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Note: This page contains sample records for the topic "materials synthesis self-assembly" from the National Library of EnergyBeta (NLEBeta).
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1

Design and Synthesis of Self-Assembled Monolayers on Mesoporous...  

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

Synthesis of Self-Assembled Monolayers on Mesoporous Supports (SAMMS): The Importance of Ligand Posture in Functional Design and Synthesis of Self-Assembled Monolayers on...

2

Imaging of self-assembly and self-assembled materials P. V. Braun  

E-Print Network (OSTI)

Imaging of self-assembly and self-assembled materials P. V. Braun Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801 Self-assembled materials have applications. Self-assembly has been proposed as a route to photonic band gap materials, semiconductor devices

Braun, Paul

3

2007 Synthesis and Self-assembly of Nanomaterials Workshop Summary  

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

Synthesis and Self-assembly of Nanomaterials Synthesis and Self-assembly of Nanomaterials Co-Organizers: Xiao-Min Lin (CNM) and Moonsub Shim (UIUC) A combination of advanced synthesis and assembly of molecular and nanoscale building blocks is one of the most promising routes to new macroscopic hybrid materials with unique and complex functionalities. During the past decade, many molecular and nanoscale building blocks have been synthesized with different morphologies and compositions, including conjugated polymers, inorganic nanocrystals, nanowires and nanotubes. Despite the continued advances in various aspects, many challenges remain to be addressed at different stages en route to applications. This full day workshop, organized by Xiao-Min Lin (CNM) and Moonsub Shim (UIUC), focused on how to

4

Mesoscale Self-Assembly of Hexagonal Plates Using Lateral Capillary Forces: Synthesis Using the "Capillary Bond"  

E-Print Network (OSTI)

Mesoscale Self-Assembly of Hexagonal Plates Using Lateral Capillary Forces: Synthesis Using examines self-assembly in a quasi-two-dimensional, mesoscale system. The system studied here involves and hydrophilic faces on the hexagonal plates led to three outcomes: (i) the extension of the strategies of self-assembly

Prentiss, Mara

5

RPM-2: A recyclable porous material with unusual adsorption capability: self assembly via structural transformations  

E-Print Network (OSTI)

-assembly of molecular electronics and smart materials will bring a new era in the field of material science.1 HoweverRPM-2: A recyclable porous material with unusual adsorption capability: self assembly via, fully recyclable porous material (RPM-2) with a very high sorption capability. Self

Li, Jing

6

Synthesis and characterization of self-assembling water-soluble polymers  

SciTech Connect

The synthesis is proposed of water-soluble vinyl and other polymers capable of self-assembly through hydrophobic bonding of pendent fluorocarbon and other hydrophobic groups. The self-assembly process will be studied by viscometry and dynamic viscoelasticity, and by static and dynamic light scattering. These investigations are aimed at identifying the structural features of polymers that are important in enhancing the viscosity of aqueous polymer solutions at very low polymer concentrations (< 1,000 ppm). The authors also initiate small angle neutron scattering (SANS) measurements aimed at the determination of the size of the fluorocarbon-containing hydrophobic aggregates. They will be interested in the degree of self assembly as a function of the type and length of the hydrophobic groups and of the type and length of the flexible spacer group linking the hydrophobic to the polymer backbone. The nature of the hydrophilic chain will also be of interest. Thus, they investigate a number of hydrophilic comonomers such as acrylamide, N-vinylpyrrolidone and anionic or cationic vinyl monomers. Surface interactions of these interesting copolymers will be studied by adsorption onto appropriate modified latex spheres. Finally, they propose to explore the synthesis of water-soluble polymers capable of self assembly through interactions of pendent polyanions and polycations.

Hogen-Esch, T.E.; Amis, E.J.

1992-05-01T23:59:59.000Z

7

Controlled Synthesis, Manipulation of Surface Hydrophobicity and Self-Assembly of Hematite Nanocrystals  

SciTech Connect

The preparation of uniform iron oxide monolayer thin films is of great interest not only in advanced materials synthesis but also in studies of microbial cell and iron oxide mineral interface interactions by techniques such as neutron reflectometry, which requires the use of uniform thin films of the mineral on a substrate. Here we report three techniques for fabricating such uniform hematite ( -Fe2O3) nanocrystal thin films. The nanocrystals with controlled sizes and morphologies were first synthesized by thermal hydrolysis of Fe3+ ions in acidic aqueous solution. Three methods were tested to enhance the surface hydrophobicity of the synthesized nanoparticles, including thermal dissociation of surface hydroxyl groups, stepwise solvent exchange, and surfactant-assisted phase transfer. FTIR and Raman spectroscopic analyses were used to elucidate the mechanisms of surface hydrophobicity changes on hematite nanoparticles. Results indicate that techniques of thermal treatment and stepwise solvent exchange caused the dissociation of surface -Fe OH groups into Fe-O-Fe structures, whereas surfactant-assisted phase transfer gave rise to surface hydrophobicity due to sorbed hydrocarbon chains. These surface modified hematite nanoparticles were found to readily self-assemble into monolayers at the water-air interface, which provided an effective means to obtain hematite nanoparticle thin films with controlled packing density and layer thicknesses in a Langmuir-Blodgett trough. Langmuir isotherm, SEM, TEM, AFM, UV-visible spectroscopy, and neutron reflectometry were used to characterize these thin films for their stability and uniformity before they were used for studies of the interactions between hematite and macromolecules.

Wang, Wei [ORNL; Liang, Liyuan [ORNL; Johs, Alexander [ORNL; Gu, Baohua [ORNL

2008-07-01T23:59:59.000Z

8

MATERIAL PROCESSING FOR SELF-ASSEMBLING MACHINE SYSTEMS  

SciTech Connect

We are developing an important aspect of a new technology based on self-reproducing machine systems. Such systems could overcome resource limitations and control the deleterious side effects of human activities on the environment. Machine systems capable of building themselves promise an increase in industrial productivity as dramatic as that of the industrial revolution. To operate successfully, such systems must procure necessary raw materials from their surroundings. Therefore, next to automation, most critical for this new technology is the ability to extract important chemicals from readily available soils. In contrast to conventional metallurgical practice, these extraction processes cannot make substantial use of rare elements. We have designed a thermodynamically viable process and experimentally demonstrated most steps that differ from common practice. To this end we had to develop a small, disposable vacuum furnace system. Our work points to a viable extraction process.

K. LACKNER; D. BUTT; C. WENDT

1999-06-01T23:59:59.000Z

9

Self-assembled photosynthesis-inspired light harvesting material and solar cells containing the same  

DOE Patents (OSTI)

A solar cell is described that comprises: (a) a semiconductor charge separation material; (b) at least one electrode connected to the charge separation material; and (c) a light-harvesting film on the charge separation material, the light-harvesting film comprising non-covalently coupled, self-assembled units of porphyrinic macrocycles. The porphyrinic macrocycles preferably comprise: (i) an intramolecularly coordinated metal; (ii) a first coordinating substituent; and (iii) a second coordinating substituent opposite the first coordinating substituent. The porphyrinic macrocycles can be assembled by repeating intermolecular coordination complexes of the metal, the first coordinating substituent and the second coordinating substituent.

Lindsey, Jonathan S. (Raleigh, NC); Chinnasamy, Muthiah (Raleigh, NC); Fan, Dazhong (Raleigh, NC)

2009-12-15T23:59:59.000Z

10

Controlled Self Assembly of Conjugated Polymer Containing Block Copolymers  

E-Print Network (OSTI)

B. D. ; Segalman, R. A. , Self-assembly of rod-coil blockF. , Synthesis and Self- Assembly of Poly(diethylhexyloxy-p-I. , Three-dimensional self- assembly of rodcoil copolymer

McCulloch, Bryan

2012-01-01T23:59:59.000Z

11

Synthesis and self-assembly of lipid (DMPC)-conjugated gold nanoparticles  

E-Print Network (OSTI)

Bio-conjugated nanomaterials play a promising role in the development of novel supramolecular structures, molecular machines, and biosensing devices. In this study, lipid-conjugated gold nanoparticles were synthesized and allowed to form a self-assembled monolayer structure. The nanoparticles were prepared by a phase transfer method, which involved the reduction of potassium tetrachloroaurate (III) by sodium citrate in an aqueous solution and the simultaneous transfer of the reduced species to an organic medium containing DMPC (1,2-dimyristoyl-sn-glycero-3-phosphocholine). The gold nanoparticles were characterized using UV-Vis spectroscopy and dynamic light scattering (DLS) particle-size analysis. In addition, the resulting nanoparticles were examined using transmission electron microscopy (TEM). The Langmuir-Blodgett (LB) technique was used to assemble the DMPC-capped nanoparticles onto a water subphase at room temperature. The measurement of the compression isotherm confirmed the assemblage of lipid capped gold nanoparticles. This method of synthesis of ordered structures utilizing molecular interactions of lipids will be useful in developing novel metamaterials and nanocircuits.

Subhasish Chatterjee; Markrete Krikorian; Harry D. Gafney; Bonnie Gersten

2012-07-15T23:59:59.000Z

12

Argonne CNM: Materials Synthesis Capabilities  

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

Materials Synthesis Facilities Materials Synthesis Facilities Capabilities biosynthesis View larger image. Biosynthesis Methods Peptide and DNA synthesis (E. Rozhkova, Nanobio Interfaces Group) Nanobio hybrid synthesis (T. Rajh, Nanobio Interfaces Group) Hierarchal assembly View larger image. Hierarchical Assembly Bottom-up polymeric and bio-templating as well as lithographically directed self-assembly (S. Darling, Electronic & Magnetic Materials & Devices Group; E. Rozhkova, Nanobio Interfaces Group) Molecular beam epitaxy View high-resolution image. Molecular Beam Epitaxy Complex oxide nanoferroelectric and nanoferromagnetic materials and devices created using a DCA R450D Custom MBE instrument (A. Bhattacharya, Electronic & Magnetic Materials & Devices Group) Nanoparticle synthesis

13

Self assembling magnetic tiles  

E-Print Network (OSTI)

Self assembly is an emerging technology in the field of manufacturing. Inspired by nature's ability to self assembly proteins from amino acids, this thesis attempts to demonstrate self assembly on the macro-scale. The ...

Rabl, Jessica A. (Jessica Ann)

2006-01-01T23:59:59.000Z

14

Self-Assembly DOI: 10.1002/anie.200602914  

E-Print Network (OSTI)

Self-Assembly DOI: 10.1002/anie.200602914 Electrostatic Self-Assembly of Polystyrene Microspheres--that directs the self- assembly of chemically modified polystyrene microspheres to form three materials for electrostatic self-assembly. We control the contact electrifi- cation of these microspheres

Prentiss, Mara

15

Microfluidic self assembly  

E-Print Network (OSTI)

Recent progress in colloidal science has led to elaborate self-assembled structures whose complexity raises hopes for elaborating new materials. However, the throughputs are extremely low and consequently, the chance to produce materials of industrial interest, for instance, groundbreaking optical devices, harnessing complete three-dimensional band gaps, is markedly low. We discovered a novel hydrodynamic effect that may unlock this bottleneck. It is based on the dipolar flow interactions that build up when droplets are slowed down by the microchannel walls along which they are transported. Coupled with depletion forces, we succeeded to form, via a continuous flow process, at unprecedented speeds and under exquisite control, a rich ensemble of monodisperse planar and tridimensional clusters, such as chains, triangles, diamonds, tetahedrons, heterotrimers, possessing geometrical, chemical, and/or magnetic anisotropies enabling directional bonding. Continuous productions of millions of building blocks per second for elaborating new functional materials can be envisioned.

Bingqing Shen; Joshua Ricouvier; Mathilde Reyssat; Florent Malloggi; Patrick Tabeling

2014-09-14T23:59:59.000Z

16

The Self-Assembly of Particles with Isotropic Interactions.  

E-Print Network (OSTI)

??In recent years there has been much interest in the self-assembly of materials. Much of this research has been focused on the self-assembly of particles… (more)

Kier, von Konigslow

2012-01-01T23:59:59.000Z

17

Self-assembling amphiphilic molecules: Synthesis in simulated interstellar precometary ices  

E-Print Network (OSTI)

94035-1000; Search for Extraterrestrial Intelligence Institute, 2035 Landings Drive, Mountain View, CA formation, volatile, less refractory materials were transported into the inner solar system as comets to the organic inventory neces- sary for the origin of life. Interstellar ices, the building blocks of comets

18

Self-assembling amphiphilic molecules: Synthesis in simulated interstellar/precometary ices  

Science Journals Connector (OSTI)

...Intelligence Institute, 2035 Landings Drive, Mountain View, CA 94043...into the inner solar system as comets and interplanetary dust particles...ices, the building blocks of comets, tie up a large fraction...this material via meteorites, comets, or interplanetary dust...

Jason P. Dworkin; David W. Deamer; Scott A. Sandford; Louis J. Allamandola

2001-01-01T23:59:59.000Z

19

Palladium catalyzed reactions executed on solid-phase peptide synthesis supports for the production of self-assembling peptides embedded with complex organic electronic subunits  

DOE Patents (OSTI)

Methods to synthesize self-assembling peptides embedded with complex organic electronic subunits are provided.

Tovar, John D; Sanders, Allix M

2014-10-28T23:59:59.000Z

20

Self-Assembling Doxorubicin–Tocopherol Succinate Prodrug as a New Drug Delivery System: Synthesis, Characterization, and in Vitro and in Vivo Anticancer Activity  

Science Journals Connector (OSTI)

Gong, X., Moghaddam, M. J., Sagnella, S. M., Conn, C. E., Danon, S. J., Waddington, L. J., and Drummond, C. J. ( 2011) Lyotropic liquid crystalline self-assembly material behavior and nanoparticulate dispersions of a phytanyl pro-drug analogue of capecitabine-a chemotherapy agent ACS Appl. ... Gong, Xiaojuan; Moghaddam, Minoo J.; Sagnella, Sharon M.; Conn, Charlotte E.; Danon, Stephen J.; Waddington, Lynne J.; Drummond, Calum J. ...

Nicolas Duhem; Fabienne Danhier; Vincent Pourcelle; Jean-Marc Schumers; Olivier Bertrand; Cécile S. LeDuff; Stephanie Hoeppener; Ulrich S. Schubert; Jean-François Gohy; Jacqueline Marchand-Brynaert; Véronique Préat

2013-12-11T23:59:59.000Z

Note: This page contains sample records for the topic "materials synthesis self-assembly" 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

Self assembled multi-layer nanocomposite of graphene and metal oxide materials  

DOE Patents (OSTI)

Nanocomposite materials having at least two layers, each layer consisting of one metal oxide bonded to at least one graphene layer were developed. The nanocomposite materials will typically have many alternating layers of metal oxides and graphene layers, bonded in a sandwich type construction and will be incorporated into an electrochemical or energy storage device.

Liu, Jun; Aksay, Ilhan A; Choi, Daiwon; Kou, Rong; Nie, Zimin; Wang, Donghai; Yang, Zhenguo

2013-10-22T23:59:59.000Z

22

Self assembled multi-layer nanocomposite of graphene and metal oxide materials  

SciTech Connect

Nanocomposite materials having at least two layers, each layer consisting of one metal oxide bonded to at least one graphene layer were developed. The nanocomposite materials will typically have many alternating layers of metal oxides and graphene layers, bonded in a sandwich type construction and will be incorporated into an electrochemical or energy storage device.

Liu, Jun; Choi, Daiwon; Kou, Rong; Nie, Zimin; Wang, Donghai; Yang, Zhenguo

2014-09-16T23:59:59.000Z

23

Materials Synthesis and Characterization | Center for Functional  

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

Materials Synthesis and Characterization Facility Materials Synthesis and Characterization Facility materials synthesis The Materials Synthesis and Characterization Facility includes laboratories for producing nanostructured materials and characterizing their basic structural, chemical and optical properties. The facility staff has significant experience in solution-phase chemistry of nanocrystal/nanowire materials, synthesis of polymer materials by a range of controlled polymerization techniques; inorganic synthesis by chemical vapor deposition, physical vapor deposition, and atomic layer deposition. The staff includes experts in techniques of nanoscale fabrication by self-assembly. The facility also supports infrastructure and expertise in solution-based processing of organic thin films, including tools for spin-casting, thermal processing, and UV/ozone treatment.

