei-Yung Chiou; Shinn-Jen Chang

2014-01-01T23:59:59.000Z

364

Tuning the Morphology and Performance of Low Bandgap Polymer: Fullerene Heterojunctions via Solvent Annealing in Selective Solvents  

SciTech Connect

Low bandgap polymer (LBG):fullerene mixtures are some of the most promising organic photovoltaic active layers. Unfortunately, there are no post-deposition treatments available to rationally improve the morphology and performance of as-cast LBG:fullerene OPV active layers, where thermal annealing usually fails. Therefore, there is a glaring need to develop postdeposition methods to guide the morphology of LBG:fullerene bulk heterojunctions towards targeted structures and performance. In this paper, the structural evolution of PCPDTBT:PCBM mixtures with solvent annealing (SA) is examined, focusing on the effect of solvent quality of the fullerene and polymer in the annealing vapor on morphological evolution and device performance. The results indicate that exposure of this active layer to the solvent vapor controls the ordering of PCPDTBT and PCBM phase separation very effectively, presumably by inducing component mobility as the solvent plasticizes the mixture. These results also unexpectedly indicate that solvent annealing in a selective solvent provides a method to invert the morphology of the LBG:fullerene mixture from a polymer aggregate dispersed in a polymer:fullerene matrix to fullerene aggregates dispersed in a polymer:fullerene matrix. The judicious choice of solvent vapor, therefore, provides a unique method to exquisitely control and optimize the morphology of LBG conjugated polymer/fullerene mixtures.

Chen, Huipeng [ORNL; Hsiao, Yu-Che [ORNL; Hu, Bin [ORNL; Dadmun, Mark D [ORNL

2014-01-01T23:59:59.000Z

365

Organic bulk heterojunction solar cells using poly,,2,5-bis,,3-tetradecyllthiophen-2-yl...thieno3,2,-bthiophene...  

E-Print Network (OSTI)

. While the cost per watt of solar cell technology has steadily decreased in the past decade, an estimatedOrganic bulk heterojunction solar cells using poly,,2,5-bis,,3-tetradecyllthiophen-2-yl...thieno3 By transitioning to semicrystalline polymers, the performance of polymer-based solar cells has recently increased

McGehee, Michael

366

Probing Organic Transistors with Infrared Beams  

NLE Websites -- All DOE Office Websites (Extended Search)

Probing Organic Transistors with Probing Organic Transistors with Infrared Beams Probing Organic Transistors with Infrared Beams Print Wednesday, 26 July 2006 00:00 Silicon-based transistors are well-understood, basic components of contemporary electronic technology. In contrast, there is growing need for the development of electronic devices based on organic polymer materials. Organic field-effect transistors (FETs) are ideal for special applications that require large areas, light weight, and structural flexibility. They also have the advantage of being easy to mass-produce at very low cost. However, even though this class of devices is finding a growing number of applications, electronic processes in organic materials are still not well understood. A group of researchers from the University of California and the ALS has succeeded in probing the intrinsic electronic properties of the charge carriers in organic FETs using infrared spectromicroscopy. The results of their study could help in the future development of sensors, large-area displays, and other plastic electronic components.

367

Poisson Bracket Formulation of Nematic Polymer Dynamics  

E-Print Network (OSTI)

We formulate the dynamical theory of nematic polymers, starting from a microscopic Poisson bracket approach. We find that the Poisson bracket between the nematic director and momentum depends on the (Maier-Saupe) order parameter of the nematic phase. We use this to derive reactive couplings of the nematic director to the strain rates. Additionally, we find that local dynamics breaks down as the polymers begin to overlap. We offer a physical picture for both results.

Randall D. Kamien

1999-06-22T23:59:59.000Z

368

Use of Preventative and Therapeutic Drugs in Show Market Animals  

E-Print Network (OSTI)

Various preventive and therapeutic medicines may be used for disease management in show mar- ket livestock and poultry. These include vaccines and bacterins, antibiotics and antibacterials, para- siticides and corticosteroids. Exhibitors of show ani.... These instructions are to be followed precisely. L-2335 2-01 Use of Preventive and Therapeutic Drugs in Show Market Animals F.C. Faries, Jr. Associate Professor and Extension Program Leader for Veterinary Medicine The Texas A&M University System Testing The Food...

Faries Jr., Floron C.

2001-03-12T23:59:59.000Z

369

Multidimensional Random Polymers : A Renewal Approach  

E-Print Network (OSTI)

In these lecture notes, which are based on the mini-course given at 2013 Prague School on Mathematical Statistical Physics, we discuss ballistic phase of quenched and annealed stretched polymers in random environment on ${\\mathbb Z}^d$ with an emphasis on the natural renormalized renewal structures which appear in such models. In the ballistic regime an irreducible decomposition of typical polymers leads to an effectiverandom walk reinterpretation of the latter. In the annealed casethe Ornstein-Zernike theory based on this approach paves the way to an essentially complete control on the level of local limit results and invariance principles. In the quenched case, the renewal structure maps the model of stretched polymers into an effective model of directed polymers. As a result one is able to use techniques and ideas developed in the context of directed polymers in order to address issues like strong disorder in low dimensions and weak disorder in higher dimensions. Among the topics addressed: Thermodynamics of quenched and annealed models, multi-dimensional renewal theory (under Cramer's condition), renormalization and effective random walk structure of annealed polymers, very weak disorder in dimensions $d\\geq 4$ and strong disorder in dimensions $d=1,2$.

Dmitry Ioffe

2014-11-30T23:59:59.000Z

370

Widget:ShowRefFieldsButton | Open Energy Information  

Open Energy Info (EERE)

navigation, search This widget provides supporting functionality to forms that want to capture references for specific values. Specifically, this widget creates the Show Reference...

371

Solvent polarity and nanoscale morphology in bulk heterojunction organic solar cells: A case study  

SciTech Connect

Organic bulk heterojunction solar cells were fabricated under identical experimental conditions, except by varying the solvent polarity used for spin coating the active layer components and their performance was evaluated systematically. Results showed that presence of nitrobenzene-chlorobenzene composition governs the morphology of active layer formed, which is due to the tuning of solvent polarity as well as the resulting solubility of the P3HT:PCBM blend. Trace amount of nitrobenzene favoured the formation of better organised P3HT domains, as evident from conductive AFM, tapping mode AFM and surface, and cross-sectional SEM analysis. The higher interfacial surface area thus generated produced cells with high efficiency. But, an increase in the nitrobenzene composition leads to a decrease in cell performance, which is due to the formation of an active layer with larger size polymer domain networks with poor charge separation possibility.

Thomas, Ajith [Centre for Nano-Bio-Polymer Science and Technology, Department of Physics, St. Thomas College, Pala, Kerala 686574 (India); Research and Development Centre, Bharathiar University, Coimbatore, Tamilnadu 641046 (India); Elsa Tom, Anju; Ison, V. V., E-mail: isonvv@yahoo.in, E-mail: praveen@materials.iisc.ernet.in [Centre for Nano-Bio-Polymer Science and Technology, Department of Physics, St. Thomas College, Pala, Kerala 686574 (India); Rao, Arun D.; Varman, K. Arul; Ranjith, K.; Ramamurthy, Praveen C., E-mail: isonvv@yahoo.in, E-mail: praveen@materials.iisc.ernet.in [Department of Materials Engineering, Indian Institute of Science Bangalore, Karnataka 560012 (India); Vinayakan, R. [Department of Chemistry, SVR NSS College Vazhoor, Kerala 686505 (India)

2014-03-14T23:59:59.000Z

372

Ultrafast charge separation in organic photovoltaics enhanced by charge delocalization and vibronically hot exciton dissociation  

E-Print Network (OSTI)

In organic photovoltaics, the mechanism by which free electrons and holes are generated overcoming the Coulomb attraction is a currently much debated topic. To elucidate this mechanism at a molecular level, we carried out a combined electronic structure and quantum dynamical analysis that captures the elementary events from the exciton dissociation to the free carrier generation at polymer/fullerene donor-acceptor heterojunctions. Our calculations show that experimentally observed efficient charge separations can be explained by a combination of two effects: First, the delocalization of charges which substantially reduces the Coulomb barrier, and second, the vibronically hot nature of the charge transfer state which promotes charge dissociation beyond the barrier. These effects facilitate an ultrafast charge separation even at low-band-offset heterojunctions.

Tamura, Hiroyuki

2013-01-01T23:59:59.000Z

373

Proper Use of Sulfonamides in Market Show Animals  

E-Print Network (OSTI)

When administering a drug to a show animal, the owner is responsible for ensuring that there will be no drug residues in the animal's urine when it is tested at a show. Sulfonamides are of special concern because, even when they are administered...

Faries Jr., Floron C.; Fajt, Virginia

2008-02-14T23:59:59.000Z

374

Freedom Alliance Drag Show 2010 Friday April 23, 2010  

E-Print Network (OSTI)

Freedom Alliance Drag Show 2010 Friday April 23, 2010 8:00 p.m. UC Ballroom Outside Performer in the Freedom Alliances 2010 Drag Show, all outside performers are required to: · Fill out a Performers Information Sheet (see attached). · Provide the Freedom Alliance with a copy of the performance music

Maryland, Baltimore County, University of

375

Freedom Alliance Drag Show 2010 Friday April 23, 2010  

E-Print Network (OSTI)

Freedom Alliance Drag Show 2010 Friday April 23, 2010 8:00 p.m. UC Ballroom Student Performer Alliances 2010 Drag Show, all student performers are required to: · Fill out a Performers Information Sheet (see attached). · Provide the Freedom Alliance with a copy of the performance music. The Performers

Maryland, Baltimore County, University of

376

Study Shows Significant Economic Impact from Recovery Act | Department of  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Study Shows Significant Economic Impact from Recovery Act Study Shows Significant Economic Impact from Recovery Act Study Shows Significant Economic Impact from Recovery Act A study recently released shows the $1.6 billion the Savannah River Site (SRS) received from the American Recovery and Reinvestment Act has had a positive economic impact on the adjacent five-county region. The study's findings were presented at the University of South Carolina Aiken's (USC Aiken) Convocation Center. More than 75 people attended the meeting, where presenters commended the Recovery Act for accelerating Cold War cleanup at SRS and boosting employment and business in the local community. Study Shows Significant Economic Impact from Recovery Act More Documents & Publications 2010 ARRA Newsletters 2011 ARRA Newsletters Audit Report: OAS-RA-L-11-12

377

Study Shows Significant Economic Impact from Recovery Act | Department of  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Study Shows Significant Economic Impact from Recovery Act Study Shows Significant Economic Impact from Recovery Act Study Shows Significant Economic Impact from Recovery Act A study recently released shows the $1.6 billion the Savannah River Site (SRS) received from the American Recovery and Reinvestment Act has had a positive economic impact on the adjacent five-county region. The study's findings were presented at the University of South Carolina Aiken's (USC Aiken) Convocation Center. More than 75 people attended the meeting, where presenters commended the Recovery Act for accelerating Cold War cleanup at SRS and boosting employment and business in the local community. Study Shows Significant Economic Impact from Recovery Act More Documents & Publications EA-1605: Final Environmental Assessment EIS-0220: Final Environmental Impact Statement

378

Backstage at the Daily Show | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Backstage at the Daily Show Backstage at the Daily Show Backstage at the Daily Show Addthis Description Backstage footage from Secretary Chu's appearance on the Daily Show where he discuses the green room candy dish and possible lighting considerations. Speakers Secretary Steven Chu Duration 1:32 Topic Energy Efficiency Credit Energy Department Video SECRETARY STEVEN CHU: I'm in the famous green room of the Jon Stewart show. If you look around, I have all these games: Monopoly, a Rubik's Cube, Pictureka! Now if - this is to amuse myself, but in actual fact, the most famous part of this room is this. There's enough chocolate here to put you on a high that - (chuckles) - will really get you going. This is my wife, Jean. JEAN CHU: (Chuckles.) I'm - (chuckles) - edit this out! (Begin recorded segment.)

379

ShowFlow: A practical interface for groundwater modeling  

SciTech Connect

ShowFlow was created to provide a user-friendly, intuitive environment for researchers and students who use computer modeling software. What traditionally has been a workplace available only to those familiar with command-line based computer systems is now within reach of almost anyone interested in the subject of modeling. In the case of this edition of ShowFlow, the user can easily experiment with simulations using the steady state gaussian plume groundwater pollutant transport model SSGPLUME, though ShowFlow can be rewritten to provide a similar interface for any computer model. Included in this thesis is all the source code for both the ShowFlow application for Microsoft{reg sign} Windows{trademark} and the SSGPLUME model, a User's Guide, and a Developer's Guide for converting ShowFlow to run other model programs. 18 refs., 13 figs.

Tauxe, J.D.