24

Ordered porous mesostructured materials from nanoparticle-block copolymer self-assembly  

DOE Patents (OSTI)

The invention provides mesostructured materials and methods of preparing mesostructured materials including metal-rich mesostructured nanoparticle-block copolymer hybrids, porous metal-nonmetal nanocomposite mesostructures, and ordered metal mesostructures with uniform pores. The nanoparticles can be metal, metal alloy, metal mixture, intermetallic, metal-carbon, metal-ceramic, semiconductor-carbon, semiconductor-ceramic, insulator-carbon or insulator-ceramic nanoparticles, or combinations thereof. A block copolymer/ligand-stabilized nanoparticle solution is cast, resulting in the formation of a metal-rich (or semiconductor-rich or insulator-rich) mesostructured nanoparticle-block copolymer hybrid. The hybrid is heated to an elevated temperature, resulting in the formation of an ordered porous nanocomposite mesostructure. A nonmetal component (e.g., carbon or ceramic) is then removed to produce an ordered mesostructure with ordered and large uniform pores.

Warren, Scott; Wiesner, Ulrich; DiSalvo, Jr., Francis J

2013-10-29T23:59:59.000Z

25

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

26

Nanotechnology Applications in Self-Assembly and DNA Computing.  

E-Print Network (OSTI)

??Nanotechnology spans and merges very diverse areas from device physics to molecular self-assembly, from development of new materials with nanoscale dimensions to manipulating existing materials… (more)

Akin, Hayri Engin

2011-01-01T23:59:59.000Z

27

New Multi-Ferrocenyl- and Multi-Ferricenyl- Materials via Coordination-Driven Self-Assembly and via Charge-Driven Electro-Crystallization  

Science Journals Connector (OSTI)

New Multi-Ferrocenyl- and Multi-Ferricenyl- Materials via Coordination-Driven Self-Assembly and via Charge-Driven Electro-Crystallization ... At the molecular level the building-block for the quantum-dot cellular automata is a symmetric mixed-valence complex in which the binary states 0 or 1 are represented by the location of a mobile electron (or a hole) at one of the two metal centers. ... A recently identified family of ferroelectric structures is based on intermolecular charge transfer crystals,(38) where donor (tetrathiafulvalene) and acceptor (p-chloranil) molecules cocrystallize in an alternating fashion known as mixed stack. ...

Hakikulla H. Shah; Rayya A. Al-Balushi; Mohammed K. Al-Suti; Muhammad S. Khan; Christopher H. Woodall; Anna L. Sudlow; Paul R. Raithby; Gabriele Kociok-Köhn; Kieran C. Molloy; Frank Marken

2013-10-09T23:59:59.000Z

28

Directed Self-Assembly of Nanodispersions  

SciTech Connect

Directed self-assembly promises to be the technologically and economically optimal approach to industrial-scale nanotechnology, and will enable the realization of inexpensive, reproducible and active nanostructured materials with tailored photonic, transport and mechanical properties. These new nanomaterials will play a critical role in meeting the 21st century grand challenges of the US, including energy diversity and sustainability, national security and economic competitiveness. The goal of this work was to develop and fundamentally validate methods of directed selfassembly of nanomaterials and nanodispersion processing. The specific aims were: 1. Nanocolloid self-assembly and interactions in AC electric fields. In an effort to reduce the particle sizes used in AC electric field self-assembly to lengthscales, we propose detailed characterizations of field-driven structures and studies of the fundamental underlying particle interactions. We will utilize microscopy and light scattering to assess order-disorder transitions and self-assembled structures under a variety of field and physicochemical conditions. Optical trapping will be used to measure particle interactions. These experiments will be synergetic with calculations of the particle polarizability, enabling us to both validate interactions and predict the order-disorder transition for nanocolloids. 2. Assembly of anisotropic nanocolloids. Particle shape has profound effects on structure and flow behavior of dispersions, and greatly complicates their processing and self-assembly. The methods developed to study the self-assembled structures and underlying particle interactions for dispersions of isotropic nanocolloids will be extended to systems composed of anisotropic particles. This report reviews several key advances that have been made during this project, including, (1) advances in the measurement of particle polarization mechanisms underlying field-directed self-assembly, and (2) progress in the directed self-assembly of anisotropic nanoparticles and their unique physical properties.

Furst, Eric M [University of Delaware] [University of Delaware

2013-11-15T23:59:59.000Z

29

pH- and ionic-strength-induced structural changes in poly(acrylic acid)-lipid-based self-assembled materials.  

SciTech Connect

The effect of a polyanion introduced as a lipid conjugate (poly(acrylic acid)- dimyristoyl-sn-glycero-3-phosphoethanolamine, PAA-DMPE) on the structure of a self-assembled, biomembrane mimetic has been evaluated using synchrotron small-angle X-ray scattering (SAXS). At high grafting density (8-11 mol.%), the PAA chains were found to produce significant changes in structure in response to changes in pH and electrolyte composition. At low pH and in the absence of salt (NaCl), the neutral PAA chains adopt a coil conformational state that leads to the formation of a swollen lamellar structure. Upon the addition of salt at low to intermediate pH values, two lamellar phases, a collapsed and an expanded structure, coexist. Finally, when the polymer is fully ionized (at high pH), the extended conformation of the polymer generates a cubic phase. The results of this study contribute to an understanding of how polyelectrolytes may ultimately be harnessed for the preparation of self-assembling materials responsive to external stimuli.

Crisci, A.; Hay, D. N. T.; Seifert, S.; Firestone, M. A.

2009-01-01T23:59:59.000Z

30

Synthesis of visible light emitting self assembled Ge nanocrystals embedded within a SiO{sub 2} matrix  

SciTech Connect

As-grown light emitting self-assembled Ge nanocrystals (Ge-NCs) embedded in a SiO{sub 2} matrix were produced via a sequential deposition process of SiO{sub 2}/Ge/SiO{sub 2} layers employing a reactive radio frequency sputtering technique. Obtained Ge-NCs show a crystallographic phase, the proportion, size, quality, and specific orientation of which are determined by the oxygen partial pressure. Photoluminescence (PL) spectra indicate that the size distribution of Ge-NCs is reduced and centered on about 8 nm when higher oxygen partial pressure is employed; the formation of Ge-NCs is corroborated by transmission electron microscopy measurements, and their sizes are consistent with estimates from PL measurements. Resistivity measurements are explained by a near neighbors hopping process, with specific features depending on the Ge-NCs' size. The features of PL and resistivity measurements indicate that there is no appreciable dependence of the number of interfacial defects on the oxygen partial pressure.

Hernandez-Hernandez, A.; De Moure-Flores, F.; Quinones-Galvan, J. G.; Santoyo-Salazar, J.; Melendez-Lira, M. [Departamento de Fisica, Centro de Investigacion y de Estudios Avanzados del Instituto Politecnico Nacional, A.P. 14740, C.P. 07300, Mexico, Distrito Federal (Mexico); Rangel-Kuoppa, V. T. [Institute of Semiconductor and Solid State Physics, Johannes Kepler Universitaet, A-4040 Linz (Austria); Plach, Thomas [Christian Doppler Laboratory for Microscopic and Spectroscopic Material Characterization, Center for Surface and Nanoanalytics, Johannes Kepler Universitaet, A-4040 Linz (Austria); Zapata-Torres, M. [Centro de Investigacion en Ciencia Aplicada y Tecnologia Avanzada, Unidad Legaria IPN, Calzada Legaria 694, Col. Irrigacion, 11500 Mexico, Distrito Federal (Mexico); Hernandez-Hernandez, L. A. [Escuela Superior de Fisica y Matematicas del Instituto Politecnico Nacional, Edificio 9 U.P. Adolfo Lopez Mateos, Col. San Pedro Zacatenco, C.P. 07730 (Mexico)

2012-02-15T23:59:59.000Z

31

Search methods for tile sets in patterned DNA self-assembly$  

E-Print Network (OSTI)

Search methods for tile sets in patterned DNA self-assembly$ Mika G¨o¨os1 , Tuomo Lempi¨ainen1 for Information Technology HIIT Aalto University, Finland Abstract The Pattern self-Assembly Tile set Synthesis (PATS) problem, which arises in the theory of structured DNA self-assembly, is to determine a set

Orponen, Pekka

32

Dynamics, self-assembly, and function of multicomponent coordination supramolecular systems.  

E-Print Network (OSTI)

??Self-assembly allows for the preparation of highly complex molecular and supramolecular systems from relatively simple starting materials. Self-assembled supramolecules are typically constructed by combining complementary… (more)

Zheng, Yaorong

2011-01-01T23:59:59.000Z

33

Synthesis and Self-Assembly Behavior of Poly(acrylic Acid)-b-Poly(l-Amino Acid) System  

E-Print Network (OSTI)

The talk will present the synthesis and characterization of a new class of hybrid amphiphilic system between an electrolyte polyacrylic acid (PAA) synthetic segment, and a hydrophobic beta-sheet forming peptide segment, ...

Sinaga, Akasta

34

Self assembly of complex structures.  

E-Print Network (OSTI)

??The state of the art in artificial micro self assembly concepts are reviewed. The history of assembly is presented with a comparison to macro assembly,… (more)

Nellis, Michael

2007-01-01T23:59:59.000Z

35

Argonne CNM Highlight: Nanomechanical Resonator Self-Assembled from  

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

Nanomechanical Resonator Self-Assembled from Nanoparticles Nanomechanical Resonator Self-Assembled from Nanoparticles thermal motion of self-assembled membranes Power spectral distribution of the thermal motion of membranes self-assembled from gold nanoparticles taken at the center (black) and halfway along the radius (red) in air; inset shows TEM images of the membranes Membrane motion under mechanical excitation Phase-sensitive image of one mode of membrane motion under mechanical excitation. The self-assembly of nanoscale structures from functional nanoparticles has provided a powerful path to developing devices with emergent properties from the bottom up. Users from the University of Chicago, together with researchers from the University of Melbourne and CNM's Electronic & Magnetic Materials & Devices Group, demonstrate that free-standing sheets

36

Self-assembled three-dimensional conducting network of single-wall carbon nanotubes  

E-Print Network (OSTI)

Self-assembled three-dimensional conducting network of single-wall carbon nanotubes Graciela B (Received 11 March 2004; accepted 8 June 2004) We described here the self-assembling of a three-dimensional array of single-wall nanotubes (SWNTs). The distinctive choice of materials allowed for the self-assembly

Hone, James

37

Self-Assembly and Disassembly of Regioregular, Water Soluble Polythiophenes: Chemoselective  

E-Print Network (OSTI)

Self-Assembly and Disassembly of Regioregular, Water Soluble Polythiophenes: Chemoselective% head-to-tail (HT) couplings1,2 has led to the discovery of materials that self-assemble both aggregation is precursive to a microcrystalline, self-assembled structure which has been characterized by X

McCullough, Richard D.

38

Functionalized Methionine Polypeptides And Their Self Assembly  

E-Print Network (OSTI)

1.1: Schematic showing the self-assembly of M Ox (rac-L) yas well as their self-assembly into micelles. Both poly((Polypeptides And Their Self Assembly A thesis submitted in

Higgins, Robin

2013-01-01T23:59:59.000Z

39

Metal-directed protein self-assembly  

E-Print Network (OSTI)

Metal-Directed Protein Self- Assembly. Acc. Chem. Res. 43,Metal-directed protein self-assembly. Acc. Chem. Res. 43,Metal- mediated self-assembly of protein superstructures:

Salgado. Eric N.

2010-01-01T23:59:59.000Z

40

Self-assembled nanolaminate coatings (SV)  

SciTech Connect

Sandia National Laboratories (Sandia) and Lockheed Martin Aeronautics (LM Aero) are collaborating to develop affordable, self-assembled, nanocomposite coatings and associated fabrication processes that will be tailored to Lockheed Martin product requirements. The purpose of this project is to develop a family of self-assembled coatings with properties tailored to specific performance requirements, such as antireflective (AR) optics, using Sandia-developed self-assembled techniques. The project met its objectives by development of a simple and economic self-assembly processes to fabricate multifunctional coatings. Specifically, materials, functionalization methods, and associated coating processes for single layer and multiple layers coatings have been developed to accomplish high reflective coatings, hydrophobic coatings, and anti-reflective coatings. Associated modeling and simulations have been developed to guide the coating designs for optimum optical performance. The accomplishments result in significant advantages of reduced costs, increased manufacturing freedom/producibility, improved logistics, and the incorporation of new technology solutions not possible with conventional technologies. These self-assembled coatings with tailored properties will significantly address LMC's needs and give LMC a significant competitive lead in new engineered materials. This work complements SNL's LDRD and BES programs aimed at developing multifunctional nanomaterials for microelectronics and optics as well as structure/property investigations of self-assembled nanomaterials. In addition, this project will provide SNL with new opportunities to develop and apply self-assembled nanocomposite optical coatings for use in the wavelength ranges of 3-5 and 8-12 micrometers, ranges of vital importance to military-based sensors and weapons. The SANC technologies will be applied to multiple programs within the LM Company including the F-35, F-22, ADP (Future Strike Bomber, UAV, UCAV, etc.). The SANC technologies will establish LMA and related US manufacturing capability for commercial and military applications therefore reducing reliance on off-shore development and production of related critical technologies. If these technologies are successfully licensed, production of these coatings in manufactory will create significant technical employment opportunities.

Fan, H.

2012-03-01T23:59:59.000Z

Note: This page contains sample records for the topic "materials synthesis self-assembly" 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

Self assembly of acetylcholinesterase on a goldnanoparticles...  

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

Self assembly of acetylcholinesterase on a gold nanoparticles–graphene nanosheet hybrid for organophosphate pesticide Self assembly of acetylcholinesterase on a gold...

42

Self-assembly of colloidal lattices at pickering emulsion interfaces.  

E-Print Network (OSTI)

??Self-assembly of colloidal lattices has been of tremendous interest due to their potential applications in advanced materials, sensors, and electro-optical devices. However, most research has… (more)

Guttula, Shashidhar M.

2007-01-01T23:59:59.000Z

43

Self-assembly of linear-dendritic diblock copolymers  

E-Print Network (OSTI)

Linear-dendritic diblock copolymers combine the properties of dendritic macromolecules with the morphology of block copolymers, making it possible to create nanostructured materials which self assemble in the bulk state ...

Johnson, Mark Alan, 1975-

2002-01-01T23:59:59.000Z

44

Fusion of Self-Assembling Amphipathic Oligopeptides with Cyclodextrin Glycosyltransferase Improves 2-O-d-Glucopyranosyl-l-Ascorbic Acid Synthesis with Soluble Starch as the Glycosyl Donor  

Science Journals Connector (OSTI)

...research-article Enzymology and Protein Engineering Fusion of Self-Assembling Amphipathic Oligopeptides...glycosyl donors. The results showed that two fusion enzymes, SAP5-CGTase and SAP6-CGTase...Enzymatic characterization of the two fusion enzymes was performed, and kinetics analysis...

Ruizhi Han; Jianghua Li; Hyun-dong Shin; Rachel R. Chen; Long Liu; Guocheng Du; Jian Chen

2014-05-23T23:59:59.000Z

45

INTRODUCTION 1.1 Self Assembly  

E-Print Network (OSTI)

CHAPTER 1 INTRODUCTION 1.1 Self Assembly Nearly all complex biological systems are self-assembled to some degree: from these systems came the inspiration for directed self-assembly; that, by manipulating the same forces governing natural self-assembly, researchers would be able to decide at a basic level what

Braun, Paul

46

Molecular Computing with DNA Self-Assembly  

E-Print Network (OSTI)

Molecular Computing with DNA Self-Assembly Urmi Majumder #12;Self-Assembly in Nature #12;Key to DNA for Molecular Computing with DNA Self-Assembly Compact: Small library of assembly primitives Complex: Capable in Tiling Assembly: vitroation tural DNA self-assembly has powerful echanisms for error correction

Reif, John H.

47

E-Print Network 3.0 - alkanethiol-based self-assembled monolayers...  

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

materials, self- assembled monolayers and biomembranes. 36 Professors from six Quebec... Research Program CSACSCRMAA is a research Centre based on a method of structure...

48

DNA origami: A quantum leap for self assembly of complex structures  

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

of functional materials by self-assembly is one of the fundamental visions of nanotechnology. Major steps towards this goal have been achieved using DNA as a programmable...