1990-12-01T23:59:59.000Z

380

Polymer-Nanoparticle Complexes : from Dilute Solution to Solid State  

E-Print Network (OSTI)

We report on the formation and the structural properties of supermicellar aggregates also called electrostatic complexes, made from mineral nanoparticles and polyelectrolyte-neutral block copolymers in aqueous solutions. The mineral particles put under scrutiny are ultra-fine and positively charged yttrium hydroxyacetate nanoparticles. Combining light, neutron and x-ray scattering experiments, we have characterized the sizes and the aggregation numbers of the organic-inorganic complexes. We have found that the hybrid aggregates have typical sizes in the range 100 nm and exhibit a remarkable colloidal stability with respect to ionic strength and concentration variations. Solid films with thicknesses up to several hundreds of micrometers were cast from solutions, resulting in a bulk polymer matrix in which nanoparticle clusters are dispersed and immobilized. It was found in addition that the structure of the complexes remains practically unchanged during film casting.

Jean-Francois Berret; Kazuhiko Yokota; Mikel Morvan; Ralf Schweins

2006-07-07T23:59:59.000Z

Note: This page contains sample records for the topic "organic polymers show" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


381

Polymer micromold and fabrication process  

DOE Patents (OSTI)

A mold assembly is disclosed with micro-sized features in which the hollow portion thereof is fabricated from a sacrificial mandrel which is surface treated and then coated to form an outer shell. The sacrificial mandrel is then selectively etched away leaving the outer shell as the final product. The sacrificial mandrel is fabricated by a precision lathe, for example, so that when removed by etching the inner or hollow area has diameters as small as 10`s of micros ({micro}m). Varying the inside diameter contours of the mold can be accomplished with specified ramping slopes formed on the outer surface of the sacrificial mandrel, with the inside or hollow section being, for example, 275 {micro}m in length up to 150 {micro}m in diameter within a 6 mm outside diameter (o.d.) mold assembly. The mold assembly itself can serve as a micronozzle or microneedle, and plastic parts, such as microballoons for angioplasty, polymer microparts, and microactuators, etc., may be formed within the mold assembly. 6 figs.

Lee, A.P.; Northrup, M.A.; Ahre, P.E.; Dupuy, P.C.

1997-08-19T23:59:59.000Z

382

Interfacial thermal conductance in spun-cast polymer films and polymer brushes  

E-Print Network (OSTI)

represents the length of a material of thermal conduc- tivity providing an equivalent thermal resistance inorganic materials and anharmonic polymers have potentially intriguing thermal transport behavior. The low. This requirement proves challenging for low thermal conductivity materials like amorphous polymers. The effective

Braun, Paul

383

Coupling the Alkaline-Surfactant-Polymer Technology and The Gelation Technology to Maximize Oil Production  

SciTech Connect

Gelation technologies have been developed to provide more efficient vertical sweep efficiencies for flooding naturally fractured oil reservoirs or reservoirs with different sand lenses with high permeability contrast. The field proven alkaline-surfactant-polymer technology economically recovers 15% to 25% OOIP more crude oil than waterflooding from swept pore space of an oil reservoir. However, alkaline-surfactant-polymer technology is not amenable to naturally fractured reservoirs or reservoirs with high permeability contrast zones because much of injected solution bypasses target pore space containing oil. This work investigates whether combining these two technologies could broaden applicability of alkaline-surfactant-polymer flooding into these reservoirs. Fluid-fluid interaction with different gel chemical compositions and alkaline-surfactant-polymer solution with pH values ranging from 9.2 to 12.9 have been tested. Aluminum-polyacrylamide gels are not stable to alkaline-surfactant-polymer solutions at any pH. Chromium-polyacrylamide gels with polymer to chromium ion ratios of 25 or greater were stable to alkaline-surfactant-polymer solutions if solution pH was 10.6 or less. When the polymer to chromium ion was 15 or less, chromium-polyacrylamide gels were stable to alkaline-surfactant-polymer solutions with pH values up to 12.9. Chromium-xanthan gum gels were stable to alkaline-surfactant-polymer solutions with pH values of 12.9 at the polymer to chromium ion ratios tested. Silicate-polyacrylamide, resorcinol-formaldehyde, and sulfomethylated resorcinol-formaldehyde gels were also stable to alkaline-surfactant-polymer solutions with pH values ranging from 9.2 to 12.9. Iron-polyacrylamide gels were immediately destroyed when contacted with any of the alkaline-surfactant-polymer solutions with pH values ranging from 9.2 to 12.9. Gel solutions under dynamic conditions of linear corefloods showed similar stability to alkaline-surfactant-polymer solutions as in the fluid-fluid analyses with the exception of the xanthan gum-chromium acetate gels. Aluminum-polyacrylamide flowing gels are not stable to alkaline-surfactant-polymer solutions of either pH 10.5 or 12.9, either in linear corefloods or in dual separate radial core, common manifold corefloods. Chromium acetate-polyacrylamide flowing and rigid tonguing gels are stable to subsequent alkaline-surfactant-polymer solution injection. Rigid tonguing chromium acetate-polyacrylamide gels maintained permeability reduction better than flowing chromium acetate-polyacrylamide gels. Chromium acetate gels were stable to injection of alkaline-surfactant-polymer solutions at 72 F, 125 F and 175 F in linear corefloods. Chromium acetate-polyacrylamide gels maintained diversion capability after injection of an alkaline-surfactant-polymer solution in stacked; radial coreflood with a common well bore. Chromium acetate-polyacrylamide gel used to seal fractured core maintain fracture closure if followed by an alkaline-surfactant-polymer solution. Chromium acetatexanthan gum rigid gels are not stable to subsequent alkaline-surfactant-polymer solution injection at 72, 125, and 175 F. Silicate-polyacrylamide gels are not stable with subsequent injection of either a pH 10.5 or a 12.9 alkaline-surfactant-polymer solution. Resorcinol-formaldehyde gels were stable to subsequent alkaline-surfactant-polymer solution injection. When evaluated in a dual core configuration, injected fluid flows into the core with the greatest effective permeability to the injected fluid. The same gel stability trends to subsequent alkaline-surfactant-polymer injected solution were observed. Aluminum citrate-polyacrylamide, resorcinol-formaldehyde, and the silicate-polyacrylamide gel systems did not produce significant incremental oil in linear corefloods. Both flowing and rigid tonguing chromium acetate-polyacrylamide gels and the xanthan gum-chromium acetate gel system produced incremental oil with the rigid tonguing gel producing the greatest amount. Higher oil recovery could have been due to higher differential

Malcolm Pitts; Jie Qi; Dan Wilson; Phil Dowling; David Stewart; Bill Jones

2005-12-01T23:59:59.000Z

384

Frostbite Theater - Liquid Nitrogen Experiments - Liquid Nitrogen Show!  

NLE Websites -- All DOE Office Websites (Extended Search)

Insulators! Insulators! Previous Video (Insulators!) Frostbite Theater Main Index Next Video (Superconductors!) Superconductors! Liquid Nitrogen Show! All of your favorite liquid nitrogen experiments all in one place! Flowers! Balloons! Racquetballs! Nothing is safe! Just sit back, relax, and enjoy the show! [ Show Transcript ] Announcer: Frostbite Theater presents... Cold Cuts! No baloney! Joanna and Steve: Just science! Joanna: Hi! I'm Joanna! Steve: And I'm Steve! Joanna: Usually, every couple years, Jefferson Lab hosts an Open House. This is the one time the public and come and tour our accelerator and end stations. Steve: During the 2010 Open House, our cameraman snuck into one of the ongoing cryo shows that are held throughout the day. He missed half of it. So if you want to see the entire thing, check our website to see when the

385

Commercial Products Show Potential to serve as Nuclear Material and  

NLE Websites -- All DOE Office Websites (Extended Search)

Commercial Products Show Potential to serve as Nuclear Material and Commercial Products Show Potential to serve as Nuclear Material and Activity Monitoring Technologies | National Nuclear Security Administration Our Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy Emergency Response Recapitalizing Our Infrastructure Continuing Management Reform Countering Nuclear Terrorism About Us Our Programs Our History Who We Are Our Leadership Our Locations Budget Our Operations Media Room Congressional Testimony Fact Sheets Newsletters Press Releases Speeches Events Social Media Video Gallery Photo Gallery NNSA Archive Federal Employment Apply for Our Jobs Our Jobs Working at NNSA Blog Home > NNSA Blog > Commercial Products Show Potential to serve as ... Commercial Products Show Potential to serve as Nuclear Material and

386

Commercial Products Show Potential to serve as Nuclear Material and  

National Nuclear Security Administration (NNSA)

Commercial Products Show Potential to serve as Nuclear Material and Commercial Products Show Potential to serve as Nuclear Material and Activity Monitoring Technologies | National Nuclear Security Administration Our Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy Emergency Response Recapitalizing Our Infrastructure Continuing Management Reform Countering Nuclear Terrorism About Us Our Programs Our History Who We Are Our Leadership Our Locations Budget Our Operations Media Room Congressional Testimony Fact Sheets Newsletters Press Releases Speeches Events Social Media Video Gallery Photo Gallery NNSA Archive Federal Employment Apply for Our Jobs Our Jobs Working at NNSA Blog Home > NNSA Blog > Commercial Products Show Potential to serve as ... Commercial Products Show Potential to serve as Nuclear Material and

387

New Geothermal Prospects in the Western United States Show Promise  

Energy.gov (U.S. Department of Energy (DOE))

New geothermal prospects in the western United States show promise, according to the new 2013 Annual U.S. Geothermal Power Production and Development Report, published by the Geothermal Energy Association this week.

388

Global Climate Change Assessment Report Shows Nations Not Doing...  

Open Energy Info (EERE)

Global Climate Change Assessment Report Shows Nations Not Doing Enough Home > Blogs > Dc's blog Dc's picture Submitted by Dc(107) Contributor 5 November, 2014 - 14:49 The latest...

389

Boron-Nitride Nanotubes Show Potential in Cancer Treatment |...  

NLE Websites -- All DOE Office Websites (Extended Search)

Boron-Nitride Nanotubes Show Potential in Cancer Treatment NEWPORT NEWS, VA, April 26 - A new study has shown that adding boron-nitride nanotubes to the surface of cancer cells can...

390

Annual report shows potential INL radiation doses well below...  

NLE Websites -- All DOE Office Websites (Extended Search)

Annual report shows potential INL radiation doses well below safe regulatory limits July 21, 2010 Media contact: Tim Jackson (208) 526-8484 Idaho Falls, ID The U.S. Department...

391

Pennsylvania and West Virginia show largest increases in natural...  

NLE Websites -- All DOE Office Websites (Extended Search)

Pennsylvania and West Virginia show largest increases in natural gas proved reserves U.S. natural gas proved reserves have hit an all-time high...with Pennsylvania and West...

392

Photo of the Week: the 2014 Washington Auto Show | Department...  

Energy Savers (EERE)

learn about energy and earn merit badges and patches. In this photo, a Boy Scout watches light shine on a solar panel that's powering a hydrogen fuel cell system, showing how...

393

DOE Releases New Analysis Showing Significant Advances in Electric Vehicle  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

New Analysis Showing Significant Advances in Electric New Analysis Showing Significant Advances in Electric Vehicle Deployment DOE Releases New Analysis Showing Significant Advances in Electric Vehicle Deployment February 8, 2011 - 12:00am Addthis WASHINGTON - The U.S. Department of Energy today released One Million Electric Vehicles by 2015 (pdf - 220 kb), an analysis of advances in electric vehicle deployment and progress to date in meeting President Obama's goal of putting one million electric vehicles on the road by 2015. The analysis shows that while the goal is ambitious, it is also achievable based on steps already taken as part of the Recovery Act and additional policy initiatives proposed by President Obama -- including improvements to existing consumer tax credits, programs to help cities prepare for the growing demand for electric vehicles, and strong support

394

Collapse of a semiflexible polymer in poor solvent Alberto Montesi,1,2  

E-Print Network (OSTI)

with a bead-stiff spring model with excluded volume interaction, bending stiffness, and exponentially decaying and with a phantom bead-spring chain. Finally, we show preliminary results on how steady shear flow influences. This effect leads to a swollen coil conformation for flexible polymers in good solvent. In poor solvent, con

MacKintosh, F.C.

395

Bath Institute for Complex Systems Minimal supporting subtrees for the free energy of polymers  

E-Print Network (OSTI)

. We show that, for high temperatures, the free energy is supported by a random tree of positiveBICS Bath Institute for Complex Systems Minimal supporting subtrees for the free energy of polymers on disordered trees Peter M¨orters and Marcel Ortgiese Bath Institute For Complex Systems Preprint 10/08 (2008

Burton, Geoffrey R.

396

Effect of an Interactive Surface on the Equilibrium Contact Angles in Bilayer Polymer Films  

E-Print Network (OSTI)

is the monomer volume and A/B is the interfacial force. Measurements of using the standard techniques of small, and photoemission electron microscopy (PEEM) were used to obtain the three-dimensional concentration profiles thickness. The results showed that the apparent contact angle at the polymer/air interface decreases

397

Low-cost, non-precious metal/polymer composite catalysts for fuel cells  

E-Print Network (OSTI)

will fuel cells take their place as a centerpiece of a hydrogen economy and position hydrogen as a major) activity in known-to-date non- precious metal. Fuel cell testing of the composite Figure 2 shows a hydrogenLow-cost, non-precious metal/polymer composite catalysts for fuel cells R. Bashyam and P. Zelenay 1

398

Enlightening lightning! Producing and directing a multimedia planetarium show  

E-Print Network (OSTI)

is middle school aged children. The goal of the show is to teach lightning safety and lightning facts in an immersive environment. Through the use of video, an animated character, and a meteorologist, the curriculum is presented to the audience. I...! by starting with outlining the curriculum and finishing with putting it all together at the planetarium. The goal of this paper is to discuss the techniques and organizational methods used to manage a diverse group and produce a multimedia show. iv...