49

Hierarchical Nanoparticle Ensembles Synthesized by Liquid Phase Directed Self-Assembly  

E-Print Network (OSTI)

Hierarchical Nanoparticle Ensembles Synthesized by Liquid Phase Directed Self-Assembly J. D, nanoparticle radius control is demonstrated using a micrometer scale switch. KEYWORDS: Self-assembly, directed assembly, Rayleigh-Plateau, volume-of-Fluid, hierarchical, nanoparticle assembly Chemical synthesis methods

Kondic, Lou

50

Self-Assembly of Polymer Nano-Elements on Sapphire  

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

Self-Assembly of Polymer Self-Assembly of Polymer Nano-Elements on Sapphire Self-Assembly of Polymer Nano-Elements on Sapphire Print Wednesday, 25 March 2009 00:00 Self-assembly of polymers promises to vastly improve the properties and manufacturing processes of nanostructured materials, since self-assembly is highly parallel, quite versatile, and easy to implement. Especially promising are novel compounds known as block copolymers, formed by two chemically different polymers that are linked together. Guided patterned arrays have been produced using electron-beam lithographic techniques or nano-imprint lithography, but these methods are painstaking, and they have not yet been able to produce perfect surfaces over large areas. Recently, a group of researchers used faceted surfaces of commercially available sapphire wafers to guide the self-assembly of block copolymer microdomains. Grazing-incidence small-angle x-ray scattering (GISAXS) at ALS Beamline 7.3.3 verified the arrays' quasi long-range crystalline order over arbitrarily large wafer surfaces. It's expected that this new method of producing highly ordered macroscopic arrays of nanoscopic elements will revolutionize the microelectronic and storage industries and perhaps others, such as photovoltaics.

51

On the mathematics of self-assembly.  

E-Print Network (OSTI)

??Self-assembly is the ubiquitous process by which simple objects come together under simple rules to form more complex objects. Self-assembly occurs in nature to produce… (more)

Reishus, Dustin

2009-01-01T23:59:59.000Z

52

On the mathematics of self-assembly.  

E-Print Network (OSTI)

?? Self-assembly is the ubiquitous process by which simple objects come together under simple rules to form more complex objects. Self-assembly occurs in nature to… (more)

Reishus, Dustin

2010-01-01T23:59:59.000Z

53

Molecular Coordination of Hierarchical Self-Assembly  

E-Print Network (OSTI)

Molecular Coordination of Hierarchical Self-Assembly Technical Report UT-CS-10-662 Bruce J. Mac to self-assemble into multiscale complex hierarchical systems. Keywords: algorithmic assembly, embodied, nano communication, nanofabrication, nanotechnology, Moore's Law, self-assembly, self-organization. 1

MacLennan, Bruce

54

Self-assembled DNA Structures for Nanoconstruction  

E-Print Network (OSTI)

Self-assembled DNA Structures for Nanoconstruction Hao Yan, Peng Yin, Sung Ha Park, Hanying Li methods based on DNA self-assembly. Here we review our recent experimental progress to utilize novel DNA nanostructures for self-assembly as well as for templates in the fabrication of functional nano

Yin, Peng

55

SELF-ASSEMBLING AUTOMATA: A MODEL OF CONFORMATIONAL SELF-ASSEMBLY  

E-Print Network (OSTI)

SELF-ASSEMBLING AUTOMATA: A MODEL OF CONFORMATIONAL SELF-ASSEMBLY KAZUHIRO SAITOU Department An abstract model of self-assembling systems is presented where assembly instruc- tions are written as conformational switches ­ local rules that specify conforma- tional changes of a component. The model, the self-assembling

Saitou, Kazuhiro "Kazu"

56

Triangular and Hexagonal Tile Self-Assembly Systems Triangular and Hexagonal Tile Self-Assembly Systems  

E-Print Network (OSTI)

Triangular and Hexagonal Tile Self-Assembly Systems Triangular and Hexagonal Tile Self-Assembly theoretical aspects of the self-assembly of triangular tiles, in particular, right triangular tiles and equilateral triangular tiles, and the self-assembly of hexagonal tiles. We show that triangular tile assembly

Kari, Lila

57

Composition and method for self-assembly and mineralization of peptide-amphiphiles  

DOE Patents (OSTI)

The present invention is directed to a composition useful for making homogeneously mineralized self assembled peptide-amphiphile nanofibers and nanofiber gels. The composition is generally a solution comprised of a positively or negatively charged peptide-amphiphile and a like signed ion from the mineral. Mixing this solution with a second solution containing a dissolved counter-ion of the mineral and/or a second oppositely charged peptide amphiphile, results in the rapid self assembly of the peptide-amphiphiles into a nanofiber gel and templated mineralization of the ions. Templated mineralization of the initially dissolved mineral cations and anions in the mixture occurs with preferential orientation of the mineral crystals along the fiber surfaces within the nanofiber gel. One advantage of the present invention is that it results in homogenous growth of the mineral throughout the nanofiber gel. Another advantage of the present invention is that the nanofiber gel formation and mineralization reactions occur in a single mixing step and under substantially neutral or physiological pH conditions. These homogeneous nanostructured composite materials are useful for medical applications especially the regeneration of damaged bone in mammals. This invention is directed to the synthesis of peptide-amphiphiles with more than one amphiphilic moment and to supramolecular compositions comprised of such multi-dimensional peptide-amphiphiles. Supramolecular compositions can be formed by self assembly of multi-dimensional peptide-amphiphiles by mixing them with a solution comprising a monovalent cation.

Stupp, Samuel I. (Chicago, IL); Beniash, Elia (Newton, MA); Hartgerink, Jeffrey D. (Pearland, TX)

2012-02-28T23:59:59.000Z

58

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 Polymer Nano-Elements on Sapphire Print Self-assembly of polymers promises to vastly improve the properties and manufacturing processes of nanostructured materials, since self-assembly is highly parallel, quite versatile, and easy to implement. Especially promising are novel compounds known as block copolymers, formed by two chemically different polymers that are linked together. Guided patterned arrays have been produced using electron-beam lithographic techniques or nano-imprint lithography, but these methods are painstaking, and they have not yet been able to produce perfect surfaces over large areas. Recently, a group of researchers used faceted surfaces of commercially available sapphire wafers to guide the self-assembly of block copolymer microdomains. Grazing-incidence small-angle x-ray scattering (GISAXS) at ALS Beamline 7.3.3 verified the arrays' quasi long-range crystalline order over arbitrarily large wafer surfaces. It's expected that this new method of producing highly ordered macroscopic arrays of nanoscopic elements will revolutionize the microelectronic and storage industries and perhaps others, such as photovoltaics.

59

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 Polymer Nano-Elements on Sapphire Print Self-assembly of polymers promises to vastly improve the properties and manufacturing processes of nanostructured materials, since self-assembly is highly parallel, quite versatile, and easy to implement. Especially promising are novel compounds known as block copolymers, formed by two chemically different polymers that are linked together. Guided patterned arrays have been produced using electron-beam lithographic techniques or nano-imprint lithography, but these methods are painstaking, and they have not yet been able to produce perfect surfaces over large areas. Recently, a group of researchers used faceted surfaces of commercially available sapphire wafers to guide the self-assembly of block copolymer microdomains. Grazing-incidence small-angle x-ray scattering (GISAXS) at ALS Beamline 7.3.3 verified the arrays' quasi long-range crystalline order over arbitrarily large wafer surfaces. It's expected that this new method of producing highly ordered macroscopic arrays of nanoscopic elements will revolutionize the microelectronic and storage industries and perhaps others, such as photovoltaics.

60

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 Polymer Nano-Elements on Sapphire Print Self-assembly of polymers promises to vastly improve the properties and manufacturing processes of nanostructured materials, since self-assembly is highly parallel, quite versatile, and easy to implement. Especially promising are novel compounds known as block copolymers, formed by two chemically different polymers that are linked together. Guided patterned arrays have been produced using electron-beam lithographic techniques or nano-imprint lithography, but these methods are painstaking, and they have not yet been able to produce perfect surfaces over large areas. Recently, a group of researchers used faceted surfaces of commercially available sapphire wafers to guide the self-assembly of block copolymer microdomains. Grazing-incidence small-angle x-ray scattering (GISAXS) at ALS Beamline 7.3.3 verified the arrays' quasi long-range crystalline order over arbitrarily large wafer surfaces. It's expected that this new method of producing highly ordered macroscopic arrays of nanoscopic elements will revolutionize the microelectronic and storage industries and perhaps others, such as photovoltaics.

Note: This page contains sample records for the topic "materials synthesis self-assembly" 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

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 Polymer Nano-Elements on Sapphire Print Self-assembly of polymers promises to vastly improve the properties and manufacturing processes of nanostructured materials, since self-assembly is highly parallel, quite versatile, and easy to implement. Especially promising are novel compounds known as block copolymers, formed by two chemically different polymers that are linked together. Guided patterned arrays have been produced using electron-beam lithographic techniques or nano-imprint lithography, but these methods are painstaking, and they have not yet been able to produce perfect surfaces over large areas. Recently, a group of researchers used faceted surfaces of commercially available sapphire wafers to guide the self-assembly of block copolymer microdomains. Grazing-incidence small-angle x-ray scattering (GISAXS) at ALS Beamline 7.3.3 verified the arrays' quasi long-range crystalline order over arbitrarily large wafer surfaces. It's expected that this new method of producing highly ordered macroscopic arrays of nanoscopic elements will revolutionize the microelectronic and storage industries and perhaps others, such as photovoltaics.

62

Transport and Self-Assembly in Molecular Nanosystems  

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

Transport and Transport and Self-Assembly in Molecular Nanosystems Transport and Self-Assembly in Molecular Nanosystems Key Challenges: Use classical molecular dynamics and coarse grain molecular dynamics to enable "bottom-up" material design of a wide variety of nanostructures possessing a wealth of unique properties. The goal is to guide and inform synthetic investigations and understand molecular and electronic transport, self-assembly, catalysis, and other phenomena. Ab-initio electronic structure and quantum transport methods are also used. The modeling often involves large systems (500,000 atoms) and cooperative use of several codes such as Gaussian and NAMD. Free-energy calculations typically require good ensemble averaging and therefore, must be performed

63

A Design Path for Hierarchical Self-Assembly of Patchy Colloids  

E-Print Network (OSTI)

Patchy colloids are promising candidates for building blocks in directed self-assembly. To be successful the surface patterns need to both be simple enough to be synthesized, while feature-rich enough to cause the colloids to self-assemble into desired structures. Achieving this is a challenge for traditional synthesis methods. Recently it has been suggested that the surface pattern themselves can be made to self-assemble. In this paper we show that a wide range of functional structures can be made to self-assemble using this approach. More generally we present a design path for hierarchical targeted self-assembly of patchy colloids. At the level of the surface structure, we use a predictive method utilizing universality of patterns of stripes and spots, coupled with stoichiometric constraints, to cause highly specific and functional patterns to self-assemble on spherical surfaces. We use a minimalistic model of an alkanethiol on gold as a model system and demonstrate that, even with limited control over the interaction between surface constituents, we can obtain patterns that causes the colloids themselves to self-assemble into various complex geometric structures. We demonstrate how variations of the same design path cause in-silico self-assembly of strings, membranes, cubic and spherical aggregates, as well as various crystalline patterns.

Erik Edlund; Oskar Lindgren; Martin Nilsson Jacobi

2014-05-12T23:59:59.000Z

64

NEST Scientific Report 2007-2009 Transport phenomena in self-assembled nanowires  

E-Print Network (OSTI)

NEST Scientific Report 2007-2009 Transport phenomena in self-assembled nanowires 21 S elf incompatible materials can be combined into advanced ­ in some cases unprecedented ­ nanostructures and charge transport in self-assembled structures as well as Josephson coupling in devices combining

Abbondandolo, Alberto

65

Synthesis of self-assembled layered double hydroxides/carbon composites by in situ solvothermal method and their application in capacitors  

SciTech Connect

Nickel-aluminum layered double hydroxides/carbon (Ni-Al LDHs/C) composites have been successfully fabricated via a facile in situ water-ethanol system. LDHs nanosheets could highly disperse on the surface of colloidal carbonaceous spheres through the interfacial electrostatic force. Ni-Al LDHs/C composite electrode prepared at 50% ethanol system exhibits the highest capacitance of 1064 F g{sup -1} at a current of 2.5 A g{sup -1}, leading to a significant improvement in relation to each individual counterpart (3.5 and 463 F g{sup -1} for carbon and Ni-Al LDHs at 2.5 A g{sup -1}, respectively). And a possible mechanism was proposed for the formation of the composites. Highlights: Black-Right-Pointing-Pointer Ni-Al LDHs/C composites have been self-assembled by an in situ solvothermal method. Black-Right-Pointing-Pointer A possible growth mechanism to explain the composite is proposed. Black-Right-Pointing-Pointer Ni-Al LDHs/C composites display better electrochemical performance.

Wei, Jinbo [Key Laboratory of Superlight Material and Surface Technology, Ministry of Education, Harbin Engineering University, Harbin 150001 (China)] [Key Laboratory of Superlight Material and Surface Technology, Ministry of Education, Harbin Engineering University, Harbin 150001 (China); Wang, Jun, E-mail: junwangzhqw1888@sohu.com [Key Laboratory of Superlight Material and Surface Technology, Ministry of Education, Harbin Engineering University, Harbin 150001 (China)] [Key Laboratory of Superlight Material and Surface Technology, Ministry of Education, Harbin Engineering University, Harbin 150001 (China); Song, Yanchao; Li, Zhanshuang; Gao, Zan; Mann, Tom; Zhang, Milin [Key Laboratory of Superlight Material and Surface Technology, Ministry of Education, Harbin Engineering University, Harbin 150001 (China)] [Key Laboratory of Superlight Material and Surface Technology, Ministry of Education, Harbin Engineering University, Harbin 150001 (China)

2012-12-15T23:59:59.000Z

66

Self-Assembly of Layered Membranes  

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

| 2004 | 2003 | 2002 2001 | 2000 | 1998 | Subscribe to APS Science Highlights rss feed Self-Assembly of Layered Membranes October 27, 2014 Bookmark and Share Fig. 1. Schematic...

67

Automated self-assembly programming paradigm.  

E-Print Network (OSTI)

??Self-assembly is a ubiquitous process in nature in which a disordered set of components autonomously assemble into a complex and more ordered structure. Components interact… (more)

Li, Lin

2008-01-01T23:59:59.000Z

68

Experimental study of the residual stress-induced self-assembly of MEMS structures during deposition  

E-Print Network (OSTI)

The possibility of using residual stresses favorably as a means of self-assembling MEMS during material deposition is experimentally investigated. Two atomic force microscope cantilevers are placed in contact at their free ends. Material...

Kim, Sang-Hyun

2005-11-01T23:59:59.000Z

69

Microfluidic mixers: from microfabricated to self-assembling devices  

Science Journals Connector (OSTI)

...of possible applications of self-assembly in microfluidics. Microfluidics|Mixing|Micromixers|Self-Assembly| Microfluidic...of possible applications of self-assembly in microfluidics. | Department of Chemical and Biological Engineering...

2004-01-01T23:59:59.000Z

70

Self-assembling functionalized single-walled carbon nanotubes  

E-Print Network (OSTI)

and L. Kavan (2009). "Self-Assemblies of Cationic PorphyrinsLi and Y. Ji (2005). "Self- assembly of base-functionalizedH. Bock (2008). "Directed Self-Assembly of Surfactants in

Gao, Yan

2011-01-01T23:59:59.000Z

71

Septin Self-Assembly: Plasticity and Protein Scaffolding  

E-Print Network (OSTI)

Septin Self-Assembly: Plasticity and Protein Scaffolding BySpring 2012 Septin Self-Assembly: Plasticity and ProteinIII Abstract Septin Self-Assembly: Plasticity and Protein

Garcia, III, Galo

2012-01-01T23:59:59.000Z

72

Solution Self-Assembly of Sequence Specific Biomimetic Polymers  

E-Print Network (OSTI)

J. D. , In vitro self- assembly from a simple protein ofR. N. , Hierarchical Self-Assembly of a Biomimetic DiblockC. R. , Hierarchical self-assembly of F-actin and cationic

Murnen, Hannah

2012-01-01T23:59:59.000Z

73

Self-Assembled, Nanostructured Carbon for Energy Storage and...  

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

Self-Assembled, Nanostructured Carbon for Energy Storage and Water Treatment Self-Assembled, Nanostructured Carbon for Energy Storage and Water Treatment nanostructuredcarbon.pdf...

74

Biosensor Based on Self-Assembling Acetylcholinesterase on Carbon...  

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

Biosensor Based on Self-Assembling Acetylcholinesterase on Carbon Nanotubes for Flow injectionAmperometric Detection of Biosensor Based on Self-Assembling Acetylcholinesterase on...

75

Amperometric Glucose Biosensor Based on Self-Assembling Glucose...  

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

Glucose Biosensor Based on Self-Assembling Glucose Oxidase on Carbon Nanotubes. Amperometric Glucose Biosensor Based on Self-Assembling Glucose Oxidase on Carbon Nanotubes....

76

Green approach for self-assembly of platinum nanoparticles into...  