Fowler, Sarah Marie

2005-02-17T23:59:59.000Z

399

Method of making metal-polymer composite catalysts  

DOE Patents (OSTI)

A metal-polymer-carbon composite catalyst for use as a cathode electrocatalyst in fuel cells. The catalyst includes a heteroatomic polymer; a transition metal linked to the heteroatomic polymer by one of nitrogen, sulfur, and phosphorus, and a recast ionomer dispersed throughout the heteroatomic polymer-carbon composite. The method includes forming a heteroatomic polymer-carbon composite and loading the transition metal onto the composite. The invention also provides a method of making a membrane electrode assembly for a fuel cell that includes the metal-polymer-carbon composite catalyst.

Zelena, Piotr (Los Alamos, NM); Bashyam, Rajesh (Los Alamos, NM)

2009-06-23T23:59:59.000Z

400

The morphology of polymer modified asphalt and its relationship to rheology and durability  

E-Print Network (OSTI)

-22.......................... 23 2-6 Koch and Alon DSR Maps for Unaged and SAFT Aged Binders ............. 24 2-7 Koch and Alon DSR Maps for PAV*16 and PAV*32 Aged Binders ....... 25 2-8 DSR Function Ratio Divided by Polymer Peak Height... (21). 11 0 1 2 3 4 5 6 4 8 12 16 20 Unaged SAFT SAFT + PAV* 16H SAFT + PAV* 32H St re ss (M Pa ) Elongation Ratio (L/L0) I-35 SBS (Original Binder) Asphalt Modulus Asphalt-Polymer Modulus FIGURE 1-1 A Force Ductility Plot Showing the Asphalt...

Kraus, Zachary Rothman

2008-10-10T23:59:59.000Z

Note: This page contains sample records for the topic "organic polymers show" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

Polyethylene-supported polyvinylidene fluoride–cellulose acetate butyrate blended polymer electrolyte for lithium ion battery  

Science Journals Connector (OSTI)

The polyethylene (PE)-supported polymer membranes based on the blended polyvinylidene fluoride (PVDF) and cellulose acetate butyrate (CAB) are prepared for gel polymer electrolyte (GPE) of lithium ion battery. The performances of the prepared membranes and the resulting \\{GPEs\\} are investigated by scanning electron microscopy, electrochemical impedance spectroscopy, linear potential sweep, and charge–discharge test. The effect of the ratio of PVDF to CAB on the performance of the prepared membranes is considered. It is found that the GPE based on the blended polymer with PVDF:CAB = 2:1 (in weight) has the largest ionic conductivity (2.48 × 10?3 S cm?1) and shows good compatibility with anode and cathode of lithium ion battery. The LiCoO2/graphite battery using this GPE exhibits superior cyclic stability at room temperature, storage performance at elevated temperature, and rate performance.

Jiansheng Liu; Weishan Li; Xiaoxi Zuo; Shengqi Liu; Zhao Li

2013-01-01T23:59:59.000Z

402

Multiple glass transitions in star polymer mixtures: Insights from theory and simulations  

E-Print Network (OSTI)

The glass transition in binary mixtures of star polymers is studied by mode coupling theory and extensive molecular dynamics computer simulations. In particular, we have explored vitrification in the parameter space of size asymmetry $\\delta$ and concentration $\\rho_2$ of the small star polymers at fixed concentration of the large ones. Depending on the choice of parameters, three different glassy states are identified: a single glass of big polymers at low $\\delta$ and low $\\rho_2$, a double glass at high $\\delta$ and low $\\rho_2$, and a novel double glass at high $\\rho_2$ and high $\\delta$ which is characterized by a strong localization of the small particles. At low $\\delta$ and high $\\rho_2$ there is a competition between vitrification and phase separation. Centered in the $(\\delta, \\rho_2)$-plane, a liquid lake shows up revealing reentrant glass formation. We compare the behavior of the dynamical density correlators with the predictions of the theory and find remarkable agreement between the two.

Christian Mayer; Francesco Sciortino; Christos N. Likos; Piero Tartaglia; Hartmut Loewen; Emanuela Zaccarelli

2008-11-10T23:59:59.000Z

403

Polymer quenched prealloyed metal powder  

DOE Patents (OSTI)

A powder metallurgical process of preparing a sheet from a powder having an intermetallic alloy composition such as an iron, nickel or titanium aluminide. The sheet can be manufactured into electrical resistance heating elements having improved room temperature ductility, electrical resistivity, cyclic fatigue resistance, high temperature oxidation resistance, low and high temperature strength, and/or resistance to high temperature sagging. The iron aluminide has an entirely ferritic microstructure which is free of austenite and can include, in weight %, 4 to 32% Al, and optional additions such as .ltoreq.1% Cr, .gtoreq.0.05% Zr .ltoreq.2% Ti, .ltoreq.2% Mo, .ltoreq.1% Ni, .ltoreq.0.75% C, .ltoreq.0.1% B, .ltoreq.1% submicron oxide particles and/or electrically insulating or electrically conductive covalent ceramic particles, .ltoreq.1% rare earth metal, and/or .ltoreq.3 % Cu. The process includes forming a non-densified metal sheet by consolidating a powder having an intermetallic alloy composition such as by roll compaction, tape casting or plasma spraying, forming a cold rolled sheet by cold rolling the non-densified metal sheet so as to increase the density and reduce the thickness thereof and annealing the cold rolled sheet. The powder can be a water, polymer or gas atomized powder which is subjecting to sieving and/or blending with a binder prior to the consolidation step. After the consolidation step, the sheet can be partially sintered. The cold rolling and/or annealing steps can be repeated to achieve the desired sheet thickness and properties. The annealing can be carried out in a vacuum furnace with a vacuum or inert atmosphere. During final annealing, the cold rolled sheet recrystallizes to an average grain size of about 10 to 30 .mu.m. Final stress relief annealing can be carried out in the B2 phase temperature range.

Hajaligol, Mohammad R. (Midlothian, VA); Fleischhauer, Grier (Midlothian, VA); German, Randall M. (State College, PA)

2001-01-01T23:59:59.000Z

404

Moniz: Tesla Repayment Shows the Strength of Energy Department's Overall  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Moniz: Tesla Repayment Shows the Strength of Energy Department's Moniz: Tesla Repayment Shows the Strength of Energy Department's Overall Loan Portfolio Moniz: Tesla Repayment Shows the Strength of Energy Department's Overall Loan Portfolio May 22, 2013 - 4:24pm Addthis News Media Contact (202) 586-4940 WASHINGTON -- Today, Tesla Motors repaid the entire remaining balance on a $465 million loan from the Department of Energy nine years earlier than originally required. U.S. Energy Secretary Ernest Moniz made the following statement: "When you're talking about cutting-edge clean energy technologies, not every investment will succeed -- but today's repayment is the latest indication that the Energy Department's portfolio of more than 30 loans is delivering big results for the American economy while costing far less than anticipated.

405

Energy Innovation Hub Report Shows Philadelphia-area Building Retrofits  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Report Shows Philadelphia-area Building Report Shows Philadelphia-area Building Retrofits Could Support 23,500 Jobs Energy Innovation Hub Report Shows Philadelphia-area Building Retrofits Could Support 23,500 Jobs November 10, 2011 - 10:36am Addthis This is the Greater Philadelphia Innovation Cluster located at the Philadelphia Navy Yard, which has 270 buildings that consortium members can use to conduct energy efficiency experiments. The Energy Efficiency Buildings Hub is one of the U.S. Department of Energy’s research centers called Energy Innovation Hubs. | Photo courtesy of EEB Hub This is the Greater Philadelphia Innovation Cluster located at the Philadelphia Navy Yard, which has 270 buildings that consortium members can use to conduct energy efficiency experiments. The Energy Efficiency

406

Nebraska shows potential to produce biofuel crops | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Nebraska shows potential to produce biofuel crops Nebraska shows potential to produce biofuel crops Nebraska shows potential to produce biofuel crops December 9, 2009 - 11:12am Addthis Joshua DeLung What are the key facts? Utilizing sites in Nevada that are currently used as buffers around roads for biofuel production instead could meet up to 22 percent of the state's energy requirements. That's 11 times the energy the state currently produces from biomass. Nebraska is known for its rolling cornfields in America's heartland, and agriculture is so thick in the state that people there can smell the fresh produce in the air. Many more in the U.S. might end up tasting the hearty vegetables as well. But one concern about new technologies that use crops for fuel is that those crops, and the land on which they're grown,

407

Consumer Electronics Show 2013 Highlights Sustainable Energy Technology |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Consumer Electronics Show 2013 Highlights Sustainable Energy Consumer Electronics Show 2013 Highlights Sustainable Energy Technology Consumer Electronics Show 2013 Highlights Sustainable Energy Technology January 18, 2013 - 4:52pm Addthis Excited attendees flood into the Central Hall exhibits to see the latest and greatest in technology at the 2013 International CES. | 2013 International CES Excited attendees flood into the Central Hall exhibits to see the latest and greatest in technology at the 2013 International CES. | 2013 International CES Erik Hyrkas Erik Hyrkas Media Relations Specialist, Office of Energy Efficiency & Renewable Energy What does this mean for me? Watch for the new sustainable technologies displayed at CES this year. Energy savings aren't all about efficient heating and cooling these days.

408

State Home Oil Weatherization (SHOW) Program | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Home Oil Weatherization (SHOW) Program Home Oil Weatherization (SHOW) Program State Home Oil Weatherization (SHOW) Program < Back Eligibility Multi-Family Residential Residential Savings Category Heating & Cooling Commercial Heating & Cooling Heating Home Weatherization Commercial Weatherization Sealing Your Home Design & Remodeling Windows, Doors, & Skylights Ventilation Manufacturing Maximum Rebate $500/household Program Info State Oregon Program Type State Rebate Program Rebate Amount Blower-door test - 100% of the cost up to $100. All other technologies are 25% of the total cost, up to $150 or $500, depending on the upgrade. Provider Oregon Department of Energy Oregon homeowners and renters who heat with oil, wood, propane, kerosene, or butane are eligible for home weatherization rebates of up to $500. A

409

Biological Monitoring at Amchitka Appears to Show Impacts from Fukushima  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Biological Monitoring at Amchitka Appears to Show Impacts from Biological Monitoring at Amchitka Appears to Show Impacts from Fukushima Dai-ichi Incident Biological Monitoring at Amchitka Appears to Show Impacts from Fukushima Dai-ichi Incident April 12, 2013 - 3:09pm Addthis An LM scientist points to star reindeer lichen on Adak Island, Alaska. An LM scientist points to star reindeer lichen on Adak Island, Alaska. What does this project do? Goal 1. Protect human health and the environment The U.S. Department of Energy Office Legacy Management (LM) has a long-term stewardship mission to protect human health and the environment from the legacy of underground nuclear testing conducted at Amchitka Island, Alaska, from 1965 to 1971. As part of its mission, LM collected biological and seawater samples from Amchitka and Adak Islands, for background comparison,

410

Consumer Electronics Show 2013 Highlights Sustainable Energy Technology |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Consumer Electronics Show 2013 Highlights Sustainable Energy Consumer Electronics Show 2013 Highlights Sustainable Energy Technology Consumer Electronics Show 2013 Highlights Sustainable Energy Technology January 18, 2013 - 4:52pm Addthis Excited attendees flood into the Central Hall exhibits to see the latest and greatest in technology at the 2013 International CES. | 2013 International CES Excited attendees flood into the Central Hall exhibits to see the latest and greatest in technology at the 2013 International CES. | 2013 International CES Erik Hyrkas Erik Hyrkas Media Relations Specialist, Office of Energy Efficiency & Renewable Energy What does this mean for me? Watch for the new sustainable technologies displayed at CES this year. Energy savings aren't all about efficient heating and cooling these days.