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

Green approach for self-assembly of platinum nanoparticles into nanowires in aqueous glucose solutions. Green approach for self-assembly of platinum nanoparticles into nanowires in...

77

Symmetry-Driven Spontaneous Self-assembly of Nanoscale Ceria...  

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

Symmetry-Driven Spontaneous Self-assembly of Nanoscale Ceria Building Blocks to Fractal Super-octahedra. Symmetry-Driven Spontaneous Self-assembly of Nanoscale Ceria Building...

78

Simulation and Modeling of Self-Assembled Monolayers of Carboxylic...  

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

and Modeling of Self-Assembled Monolayers of Carboxylic Acid Thiols on Flat and Nanoparticle Gold Surfaces. Simulation and Modeling of Self-Assembled Monolayers of Carboxylic Acid...

79

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...

80

Directing Self-Assembly of Heterogeneous NanoSystems | MIT-Harvard...  

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

Directing Self-Assembly of Heterogeneous NanoSystems December 5, 2013 at 3pm36-428 Alfredo Alexander-Katz Department of Material Science and Engineering, Massachusetts Institute...

Note: This page contains sample records for the topic "materials synthesis self-assembly" 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

Universality in algorithmic self-assembly.  

E-Print Network (OSTI)

??Tile-based self-assembly is a model of "algorithmic crystal growth" in which square "tiles" represent molecules that bind to each other via specific and variable-strength bonds… (more)

Summers, Scott

2010-01-01T23:59:59.000Z

82

Self-Assembly of Organic Nanostructures  

E-Print Network (OSTI)

This dissertation focuses on investigating the morphologies, optical and photoluminescence properties of porphyrin nanostructures prepared by the self-assembly method. The study is divided into three main parts. In the first part, a large variety...

Wan, Albert

2012-10-19T23:59:59.000Z

83

One-dimensional staged self-assembly  

E-Print Network (OSTI)

We introduce the problem of staged self-assembly of one-dimensional nanostructures, which becomes interesting when the elements are labeled (e.g., representing functional units that must be placed at specific locations). ...

Demaine, Erik D.

84

Autonomous Programmable Biomolecular Devices Using Self-Assembled DNA Nanostructures  

E-Print Network (OSTI)

-Assembled DNA Nanostructures: · use synthetic DNA to self-assemble into DNA nanostructure devices. Goals

Reif, John H.

85

Hypergraph Automata: A Theoretical Model for Patterned Self-assembly  

E-Print Network (OSTI)

Hypergraph Automata: A Theoretical Model for Patterned Self-assembly Lila Kari, Steffen Kopecki Abstract. Patterned self-assembly is a process whereby coloured tiles self-assemble to build a rectangular coloured pattern. We propose self- assembly (SA) hypergraph automata as an automata-theoretic model

Kari, Lila

86

Self-Assembled Computer Architecture: Design and Fabrication Theory  

E-Print Network (OSTI)

Self-Assembled Computer Architecture: Design and Fabrication Theory by Christopher L. Dwyer CHRISTOPHER L. DWYER: Self-Assembled Computer Architecture: Design and Fabrication Theory (under the direction using self-assembling electronic circuitry. A DNA-guided self-assembly method, inspired by discoveries

Whitton, Mary C.

87

Confined Self-Assembly of Block An-Chang Shi  

E-Print Network (OSTI)

Confined Self-Assembly of Block Copolymers An-Chang Shi Department of Physics & Astronomy Mc block copolymer self-assembly to produce and control nanostructures ·Phases and phase transitions, electric fields, confinements Self-Assembly of Block Copolymers #12;Confined Self-Assembly of Block

Maryland at College Park, University of

88

Optimal Self-Assembly of Counters at Temperature Two  

E-Print Network (OSTI)

Optimal Self-Assembly of Counters at Temperature Two Qi Cheng University of Oklahoma Ashish Goel time of irreversible self-assemblies. 1 Introduction Self-assembly is the ubiquitous process by which been suggested that self-assembly will ultimately become an important technology, enabling

Goel, Ashish

89

Self-Assembly of the Ionic Peptide EAK16: The Effect of Charge Distributions on Self-Assembly  

E-Print Network (OSTI)

Self-Assembly of the Ionic Peptide EAK16: The Effect of Charge Distributions on Self-Assembly S understanding of self-assembly phenomena of naturally occurring peptides/proteins. Here, we study the influence of molecular architecture and interactions on the self-assembly of model peptides (EAK16s), using both

Bechhoefer, John

90

Nanomaterial processing using self-assembly-bottom-up chemical and biological approaches  

Science Journals Connector (OSTI)

Nanotechnology is touted as the next logical sequence in technological evolution. This has led to a substantial surge in research activities pertaining to the development and fundamental understanding of processes and assembly at the nanoscale. Both top-down and bottom-up fabrication approaches may be used to realize a range of well-defined nanostructured materials with desirable physical and chemical attributes. Among these, the bottom-up self-assembly process offers the most realistic solution toward the fabrication of next-generation functional materials and devices. Here, we present a comprehensive review on the physical basis behind self-assembly and the processes reported in recent years to direct the assembly of nanoscale functional blocks into hierarchically ordered structures. This paper emphasizes assembly in the synthetic domain as well in the biological domain, underscoring the importance of biomimetic approaches toward novel materials. In particular, two important classes of directed self-assembly, namely, (i) self-assembly among nanoparticle–polymer systems and (ii) external field-guided assembly are highlighted. The spontaneous self-assembling behavior observed in nature that leads to complex, multifunctional, hierarchical structures within biological systems is also discussed in this review. Recent research undertaken to synthesize hierarchically assembled functional materials have underscored the need as well as the benefits harvested in synergistically combining top-down fabrication methods with bottom-up self-assembly.

Rajagopalan Thiruvengadathan; Venumadhav Korampally; Arkasubhra Ghosh; Nripen Chanda; Keshab Gangopadhyay; Shubhra Gangopadhyay

2013-01-01T23:59:59.000Z

91

Geek-Up[1.21.2011]: Bio-Prospecting and Self-Assembling Nano Ropes |  

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

.21.2011]: Bio-Prospecting and Self-Assembling Nano Ropes .21.2011]: Bio-Prospecting and Self-Assembling Nano Ropes Geek-Up[1.21.2011]: Bio-Prospecting and Self-Assembling Nano Ropes January 21, 2011 - 5:41pm Addthis Niketa Kumar Niketa Kumar Public Affairs Specialist, Office of Public Affairs What are the key facts? Microalgae are ;ole biological solar cells -- they capture solar energy and fix inorganic carbon into energy-rich lipids which can be converted into biofuels. The best way to make these biofuels commercially viable is to maximize lipid production, which tends to occur when algaes are under stress. Researchers are searching for the 5 most best-performing algae. Researchers have developed self-assembling nanoscale ropes designed to mimic the intricacy and functionality of biological materials. In the past year, Lee Elliott logged 3,500 miles traveling the West,

92

Fabrication of Graphene Embedded LiFePO4 Using a Catalyst Assisted Self Assembly Method as a Cathode Material for High Power Lithium-Ion Batteries  

Science Journals Connector (OSTI)

Tailoring Crystal Structure and Morphology of LiFePO4/C Cathode Materials Synthesized by Heterogeneous Growth on Nanostructured LiFePO4 Seed Crystals ... Enhancement of Electrochemical Activity of LiFePO4 (olivine) by Amphiphilic Ru-bipyridine Complex Anchored to a Carbon Nanotube ... properties have also been investigated after assembling coin cells with the CA-graphene/LiFePO4 composite as a cathode active material. ...

WonKeun Kim; WonHee Ryu; DongWook Han; SungJin Lim; JiYong Eom; HyukSang Kwon

2014-03-12T23:59:59.000Z

93

Method of Synthesis of Proton Conducting Materials  

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

Method of Synthesis of Proton Conducting Materials Method of Synthesis of Proton Conducting Materials A method of producing a proton conducting material. Available for thumbnail of...

94

Computing by molecular self-assembly  

Science Journals Connector (OSTI)

...algorithmic, programmable self-assembled structures. Synthetic DNA molecules have been designed and shown to assemble into...nl049527q ) 32 Shin, J.-S. , Pierce, N. A. 2004 A synthetic DNA walker for molecular transport. J. Am. Chem. Soc...

2012-01-01T23:59:59.000Z

95

Vesicular Self-Assembly of Colloidal Amphiphiles in Microfluidics  

Science Journals Connector (OSTI)

Vesicular Self-Assembly of Colloidal Amphiphiles in Microfluidics ... microfluidics; hydrodynamic flow; colloidal amphiphiles; amphiphilic nanoparticles; self-assembly; vesicles ... Microfluidics (MFs) has been applied for the continuous assembly of molecular amphiphiles. ...

Jie He; Lei Wang; Zengjiang Wei; Yunlong Yang; Chaoyang Wang; Xiaojun Han; Zhihong Nie

2013-09-09T23:59:59.000Z

96

Self-Assembly and Properties of Functionalized Molecular  

E-Print Network (OSTI)

Self-Assembly and Properties of Functionalized Molecular Prakash P. Neelakandan University architectures were synthesized and their photophysical and self-assembly properties studied. Preliminary results architectures were synthesized and their photophysical and self studied. Preliminary results indicate

Shyamasundar, R.K.

97

Toward a molecular programming language for algorithmic self-assembly.  

E-Print Network (OSTI)

?? Self-assembly is the process whereby relatively simple components autonomously combine to form more complex objects. Nature exhibits self-assembly to form everything from microscopic crystals… (more)

Patitz, Matthew John

2010-01-01T23:59:59.000Z

98

Toward a molecular programming language for algorithmic self-assembly.  

E-Print Network (OSTI)

??Self-assembly is the process whereby relatively simple components autonomously combine to form more complex objects. Nature exhibits self-assembly to form everything from microscopic crystals to… (more)

Patitz, Matthew John

2010-01-01T23:59:59.000Z

99

A New Route to Nano Self-Assembly  

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

A New Route to Nano Self-Assembly A New Route to Nano Self-Assembly Print Wednesday, 24 February 2010 00:00 If the promise of nanotechnology is to be fulfilled, nanoparticles will...

100

Self-assembled lipid and membrane protein polyhedral nanoparticles  

E-Print Network (OSTI)

Self-assembled lipid and membrane protein polyhedral nanoparticles Tamara Bastaa,1 , Hsin-Jui Wub,1 for review January 28, 2012) We demonstrate that membrane proteins and phospholipids can self-assemble for the self-assembly of lipids and membrane proteins into closed polyhedral structures that can potentially

Stowell, Michael

Note: This page contains sample records for the topic "materials synthesis self-assembly" 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

Automated Self-Assembly Programming Paradigm: A Particle Swarm Realization  

E-Print Network (OSTI)

Automated Self-Assembly Programming Paradigm: A Particle Swarm Realization Lin Li, Natalio Automated Self-Assembly Programming Para- digm (ASAP2 ). We investigated how external environment settings affect population diversity and software self-assembly efficiency. In this paper, we introduce

Aickelin, Uwe

102

Self-Organization and the Self-Assembling Process in  

E-Print Network (OSTI)

Self-Organization and the Self-Assembling Process in Tissue Engineering Kyriacos A. Athanasiou. Keywords tissue engineering, regenerative medicine, scaffoldless, self-organization, self-assembling to include a new and growing subfield of scaffoldless techniques that generate self-organizing and self-assembling

Athanasiou, Kyriacos

103

Reducing Facet Nucleation during Algorithmic Self-Assembly  

E-Print Network (OSTI)

Reducing Facet Nucleation during Algorithmic Self-Assembly Ho-Lin Chen,, Rebecca Schulman,,§ Ashish; Revised Manuscript Received July 3, 2007 ABSTRACT Algorithmic self-assembly, a generalization of crystal. Molecular self-assembly is an emerging technology that will ultimately enable the fabrication of great

Goel, Ashish

104

Molecule-Mimetic Chemistry and Mesoscale Self-Assembly  

E-Print Network (OSTI)

Molecule-Mimetic Chemistry and Mesoscale Self-Assembly NED B. BOWDEN, MARCUS WECK, INSUNG S. CHOI systems. We suggest that it will be possible to develop complex structures composed of "objects" that self-assemble, shape recognition, and size exclusion can be used to guide the self-assembly of these objects

Prentiss, Mara

105

Self-Assembly-Driven Nematization Khanh Thuy Nguyen,  

E-Print Network (OSTI)

Self-Assembly-Driven Nematization Khanh Thuy Nguyen, Francesco Sciortino,, and Cristiano De Michele: The anisotropy of attractive interactions between particles can favor, through a self-assembly process benchmark for recent theoretical approaches and to assess their ability to capture the coupling between self-assembly

Sciortino, Francesco

106

Robust Self-assembly of Graphs Stanislav Angelov1  

E-Print Network (OSTI)

Robust Self-assembly of Graphs Stanislav Angelov1 , Sanjeev Khanna2 , and Mirk´o Visontai3 1 Google, University of Pennsylvania Philadelphia, PA 19104, USA mirko@math.upenn.edu Abstract. Self-assembly studied model of self-assembly is the Accretive Graph Assembly Model whereby an edge-weighted graph

Pennsylvania, University of

107

Self-Assembly of Dendron Rodcoil Molecules into Nanoribbons  

E-Print Network (OSTI)

Self-Assembly of Dendron Rodcoil Molecules into Nanoribbons Eugene R. Zubarev, Martin U. Pralle on designed molecules that self-order or fold. The focus on self-assembly throughout the 90s has generated to control the dimensionality and shape of self- assembled structures through molecular design remains a chal

Zubarev, Eugene

108

Self-assembling DNA templates for programmed artificial biomineralization  

E-Print Network (OSTI)

Self-assembling DNA templates for programmed artificial biomineralization Enrique C. Samano created via engineered DNA self-assembly represent an important new class of soft matter. These assemblies nanostructures Our current ability to create complex DNA nanostructures via designed self- assembly owes much

Finkelstein, Gleb

109

Biomimetic self-assembly of a functional asymmetrical electronic device  

E-Print Network (OSTI)

Biomimetic self-assembly of a functional asymmetrical electronic device Mila Boncheva, David H--patterned with logic devices, wires, and solder dots--were connected in a linear string by using flexible wire. On self-assembly­3). Biological structures arise by con- strained self-assembly, and are usually three-dimensional (3D) (4). We

Prentiss, Mara

110

Electrostatically Self-assembled Amphiplexes  

SciTech Connect

This research will focus on characterizing the phase behavior of polyelectrolyte-surfactant microemulsions (PSM) that were recently discovered in our lab and indentifing possible uses of their long-range ordered nanostructures towards bioseparation, oil-recovery and drug delivery systems. In addition, we are proposing strategies for synthesizing solid and long-range ordered materials with unit cells on the nanometer scale using polymerization and/or cross-linking to solidify the soft template.

Helmut H. Strey

2011-02-15T23:59:59.000Z

111

Materials Synthesis from Atoms to Systems | ORNL  

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

Porous Materials Thin Film Deposition Single Crystal Growth Texture Control Additive Manufacturing Nanomaterials Synthesis Designer Organic Molecules Related Research Materials...

112

Argonne CNM News: Chiral Pinwheels Self-Assembled from C60 and Pentacene  

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

Chiral "Pinwheels" Self-Assembled from C60 and Pentacene Chiral "Pinwheels" Self-Assembled from C60 and Pentacene Chiral Pinwheels UHV STM image of C60-Pn in-plane chiral heterojunctions, overlaid with molecular models showing the orientation and the chirality (right-handed green, left-handed blue). Chiral Pinwheels Map Calculated map of the electron density changes due to the heterojunction showing electron transfer to the C60 in the center. In a recent study from the Electronic & Magnetic Materials & Devices and Theory & Modeling groups, C60 and pentacene (Pn) molecules, two workhorses of organic electronics and opto-electronics, are observed to self-assemble on a Cu(111) surface into in-plane "pinwheel"-shaped and chiral heterojunctions. Calculations confirm that the heterostructures are

113

Self-Assembly and Crystallization of Hairy (f-Star) and DNA-Grafted Nanocubes  

SciTech Connect

Nanoparticle superlattices are key to realizing many of the materials that will solve current technological challenges. Particularly important for their optical, mechanical or catalytic properties are superlattices of anisotropic (nonspherical) nanoparticles. The key challenge is how to program anisotropic nanoparticles to self-assemble into the relevant structures. In this Article, using numerical simulations, we show that “hairy” (f-star) or DNA grafted on nanocubes provides a general framework to direct the self-assembly into phases with crystalline, liquid crystalline, rotator, or noncrystalline phases with both long-range positional and orientational order. We discuss the relevance of these phases for engineering nanomaterials or micromaterials displaying precise orientational order, realization of dry superlattices as well as for the field of programmed self-assembly of anisotropic nanoparticles in general.

Knorowski, Christopher [Ames Laboratory; Travesset, Alex [Ames Laboratory

2013-12-10T23:59:59.000Z

114

Covalent Immobilization of Peptides on Self-Assembled Monolayer...  

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

cell adhesion. Self-assembled monolayer surfaces (SAMs) provide a simple and convenient platform for tailoring chemical properties of a variety of substrates. Existing techniques...

115

Shattering of Peptide Ions on Self-Assembled Monolayer Surfaces...  

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

fluorinated self-assembled monolayer (SAM) surface was studied using a novel Fourier transform ion cyclotron resonance mass spectrometer (FT-ICR MS) specially equipped to perform...

116

Analysis of capillary forces in electrowetting and precision self assembly.  

E-Print Network (OSTI)

??Developments in micro and nano technology have great potential in many applications. Two applications that will be addressed in this work are self assembly of… (more)

Ramadoss, Vivek

2008-01-01T23:59:59.000Z

117

Microfluidic self-assembly of quantum dot compound micelles.  

E-Print Network (OSTI)

??This thesis is devoted to the development of microfluidic processes for the controlled self-assembly of quantum dot compound micelles (QDCMs). Microfluidic processes are developed to… (more)

Schabas, Greg

2007-01-01T23:59:59.000Z

118

A solution NMR investigation into the impaired self-assembly...  

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

solution NMR investigation into the impaired self-assembly properties of two murine amelogenins containing the point mutations A solution NMR investigation into the impaired...

119

Electric field directed self assembly of nanoparticle structures  

E-Print Network (OSTI)

Self Assembly of Nanoparticle Structures by DietrichBiologically programmed nanoparticle assembly. AdvancedPeriodic square-like gold nanoparticle arrays templated by

Dehlinger, Dietrich Alexander

2008-01-01T23:59:59.000Z

120

BNL | CFN Strategic Plan | Self-Assembled Nanomaterials by Design  

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

symmetry. Dynamically tunable and reconfigurable self-assembled systems, mimicking protein folding. Controlling and switching the linkages between specific particles on a DNA...

Note: This page contains sample records for the topic "materials synthesis self-assembly" 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

DNA Origami Directed Self-Assembly of Discrete Silver Nanoparticle...  

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

Self-Assembly of Discrete Silver Nanoparticle Architectures Source: Angewandte Chemie International Edition Year: 2010 Volume: 49 Pages: 2700-2704 ABSTRACT: DNA origami...

122

Bundling and Interdigitation of Adsorbed Thiolate Groups in Self-Assembled Nanocrystal Superlattices  

E-Print Network (OSTI)

Bundling and Interdigitation of Adsorbed Thiolate Groups in Self-Assembled Nanocrystal into a crystalline material. The adsorbed molecules not only serve as the protection layer for the nanocrystals. The length of the adsorbed molecules is a controllable parameter, making the ratio of particle size

Wang, Zhong L.

123

Residual stress and self-assembly during deposition and etching of MEMS  

E-Print Network (OSTI)

with no residual stresses. Residual stresses are investigated as a means of self-assembling MEMS and NEMS during material deposition and etching. The assembly of two components is considered: one component is subjected to deposition or etching and is modeled...

Mani, Sathyanarayanan

2012-06-07T23:59:59.000Z

124

Programmable Self-Assembly Control of Concurrent Systems From the Bottom Up  

E-Print Network (OSTI)

Programmable Self-Assembly Control of Concurrent Systems From the Bottom Up Eric Klavins Self-assembly. Self-assembly is ubiquitous in nature. For example, virus capsids, cell membranes, and tissues are all self-assembled from smaller com- ponents in a completely distributed fashion. Self-assembly

125

A Ferrocene-Based Catecholamide Ligand: the Consequences of Ligand Swivel for Directed Supramolecular Self-Assembly  

E-Print Network (OSTI)

Directed Supramolecular Self-Assembly Jeffrey S. Mugridge,rational design and directed self-assembly of supramolecularcomplexes. Keywords: Self-assembly; Supramolecular;

Mugridge, Jeffrey

2011-01-01T23:59:59.000Z

126

Steering the Self-Assembly of Octadecylamine Monolayers on Mica by Controlled Mechanical Energy Transfer from the AFM Tip  

E-Print Network (OSTI)

Steering the self-assembly of octadecylamine monolayers onon the dynamics of self-assembly of monolayer films ofoctadecylamine monolayers, self-assembly, AFM, packing

Benitez, J.J.

2010-01-01T23:59:59.000Z

127

Self-assembling multimeric nucleic acid constructs  

DOE Patents (OSTI)

The invention is directed to constructs and compositions containing multimeric forms of nucleic acid. Multimeric nucleic acids comprise single-stranded nucleic acids attached via biotin to streptavidin and bound with a functional group. These constructs can be utilized in vivo to treat or identify diseased tissue or cells. Repeated administrations of multimeric nucleic acid compositions produce a rapid and specific amplification of nucleic acid constructs and their attached functional groups. For treatment purposes, functional groups may be toxins, radioisotopes, genes or enzymes. Diagnostically, labeled multimeric constructs may be used to identify specific targets in vivo or in vitro. Multimeric nucleic acids may also be used in nanotechnology and to create self-assembling polymeric aggregates such as membranes of defined porosity, microcircuits and many other products.

Cantor, Charles R. (Boston, MA); Niemeyer, Christof M. (Bremen, DE); Smith, Cassandra L. (Boston, MA); Sano, Takeshi (Boston, MA); Hnatowich, Donald J. (Brookline, MA); Rusckowski, Mary (Southborough, MA)

1996-01-01T23:59:59.000Z

128

Self-assembling multimeric nucleic acid constructs  

DOE Patents (OSTI)

The invention is directed to constructs and compositions containing multimeric forms of nucleic acid. Multimeric nucleic acids comprise single-stranded nucleic acids attached via biotin to streptavidin and bound with a functional group. These constructs can be utilized in vivo to treat or identify diseased tissue or cells. Repeated administrations of multimeric nucleic acid compositions produce a rapid and specific amplification of nucleic acid constructs and their attached functional groups. For treatment purposes, functional groups may be toxins, radioisotopes, genes or enzymes. Diagnostically, labeled multimeric constructs may be used to identify specific targets in vivo or in vitro. Multimeric nucleic acids may also be used in nanotechnology and to create self-assembling polymeric aggregates such as membranes of defined porosity, microcircuits and many other products.

Cantor, Charles R. (Boston, MA); Niemeyer, Christof M. (Bremen, DE); Smith, Cassandra L. (Boston, MA); Sano, Takeshi (Boston, MA); Hnatowich, Donald J. (Brookline, MA); Rusckowski, Mary (Southborough, MA)

1999-10-12T23:59:59.000Z

129

Exploring Self-Assembly and Photomechanical Switching Properties of Molecules at Surfaces  

E-Print Network (OSTI)

11.4 Self-Assembly Properties . . . . . . . . . . . . . 11.512.2 Self-Assembly of TTB-AB on GaAs(110) . . . . . . . 12.3at Surfaces 4 Self-Assembly Properties of Azobenzene on Au(

Cho, Jongweon

2010-01-01T23:59:59.000Z

130

Self-Assembly and Mass Transport in Membranes for Artificial Photosynthesis  

E-Print Network (OSTI)

45 CHAPTER 3. SELF-ASSEMBLY AND TRANSPORT LIMITATIONS IN7371. CHAPTER 3. SELF-ASSEMBLY AND TRANSPORT LIMITATIONS IN2. CONTROLLING NANOROD SELF-ASSEMBLY IN POLYMER THIN-FILMS

Modestino, Miguel Antonio

2013-01-01T23:59:59.000Z

131

In vitro studies of single-stranded RNA virus self-assembly  

E-Print Network (OSTI)

M. and Gelbart. 2012. Self-assembly of viral capsid proteinBancroft, J. B. 1970. The self-assembly of spherical plantR. 1967. A study of the self-assembly process in a small

Comas Garcia, Mauricio

2013-01-01T23:59:59.000Z

132

"Self-assembly of uniform polyhedral silver nanocrystals into densest packings and exotic superlattices"  

E-Print Network (OSTI)

E. Drying-mediated self- assembly of nanoparticles. Natureforces and their uses in self-assembly. Small 5, 1600–30 (Figure legends Figure 1. Self-assembly of dense polyhedra

,

2013-01-01T23:59:59.000Z

133

Enzymatic Ligation Creates Discrete Multi-Nanoparticle Building Blocks for Self-Assembly  

E-Print Network (OSTI)

Building Blocks for Self-Assembly Shelley A. Claridge,blocks for nanoscale self-assembly; second to develop aLCR, BIOCONJUGATE, SELF-ASSEMBLY, SAXS. MANUSCRIPT TEXT

Claridge, Shelley A.

2008-01-01T23:59:59.000Z

134

High efficiency photodetectors fabricated by electrostatic layer-by-layer self-assembly of CdTe quantum dots  

E-Print Network (OSTI)

High efficiency photodetectors fabricated by electrostatic layer-by-layer self-assembly of CdTe 20 October 2008 We demonstrate high-performance photodetectors from multilayers of CdTe quantum dots. The synthesis of CdTe QDs in aqueous solution using cadmium perchlorate hydrate and Al2Te3 was previously re

Lin, Lih Y.

135

Combinatorial synthesis of novel materials  

DOE Patents (OSTI)

Methods and apparatus for the preparation and use of a substrate having an array of diverse materials in predefined regions thereon. A substrate having an array of diverse materials thereon is generally prepared by delivering components of materials to predefined regions on a substrate, and simultaneously reacting the components to form at least two materials. Materials which can be prepared using the methods and apparatus of the present invention include, for example, covalent network solids, ionic solids and molecular solids. More particularly, materials which can be prepared using the methods and apparatus of the present invention include, for example, inorganic materials, intermetallic materials, metal alloys, ceramic materials, organic materials, organometallic materials, non-biological organic polymers, composite materials (e.g., inorganic composites, organic composites, or combinations thereof), etc. Once prepared, these materials can be screened for useful properties including, for example, electrical, thermal, mechanical, morphological, optical, magnetic, chemical, or other properties. Thus, the present invention provides methods for the parallel synthesis and analysis of novel materials having useful properties.

Schultz, Peter G. (Oakland, CA); Xiang, Xiaodong (Alameda, CA); Goldwasser, Isy (Menlo Park, CA)

2001-01-01T23:59:59.000Z

136

Combinatorial synthesis of novel materials  

DOE Patents (OSTI)

Methods and apparatus for the preparation and use of a substrate having an array of diverse materials in predefined regions thereon. A substrate having an array of diverse materials thereon is generally prepared by delivering components of materials to predefined regions on a substrate, and simultaneously reacting the components to form at least two materials. Materials which can be prepared using the methods and apparatus of the present invention include, for example, covalent network solids, ionic solids and molecular solids. More particularly, materials which can be prepared using the methods and apparatus of the present invention include, for example, inorganic materials, intermetallic materials, metal alloys, ceramic materials, organic materials, organometallic materials, non-biological organic polymers, composite materials (e.g., inorganic composites, organic composites, or combinations thereof), etc. Once prepared, these materials can be screened for useful properties including, for example, electrical, thermal, mechanical, morphological, optical, magnetic, chemical, or other properties. Thus, the present invention provides methods for the parallel synthesis and analysis of novel materials having useful properties.

Schultz, Peter G. (Oakland, CA); Xiang, Xiaodong (Alameda, CA); Goldwasser, Isy (Alameda, CA)

2002-02-12T23:59:59.000Z

137

Combinatorial synthesis of novel materials  

DOE Patents (OSTI)

Methods and apparatus for the preparation and use of a substrate having an array of diverse materials in predefined regions thereon. A substrate having an array of diverse materials thereon is generally prepared by delivering components of materials to predefined regions on a substrate, and simultaneously reacting the components to form at least two materials. Materials which can be prepared using the methods and apparatus of the present invention include, for example, covalent network solids, ionic solids and molecular solids. More particularly, materials which can be prepared using the methods and apparatus of the present invention include, for example, inorganic materials, intermetallic materials, metal alloys, ceramic materials, organic materials, organometallic materials, non-biological organic polymers, composite materials (e.g., inorganic composites, organic composites, or combinations thereof), etc. Once prepared, these materials can be screened for useful properties including, for example, electrical, thermal, mechanical, morphological, optical, magnetic, chemical, or other properties. Thus, the present invention provides methods for the parallel synthesis and analysis of novel materials having useful properties.

Schultz, Peter G. (Oakland, CA); Xiang, Xiaodong (Alameda, CA); Goldwasser, Isy (Menlo Park, CA)

1999-12-21T23:59:59.000Z

138

Self-Assembly of Nanocomponents into Composite Structures: Derivation and Simulation of Langevin Equations  

E-Print Network (OSTI)

The kinetics of the self-assembly of nanocomponents into a virus, nanocapsule, or other composite structure is analyzed via a multiscale approach. The objective is to achieve predictability and to preserve key atomic-scale features that underlie the formation and stability of the composite structures. We start with an all-atom description, the Liouville equation, and the order parameters characterizing nanoscale features of the system. An equation of Smoluchowski type for the stochastic dynamics of the order parameters is derived from the Liouville equation via a multiscale perturbation technique. The self-assembly of composite structures from nanocomponents with internal atomic structure is analyzed and growth rates are derived. Applications include the assembly of a viral capsid from capsomers, a ribosome from its major subunits, and composite materials from fibers and nanoparticles. Our approach overcomes errors in other coarse-graining methods which neglect the influence of the nanoscale configuration on the atomistic fluctuations. We account for the effect of order parameters on the statistics of the atomistic fluctuations which contribute to the entropic and average forces driving order parameter evolution. This approach enables an efficient algorithm for computer simulation of self-assembly, whereas other methods severely limit the timestep due to the separation of diffusional and complexing characteristic times. Given that our approach does not require recalibration with each new application, it provides a way to estimate assembly rates and thereby facilitate the discovery of self-assembly pathways and kinetic dead-end structures.

Stephen Pankavich; Zeina Shreif; Yinglong Miao; Peter Ortoleva

2010-03-08T23:59:59.000Z

139

Materials Discovery Design, Synthesis & Processing | The Ames...  

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

Materials Discovery Design, Synthesis & Processing Vision: AMES will be the premier U.S. laboratory lusing an "atoms to applications" approach to discover and design new materials....

140

Synthesis of refractory materials  

DOE Patents (OSTI)

Refractory metal nitrides are synthesized during a self-propagating combustion process utilizing a solid source of nitrogren. For this purpose, a metal azide is employed, preferably NaN.sub.3. The azide is combusted with Mg or Ca, and a metal oxide is selected from Groups III-A, IV-A, III-B, IV-B, or a rare earth metal oxide. The mixture of azide, Ca or Mg and metal oxide is heated to the mixture's ignition temperature. At that temperature the mixture is ignited and undergoes self-sustaining combustion until the starter materials are exhausted, producing the metal nitride.

Holt, Joseph B. (San Jose, CA)

1984-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "materials synthesis self-assembly" 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

Synthesis of refractory materials  

DOE Patents (OSTI)

Refractory metal nitrides are synthesized during a self-propagating combustion process utilizing a solid source of nitrogen. For this purpose, a metal azide is employed, preferably NaN/sub 3/. The azide is combusted with Mg or Ca, and a metal oxide is selected from Groups III-A, IV-A, III-B, IV-B, or a rare earth metal oxide. The mixture of azide, Ca or Mg and metal oxide is heated to the mixture's ignition temperature. At that temperature the mixture is ignited and undergoes self-sustaining combustion until the starter materials are exhausted, producing the metal nitride.

Holt, J.B.

1983-08-16T23:59:59.000Z

142

Self-assembly of hydrolysed ?-lactalbumin into nanotubes.  

E-Print Network (OSTI)

??Self-assembly of proteins, peptides and DNA is a powerful approach for fabricating novel supramolecular architectures. Via this "bottom-up" approach many new nanomaterials have been and… (more)

Graveland-Bikker, Johanna Frederike

2005-01-01T23:59:59.000Z

143

Mechanical behavior and microstructure of self-assembling oligopeptide gels  

E-Print Network (OSTI)

Hydrogels have become widely used in the fields of tissue engineering and drug delivery. One class of hydrogel is formed from synthetic oligopeptides that self-assemble into a solution of beta-sheet filaments. These filaments ...