411

Nebraska shows potential to produce biofuel crops | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Nebraska shows potential to produce biofuel crops Nebraska shows potential to produce biofuel crops Nebraska shows potential to produce biofuel crops December 9, 2009 - 11:12am Addthis Joshua DeLung What are the key facts? Utilizing sites in Nevada that are currently used as buffers around roads for biofuel production instead could meet up to 22 percent of the state's energy requirements. That's 11 times the energy the state currently produces from biomass. Nebraska is known for its rolling cornfields in America's heartland, and agriculture is so thick in the state that people there can smell the fresh produce in the air. Many more in the U.S. might end up tasting the hearty vegetables as well. But one concern about new technologies that use crops for fuel is that those crops, and the land on which they're grown,

412

Lumenhaus Shows Off Solar in Times Square | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Lumenhaus Shows Off Solar in Times Square Lumenhaus Shows Off Solar in Times Square Lumenhaus Shows Off Solar in Times Square February 1, 2010 - 10:00am Addthis Photo by Kelly Shimoda Photo by Kelly Shimoda Joshua DeLung How can I participate? The next Solar Decathlon will be held Sept. 23-Oct. 2, 2011, at the National Mall's West Potomac Park in Washington, D.C. Virginia Tech's Lumenhaus - a net-zero energy, solar-powered, 650-square-foot home - made a stop in New York on its tour, right in the middle of Times Square. The house was previously featured at the U.S. Department of Energy's Solar Decathlon in October, and the team will head to Madrid in June for Solar Decathlon Europe as the only U.S. team to participate in both competitions. While in Times Square, the team and the house were featured on "Good

413

Small Businesses in Arkansas Show How America Competes | Department of  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Businesses in Arkansas Show How America Competes Businesses in Arkansas Show How America Competes Small Businesses in Arkansas Show How America Competes May 24, 2012 - 5:58pm Addthis Deputy Secretary Poneman tours Arkansas Power Electronics International as part of National Small Business Week. | Energy Department photo by Teryn Norris. Deputy Secretary Poneman tours Arkansas Power Electronics International as part of National Small Business Week. | Energy Department photo by Teryn Norris. Teryn Norris Special Assistant for Public Engagement, Office of the Secretary What are the key facts? Deputy Secretary Poneman announced $11 million in innovative research and technology grants of up to $150,000 to nearly 70 small businesses nationwide. America's economic leadership depends on small businesses, which create

414

New NASA Visualizations Show Two Futures of Climate Change  

NLE Websites -- All DOE Office Websites (Extended Search)

NASA Visualizations Show Two Futures of Climate Change Print E-mail NASA Visualizations Show Two Futures of Climate Change Print E-mail Thursday, July 25, 2013 By Tara Failey Climate Scenarios Project Temperature and Precipitation in the U.S. through 2100 Curious to 'see' how different greenhouse gas emission scenarios are expected to impact the United States? Two recently released animated NASA visualizations developed to support the forthcoming third US National Climate Assessment show projections of Earth's temperature and precipitation patterns from today through the year 2100-revealing how "low" versus "high" emission scenarios would impact the planet's climate. "These visualizations communicate a picture of the impacts of climate change in a way that words do not," said Allison Leidner, Ph.D., a scientist who coordinates NASA's involvement in the National Climate Assessment. "When I look at the scenarios for future temperature and precipitation, I really see how dramatically our Nation's climate could change."

415

Argonne CNM News: Time-Resolved Measurements Show Colloidal Nanoplatelets  

NLE Websites -- All DOE Office Websites (Extended Search)

Time-Resolved Measurements Show Colloidal Nanoplatelets Act Like Quantum Wells Time-Resolved Measurements Show Colloidal Nanoplatelets Act Like Quantum Wells TEM image of CdSe nanoplatelets Schematic and transmission electron microscope (TEM) image of CdSe nanoplatelets with a thickness of 5 monolayers. The relaxation of high-energy carriers (electrons and holes) in colloidal nanoplatelets have been measured by researchers in the Nanophotonics Group at the Center for Nanoscale Materials, working with colleagues at the University of Chicago. The measurements show that the carriers behave like carriers in quantum wells. Quantum wells have found widespread application in optoelectronics, and the new results suggest that colloidal nanoplatelets should find similar applications, with the added advantage that they can be produced at low cost and in large quantities.

416

Achieving High Performance Polymer Tandem Solar Cells via Novel Materials Design  

E-Print Network (OSTI)

polymer solar cell could be a viable technology for spacetechnology must utilize the uniqueness of polymer solar cells.

Dou, Letian

2014-01-01T23:59:59.000Z

417

A Look Inside the Detroit Auto Show | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

A Look Inside the Detroit Auto Show A Look Inside the Detroit Auto Show A Look Inside the Detroit Auto Show January 12, 2011 - 1:15pm Addthis Kerry Duggan Waking up at 4:30AM is not my idea of fun. But after I witnessed the 6:30AM unveiling of the shiny new Porsche 918 RSR Hybrid at the North American International Auto Show, I got over it. To those who know cars, its lineage is in the #22 Porsche 917 race car, winner of the LeMans in 1971. With a top speed of 140 mph, the new 918 RSR combines the power of a 563-horsepower V-8 engine and a dual inertial flywheel system to produce a total 767-horsepower. On the efficiency side, a Kinetic Energy Recovery System (KERS) allows the two 75-kW flywheels to capture wasted energy when the brakes are applied. The Porsche president said that their goal is to achieve high fuel efficiency in extreme driving

418

Figures of the World Healthcare Organisation show that stroke  

E-Print Network (OSTI)

Figures of the World Healthcare Organisation show that stroke is currently the leading cause disabilities following a stroke, the economic burden and shortage of rehabilitation therapists are also developed a robotic exoskeleton system that meets the requirements of effective post-stroke upper

419

Motherless Rats Show Deficits in Maternal Behavior Towards  

E-Print Network (OSTI)

Motherless Rats Show Deficits in Maternal Behavior Towards Fostered Pups Daniela J. Palombo1.fleming@utoronto.ca ABSTRACT: Complete maternal deprivation in rats, through artificial rearing (AR), produces deficits 52: 142�148, 2010. Keywords: rat; artificial rearing; early experience; development; maternal

Sokolowski, Marla

420

A Look Inside the Detroit Auto Show | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

A Look Inside the Detroit Auto Show A Look Inside the Detroit Auto Show A Look Inside the Detroit Auto Show January 12, 2011 - 1:15pm Addthis Kerry Duggan Waking up at 4:30AM is not my idea of fun. But after I witnessed the 6:30AM unveiling of the shiny new Porsche 918 RSR Hybrid at the North American International Auto Show, I got over it. To those who know cars, its lineage is in the #22 Porsche 917 race car, winner of the LeMans in 1971. With a top speed of 140 mph, the new 918 RSR combines the power of a 563-horsepower V-8 engine and a dual inertial flywheel system to produce a total 767-horsepower. On the efficiency side, a Kinetic Energy Recovery System (KERS) allows the two 75-kW flywheels to capture wasted energy when the brakes are applied. The Porsche president said that their goal is to achieve high fuel efficiency in extreme driving

Note: This page contains sample records for the topic "organic polymers show" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


421

Modeling Cold Start in a Polymer-Electrolyte Fuel Cell  

E-Print Network (OSTI)

Boundary conditions used for fuel—cell simulations. 3.12to the Problem of Cold Start 1.1 Polymer—Electrolyte Fuelin Polymer Electrolyte Fuel Cells — II. Parametric Study,”

Balliet, Ryan

2010-01-01T23:59:59.000Z

422

Molecular Structures of Polymer/Sulfur Composites for Lithium...  

NLE Websites -- All DOE Office Websites (Extended Search)

Structures of PolymerSulfur Composites for Lithium-Sulfur Batteries with Long Cycle Life. Molecular Structures of PolymerSulfur Composites for Lithium-Sulfur Batteries with Long...

423

Phase selectively soluble polymer supports to facilitate homogeneous catalysis  

E-Print Network (OSTI)

Soluble polymers that have phase selective solubility are useful in synthesis because they simplify purification and separation. Such selectively soluble polymers simplify catalyst, reagent, and product recovery and enable the use of Green chemistry...

Ortiz-Acosta, Denisse

2009-05-15T23:59:59.000Z

424

Synthesis and Characterization of Polymer Nanocomposites for Energy Applications  

E-Print Network (OSTI)

Polymer nanocomposites are used in a variety of applications due to their good mechanical properties. Specifically, better performance of lithium ion batteries and thermal interface material can be obtained by using conductive materials and polymer...

Park, Wonchang

2011-10-21T23:59:59.000Z

425

Polymer-coated iron oxide nanoparticles for medical imaging  

E-Print Network (OSTI)

One of the most versatile and safe materials used in medicine are polymer-coated iron oxide nanoparticles. This dissertation describes several formulations for in vivo imaging applications. The paramagnetic polymer-coated ...

Chen, Suelin, Ph.D. Massachusetts Institute of Technology

2010-01-01T23:59:59.000Z

426

Tailoring the Thermoelectric Behavior of Electrically Conductive Polymer Composites  

E-Print Network (OSTI)

fabrication temperatures. These concerns have led research efforts into electrically conductive polymer composites prepared in ambient conditions from aqueous solutions. By combining polymer latex with carbon nanotubes (CNT), electrical conductivity can...

Moriarty, Gregory P.

2013-05-21T23:59:59.000Z

427

Processing and thermal properties of molecularly oriented polymers  

E-Print Network (OSTI)

High molecular weight polymers that are linear in molecular construction can be oriented such that some of their physical properties in the oriented direction are enhanced. For over 50 years polymer orientation and processing ...

Skow, Erik (Erik Dean)

2007-01-01T23:59:59.000Z

428

Switchable window based on electrochromic polymers Chunye Xu,a)  

E-Print Network (OSTI)

Switchable window based on electrochromic polymers Chunye Xu,a) Lu Liu, Susan E. Legenski, Dai Ning March 2004) A large contrast ratio (> 60%) and rapid switching (0.3­1 s) electrochromic (EC) polymer

Taya, Minoru

429

An overview of molten polymer drawing instabilities Yves Demay1  

E-Print Network (OSTI)

dissipation in a screw/barrel device and then forced in a spinning pack consisting of a metal plaque of processes for polymer film production: · In the cast-film process, the polymer is melted in an extruder

Paris-Sud XI, Université de

430

Biology and polymer physics at the single–molecule level  

Science Journals Connector (OSTI)

...Olmsted Biology and polymer physics at the single-molecule level Steven Chu Department of Physics...be hidden from view can be clearly seen in single-molecule experiments. single-molecule biology|polymer dynamics|biological physics...

2003-01-01T23:59:59.000Z

431

Aliphatic Polyester Block Polymers: Renewable, Degradable, and Sustainable  

Science Journals Connector (OSTI)

Aliphatic Polyester Block Polymers: Renewable, Degradable, and Sustainable ... Yet, such polymers are “challenged” with respect to sustainability. ... The Earth harbors finite carbon-based feedstocks that are being rapidly depleted by our increasing energy demand. ...

Marc A. Hillmyer; William B. Tolman

2014-05-22T23:59:59.000Z

432

Polymer blends for use in photoelectrochemical cells for conversion of solar energy to electricity  

DOE Patents (OSTI)

There is disclosed a polymer blend of a highly conductive polymer and a solid polymer electrolyte that is designed to achieve better charge transfer across the conductive film/polymer electrolyte interface of the electrochemical photovoltaic cell. The highly conductive polymer is preferably polypyrrole or poly-N-p-nitrophenylpyrrole and the solid polymer electrolyte is preferably polyethylene oxide or polypropylene oxide.

Skotheim, T.

1984-09-28T23:59:59.000Z

433

Polymer blends for use in photoelectrochemical cells for conversion of solar energy to electricity  

DOE Patents (OSTI)

There is disclosed a polymer blend of a highly conductive polymer and a solid polymer electrolyte that is designed to achieve better charge transfer across the conductive film/polymer electrolyte interface of the electrochemical photovoltaic cell. The highly conductive polymer is preferably polypyrrole or poly-N-p-nitrophenylpyrrole and the solid polymer electrolyte is preferably polyethylene oxide or polypropylene oxide.

Skotheim, Terje (East Patchogue, NY)

1986-01-01T23:59:59.000Z

434

Polymer Technology Corp | Open Energy Information  

Open Energy Info (EERE)

Polymer Technology Corp Polymer Technology Corp Jump to: navigation, search Name Polymer Technology Corp Place Menomonie, Wisconsin Zip 54751 Sector Services Product A provider of contract engineering services Coordinates 44.8805°, -91.929559° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":44.8805,"lon":-91.929559,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

435

Adjustable flow rate controller for polymer solutions  

DOE Patents (OSTI)

An adjustable device for controlling the flow rate of polymer solutions which results in only little shearing of the polymer molecules, said device comprising an inlet manifold, an outlet manifold, a plurality of tubes capable of providing communication between said inlet and outlet manifolds, said tubes each having an internal diameter that is smaller than that of the inlet manifold and large enough to insure that viscosity of the polymer solution passing through each said tube will not be reduced more than about 25 percent, and a valve associated with each tube, said valve being capable of opening or closing communication in that tube between the inlet and outlet manifolds, each said valve when fully open having a diameter that is substantially at least as great as that of the tube with which it is associated.

Jackson, Kenneth M. (Bartlesville, OK)

1981-01-01T23:59:59.000Z

436

Two Dimensional Polymer That Generates Nitric Oxide.  

DOE Patents (OSTI)

A polymeric composition that generates nitric oxide and a process for rendering the surface of a substrate nonthrombogenic by applying a coating of the polymeric composition to the substrate are disclosed. The composition comprises: (1) a crosslinked chemical combination of (i) a polymer having amino group-containing side chains along a backbone forming the polymer, and (ii) a crosslinking agent containing functional groups capable of reacting with the amino groups; and (2) a plurality of nitric oxide generating functional groups associated with the crosslinked chemical combination. Once exposed to a physiological environment, the coating generates nitric oxide thereby inhibiting platelet aggregation. In one embodiment, the nitric oxide generating functional groups are provided by a nitrated compound (e.g., nitrocellulose) imbedded in the polymeric composition. In another embodiment, the nitric oxide generating functional groups comprise N2O2- groups covalently bonded to amino groups on the polymer.