Hammond, Nathan Allen

2010-01-01T23:59:59.000Z

144

Electric field directed self assembly of nanoparticle structures  

E-Print Network (OSTI)

and Heller, M.J. (2007) Electric-field-directed assembly ofOF THE DISSERTATION Electric Field Directed Self Assembly ofof colloidal particles by electric fields. Soft Matter, 2,

Dehlinger, Dietrich Alexander

2008-01-01T23:59:59.000Z

145

Self-assembly and hydrogelation of Fmoc-phenylalanine derivatives.  

E-Print Network (OSTI)

??The ability of peptides and small molecules to spontaneously self-assemble into amyloid-like fibrils has been exploited in the development of noncovalent hydrogels. Noncovalent hydrogels have… (more)

Ryan, Derek M. (1985 - )

2012-01-01T23:59:59.000Z

146

SELF-ASSEMBLY AND CONTROLLED ASSEMBLY OF NANOPARTICLES.  

E-Print Network (OSTI)

??This thesis describes an exploration of interactions between metal nanoparticles and new techniques for their assembly. In Chapter 2, the self-assembly of 300-nm diameter Au,… (more)

Dillenback, Lisa

2008-01-01T23:59:59.000Z

147

A New Route to Nano Self-Assembly  

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

A New Route to Nano Self-Assembly Print If the promise of nanotechnology is to be fulfilled, nanoparticles will have to be able to make something of themselves. An important...

148

Self-assembly of amphiphilic peanut-shaped nanoparticles  

E-Print Network (OSTI)

We use computer simulation to investigate the self-assembly of Janus-like amphiphilic peanut-shaped nanoparticles, finding phases of clusters, bilayers and micelles in accord with ideas of packing familiar from the study of molecular surfactants. However, packing arguments do not explain the hierarchical self-assembly dynamics that we observe, nor the coexistence of bilayers and faceted polyhedra. This coexistence suggests that experimental realizations of our model can achieve multipotent assembly of either of two competing ordered structures.

Stephen Whitelam; Stefan A. F. Bon

2010-02-19T23:59:59.000Z

149

Advances in cryogenic transmission electron microscopy for the characterization of dynamic self-assembling nanostructures  

Science Journals Connector (OSTI)

Elucidating the structural information of nanoscale materials in their solvent-exposed state is crucial, as a result, cryogenic transmission electron microscopy (cryo-TEM) has become an increasingly popular technique in the materials science, chemistry, and biology communities. Cryo-TEM provides a method to directly visualize the specimen structure in a solution-state through a thin film of vitrified solvent. This technique complements X-ray, neutron, and light scattering methods that probe the statistical average of all species present; furthermore, cryo-TEM can be used to observe changes in structure over time. In the area of self-assembly, this tool has been particularly powerful for the characterization of natural and synthetic small molecule assemblies, as well as hybrid organic–inorganic composites. In this review, we discuss recent advances in cryogenic TEM in the context of self-assembling systems with emphasis on characterization of transitions observed in response to external stimuli.

Christina J. Newcomb; Tyson J. Moyer; Sungsoo S. Lee; Samuel I. Stupp

2012-01-01T23:59:59.000Z

150

Self-Assembly of Arbitrary Shapes Using RNAse Enzymes: Meeting the Kolmogorov Bound with  

E-Print Network (OSTI)

Self-Assembly of Arbitrary Shapes Using RNAse Enzymes: Meeting the Kolmogorov Bound with Small@uwplatt.edu Abstract We consider a model of algorithmic self-assembly of geometric shapes out of square Wang tiles Biomolecular computation, RNAse enzyme self-assembly, algorithmic self-assembly, Komogorov complexity Digital

Paris-Sud XI, Université de

151

Self-Assembly Using Hydrogen Bonds to Direct the Assembly of  

E-Print Network (OSTI)

Self-Assembly Using Hydrogen Bonds to Direct the Assembly of Crowded Aromatics Mark L. Bushey, Thuc · molecular recognition · nanotechnology · self-assembly 1. Introduction Self-assembly is a powerful tool such self-assembled system.[2] This relatively new class of liquid crystalline compounds, discovered in 1977

Hone, James

152

Automated Self-Assembly Programming Paradigm: The Impact of Network Topology  

E-Print Network (OSTI)

Automated Self-Assembly Programming Paradigm: The Impact of Network Topology Lin Li, Jonathan M automated self-assembly programming paradigm (ASAP2 ) using unguided self- assembly and swarm-inspired methodologies. We investigated how external environment settings affect software self-assembly speed

Aickelin, Uwe

153

Self-Assembly of Arbitrary Shapes Using RNAse Enzymes: Meeting the Kolmogorov Bound with  

E-Print Network (OSTI)

Self-Assembly of Arbitrary Shapes Using RNAse Enzymes: Meeting the Kolmogorov Bound with Small@uwplatt.edu This research was supported in part by NSF grant CDI-0941538 Abstract We consider a model of algorithmic self-assembly Biomolecular computation, RNAse enzyme self-assembly, algorithmic self-assembly, Komogorov complexity Digital

Demaine, Erik

154

Self-Assembly of 10-m-Sized Objects into Ordered Three-Dimensional Arrays  

E-Print Network (OSTI)

Self-Assembly of 10-µm-Sized Objects into Ordered Three-Dimensional Arrays Thomas D. Clark, JoeVed March 9, 2001 Abstract: This paper describes the self-assembly of small objectsspolyhedral metal plates functionalized to be hydrophobic or hydrophilic using self-assembled monolayers (SAMs). Self-assembly occurs

Tien, Joe

155

Using Self-Assembled Block Copolymer Macrostructures for Creating a Model System for Cell Mimicry  

E-Print Network (OSTI)

of self-assembled materials spans many different fields of scientific research, but our primary motivation for their use in this research is biomimicry. The constituent blocks of amphiphilic block copolymers can be made from either amino acids... bilayer membrane that encloses a spherical volume, an easily modifiable surface and controlled surface density, characteristic mechanical properties, and a responsive nature to surrounding 3 conditions. Ideally, these specific traits are may...

Gaspard, Jeffery Simon

2011-02-22T23:59:59.000Z

156

Producibility in hierarchical self-assembly Three results are shown on producibility in the hierarchical model of tile self-assembly.  

E-Print Network (OSTI)

Producibility in hierarchical self-assembly David Doty Abstract Three results are shown on producibility in the hierarchical model of tile self-assembly. It is shown that a simple greedy polynomial, an assembly is considered terminal if nothing can attach to it; viewing self-assembly as a computation

Doty, David

157

Self-Assembled Monolayer And Method Of Making  

DOE Patents (OSTI)

According to the present invention, the previously known functional material having a self-assembled monolayer on a substrate has a plurality of assembly molecules each with an assembly atom with a plurality of bonding sites (four sites when silicon is the assembly molecule) wherein a bonding fraction (or fraction) of fully bonded assembly atoms (the plurality of bonding sites bonded to an oxygen atom) has a maximum when made by liquid solution deposition, for example a maximum of 40% when silicon is the assembly molecule, and maximum surface density of assembly molecules was 5 silanes per square nanometer. Note that bonding fraction and surface population are independent parameters. The method of the present invention is an improvement to the known method for making a siloxane layer on a substrate, wherein instead of a liquid phase solution chemistry, the improvement is a supercritical phase chemistry. The present invention has the advantages of greater fraction of oxygen bonds, greater surface density of assembly molecules and reduced time for reaction of about 5 minutes to about 24 hours.

Fryxell, Glen E. (Kennewick, WA); Zemanian, Thomas S. (Richland, WA); Liu, Jun (West Richland, WA); Shin, Yongsoon (Richland, WA)

2005-01-25T23:59:59.000Z

158

Self-Assembled Monolayer And Method Of Making  

DOE Patents (OSTI)

According to the present invention, the previously known functional material having a self-assembled monolayer on a substrate has a plurality of assembly molecules each with an assembly atom with a plurality of bonding sites (four sites when silicon is the assembly molecule) wherein a bonding fraction (or fraction) of fully bonded assembly atoms (the plurality of bonding sites bonded to an oxygen atom) has a maximum when made by liquid solution deposition, for example a maximum of 40% when silicon is the assembly molecule, and maximum surface density of assembly molecules was 5 silanes per square nanometer. Note that bonding fraction and surface population are independent parameters. The method of the present invention is an improvement to the known method for making a siloxane layer on a substrate, wherein instead of a liquid phase solution chemistry, the improvement is a supercritical phase chemistry. The present invention has the advantages of greater fraction of oxygen bonds, greater surface density of assembly molecules and reduced time for reaction of about 5 minutes to about 24 hours.

Fryxell, Glen E. (Kennewick, WA); Zemanian, Thomas S. (Richland, WA); Liu, Jun (West Richland, WA); Shin, Yongsoon (Richland, WA)

2004-06-22T23:59:59.000Z

159

Self-assembled monolayer and method of making  

DOE Patents (OSTI)

According to the present invention, the previously known functional material having a self-assembled monolayer on a substrate has a plurality of assembly molecules each with an assembly atom with a plurality of bonding sites (four sites when silicon is the assembly molecule) wherein a bonding fraction (or fraction) of fully bonded assembly atoms (the plurality of bonding sites bonded to an oxygen atom) has a maximum when made by liquid solution deposition, for example a maximum of 40% when silicon is the assembly molecule, and maximum surface density of assembly molecules was 5 silanes per square nanometer. Note that bonding fraction and surface population are independent parameters. The method of the present invention is an improvement to the known method for making a siloxane layer on a substrate, wherein instead of a liquid phase solution chemistry, the improvement is a supercritical phase chemistry. The present invention has the advantages of greater fraction of oxygen bonds, greater surface density of assembly molecules and reduced time for reaction of about 5 minutes to about 24 hours.

Fryxell, Glen E [Kennewick, WA; Zemanian, Thomas S [Richland, WA; Liu, Jun [West Richland, WA; Shin, Yongsoon [Richland, WA

2003-03-11T23:59:59.000Z

160

Self-Assembly and Transport Limitations in Confined Nafion Films  

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

Assembly and Transport Limitations in Confined Nafion Films Assembly and Transport Limitations in Confined Nafion Films Title Self-Assembly and Transport Limitations in Confined Nafion Films Publication Type Journal Article Year of Publication 2013 Authors Modestino, Miguel A., Devproshad K. Paul, Shudipto Dishari, Stephanie A. Petrina, Frances I. Allen, Michael A. Hickner, Kunal Karan, Rachel Segalman, and Adam Z. Weber Journal Macromolecules Volume 46 Issue 3 Pagination 867 - 873 Date Published 02/2013 ISSN 0024-9297 Abstract Ion-conducting polymers are important materials for a variety of electrochemical applications. Perfluorinated ionomers, such as Nafion, are the benchmark materials for proton conduction and are widely used in fuel cells and other electrochemical devices including solar-fuel generators, chlor-alkali cells, and redox flow batteries. While the behavior of Nafion in bulk membranes (10 to 100s ?m thick) has been studied extensively, understanding its properties under thin-film confinement is limited. Elucidating the behavior of thin Nafion films is particularly important for the optimization of fuel-cell catalyst layers or vapor-operated solar-fuel generators, where a thin film of ionomer is responsible for the transport of ions to and from the active electrocatalytic centers. Using a combination of transport-property measurements and structural characterization, this work demonstrates that confinement of Nafion in thin films induced thickness-dependent proton conductivity and ionic-domain structure. Confining Nafion films to thicknesses below 50 nm on a silicon substrate results in a loss of microphase separation of the hydrophilic and hydrophobic domains, which drastically increases the material?s water uptake while in turn decreasing its ionic conductivity.

Note: This page contains sample records for the topic "materials synthesis self-assembly" 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

Inverted List Kinetic Monte Carlo with Rejection ap-plied to Directed Self-Assembly of Epitaxial Growth  

E-Print Network (OSTI)

Inverted List Kinetic Monte Carlo with Rejection ap- plied to Directed Self-Assembly of Epitaxial of subsequently deposited material using a kinetic Monte Carlo algorithm that combines the use of inverted lists finding is that the relative performance of the inverted list algorithm improves with increasing system

Schulze, Tim

162

Self-Assembly of Arbitrary Shapes Using RNAse Enzymes: Meeting the Kolmogorov Bound with Small Scale Factor (extended abstract)  

E-Print Network (OSTI)

We consider a model of algorithmic self-assembly of geometric shapes out of square Wang tiles studied in SODA 2010, in which there are two types of tiles (e.g., constructed out of DNA and RNA material) and one operation ...

Demaine, Erik D.

163

A New Route to Nano Self-Assembly  

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

A New Route to Nano Self-Assembly Print A New Route to Nano Self-Assembly Print If the promise of nanotechnology is to be fulfilled, nanoparticles will have to be able to make something of themselves. An important advance toward this goal has been achieved by researchers who have found a simple and yet powerfully robust way to induce nanoparticles to assemble themselves into complex arrays. By adding specific types of small molecules to mixtures of nanoparticles and polymers, they were able to direct the self-assembly of the nanoparticles into arrays of one, two, and even three dimensions with no chemical modification of either the nanoparticles or the block copolymers. In addition, the application of external stimuli, such as light and/or heat, can be used to further direct the assemblies of nanoparticles for even finer and more complex structural details, a result verified by small-angle x-ray scattering (SAXS) at the ALS.

164

Guided Self-Assembly of Gold Thin Films  

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

Guided Self-Assembly of Gold Thin Films Print Guided Self-Assembly of Gold Thin Films Print Nanoparticles-man-made atoms with unique optical, electrical, and mechanical properties-have become key components in many fields of science. If nanoparticles could be coaxed into routinely assembling themselves into predictable complex structures and hierarchical patterns, devices could be mass-produced that are one thousand times smaller than today's microtechnologies. Berkeley Lab and UC Berkeley scientists have made progress toward this goal, successfully directing the self--assembly of nanoparticles into device-ready thin films, which have potential applications in fields ranging from computer memory storage to energy harvesting and storage, from catalysis to light management, and into the emerging new field of plasmonics.

165

A New Route to Nano Self-Assembly  

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

A New Route to Nano Self-Assembly Print A New Route to Nano Self-Assembly Print If the promise of nanotechnology is to be fulfilled, nanoparticles will have to be able to make something of themselves. An important advance toward this goal has been achieved by researchers who have found a simple and yet powerfully robust way to induce nanoparticles to assemble themselves into complex arrays. By adding specific types of small molecules to mixtures of nanoparticles and polymers, they were able to direct the self-assembly of the nanoparticles into arrays of one, two, and even three dimensions with no chemical modification of either the nanoparticles or the block copolymers. In addition, the application of external stimuli, such as light and/or heat, can be used to further direct the assemblies of nanoparticles for even finer and more complex structural details, a result verified by small-angle x-ray scattering (SAXS) at the ALS.

166

Guided Self-Assembly of Gold Thin Films  

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

Guided Self-Assembly of Gold Thin Films Print Guided Self-Assembly of Gold Thin Films Print Nanoparticles-man-made atoms with unique optical, electrical, and mechanical properties-have become key components in many fields of science. If nanoparticles could be coaxed into routinely assembling themselves into predictable complex structures and hierarchical patterns, devices could be mass-produced that are one thousand times smaller than today's microtechnologies. Berkeley Lab and UC Berkeley scientists have made progress toward this goal, successfully directing the self--assembly of nanoparticles into device-ready thin films, which have potential applications in fields ranging from computer memory storage to energy harvesting and storage, from catalysis to light management, and into the emerging new field of plasmonics.

167

A New Route to Nano Self-Assembly  

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

A New Route to Nano Self-Assembly Print A New Route to Nano Self-Assembly Print If the promise of nanotechnology is to be fulfilled, nanoparticles will have to be able to make something of themselves. An important advance toward this goal has been achieved by researchers who have found a simple and yet powerfully robust way to induce nanoparticles to assemble themselves into complex arrays. By adding specific types of small molecules to mixtures of nanoparticles and polymers, they were able to direct the self-assembly of the nanoparticles into arrays of one, two, and even three dimensions with no chemical modification of either the nanoparticles or the block copolymers. In addition, the application of external stimuli, such as light and/or heat, can be used to further direct the assemblies of nanoparticles for even finer and more complex structural details, a result verified by small-angle x-ray scattering (SAXS) at the ALS.

168

Guided Self-Assembly of Gold Thin Films  

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

Guided Self-Assembly of Gold Thin Films Print Guided Self-Assembly of Gold Thin Films Print Nanoparticles-man-made atoms with unique optical, electrical, and mechanical properties-have become key components in many fields of science. If nanoparticles could be coaxed into routinely assembling themselves into predictable complex structures and hierarchical patterns, devices could be mass-produced that are one thousand times smaller than today's microtechnologies. Berkeley Lab and UC Berkeley scientists have made progress toward this goal, successfully directing the self--assembly of nanoparticles into device-ready thin films, which have potential applications in fields ranging from computer memory storage to energy harvesting and storage, from catalysis to light management, and into the emerging new field of plasmonics.

169

A New Route to Nano Self-Assembly  

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

A New Route to Nano Self-Assembly Print A New Route to Nano Self-Assembly Print If the promise of nanotechnology is to be fulfilled, nanoparticles will have to be able to make something of themselves. An important advance toward this goal has been achieved by researchers who have found a simple and yet powerfully robust way to induce nanoparticles to assemble themselves into complex arrays. By adding specific types of small molecules to mixtures of nanoparticles and polymers, they were able to direct the self-assembly of the nanoparticles into arrays of one, two, and even three dimensions with no chemical modification of either the nanoparticles or the block copolymers. In addition, the application of external stimuli, such as light and/or heat, can be used to further direct the assemblies of nanoparticles for even finer and more complex structural details, a result verified by small-angle x-ray scattering (SAXS) at the ALS.

170

Guided Self-Assembly of Gold Thin Films  

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

Guided Self-Assembly of Gold Thin Films Print Guided Self-Assembly of Gold Thin Films Print Nanoparticles-man-made atoms with unique optical, electrical, and mechanical properties-have become key components in many fields of science. If nanoparticles could be coaxed into routinely assembling themselves into predictable complex structures and hierarchical patterns, devices could be mass-produced that are one thousand times smaller than today's microtechnologies. Berkeley Lab and UC Berkeley scientists have made progress toward this goal, successfully directing the self--assembly of nanoparticles into device-ready thin films, which have potential applications in fields ranging from computer memory storage to energy harvesting and storage, from catalysis to light management, and into the emerging new field of plasmonics.

171

Real Time Monitoring of Self Assembled Monolayers Using ATR: Implications  

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

Real Time Monitoring of Self Assembled Monolayers Using ATR: Implications Real Time Monitoring of Self Assembled Monolayers Using ATR: Implications to Atmospheric Organic Surfaces Speaker(s): Yael Dubowski Date: December 10, 2003 - 12:00pm Location: Bldg. 90 Seminar Host/Point of Contact: Hugo Destaillats Most studies of heterogeneous reactions on aerosols have focused on their implications for gas phase species. Less attention, however, has been given to the modification of aerosol surfaces during such reactions. Alteration of aerosol surface species may affect their hygroscopic and radiative properties as well as their reactivity toward other atmospheric trace species. In the present study, we use self-assembled organic monolayers (SAM) as proxies for atmospheric organic aerosols. Detection of even very short carbon chains (i.e., C3) as well as continuous monitoring of the SAMs

172

A New Route to Nano Self-Assembly  

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

A New Route to Nano Self-Assembly Print A New Route to Nano Self-Assembly Print If the promise of nanotechnology is to be fulfilled, nanoparticles will have to be able to make something of themselves. An important advance toward this goal has been achieved by researchers who have found a simple and yet powerfully robust way to induce nanoparticles to assemble themselves into complex arrays. By adding specific types of small molecules to mixtures of nanoparticles and polymers, they were able to direct the self-assembly of the nanoparticles into arrays of one, two, and even three dimensions with no chemical modification of either the nanoparticles or the block copolymers. In addition, the application of external stimuli, such as light and/or heat, can be used to further direct the assemblies of nanoparticles for even finer and more complex structural details, a result verified by small-angle x-ray scattering (SAXS) at the ALS.

173

A New Route to Nano Self-Assembly  

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

A New Route to Nano Self-Assembly Print A New Route to Nano Self-Assembly Print If the promise of nanotechnology is to be fulfilled, nanoparticles will have to be able to make something of themselves. An important advance toward this goal has been achieved by researchers who have found a simple and yet powerfully robust way to induce nanoparticles to assemble themselves into complex arrays. By adding specific types of small molecules to mixtures of nanoparticles and polymers, they were able to direct the self-assembly of the nanoparticles into arrays of one, two, and even three dimensions with no chemical modification of either the nanoparticles or the block copolymers. In addition, the application of external stimuli, such as light and/or heat, can be used to further direct the assemblies of nanoparticles for even finer and more complex structural details, a result verified by small-angle x-ray scattering (SAXS) at the ALS.

174

A New Route to Nano Self-Assembly  

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

A New Route to Nano Self-Assembly Print A New Route to Nano Self-Assembly Print If the promise of nanotechnology is to be fulfilled, nanoparticles will have to be able to make something of themselves. An important advance toward this goal has been achieved by researchers who have found a simple and yet powerfully robust way to induce nanoparticles to assemble themselves into complex arrays. By adding specific types of small molecules to mixtures of nanoparticles and polymers, they were able to direct the self-assembly of the nanoparticles into arrays of one, two, and even three dimensions with no chemical modification of either the nanoparticles or the block copolymers. In addition, the application of external stimuli, such as light and/or heat, can be used to further direct the assemblies of nanoparticles for even finer and more complex structural details, a result verified by small-angle x-ray scattering (SAXS) at the ALS.

175

Controlled Self-Assembly of Periodic and Aperiodic Cluster Crystals  

Science Journals Connector (OSTI)

Soft particles are known to overlap and form stable clusters that self-assemble into periodic crystalline phases with density-independent lattice constants. We use molecular dynamics simulations in two dimensions to demonstrate that, through a judicious design of an isotropic pair potential, one can control the ordering of the clusters and generate a variety of phases, including decagonal and dodecagonal quasicrystals. Our results confirm analytical predictions based on a mean-field approximation, providing insight into the stabilization of quasicrystals in soft macromolecular systems, and suggesting a practical approach for their controlled self-assembly in laboratory realizations using synthesized soft-matter particles.

Kobi Barkan; Michael Engel; Ron Lifshitz

2014-08-28T23:59:59.000Z

176

Nanotechnology and Quasicrystals: From self assembly to photonic applications  

E-Print Network (OSTI)

After providing a concise overview on quasicrystals and their discovery more than a quarter of a century ago, I consider the unexpected interplay between nanotechnology and quasiperiodic crystals. Of particular relevance are efforts to fabricate artificial functional micro- or nanostructures, as well as efforts to control the self-assembly of nanostructures, where current knowledge about the possibility of having long-range order without periodicity can provide significant advantages. I discuss examples of systems ranging from artificial metamaterials for photonic applications, through self-assembled soft matter, to surface waves and optically-induced nonlinear photonic quasicrystals.

Ron Lifshitz

2008-10-28T23:59:59.000Z

177

Method of Synthesis of Proton Conducting Materials  

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

Method of Synthesis of Proton Conducting Materials Method of Synthesis of Proton Conducting Materials Method of Synthesis of Proton Conducting Materials A method of producing a proton conducting material. Available for thumbnail of Feynman Center (505) 665-9090 Email Method of Synthesis of Proton Conducting Materials A method of producing a proton conducting material, comprising adding a pyrophosphate salt to a solvent to produce a dissolved pyrophosphate salt; adding an inorganic acid salt to a solvent to produce a dissolved inorganic acid salt; adding the dissolved inorganic acid salt to the dissolved pyrophosphate salt to produce a mixture; substantially evaporating the solvent from the mixture to produce a precipitate; and calcining the precipitate at a temperature of from about 400.degree. C. to about

178

A New Route to Nano Self-Assembly  

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

A New Route to Nano Self-Assembly A New Route to Nano Self-Assembly A New Route to Nano Self-Assembly Print Wednesday, 24 February 2010 00:00 If the promise of nanotechnology is to be fulfilled, nanoparticles will have to be able to make something of themselves. An important advance toward this goal has been achieved by researchers who have found a simple and yet powerfully robust way to induce nanoparticles to assemble themselves into complex arrays. By adding specific types of small molecules to mixtures of nanoparticles and polymers, they were able to direct the self-assembly of the nanoparticles into arrays of one, two, and even three dimensions with no chemical modification of either the nanoparticles or the block copolymers. In addition, the application of external stimuli, such as light and/or heat, can be used to further direct the assemblies of nanoparticles for even finer and more complex structural details, a result verified by small-angle x-ray scattering (SAXS) at the ALS.

179

BULK TITANIUM MICROFLUIDIC NETWORKS FOR PROTEIN SELF-ASSEMBLY STUDIES  

E-Print Network (OSTI)

BULK TITANIUM MICROFLUIDIC NETWORKS FOR PROTEIN SELF-ASSEMBLY STUDIES E.R. Parker1 , L.S. Hirst2 developed micromachining technique to fabricate microfluidic networks in thin titanium foils. These devices relevant conditions. Keywords: bulk titanium, cytoskeleton proteins, microfluidics, surface modification 1

MacDonald, Noel C.

180

Design of Patchy Particles Using Quaternary Self-Assembled Monolayers  

Science Journals Connector (OSTI)

patchy particles; self-assembly; quaternary; phase separation; dissipative particle dynamics ... Figure 1b shows a patchy particle with the SAM separated into equal quadrants; we refer to this particle as the Brahma particle, in reference to the Hindu god of creation, who is traditionally depicted with four heads. ...

Ines C. Pons-Siepermann; Sharon C. Glotzer

2012-04-26T23:59:59.000Z

Note: This page contains sample records for the topic "materials synthesis self-assembly" 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

Simulating the Self-Assembly of Gemini (Dimeric) Surfactants  

Science Journals Connector (OSTI)

...aggregates formed by surfactant molecules are known...clean-ing, and soil cleanup. Molecular...Simulations at different surfactant concentrations indicate...understanding of surfactant self-assembly...removal of stains in a washing machine (1...surfactants for soil cleanup and enhanced...

S. Karaborni; K. Esselink; P. A. J. Hilbers; B. Smit; J. Karthauser; N. M. van Os; R. Zana

1994-10-14T23:59:59.000Z

182

An STM Study of Molecular Self-Assemblies on Cu(111): Structure, Interaction, and Effects of Confinement  

E-Print Network (OSTI)

mechanism for molecular self?assembly  on metal substrates: Heim, D.  et al.  Self?Assembly of Flexible One?Dimensional coordination chemistry and self?assembly.   Dalton T, 2794?

Luo, Miaomiao

2012-01-01T23:59:59.000Z

183

Protein folding and misfolding: a paradigm of self–assembly and regulation in complex biological systems  

Science Journals Connector (OSTI)

...self-assembly, for instance in nanotechnology. More fundamentally, we...self-assembly, for instance in nanotechnology. More fundamentally, we...self-organization; nanotechnology; biological evolution One...biology, physiology and medicine. No individual level of...

2003-01-01T23:59:59.000Z

184

Electrostatic Self-Assembly of Pt-around-Au Nanocomposite with...  

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

Self-Assembly of Pt-around-Au Nanocomposite with High Activity towards Formic Acid Oxidation. Electrostatic Self-Assembly of Pt-around-Au Nanocomposite with High Activity towards...

185

Construction of multifunctional supramolecular architecture via coordination-driven self-assembly.  

E-Print Network (OSTI)

??Research conducted in the area of design and self-assembly of self-assembled supramolecular structures has made much progress over the last three decades. In this broad… (more)

Ghosh, Koushik

2010-01-01T23:59:59.000Z

186

Self-assembly of Self-similar Structures by Active Tiles.  

E-Print Network (OSTI)

??The natural capacity of DNA for molecular self-assembly has already been exploited to create DNA based tiles which can self-assemble into nano-scale arrays and carry… (more)

Karpenko, Daria

2012-01-01T23:59:59.000Z

187

Self-Assembly by Design: From Structure and Function to Nanoscale Construction.  

E-Print Network (OSTI)

??This thesis is devoted to the discovery and application of fundamental design principles for molecular self-assembly. Self-assembled monolayer (SAMs) of organic thiols on Au{111} are… (more)

Hohman , James

2011-01-01T23:59:59.000Z

188

Role of hydrophobicity, aromaticity, and turn nucleation in peptide self-assembly.  

E-Print Network (OSTI)

??Peptide self-assembly into cross-? amyloid is the hallmark of several amyloid pathologies and the inspiration for biomaterials. Peptide self-assembly is governed by noncovalent interactions such… (more)

Doran, Todd M. (1983 - )

2012-01-01T23:59:59.000Z

189

Self-Assembly of Electron Donor?Acceptor Dyads into Ordered Architectures in Two and Three Dimensions:? Surface Patterning and Columnar “Double Cables”  

Science Journals Connector (OSTI)

Self-Assembly of Electron Donor?Acceptor Dyads into Ordered Architectures in Two and Three Dimensions:? Surface Patterning and Columnar “Double Cables” ... We report the synthesis and characterization of covalent dyads and multiads of electron acceptors (A) and donors (D), with the purpose of exploiting their nanophase separation behavior toward (a) two-dimensional (2D) surface patterning with well-defined integrated arrays of dissimilar molecular electronic features and (b) bulk self-assembly to noncovalent columnar versions of the so-called “double cable” systems, the likes of which could eventually provide side-by-side percolation pathways for electrons and holes in solar cells. ...

Paolo Samorì; Xiaomin Yin; Natalia Tchebotareva; Zhaohui Wang; Tadeusz Pakula; Frank Jäckel; Mark D. Watson; Alessandro Venturini; Klaus Müllen; Jürgen P. Rabe

2004-02-28T23:59:59.000Z

190

Heirarchical Self Assembly: Self Organized nano-structures in a nematically ordered matrix of self assembled polymeric chains  

E-Print Network (OSTI)

We report many different nano-structures which are formed when model nano-particles of different sizes (diameter {\\sigma} n ) are allowed to aggregate in a background matrix of semi-flexible self assembled polymeric worm like micellar chains. The different nano-structures are formed by the dynamical arrest of phase-separating mixtures of micellar monomers and nano-particles. The different mor- phologies obtained are the result of an interplay of the available free volume, the elastic energy of deformation of polymers, the density (chemical potential) of the nano-particles in the polymer ma- trix and, of course, the ratio of the size of self assembling nano-particles and self avoidance diameter of polymeric chains. We have used a hybrid semi-grand canonical Monte Carlo simulation scheme to obtain the (non-equilibrium) phase diagram of the self-assembled nano-structures. We observe rod-like structures of nano-particles which get self assembled in the gaps between the nematically ordered chains as well as percolating gel-like network of conjoined nanotubes. We also find a totally unexpected interlocked crystalline phase of nano-particles and monomers, in which each crytal plane of nanoparticles is separated by planes of perfectly organized polymer chains. We identified the con- dition which leads to such interlocked crystal structure. We suggest experimental possibilities of how the results presented in this paper could be used to obtain different nano-structures in the lab.

Shaikh Mubeena; Apratim Chatterji

2014-12-04T23:59:59.000Z

191

A Geometrical Approach to the Incompatible Substructure Problem in Parallel Self-Assembly  

E-Print Network (OSTI)

A Geometrical Approach to the Incompatible Substructure Problem in Parallel Self-Assembly Navneet. One chal- lenge in parallel self-assembly is to reduce the number of incompatible substructures a simple approach to component design led components to self-assemble into incompatible substructures

Libre de Bruxelles, Université

192

Self-Assembly in Chains, Rings, and Branches: A Single Component System with Two Critical Points  

E-Print Network (OSTI)

Self-Assembly in Chains, Rings, and Branches: A Single Component System with Two Critical Points October 2013) We study the interplay between phase separation and self-assembly in chains, rings. The emergence of the lower critical point is caused by the self-assembly of rings taking place in the vapor

Sciortino, Francesco

193

Grammatical Self Assembly for Planar Tiles Robert Ghrist and David Lipsky  

E-Print Network (OSTI)

Grammatical Self Assembly for Planar Tiles Robert Ghrist and David Lipsky Department of Mathematics grammatical process for planar self-assembling systems with conformal switching which in- stantiates are particularly concerned with `programmable' self-assembly of mechanical devices at small scales. A re- cent NASA

Ghrist, Robert W.