McDonald, William F. (Utica, OH); Koren, Amy B. (Lansing, MI)

2005-10-04T23:59:59.000Z

437

Stretchable polymer-based electronic device  

DOE Patents (OSTI)

A stretchable electronic circuit or electronic device and a polymer-based process to produce a circuit or electronic device containing a stretchable conducting circuit. The stretchable electronic apparatus has a central longitudinal axis and the apparatus is stretchable in a longitudinal direction generally aligned with the central longitudinal axis. The apparatus comprises a stretchable polymer body and at least one circuit line operatively connected to the stretchable polymer body. The circuit line extends in the longitudinal direction and has a longitudinal component that extends in the longitudinal direction and has an offset component that is at an angle to the longitudinal direction. The longitudinal component and the offset component allow the apparatus to stretch in the longitudinal direction while maintaining the integrity of the circuit line.

Maghribi, Mariam N. (Livermore, CA); Krulevitch, Peter A. (Pleasanton, CA); Davidson, James Courtney (Livermore, CA); Wilson, Thomas S. (Castro Valley, CA); Hamilton, Julie K. (Tracy, CA); Benett, William J. (Livermore, CA); Tovar, Armando R. (San Antonio, TX)

2008-02-26T23:59:59.000Z

438

Thermal diffusivity measurement system applied to polymers  

Science Journals Connector (OSTI)

In the search for cleaner energy sources the improvement of the efficiency of the actual ones appears as a primary objective. In this way thermoelectric materials which are able to convert wasted heat into electricity are reveal as an interesting way to improve efficiency of car engines for example. Cost-effective energy harvesting from thermoelectric devices requires materials with high electrical conductivities and Seebeck coefficient but low thermal conductivity. Conductive polymers can fulfil these conditions if they are doped appropriately. One of the most promising polymers is Polyaniline. In this work the thermal conductivity of the polyaniline and mixtures of polyaniline with nanoclays has been studied using a new experimental set-up developed in the lab. The novel system is based on the steady-state method and it is used to obtain the thermal diffusivity of the polymers and the nanocomposites.

2012-01-01T23:59:59.000Z

439

Office of Energy Efficiency and Renewable Energy Organization Chart  

Office of Energy Efficiency and Renewable Energy (EERE)

This chart shows how the U.S. Department of Energy's Office of Energy Efficiency and Renewable Energy is organized.

440

Novel Ceramic-Polymer Composite Membranes for the Separation of Hazardous Liquid Waste  

SciTech Connect

The present project was conceived to address the need for robust yet selective membranes suitable for operating in harsh ph, solvent, and temperature environments. An important goal of the project was to develop a membrane chemical modification technology that would allow one to tailor-design membranes for targeted separation tasks. The method developed in the present study is based on the process of surface graft polymerization. Using essentially the same base technology of surface modification the research was aimed at demonstrating that improved membranes can be designed for both pervaporation separation and ultrafiltration. In the case of pervaporation, the present study was the first to demonstrate that pervaporation can be achieved with ceramic support membranes modified with an essentially molecular layer of terminally anchored polymer chains. The main advantage of the above approach, relative to other proposed membranes, is that the separating polymer layer is covalently attached to the ceramic support. Therefore, such membranes have a potential use in organic-organic separations where the polymer can swell significantly yet membrane robustness is maintained due to the chemical linkage of the chains to be inorganic support. The above membrane technology was also useful in developing fouling resistant ultrafiltration membranes. The prototype membrane developed in the project was evaluated for the treatment of oil-in-water microemulsions, demonstrating lack of irreversible fouling common with commercial membranes.

Yoram Cohen

2001-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "organic polymers show" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


441

Solid polymer electrolyte from phosphorylated chitosan  

SciTech Connect

Recently, the need of secondary battery application continues to increase. The secondary battery which using a liquid electrolyte was indicated had some weakness. A solid polymer electrolyte is an alternative electrolytes membrane which developed in order to replace the liquid electrolyte type. In the present study, the effect of phosphorylation on to polymer electrolyte membrane which synthesized from chitosan and lithium perchlorate salts was investigated. The effect of the component’s composition respectively on the properties of polymer electrolyte, was carried out by analyzed of it’s characterization such as functional groups, ion conductivity, and thermal properties. The mechanical properties i.e tensile resistance and the morphology structure of membrane surface were determined. The phosphorylation processing of polymer electrolyte membrane of chitosan and lithium perchlorate was conducted by immersing with phosphoric acid for 2 hours, and then irradiated on a microwave for 60 seconds. The degree of deacetylation of chitosan derived from shrimp shells was obtained around 75.4%. Relative molecular mass of chitosan was obtained by viscometry method is 796,792 g/mol. The ionic conductivity of chitosan membrane was increase from 6.33 × 10{sup ?6} S/cm up to 6.01 × 10{sup ?4} S/cm after adding by 15 % solution of lithium perchlorate. After phosphorylation, the ionic conductivity of phosphorylated lithium chitosan membrane was observed 1.37 × 10{sup ?3} S/cm, while the tensile resistance of 40.2 MPa with a better thermal resistance. On the strength of electrolyte membrane properties, this polymer electrolyte membrane was suggested had one potential used for polymer electrolyte in field of lithium battery applications.

Fauzi, Iqbal, E-mail: arcana@chem.itb.ac.id; Arcana, I Made, E-mail: arcana@chem.itb.ac.id [Inorganic and Physical Chemistry Research Groups, Faculty of Mathematics and Natural Sciences, Institut Teknologi Bandung, Jl. Ganesha 10, Bandung 40132 (Indonesia)

2014-03-24T23:59:59.000Z

442

Polymer-electrolyte membrane, electrochemical fuel cell, and related method  

DOE Patents (OSTI)

A polymer-electrolyte membrane is presented. The polymer-electrolyte membrane comprises an acid-functional polymer, and an additive incorporated in at least a portion of the membrane. The additive comprises a fluorinated cycloaliphatic additive, a hydrophobic cycloaliphatic additive, or combinations thereof, wherein the additive has a boiling point greater than about 120.degree. C. An electrochemical fuel cell including the polymer-electrolyte membrane, and a related method, are also presented.

Krishnan, Lakshmi; Yeager, Gary William; Soloveichik, Grigorii Lev

2014-12-09T23:59:59.000Z

443

Evaluation of Rexene polymers in hot mixed asphalt concrete  

E-Print Network (OSTI)

Committee: Dr. Dallas N. Little The objective of this research was to provide a comprehensive characterization of asphalt binders and paving mixtures modified with four polymers produced by the Rexene Products Company (Odessa, Texas). The four polymers... on control asphalt cements and polymer modified asphalt cements to quantify the effects of the Rexene polymers. Most importantly, the binder study was designed to determine the temperature susceptibility of the binders. Asphalt cements from three...

Rodriguez, Mary Anne Reese

1991-01-01T23:59:59.000Z

444

Organic thin film prehistory: looking towards solution phase aggregation |  

NLE Websites -- All DOE Office Websites (Extended Search)

Organic thin film prehistory: looking towards solution phase aggregation Organic thin film prehistory: looking towards solution phase aggregation Wednesday, November 6, 2013 - 3:00pm SLAC, Redtail Hawk Conference Room 108A Christopher Tassone, SSRL Polymer bulk heterojunction (BHJ) solar cells have attracted significant attention in industry and academia because of their potential for achieving large-area, light-weight, and flexible photovoltaic devices through cost-effective solution deposition techniques. These devices consist of a blend of an absorbing polymer and an electron accepting fullerene, the molecular packing and phase segregation of which heavily influence power conversion efficiency by effecting important processes such as exciton splitting, charge transport, and recombination. Understanding and utilization of molecular interactions to predicatively control the

445

Study Shows Significant Economic Impact from Recovery Act  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

May 03, 2011 May 03, 2011 Study Shows Significant Economic Impact from Recovery Act AIKEN, S.C. - A study recently released shows the $1.6 billion the Savannah River Site (SRS) received from the American Recovery and Reinvestment Act has had a positive economic impact on the adjacent five-county region. The study's findings were presented at the University of South Carolina Aiken's (USC Aiken) Convocation Center. More than 75 people attended the meeting, where presenters commended the Recovery Act for accelerating Cold War cleanup at SRS and boosting employment and business in the local community. "I go out to the sites and talk to the people in the communities," EM Chief Operations Officer Cynthia Anderson said at the meeting. "The Recovery Act is

446

Dynein Motor Domain Shows Ring-Shaped Motor, Buttress  

NLE Websites -- All DOE Office Websites (Extended Search)

Dynein Motor Domain Shows Ring-Shaped Motor, Buttress Print Dynein Motor Domain Shows Ring-Shaped Motor, Buttress Print Movement is fundamental to life. It takes place even at the cellular level where cargo is continually being transported by motor proteins. These tiny machines convert the energy gained from hydrolysing ATP into a series of small conformational changes that allow them to literally "walk" along microscopic tracks. Motor proteins (in the kinesin and myosin families) have been extensively studied by x-ray crystallography, but until recently there was little molecular structural information for dyneins, another type of motor protein. A group from the University of California, San Francisco, working at ALS Beamline 8.3.1 has reported the 6-Ã…-resolution structure of the motor domain of dynein in yeast. It reveals details of the ring-shaped motor as well as a new, unanticipated feature called the buttress that may play an important role in dynein's mechanical cycle.

447

Dynein Motor Domain Shows Ring-Shaped Motor, Buttress  

NLE Websites -- All DOE Office Websites (Extended Search)

Dynein Motor Domain Shows Ring-Shaped Motor, Buttress Print Dynein Motor Domain Shows Ring-Shaped Motor, Buttress Print Movement is fundamental to life. It takes place even at the cellular level where cargo is continually being transported by motor proteins. These tiny machines convert the energy gained from hydrolysing ATP into a series of small conformational changes that allow them to literally "walk" along microscopic tracks. Motor proteins (in the kinesin and myosin families) have been extensively studied by x-ray crystallography, but until recently there was little molecular structural information for dyneins, another type of motor protein. A group from the University of California, San Francisco, working at ALS Beamline 8.3.1 has reported the 6-Ã…-resolution structure of the motor domain of dynein in yeast. It reveals details of the ring-shaped motor as well as a new, unanticipated feature called the buttress that may play an important role in dynein's mechanical cycle.

448

Dynein Motor Domain Shows Ring-Shaped Motor, Buttress  

NLE Websites -- All DOE Office Websites (Extended Search)

Dynein Motor Domain Shows Ring-Shaped Motor, Buttress Print Dynein Motor Domain Shows Ring-Shaped Motor, Buttress Print Movement is fundamental to life. It takes place even at the cellular level where cargo is continually being transported by motor proteins. These tiny machines convert the energy gained from hydrolysing ATP into a series of small conformational changes that allow them to literally "walk" along microscopic tracks. Motor proteins (in the kinesin and myosin families) have been extensively studied by x-ray crystallography, but until recently there was little molecular structural information for dyneins, another type of motor protein. A group from the University of California, San Francisco, working at ALS Beamline 8.3.1 has reported the 6-Ã…-resolution structure of the motor domain of dynein in yeast. It reveals details of the ring-shaped motor as well as a new, unanticipated feature called the buttress that may play an important role in dynein's mechanical cycle.

449

Dynein Motor Domain Shows Ring-Shaped Motor, Buttress  

NLE Websites -- All DOE Office Websites (Extended Search)

Dynein Motor Domain Shows Ring-Shaped Motor, Buttress Print Dynein Motor Domain Shows Ring-Shaped Motor, Buttress Print Movement is fundamental to life. It takes place even at the cellular level where cargo is continually being transported by motor proteins. These tiny machines convert the energy gained from hydrolysing ATP into a series of small conformational changes that allow them to literally "walk" along microscopic tracks. Motor proteins (in the kinesin and myosin families) have been extensively studied by x-ray crystallography, but until recently there was little molecular structural information for dyneins, another type of motor protein. A group from the University of California, San Francisco, working at ALS Beamline 8.3.1 has reported the 6-Ã…-resolution structure of the motor domain of dynein in yeast. It reveals details of the ring-shaped motor as well as a new, unanticipated feature called the buttress that may play an important role in dynein's mechanical cycle.

450

Secretary Chu Visits the 2012 North American International Auto Show |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Chu Visits the 2012 North American International Auto Chu Visits the 2012 North American International Auto Show Secretary Chu Visits the 2012 North American International Auto Show January 12, 2012 - 9:54am Addthis 1 of 10 Energy Secretary Steven Chu with Chrysler Chief Executive Sergio Marchionne. Image: Hantz Leger (Energy Department Contractor) Date taken: 2012-01-10 00:00 2 of 10 Energy Secretary Steven Chu examines the Dodge Dart's four cylinder, 2.4-liter, 184 horsepower engine block. Image: Hantz Leger (Energy Department Contractor) Date taken: 2012-01-10 00:00 3 of 10 Energy Secretary Steven Chu gets behind the wheel of the new 2013 Dodge Dart. Image: Hantz Leger (Energy Department Contractor) Date taken: 2012-01-10 00:00 4 of 10 Energy Secretary Steven Chu examines the interior of the new 2013 Dodge Dart. Image: Hantz Leger (Energy Department Contractor)

451

ORISE: Report shows number of health physics degrees for 2010  

NLE Websites -- All DOE Office Websites (Extended Search)

report shows number of health physics degrees increased for report shows number of health physics degrees increased for graduates, decreased for undergraduates in 2010 Decreased number of B.S. degrees remains higher than levels in the early 2000 FOR IMMEDIATE RELEASE Dec. 20, 2011 FY12-09 OAK RIDGE, Tenn.-The number of health physics graduate degrees increased for both master's and doctoral candidates in 2010, but decreased for bachelor's degrees, says a report released this year by the Oak Ridge Institute for Science and Education. The ORISE report, Health Physics Enrollments and Degrees Survey, 2010 Data, surveyed 24 academic programs with enrollment and degree data and included students majoring in health physics or in an option program equivalent to a major, such as other health physics-based programs embedded in life

452

Study Shows Roles of Receptor, Thiol on Adaptive Response  

NLE Websites -- All DOE Office Websites (Extended Search)

Study Shows Roles of Receptor, Thiol on Adaptive Response Study Shows Roles of Receptor, Thiol on Adaptive Response Jeffrey Murley Jeffrey Murley, Ph.D. David Grdina, Ph.D. Low Dose program-supported scientists at The University of Chicago have gained more insight into adaptive protective responses indicating the role of oxidative stress, the role of reactive oxygen species (ROS), and the induction of SOD2 (manganese Superoxide Dismutase) activity. These changes are central to the production of adaptive protective responses. Why Study Adaptive Response? Exposing cells to low doses of ionizing radiation has been reported to elevate resistance to genomic damage when the same cells are subsequently exposed to a much higher dose of radiation. This phenomenon, called adaptive response, is characterized by an increase

453

Secretary Chu Visits the 2012 North American International Auto Show |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Secretary Chu Visits the 2012 North American International Auto Secretary Chu Visits the 2012 North American International Auto Show Secretary Chu Visits the 2012 North American International Auto Show January 12, 2012 - 9:54am Addthis 1 of 10 Energy Secretary Steven Chu with Chrysler Chief Executive Sergio Marchionne. Image: Hantz Leger (Energy Department Contractor) Date taken: 2012-01-10 00:00 2 of 10 Energy Secretary Steven Chu examines the Dodge Dart's four cylinder, 2.4-liter, 184 horsepower engine block. Image: Hantz Leger (Energy Department Contractor) Date taken: 2012-01-10 00:00 3 of 10 Energy Secretary Steven Chu gets behind the wheel of the new 2013 Dodge Dart. Image: Hantz Leger (Energy Department Contractor) Date taken: 2012-01-10 00:00 4 of 10 Energy Secretary Steven Chu examines the interior of the new 2013 Dodge

454

Washington Auto Show Spotlight: How Fuel Cell Electric Vehicles Work  

Office of Energy Efficiency and Renewable Energy (EERE)

Fuel cell electric vehicles (FCEVs) are quickly becoming a commercially viable sustainable transportation option for Americans. Unlike gasoline-powered cars, these cutting-edge vehicles are fueled by hydrogen and emit only water. The latest and greatest FCEVs are on display this week at the Washington Auto Show. Learn more about how FCEVs work and what the Energy Department is doing to make them even more energy efficient and cost effective.

455

Secretary Chu Speaks at the 2010 Washington Auto Show  

ScienceCinema (OSTI)

Secretary Chu lays out a roadmap for how the U.S. can lead the world in making the clean vehicles we need at the 2010 Washington Auto Show. He also announced that the Department of Energy had closed on a $1.4 billion loan to Nissan to build the all-electric LEAF in Tennessee and create up to 1,300 American jobs.

Secretary Chu

2010-09-01T23:59:59.000Z

456

JSON shows incomplete info | OpenEI Community  

Open Energy Info (EERE)

JSON shows incomplete info JSON shows incomplete info Home > Groups > Utility Rate I pointed this out this bug a while ago, but I'm re-posting since it still hasn't been resolved. I have found several rates where the JSON file doesn't show all of the information shown in the web interface. This is not an approval issue since I see it on both rates that say "This is the approved revision of this page, as well as being the most recent." and "No revision has been approved for this page. It is currently under review by our subject matter experts." Here is an example: http://en.openei.org/wiki/Data:0a897297-e17e-42c0-8f40-8db41b44b004 http://en.openei.org/services/rest/utility_rates?version=latest&format=json_plain&detail=full&getpage=Data:0a897297-e17e-42c0-8f40-8db41b44b004

457

Microfluidic devices and methods including porous polymer monoliths  

DOE Patents (OSTI)

Microfluidic devices and methods including porous polymer monoliths are described. Polymerization techniques may be used to generate porous polymer monoliths having pores defined by a liquid component of a fluid mixture. The fluid mixture may contain iniferters and the resulting porous polymer monolith may include surfaces terminated with iniferter species. Capture molecules may then be grafted to the monolith pores.

Hatch, Anson V; Sommer, Gregory J; Singh, Anup K; Wang, Ying-Chih; Abhyankar, Vinay V

2014-04-22T23:59:59.000Z

458

Polymers Promoting Quality by Jung-Il Jin  

E-Print Network (OSTI)

of polymer science. The Polymer Education and International Cooperation sessions provided an opportunity and the total number of presentations, including posters, was slightly more than 1 300 (35 percent Brazilian) for his brilliant effort in bridging polymer science with biological problems. Mr. Hong-Shik Ko, president

Tew, Gregory N.

459

Method of making organic light emitting devices  

DOE Patents (OSTI)

The present invention provides a method for the preparation of organic light-emitting devices comprising a bilayer structure made by forming a first film layer comprising an electroactive material and an INP precursor material, and exposing the first film layer to a radiation source under an inert atmosphere to generate an interpenetrating network polymer composition comprising the electroactive material. At least one additional layer is disposed on the reacted first film layer to complete the bilayer structure. The bilayer structure is comprised within an organic light-emitting device comprising standard features such as electrodes and optionally one or more additional layers serving as a bipolar emission layer, a hole injection layer, an electron injection layer, an electron transport layer, a hole transport layer, exciton-hole transporting layer, exciton-electron transporting layer, a hole transporting emission layer, or an electron transporting emission layer.

Shiang, Joseph John (Niskayuna, NY); Janora, Kevin Henry (Schenectady, NY); Parthasarathy, Gautam (Saratoga Springs, NY); Cella, James Anthony (Clifton Park, NY); Chichak, Kelly Scott (Clifton Park, NY)

2011-03-22T23:59:59.000Z

460

ORGANIC CHEMISTRY UCLA Organic Chemistry Faculty  

E-Print Network (OSTI)

ORGANIC CHEMISTRY UCLA Organic Chemistry Faculty perform research in molecular machines, exotic CHEMISTRY FACULTY RESEARCH INTERESTS Anne M. Andrews, Professor-in-Residence: Understanding how areas of interest include cross- coupling reactions, green chemistry, heterocycle synthesis, and natural

Levine, Alex J.

Note: This page contains sample records for the topic "organic polymers show" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


461

Polymer, Vol. 46, no. 2, pp. 553-562 (2005) Modeling of the Mechanical Properties of Nanoparticle/Polymer Composites  

E-Print Network (OSTI)

and particles in the polymer. Several efforts have focused on the modeling of mechanical properties of nanoclay

Odegard, Gregory M.

462

8 - High-Performance Polyimides and Related Thermoset Polymers: Past and Present Development, and Future Research Directions  

Science Journals Connector (OSTI)

Publisher Summary Polyimides, prepared from a variety of dianhydride and diamine monomers, are characterized by repeating imide structural units (I) in the polymer backbone. This structure contributes to the exceptional thermal and oxidative stability of polyimides. It is necessary to have the imide structure along with the aromatic moieties because wholly aromatic polymers such as polyphenylenes are not as thermo-oxidatively resistant as polyimides. The combination of the aromatic structure and the imide structure results in a polymer with a high glass transition temperature (Tg) and high thermo-oxidative stability. These aromatic polyimides can be processed either as thermosetting or thermoplastic resins, depending on the processing characteristics of the polymer resin or the process required to transform the prepolymer resin into the final form or shape. These polymers are broken down conveniently into three categories, depending on their processing characteristics. One of these categories includes thermoplastic polyimides. The polyimides in this first category are processed via precursors that undergo condensation reactions to form the final product. The precursors are usually the amic acid or the amic ester intermediate. They are tractable, soluble in common organic solvents, and generally applied as lacquers.

Abraham L. Landis; Kreisler S.Y. Lau

1999-01-01T23:59:59.000Z

463

Line tests show DRA's don't cross-contaminate  

SciTech Connect

Pipeline tests with a commercially available drag-reducing agent (DRA) show that such agents can be injected into one product in a multiproduct pipeline without cross-contamination from one batch to another. The tests were conducted in the Cherokee system, a three-segment Ponca City-to-Oklahoma City products line operated by Conoco Pipe Line Co. A batch of gasoline treated with a DRA, Conoco's CDR Flow Improver, preceded an untreated jet-fuel batch. The amount of DRA in the gasoline was measured as the tenders were transported through the pipeline system.

Goudy, C.F.L.; Muth, C.I.

1989-05-15T23:59:59.000Z

464

Kuwaiti oil sector shows more signs of recovery  

SciTech Connect

This paper reports that Kuwait's oil sector continues to show signs of recovery from the Persian Gulf war. On Mar. 23 Kuwait Petroleum Co. (KPC) loaded the country's first shipment of liquefied petroleum gas for export since the Iraqi invasion in August 1990. In addition, the first shipment of Kuwaiti crude recovered from giant oil lakes formed by hundreds of wild wells sabotaged in the war was to arrive by tanker in Naples, Italy, late last month. The tanker is carrying 210,000 bbl of crude. However, the project to clean up the lakes and recover more oil, undertaken by Bechtel Corp. with Kuwait Oil Co. (KOC), has reached a stand still.

Not Available

1992-04-06T23:59:59.000Z

465

Kinetic model for a polymer in one dimension  

Science Journals Connector (OSTI)

We consider a model for a directed polymer on a one-dimensional lattice of width 2, with attractive interactions between monomers that occupy first-neighbor sites on the lattice and are not consecutive along the chain. We show that this model is equivalent to the one-dimensional Ising model with first- and second-neighbor interactions. We study the kinetic behavior of the model in the region of the phase diagram where the ground state is not frustrated, using a Glauber ansatz for the time evolution of the configurations. In order to decouple the dynamical equations, we use the pair approximation. In this approximation, we show that the dynamical exponent of the model is a function of the ratio between second- and first-neighbor interaction strengths. (c) 1995 The American Physical Society

José Arthur Martins and Jürgen F. Stilck

1995-12-01T23:59:59.000Z

466

Directed polymers in a random environment with a defect line  

E-Print Network (OSTI)

We study the depinning transition of the $1+1$ dimensional directed polymer in a random environment with a defect line. The random environment consists of i.i.d. potential values assigned to each site of $\\mathbb{Z}^2$; sites on the positive axis have the potential enhanced by a deterministic value $u$. We show that for small inverse temperature $\\beta$ the quenched and annealed free energies differ significantly at most in a small neighborhood (of size of order $\\beta$) of the annealed critical point $u_c^a=0$. For the case $u=0$, we show that the difference between quenched and annealed free energies is of order $\\beta^4$ as $\\beta\\to 0$, assuming only finiteness of exponential moments of the potential values, improving existing results which required stronger assumptions.

Kenneth S. Alexander; Gökhan Yildirim

2014-02-26T23:59:59.000Z

467

Polymer defect states modulate open-circuit voltage in bulk-heterojunction solar cells  

SciTech Connect

Defect states influence the operation of organic solar cells altering transport, recombination, and energetic mechanisms. This work investigates how processing conditions induce morphology-related, electrically active defects in the donor polymer of bulk-heterojunction solar cells. Structural order is inferred from absorption and X-ray diffraction data, while defect density is determined from capacitance methods. A correlation is observed between the polymer nanocrystallite size, the defect concentration, and the output voltage. For the case of poly(3-hexylthiophene), processing that promote crystallinity is beneficial for the device performance as it decreases the defect density (energy disorder) that finally enlarges the maximum achievable open-circuit voltage. Defect states within the effective bandgap modulate the downshift of the hole Fermi level upon illumination that in turn establishes the achievable open-circuit voltage.

Ripolles, Teresa S.; Guerrero, Antonio; Garcia-Belmonte, Germà, E-mail: garciag@uji.es [Photovoltaic and Optoelectronic Devices Group, Departament de Física, Universitat Jaume I, ES-12071 Castelló (Spain)] [Photovoltaic and Optoelectronic Devices Group, Departament de Física, Universitat Jaume I, ES-12071 Castelló (Spain)

2013-12-09T23:59:59.000Z

468

Environmental Highlights of the 2007 Tokyo Motor Show  

NLE Websites -- All DOE Office Websites (Extended Search)

2 2 0 0 0 0 7 7 T T o o k k y y o o M M o o t t o o r r S S h h o o w w K K e e i i t t h h H H a a r r d d y y Page 2 of 21 The Tokyo Motor Show covers a broad range of vehicle technologies, e.g., commercial vehicles were incorporated this year, and many of the new concepts are either hybrid or electric (some examples above). But the high-level message is essentially the same as the other shows in the past year - environmental technology is an integral part of the major manufacturers" plans, including improved engines and after-treatment, lightweight materials, new propulsion systems and alternative fuels. And in response to the push in the States, plug-in hybrid electric vehicles (PHEVs) are being explored by several manufacturers. In fact, there is some interesting

469

Semi-flexible hydrogen-bonded and non-hydrogen bonded lattice polymers  

E-Print Network (OSTI)

We investigate the addition of stiffness to the lattice model of hydrogen-bonded polymers in two and three dimensions. We find that, in contrast to polymers that interact via a homogeneous short-range interaction, the collapse transition is unchanged by any amount of stiffness: this supports the physical argument that hydrogen bonding already introduces an effective stiffness. Contrary to possible physical arguments, favouring bends in the polymer does not return the model's behaviour to that comparable to the semi-flexible homogeneous interaction model, where the canonical $\\theta$-point occurs for a range of parameter values. In fact, for sufficiently large bending energies the crystal phase disappears altogether, and no phase transition of any type occurs. We also compare the order-disorder transition from the globule phase to crystalline phase in the semi-flexible homogeneous interaction model to that for the fully-flexible hybrid model with both hydrogen and non-hydrogen like interactions. We show that these phase transitions are of the same type and are a novel polymer critical phenomena in two dimensions. That is, it is confirmed that in two dimensions this transition is second-order, unlike in three dimensions where it is known to be first order. We also estimate the crossover exponent and show that there is a divergent specific heat, finding $\\phi=0.7(1)$ or equivalently $\\alpha=0.6(2)$. This is therefore different from the $\\theta$ transition, for which $\\alpha=-1/3$.

J Krawczyk; AL Owczarek; T Prellberg

2008-07-06T23:59:59.000Z

470

Extensional rheology of polymers and optical properties of blown polymer films  

E-Print Network (OSTI)

Extensional Rheo logy of Polymers and Optical Properties of Blown Polymer Films. (August 1998) Jason E. Maxey, B. S. , Texas A&M University Chair of Advisory Committee: Dr. Lynden Archer Biaxial extensional flows are a commonly encountered and yet poorly.... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Molecular Orientation by Bireiringence . Crystallinity by Raman Spectroscopy. Results and Discussion Film Bireiringence Raman Analysis of Crystallinity . . . . . . . 5 . . . . . 7 . . . . . 7 11 . 13 . . . 13 . . . 18 LUBRICATED SQUEEZING...

Maxey, Jason E

2012-06-07T23:59:59.000Z

471

Brine tolerant polymer for oil recovery applications  

SciTech Connect

This patent describes a beta-alanine-type branched partially hydrolyzed polyacrylamide, which is added to an aqueous injection fluid to increase the viscosity of the fluid. The polymer resists plugging of the wellbore face and/or matrix pores and is brine tolerant when injected into a subterranean hydrocarbon-bearing formation.

Tackett, J.E.

1987-11-24T23:59:59.000Z

472

Water-soluble polymers and compositions thereof  

DOE Patents (OSTI)

Water-soluble polymers including functionalization from the group of amino groups, carboxylic acid groups, phosphonic acid groups, phosphonic ester groups, acylpyrazolone groups, hydroxamic acid groups, aza crown ether groups, oxy crown ethers groups, guanidinium groups, amide groups, ester groups, aminodicarboxylic groups, permethylated polyvinylpyridine groups, permethylated amine groups, mercaptosuccinic acid groups, alkyl thiol groups, and N-alkylthiourea groups are disclosed.

Smith, B.F.; Robison, T.W.; Gohdes, J.W.

1999-04-06T23:59:59.000Z

473

Laminar-turbulent transition in polymer solutions  

Science Journals Connector (OSTI)

... as shown in Fig. Ic. A similar appearance to Fig. Ic was obtained by roughening the surface of the ogive in pure water flow (although we were careful to ... the surface of the ogive in pure water flow (although we were careful to avoid roughening the ogive surface when using polymer solution). Thus, we conclude that the presence ...

J. W. HOYT

1977-12-08T23:59:59.000Z

474

Preparation and characterization of gradient polymer films  

SciTech Connect

Gradient polymers are multicomponent polymers whose chemical constitution varies with depth in the sample. Although these polymers may possess unique mechanical, optical, and barrier properties they remain relatively unexplored. This work is a study of the preparation of gradient polymers by sequential exposure of films to a diffusing monomer followed by electron beam irradiation. Initial experiments involved immersion of poly(vinyl chloride) (PVC) films in styrene or n-butyl methacrylate (BMA) for various time periods followed by irradiation with 1 or 10 megarads of accelerated electrons. A significant amount of poly(n-butyl methacrylate) (PBMA) formed in PVC/BMA systems, but little polystyrene could be found in the PVC/styrene films. A second set of experiments involved immersion of PVC and polyethylene (PE) films in BMA for 20, 40, 60, and 720 minutes followed by irradiation with 10 megarads of electrons. These films were then characterized using optical microscopy, quantitative transmission Fourier transform infrared spectroscopy (FTIR), and a depth profiling procedure based on quantitative attenuated total reflection (ATR) FTIR. It was concluded that the mechanism of PBMA formation in the polyethylene films was a result of events immediately following irradiation. Atmospheric oxygen diffusing into irradiated films trapped free radicals at the film surfaces. This was followed by storage in an evacuated desiccator where unintentional exposure to BMA vapor took place. This BMA reacted with free radicals that remained within the film cores, polymerizing to PBMA.

Smith, S.C.

1987-01-01T23:59:59.000Z

475

NETL: News Release - Innovative Mercury Removal Technique Shows Early  

NLE Websites -- All DOE Office Websites (Extended Search)

August 5, 2003 August 5, 2003 Innovative Mercury Removal Technique Shows Early Promise Photochemical Process Developed in Federal Lab Removes Mercury from Flue Gas - NETL scientist Evan Granite prepares a lab test of the UV mercury removal process. - NETL scientist Evan Granite prepares for a lab test of the UV mercury removal process. MORGANTOWN, WV - A promising technology to remove mercury from coal-fired power plants -- dubbed the "GP-254 Process" -- has been developed and is currently being tested at the Department of Energy's National Energy Technology Laboratory (NETL). Newly patented, the GP-254 Process enhances mercury removal using ultraviolet light to induce various components of power plant stack gas to react with the mercury, and changes the

476

Analysis of Lake Washington Microbes Shows the Power of Metagenomic  

NLE Websites -- All DOE Office Websites (Extended Search)

8, 2008 8, 2008 Analysis of Lake Washington Microbes Shows the Power of Metagenomic Approaches WALNUT CREEK, CA-Today's powerful sequencing machines can rapidly read the genomes of entire communities of microbes, but the challenge is to extract meaningful information from the jumbled reams of data. In a paper appearing in Nature Biotechnology August 17, a collaboration headed by researchers at the University of Washington and the U.S. Department of Energy Joint Genome Institute (DOE JGI) describes a novel approach for extracting single genomes and discerning specific microbial capabilities from mixed community ("metagenomic") sequence data. Methylamine-enriched community of Lake Washington Methylamine-enriched community of Lake Washington sediment featuring

477

Methods of making composite optical devices employing polymer liquid crystal  

DOE Patents (OSTI)

Composite optical devices are disclosed using polymer liquid crystal materials both as optical and adhesive elements. The devices are made by assembling a heated polymer liquid crystal compound, while in a low viscosity form between optically transparent substrates. The molecules of the polymer are oriented, while in the liquid crystalline state and while above the glass transition temperature (T[sub g]) of the polymer, to provide the desired optical effects, such as polarization, and selective reflection. The liquid crystal polymer cements the substrates together to form an assembly providing the composite optical device. 7 figures.

Jacobs, S.D.; Marshall, K.L.; Cerqua, K.A.

1991-10-08T23:59:59.000Z

478

Methods of making composite optical devices employing polymer liquid crystal  

DOE Patents (OSTI)

Composite optical devices using polymer liquid crystal materials both as optical and adhesive elements. The devices are made by assembling a heated polymer liquid crystal compound, while in a low viscosity form between optically transparent substrates. The molecules of the polymer are oriented, while in the liquid crystalline state and while above the glass transition temperature (T.sub.g) of the polymer, to provide the desired optical effects, such as polarization, and selective reflection. The liquid crystal polymer cements the substrates together to form an assembly providing the composite optical device.

Jacobs, Stephen D. (Pittsford, NY); Marshall, Kenneth L. (Henrietta, NY); Cerqua, Kathleen A. (Fairport, NY)

1991-01-01T23:59:59.000Z

479

The effect of simulated hypervelocity space debris on polymers  

SciTech Connect

Space debris population in low Earth orbit has been increasing constantly with the increase in spacecraft missions. Hypervelocity space debris impacts limit the functionality of polymeric outer surfaces and, in extreme cases, might cause a total loss of a spacecraft. In this work, the fracture of Kapton films by ultrahigh velocity impacts was studied. A laser-driven flyer ground simulation system was used to accelerate aluminum flyers to impact velocities as high as 2.9 km/s against polymer films with different thicknesses. Scanning electron microscopy was used to characterize the fracture morphology. Impact effects on the internal structure of the polymer were studied by means of X-ray microtomography. It was found that with an increase in debris velocity, a ductile-to-brittle transition occurred. However, fractures created by impacts at velocities above 1.7 km/s showed central impacts regions, which experienced the highest strain rate and were of ductile-type fracture, while the outer regions, which experienced a lower strain rate, failed through brittle cracking. A model explaining this phenomenon, based on the temperature gradient developed within the impacted region during collision, is presented.

Verker, R. [Space Environment Division, Soreq NRC, Yavne 81800 (Israel) and Department of Solid Mechanics, Materials and Systems, Tel Aviv University, Ramat Aviv, Tel Aviv 69978 (Israel)]. E-mail: rverker@soreq.gov.il; Eliaz, N. [Department of Solid Mechanics, Materials and Systems, Tel Aviv University, Ramat Aviv, Tel Aviv 69978 (Israel); Gouzman, I. [Space Environment Division, Soreq NRC, Yavne 81800 (Israel); Eliezer, S. [Department of Plasma Physics, Soreq NRC, Yavne 81800 (Israel); Fraenkel, M. [Department of Plasma Physics, Soreq NRC, Yavne 81800 (Israel); Maman, S. [Department of Plasma Physics, Soreq NRC, Yavne 81800 (Israel); Beckmann, F. [Department of Neutron Scattering, GKSS, Geesthacht 21502 (Germany); Pranzas, K. [Department of Neutron Scattering, GKSS, Geesthacht 21502 (Germany); Grossman, E. [Space Environment Division, Soreq NRC, Yavne 81800 (Israel)

2004-11-08T23:59:59.000Z

480

Concentration dependence of rheological properties of telechelic associative polymer solutions  

Science Journals Connector (OSTI)

We consider concentration dependence of rheological properties of associative telechelic polymer solutions. Experimental results for model telechelic polymer solutions show rather strong concentration dependence of rheological properties. For solutions with relatively high concentrations, linear viscoelasticity deviates from the single Maxwell behavior. The concentration dependence of characteristic relaxation time and moduli is different in high- and low-concentration cases. These results suggest that there are two different concentration regimes. We expect that densely connected (well percolated) networks are formed in high-concentration solutions, whereas sparsely connected (weakly percolated) networks are formed in low-concentration solutions. We propose single chain type transient network models to explain experimental results. Our models incorporate the spatial correlation effect of micellar cores and average number of elastically active chains per micellar core (the network functionality). Our models can reproduce nonsingle Maxwellian relaxation and nonlinear rheological behavior such as the shear thickening and thinning. They are qualitatively consistent with experimental results. In our models, the linear rheological behavior is mainly attributable to the difference of network structures (functionalities). The nonlinear rheological behavior is attributable to the nonlinear flow rate dependence of the spatial correlation of micellar core positions.

Takashi Uneyama; Shinya Suzuki; Hiroshi Watanabe

2012-09-06T23:59:59.000Z

Note: This page contains sample records for the topic "organic polymers show" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


481

The Organic Rankine Cycle  

Science Journals Connector (OSTI)

Chap. 3 is dedicated to Rankine cycles with organic fluids: the so-called organic Rankine cycles (ORC), which in recent years have ... of the use of...

Costante Mario Invernizzi

2013-01-01T23:59:59.000Z

482

Organization | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Organization Organization The Office of Economic Impact and Diversity is comprised of: The Office of the Director- contact us Office of Minority Business and Economic Development -...

483

Dynamics of Conformational Transition in Thermo-Sensitive Polymers and  

NLE Websites -- All DOE Office Websites (Extended Search)

Atomistic simulations elucidating the coil-to-globule conformational changes in thermosensitive polymers. Atomistic simulations elucidating the coil-to-globule conformational changes in thermosensitive polymers. Atomistic simulations elucidating the coil-to-globule conformational changes in thermosensitive polymers. Dynamics of Conformational Transition in Thermo-Sensitive Polymers and Hydrogels PI Name: Subramanian Sankaranarayanan PI Email: skrssank@anl.gov Institution: Argonne National Laboratory Allocation Program: ALCC Allocation Hours at ALCF: 50 Million Year: 2012 Research Domain: Materials Science Subramanian Sankaranarayanan with Argonne's Center for Nanoscale Materials was awarded 50 million hours to study conformational transformations in thermo-sensitive oligomers and their macroscopic architectures such as polymer brushers and polymer gels. Understanding the conformational transformations of isolated linear polymer

484

Polymers with Tailored Electronic Structure for High Capacity Lithium  

NLE Websites -- All DOE Office Websites (Extended Search)

Polymers with Tailored Electronic Structure for High Capacity Lithium Polymers with Tailored Electronic Structure for High Capacity Lithium Battery Electrodes Title Polymers with Tailored Electronic Structure for High Capacity Lithium Battery Electrodes Publication Type Journal Article Year of Publication 2011 Authors Liu, Gao, Shidi Xun, Nenad Vukmirovic, Xiangyun Song, Paul Olalde-Velasco, Honghe Zheng, Vince S. Battaglia, Linwang Wang, and Wanli Yang Journal Advanced Materials Volume 23 Start Page 4679 Issue 40 Pagination 4679 - 4683 Date Published 10/2011 Keywords binders, conducting polymers, density funcational theory, lithium batteries, X-ray spectroscopy Abstract A conductive polymer is developed for solving the long-standing volume change issue in lithium battery electrodes. A combination of synthesis, spectroscopy and simulation techniques tailors the electronic structure of the polymer to enable in situ lithium doping. Composite anodes based on this polymer and commercial Si particles exhibit 2100 mAh g-1 in Si after 650 cycles without any conductive additive.

485

Durable polymer-aerogel based superhydrophobic coatings, a composite material  

DOE Patents (OSTI)

Provided are polymer-aerogel composite coatings, devices and articles including polymer-aerogel composite coatings, and methods for preparing the polymer-aerogel composite. The exemplary article can include a surface, wherein the surface includes at least one region and a polymer-aerogel composite coating disposed over the at least one region, wherein the polymer-aerogel composite coating has a water contact angle of at least about 140.degree. and a contact angle hysteresis of less than about 1.degree.. The polymer-aerogel composite coating can include a polymer and an ultra high water content catalyzed polysilicate aerogel, the polysilicate aerogel including a three dimensional network of silica particles having surface functional groups derivatized with a silylating agent and a plurality of pores.

Kissel, David J; Brinker, Charles Jeffrey

2014-03-04T23:59:59.000Z

486

Controllable Organization of Quantum Dots into Mesoscale Wires and Cables via Interfacial Block Copolymer Self-Assembly  

Science Journals Connector (OSTI)

Controllable Organization of Quantum Dots into Mesoscale Wires and Cables via Interfacial Block Copolymer Self-Assembly ... Figure 2b,c shows higher magnification AFM images of interesting features within the branched cable network, including a typical branch point (b) and a QD/polymer ring incorporated into the cable (c). ... It was noted that several of the LB films containing ring/cable structures also contained small planar aggregates along the length of the cables where an elevated rim was present at the edge of a relatively flat surface, similar to a continent as described by Devereaux et al.26 It appears that these flat surfaces tend to rupture by formation of a single central hole in a secondary dewetting process, followed by the radial growth of the hole. ...

Robert B. Cheyne; Matthew G. Moffitt

2007-02-23T23:59:59.000Z

487

Directed polymer in random media in two dimensions: Numerical study of the aging dynamics Laboratoire de Physique Theorique de l'Ecole Normale Superieure, Unite Propre du CNRS, Associee a` l'Ecole Normale Superieure  

E-Print Network (OSTI)

of vortex lines in high-temperature superconductors 4 . It also has connections with spin glasses, as has polymer, showing the existence of a low-temperature phase similar to the random energy model of Derrida 6 to the droplets model for spin glasses 13,14 : the polymer moves in a network of ``tubes'' where its probability

Barrat, Alain

488

In situ monitoring of structure formation in the active layer of polymer solar cells during roll-to-roll coating  

SciTech Connect

The active layer crystallization during roll-to-roll coating of organic solar cells is studied in situ. We developed an X-ray setup where the coater unit is an integrated part of the small angle X-ray scattering instrument, making it possible to control the coating process while recording scattering measurements in situ, enabling us to follow the crystal formation during drying. By varying the distance between the coating head and the point where the X-ray beam hits the film, we obtained measurements of 4 different stages of drying. For each of those stages, the scattering from as long a foil as possible is summed together, with the distance from coating head to scattering point kept constant. The results are average crystallographic properties for the active layer coated on a 30 m long foil. With this insight into the dynamics of crystallization in a roll-coated polymer film, we find that the formation of textured and untextured crystallites seems uncorrelated, and happens at widely different rates. Untextured P3HT crystallites form later in the drying process than expected which may explain previous studies speculating that untextured crystallization depends on concentration. Textured crystallites, however, begin forming much earlier and steadily increases as the film dries, showing a development similar to other in situ studies of these materials.

Rossander, Lea H.; Zawacka, Natalia K.; Dam, Henrik F.; Krebs, Frederik C.; Andreasen, Jens W., E-mail: jewa@dtu.dk [Department of Energy Conversion and Storage, Technical University of Denmark, Frederiksborgvej 399, DK-4000 (Denmark)

2014-08-15T23:59:59.000Z

489

ORGANIC CONTAMINANTS: A BIBLIOGRAPHY  

E-Print Network (OSTI)

·etention bY Por·ous PolYmer adsorbents: APPlicahc•n to for·SamPle tr·ansfer· from adsorbent into a gas chromatograPhicis collected on a dual-adsorbent traP containing Tenax GC

Lepman, S.R.

2014-01-01T23:59:59.000Z

490

Transportation Organization and Functions  

Energy.gov (U.S. Department of Energy (DOE))

Office of Packaging and Transportation list of organizations and functions, with a list of acronyms.

491

Metal-doped organic foam  

DOE Patents (OSTI)

Organic foams having a low density and very small cell size and method for producing same in either a metal-loaded or unloaded (nonmetal loaded) form are described. Metal-doped foams are produced by soaking a polymer gel in an aqueous solution of desired metal salt, soaking the gel successively in a solvent series of decreasing polarity to remove water from the gel and replace it with a solvent of lower polarity with each successive solvent in the series being miscible with the solvents on each side and being saturated with the desired metal salt, and removing the last of the solvents from the gel to produce the desired metal-doped foam having desired density cell size, and metal loading. The unloaded or metal-doped foams can be utilized in a variety of applications requiring low density, small cell size foam. For example, rubidium-doped foam made in accordance with the invention has utility in special applications, such as in x-ray lasers.

Rinde, James A. (Livermore, CA)

1982-01-01T23:59:59.000Z

492

Speed enhancement of photorefractive polymers by means of light-induced filling of trapping states  

Science Journals Connector (OSTI)

The fastest organic photorefractive materials show response times in the millisecond range. The origin of this limit is not yet fully understood. Charge-carrier generation and...

Wolff, Janpeter; Schloter, Stefan; Hofmann, Uwe; Haarer, Dietrich; Zilker, Stephan J

1999-01-01T23:59:59.000Z

493

Organic sponges for cost-effective CVOC abatement. Final report, September 1992--April 1994  

SciTech Connect

Air contaminated with CVOCs (chlorinated volatile organic compounds) arise from air stripping of ground water or from soil and dual phase vapor extraction. A research program was undertaken to develop sorbents better than activated carbon for remediation. Two such sorbents were found: Dow`s XUS polymer and Rohm and Haas` Ambersorb 563 (carbonaceous). Opportunities exist to further develop sorption and biodegradation technologies.

Flanagan, W.P.; Grade, M.M.; Horney, D.P.; Mackenzie, P.D.; Salvo, J.J.; Sivavec, T.M.; Stephens, M.L.

1994-07-01T23:59:59.000Z

494

Development of New Absorber Materials to Achieve Organic Photovoltaic Commercial Modules with 15% Efficiency and 20 Years Lifetime: Cooperative Research and Development Final Report, CRADA Number CRD-12-498  

SciTech Connect

Under this CRADA the parties will develop intermediates or materials that can be employed as the active layer in dye sensitized solar cells printed polymer systems, or small molecule organic photovoltaics.

Olson, D.

2014-08-01T23:59:59.000Z

495

D-A-D structured organic molecules with diketopyrrolopyrrole acceptor unit for solution-processed organic solar cells  

Science Journals Connector (OSTI)

...for solution-processed organic solar cells Jing Zhang Chang He Zhi-Guo Zhang...in solution-processed organic solar cells (OSCs). The molecules show broad...illumination of AM1.5, 100cm2. organic solar cells|solution-processable organic...

2014-01-01T23:59:59.000Z

496

Property:Event/Organizer | Open Energy Information  

Open Energy Info (EERE)

Organizer Organizer Jump to: navigation, search Property Name Event/Organizer Property Type String Description The entity or entities responsible for organizing the event. This is typically a person or organization. More than one organizer can be attributed to each event. Pages using the property "Event/Organizer" Showing 25 pages using this property. (previous 25) (next 25) 1 11th Annual Workshop on Greenhouse Gas Emission Trading + International Energy Agency (IEA) + 11th Annual Workshop on Greenhouse Gas Emission Trading Day 2 + International Energy Agency (IEA) + 15th International Business Forum: Low Carbon High Growth - Business Models for a Changing Climate + German Agency for International Cooperation (GIZ) + 18th Africa Partnership Forum + African Partnership Forum +

497

Mesogenic linear azobenzene polymer-stabilized nematic liquid crystals  

SciTech Connect

We describe the detailed study of a polymer stabilized liquid crystal compound, which was created by using a reactive (monofunctional) azobenzene mesogenic guest and a nematic liquid crystal host. The resonant interaction of light with the azobenzene segment of the guest and the mesogenic nature of the latter enable the optical alignment of host molecules and the permanent fixing of that orientation by means of UV polymerization of the guest. We use dynamic spectral, polarimetric, and scattering techniques to study the orientational ordering and interaction of the guest-host system. We show that the uniform UV polymerization of this compound results in a low scattering material system with dielectric and elastic properties that are relatively close to those of the host, while still providing the capacity for optical configuration of its morphology.

Bagramyan, Arutyun; Thibault-Maheu, Olivier; Galstian, Tigran [Center for Optics, Photonics and Laser, Department of Physics, Engineering Physics and Optics, Laval University, Pav. d'Optique-Photonique, 2375 Rue de la Terrasse, Quebec G1V 0A6 (Canada); Bessette, Andre; Zhao, Yue [Departement de Chimie, Universite de Sherbrooke, Sherbrooke, Quebec J1K 2R1 (Canada)

2011-03-15T23:59:59.000Z

498

Polymer and Composite Materials Meeting Agenda  

NLE Websites -- All DOE Office Websites (Extended Search)

(all times in Eastern Time Zone) (all times in Eastern Time Zone) Start End Activity POC 08:00 08:45 Reception and badging DOE 08:45 09:00 Welcome and meeting objectives / expectations / time horizon for research activities (targets) Erika Sutherland, Sunita Satyapal 09:00 10:00 Polymer/elastomer and composite material science: key issues, knowledge gaps, R&D/testing data needs (40 min speaking, 20 min Q&A) Kevin Simmons 10:00 10:30 Codes and standards requirements - SAE J2579, SAE J2601: knowledge gaps, R&D data/testing needs Mike Veenstra 10:30 11:00 Break 11:00 11:30 Codes and standards requirements -CSA HGV 4, ASME X and B31: knowledge gaps, R&D data/testing needs Aaron Harris 11:30 12:00 Polymer/elastomer Draft R&D Work Plan ideas / Describe

499

Hot Exciton Dissociation in a Conjugated Polymer  

Science Journals Connector (OSTI)

A model has been developed to treat field-assisted ultrafast on-chain dissociation of optical excitations in a conjugated polymer. Conversion of the excess photon energy above the singlet exciton into the vibrational heat bath of a polymer segment is considered as a main source of the energy required for charges to escape from a potential well formed by a superposition of the Coulomb and external electric fields. The calculated yield of carrier photogeneration increases strongly with increasing field but is independent of the temperature in good quantitative agreement with data obtained by Barth et al. [Chem. Phys. Lett. 288, 147 (1998)] on weakly disordered conjugated ladder-type poly-phenylene.

V. I. Arkhipov; E. V. Emelianova; H. Bässler

1999-02-08T23:59:59.000Z

500

Economic assessment of the thin polymer icemaker  

SciTech Connect

We have constructed and tested a small device to produce ice in ice/water mixtures using a cold fluid as the heat sink. The device is a flexible heat exchanger constructed from a thin film of a suitable polymer. When filled with circulating liquid coolant the heat exchanger consists of an inflated series of parallel tubes; Ice forms on the outside in complementary half cylinders. When the circulation in cut off, gravity drains the coolant and the static head of the water bath crushes the tubes, freeing them from the ice which floats to the surface. We here report an economic assessment of this device. In its present form, we find it competitive with existing commercial ice making systems. The analysis also points out two areas where further technical progress could lead to a significant economic advantage for the polymer film ice maker.

Leigh, R.W. [Pratt Inst., Brooklyn, NY (United States)

1992-07-01T23:59:59.000Z