194

Dimension Augmentation and Combinatorial Criteria for Efficient Error-resistant DNA Self-assembly  

E-Print Network (OSTI)

Dimension Augmentation and Combinatorial Criteria for Efficient Error-resistant DNA Self-assembly Abstract DNA self-assembly has emerged as a rich and promising primitive for nano-technology. Experimental-correction mech- anisms have been proposed for the tile model of self- assembly. These error-correction mechanisms

Goel, Ashish

195

Self-Assembling Tile Systems that Heal from Small Fragments Stanford University  

E-Print Network (OSTI)

Self-Assembling Tile Systems that Heal from Small Fragments Holin Chen Stanford University holin systems have proved to be a useful model for understanding self-assembly at the nano scale. Self-healing tile systems, introduced by Winfree, have the property that the self-assembled shape can recover from

Goel, Ashish

196

Supplementary Information for: Integrating DNA Strand Displacement Circuitry with DNA Tile Self-assembly  

E-Print Network (OSTI)

Supplementary Information for: Integrating DNA Strand Displacement Circuitry with DNA Tile Self-assembly of Contents: · Supplementary Figures 1. Native polyacrylamide gel electrophoresis of DNA tile self-assembly 2. UV absorbance annealing and melting curves of DNA tile self-assembly 3. Characterization

Zhang, David Yu

197

MODELING OF CAPILLARY FORCES AND BINDING SITES FOR FLUIDIC SELF-ASSEMBLY  

E-Print Network (OSTI)

MODELING OF CAPILLARY FORCES AND BINDING SITES FOR FLUIDIC SELF-ASSEMBLY Karl F. Böhringer 1-1774 ABSTRACT Massively parallel self-assembly is emerging as an efficient, low-cost alternative to conventional pick-and-place assembly of microfabricated components. The fluidic self-assembly technique we have

198

Self-Assembly in Mixtures of Polymers and Small Associating Molecules Haim Diamant and David Andelman*  

E-Print Network (OSTI)

Self-Assembly in Mixtures of Polymers and Small Associating Molecules Haim Diamant and David of the interaction, compete with intrachain repulsion and eventually drive a joint self-assembly of the two species with experiments on the onset of self-assembly in diverse polymer- surfactant systems. The threshold concentration

Andelman, David

199

Peptide self-assembly as a model of proteins in the pre-genomic world  

E-Print Network (OSTI)

Peptide self-assembly as a model of proteins in the pre-genomic world Indraneel Ghosh1 and Jean-based biopolymers have been designed to self assemble. Addresses 1 Department of Chemistry, University of Arizona a range of catalytic activities [3,4]. However, there has also been great interest in exploring other self-assembling

Ghosh, Indraneel

200

Self-Assembly of Microscale Objects at a Liquid/Liquid Interface through Lateral Capillary Forces  

E-Print Network (OSTI)

Self-Assembly of Microscale Objects at a Liquid/Liquid Interface through Lateral Capillary Forces allowed to self-assemble at the perfluorodecalin/water interface. These plates were fabricated from, the designs of hydrophobic edges necessary to generate menisci useful in self-assembly were different for 100

Prentiss, Mara

Note: This page contains sample records for the topic "materials synthesis self-assembly" 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

Invadable Self-Assembly: Combining Robustness with Efficiency Ho-Lin Chen  

E-Print Network (OSTI)

Invadable Self-Assembly: Combining Robustness with Efficiency Ho-Lin Chen Stanford University Qi California Pablo Moisset de Espan´es ¶ University of Southern California Abstract DNA self-assembly. In nature, DNA self-assembly is often equipped with explicit mechanisms for both error prevention and error

Goel, Ashish

202

DOI: 10.1002/chem.200802337 Cyclic PeptidePolymer Complexes and Their Self-Assembly  

E-Print Network (OSTI)

DOI: 10.1002/chem.200802337 Cyclic Peptide­Polymer Complexes and Their Self-Assembly Dominique Rationally designed cyclic peptides with flat conformations can self-assemble into tubular nanostructures. In a recent study,[5] our groups found that the medium in which the self-assembly of cyclic peptides takes

Zhao, Yue

203

The self-assembly of paths and squares at temperature 1 Pierre-Etienne Meunier  

E-Print Network (OSTI)

The self-assembly of paths and squares at temperature 1 Pierre-´Etienne Meunier Abstract We prove known upper bound. Non-cooperative self-assembly, also known as "temperature 1", is where tiles bind in algorithmic self-assembly, published by Rothe- mund and Winfree in STOC 2000, in the case where growth starts

Paris-Sud XI, Université de

204

Self-Assembly Techniques for Massively Parallel Packaging of MEMS Devices  

E-Print Network (OSTI)

Self-Assembly Techniques for Massively Parallel Packaging of MEMS Devices Jiandong Fang-1346, or to the author. Signature Date July 31, 2006 #12;#12;University of Washington Abstract Self-Assembly Techniques. B¨ohringer Electrical Engineering This dissertation investigates applications of self-assembly

205

Self-Assembly of Peptide Porphyrin Complexes: Toward the Development of Smart Biomaterials  

E-Print Network (OSTI)

Self-Assembly of Peptide Porphyrin Complexes: Toward the Development of Smart Biomaterials Brian C by synthetic chemical methods and their ability to fold and self- assemble into well-defined three For example, peptides have been engineered to self- assemble into nanofilaments with structures that respond

Fairman, Robert

206

Parallel Molecular Computations of Pairwise Exclusive-Or (XOR) Using DNA "String Tile" Self-Assembly  

E-Print Network (OSTI)

Parallel Molecular Computations of Pairwise Exclusive-Or (XOR) Using DNA "String Tile" Self-Assembly of the satisfiability problems. Self-assembly of DNA nanostructures is theoretically an efficient method of executing parallel computation where information is encoded in DNA tiles and a large number of tiles can be self-assembled

Reif, John H.

207

Self-assembling DNA Nanostructures for Patterned Molecular Assembly Thomas H. LaBeana  

E-Print Network (OSTI)

1 Self-assembling DNA Nanostructures for Patterned Molecular Assembly Thomas H. LaBeana , Kurt V@cs.duke.edu; Tel: (919)660-65685 Abstract The Chapter describes the use of DNA for molecular-scale self-assembly with a discussion of DNA-nanostructures, starting with the self-assembly of various building-blocks known as DNA

Reif, John H.

208

Self-Assembly of Regioregular, Amphiphilic Polythiophenes into Highly Ordered -Stacked  

E-Print Network (OSTI)

Self-Assembly of Regioregular, Amphiphilic Polythiophenes into Highly Ordered -Stacked Conjugated of Chemistry, Carnegie Mellon UniVersity Pittsburgh, PennsylVania 15213 ReceiVed March 31, 1998 Molecular self-assembly of supramolecular structure. In the area of conjugated (or conducting) organic polymers, self-assembly has been used

McCullough, Richard D.

209

Self-Assembly of Flat Micro Components by Capillary Forces and Shape Recognition  

E-Print Network (OSTI)

Self-Assembly of Flat Micro Components by Capillary Forces and Shape Recognition J. Fang, S. Liang, K. Wang, X. Xiong, K. F. Böhringer* This paper summarizes our recent reports on self-assembly of flat micro components based on two major mechanisms: capillary-driven self-assembly and feature

210

Rational Design of a Reversible pH-Responsive Switch for Peptide Self-Assembly  

E-Print Network (OSTI)

Rational Design of a Reversible pH-Responsive Switch for Peptide Self-Assembly Yuri Zimenkov interwound R-helices, has inspired the design of synthetic peptide systems that self-assemble be coupled to supramolecular structure to re-create the self-assembly behavior that is characteristic

Breedveld, Victor

211

Self-assembly of polyhedral shells: A molecular dynamics study D. C. Rapaport*  

E-Print Network (OSTI)

Self-assembly of polyhedral shells: A molecular dynamics study D. C. Rapaport* Physics Department) The use of reduced models for investigating the self-assembly dynamics underlying protein shell formation in spherical viruses is described. The spontaneous self-assembly of these polyhedral, supramolecular structures

Rapaport, Dennis C.

212

Guided Self-Assembly of Au Nanocluster Arrays Electronically Coupled to Semiconductor Device Layers  

E-Print Network (OSTI)

Guided Self-Assembly of Au Nanocluster Arrays Electronically Coupled to Semiconductor Device Layers diameter Au clusters within patterned regions on GaAs device layers, thus demonstrating guided self-assembly ordering of the clusters is achieved by a chemical self- assembly process, while micron scale patterning

213

Rapid self-assembly of brush block copolymers to photonic crystals  

E-Print Network (OSTI)

Rapid self-assembly of brush block copolymers to photonic crystals Benjamin R. Sveinbjörnssona,1 demonstrate the rapid self-assembly of brush block copolymers to nanostructures with photonic bandgaps control of the polymer molecular weight and the method of self-assembly. These polymers could be developed

Atwater, Harry

214

Self-assembly, modularity and physical complexity S. E. Ahnert,1  

E-Print Network (OSTI)

Self-assembly, modularity and physical complexity S. E. Ahnert,1 I. Johnston,2 T. M. A. Fink,3, 4 structure through self-assembly. Our procedure can be adapted to any given geometry, and thus to any given type of physical system. We illustrate our approach using self-assembling polyominoes, and demonstrate

Halligan, Daniel

215

Self-assembly of oxide-supported metal clusters into ring-like Kristoffer Meinander,  

E-Print Network (OSTI)

Self-assembly of oxide-supported metal clusters into ring-like structures Kristoffer Meinander, Kai, Finland Abstract Self-assembly is a phenomenon that continuously occurs at the nanoscale, as atoms form of these organized systems, but the precise mechanism, with which this self-assembly progresses, is seldom known

Nordlund, Kai

216

Self-Assembly for Maximum Yields Under Constraints Michael J. Fox and Jeff S. Shamma  

E-Print Network (OSTI)

Self-Assembly for Maximum Yields Under Constraints Michael J. Fox and Jeff S. Shamma Abstract-- We present an algorithm that, given any target tree, synthesizes reversible self-assembly rules that provide states that cannot be recovered from the unlabeled graph. I. INTRODUCTION Self-assembly is the phenomenon

Shamma, Jeff S.

217

Prediction of Ultra-High Aspect Ratio Nanowires from Self-Assembly  

E-Print Network (OSTI)

Prediction of Ultra-High Aspect Ratio Nanowires from Self-Assembly Zhigang Wu and Jeffrey C to investigate the possible self-assembly of nanoscale objects into ultrahigh aspect ratio chains and wires. Self-assembly17,18 from nanosize building blocks is regarded as one of the most promising methods

Wu, Zhigang

218

Randomized Self-Assembly for Exact Shapes Department of Computer Science  

E-Print Network (OSTI)

Randomized Self-Assembly for Exact Shapes David Doty Department of Computer Science Iowa State question of Kao and Schweller (Randomized Self-Assembly for Approximate Shapes, ICALP 2008), who showed how the approximation could be made exact with high probability. 1. INTRODUCTION Self-assembly is a term used

Doty, David

219

Thesis for the degree of Doctor of Philosophy DNA-Mediated Self-Assembly  

E-Print Network (OSTI)

Thesis for the degree of Doctor of Philosophy DNA-Mediated Self-Assembly of Nanostructures Theory Sundsvall, Sweden 2007 #12;DNA-Mediated Self-Assembly of Nanostructures { Theory and Experiments Bj¨orn H Kopiering Sundsvall, Sweden 2007 #12;Till Joel och Ragnar #12;#12;DNA-Mediated Self-Assembly

Högberg, Björn

220

Automated Self-Assembly Programming Paradigm: Initial Investigations Lin Li, Natalio Krasnogor, Jon Garibaldi  

E-Print Network (OSTI)

Automated Self-Assembly Programming Paradigm: Initial Investigations Lin Li, Natalio Krasnogor, Jon This paper presents a model that simulates a self- assembly process for software components. Initial inves- tigations on the Automated Self-Assembly Programming Paradigm (ASAP2 ) is presented whereby software compo

Aickelin, Uwe

Note: This page contains sample records for the topic "materials synthesis self-assembly" 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

SELF-ASSEMBLY OF MICRO PUMPS WITH HIGH UNIFORMITY IN PERFORMANCE  

E-Print Network (OSTI)

SELF-ASSEMBLY OF MICRO PUMPS WITH HIGH UNIFORMITY IN PERFORMANCE Jiandong Fang, Kerwin Wang, Karl F In this paper we report a novel capillary-force-driven self- assembly technique which proceeds in an air environment. We demonstrate this technique for the self-assembly of piezoelectric driving elements (PZT

222

Randomized Self-Assembly for Exact Shapes University of Western Ontario  

E-Print Network (OSTI)

Randomized Self-Assembly for Exact Shapes David Doty University of Western Ontario Department. This answers an open question of Kao and Schweller (Randomized Self-Assembly for Approximate Shapes, ICALP 2008 that are arbitrarily close to uniform. 1 Introduction Self-assembly is a term used to describe systems in which a small

Doty, David

223

Active Self-Assembly Daniel Arbuckle and Aristides A. G. Requicha  

E-Print Network (OSTI)

Active Self-Assembly Daniel Arbuckle and Aristides A. G. Requicha Laboratory for Molecular Robotics University of Southern California Los Angeles, USA darbuckl@usc.edu requicha@usc.edu Abstract--Self-assembly. Traditional, or passive, self-assembly techniques have great difficulty in producing the asymmetric structures

Southern California, University of

224

Using Self-Assembly To Prepare Multifunctional Diblock Copolymers Containing Azopyridine Moiety  

E-Print Network (OSTI)

Using Self-Assembly To Prepare Multifunctional Diblock Copolymers Containing Azopyridine Moiety Li, the azopyridine moiety made possible the easy use of self-assembly to add new functionalities to the PAzPy block transformed the amorphous PAzPy block into a liquid crystalline (LC) block. Self-assembly-induced LC phases

Zhao, Yue

225

Self-Assembly of Mesoscale Isomers: The Role of Pathways and Degrees of Freedom  

E-Print Network (OSTI)

Self-Assembly of Mesoscale Isomers: The Role of Pathways and Degrees of Freedom Shivendra Pandey1 geometric path sampling and a mesoscale experimental model to investigate the self-assembly of a model. Citation: Pandey S, Johnson D, Kaplan R, Klobusicky J, Menon G, et al. (2014) Self-Assembly of Mesoscale

Menon, Govind

226

Self-Assembled Metal/Molecule/Semiconductor Nanostructures for Electronic Device  

E-Print Network (OSTI)

565 Self-Assembled Metal/Molecule/Semiconductor Nanostructures for Electronic Device and Contact 27, 1999) Special Issue Paper 565 INTRODUCTION Self-assembly techniques provide a means to real- ize itself to the assembly of specific device structures or intercon- nected devices. For self-assembled

Woodall, Jerry M.

227

Self-Assembly of Filamentous Amelogenin Requires Calcium and Phosphate: From Dimers via Nanoribbons to Fibrils  

E-Print Network (OSTI)

Self-Assembly of Filamentous Amelogenin Requires Calcium and Phosphate: From Dimers via Nanoribbons, San Francisco, California 94143, United States *S Supporting Information ABSTRACT: Enamel matrix self-assembly tested if amelogenin, the main enamel matrix protein, can self-assemble into ribbon-like structures

Sali, Andrej

228

Self-assembly of 1-D organic semiconductor nanostructures Thuc-Quyen Nguyen,*a  

E-Print Network (OSTI)

Self-assembly of 1-D organic semiconductor nanostructures Thuc-Quyen Nguyen,*a Richard Martel: 10.1039/b609956d This review focuses on the molecular design and self-assembly of a new class have a permanent dipole moment that sums as the subunits self assemble into molecular stacks

Hone, James

229

Self-assembly of three-dimensional prestressed tensegrity structures from DNA  

E-Print Network (OSTI)

Self-assembly of three-dimensional prestressed tensegrity structures from DNA Tim Liedl1,2,3 , Bjo DNA that act as tension-bearing cables. Our DNA ten- segrity structures can self-assemble against of oligodeoxyribonucleotide `staple strands' that self-assemble into tensed structures despite kinetic barriers imposed

Högberg, Björn

230

Post-Self-Assembly Cross-Linking to Integrate Molecular Nanofibers with Copolymers in Oscillatory Hydrogels  

E-Print Network (OSTI)

Post-Self-Assembly Cross-Linking to Integrate Molecular Nanofibers with Copolymers in Oscillatory Information ABSTRACT: We study the use of post-self-assembly cross- linking to combine molecular nanofibers. The combination of supramolecular self-assembly with copolymerization offers a versatile and facile approach

Epstein, Irving R.

231

Pictures worth a thousand tiles, a geometrical programming language for self-assembly  

E-Print Network (OSTI)

Pictures worth a thousand tiles, a geometrical programming language for self-assembly Florent.becker@ens-lyon.fr February 14, 2008 Abstract We present a novel way to design self-assembling systems using a notion of signals for a given set of shapes, and how to transform these signals into a set of tiles which self-assemble

Paris-Sud XI, Université de

232

Two-dimensional 1,3,5-Tris(4-carboxyphenyl)benzene self-assembly at  

E-Print Network (OSTI)

Two-dimensional 1,3,5-Tris(4-carboxyphenyl)benzene self-assembly at the 1-phenyloctane and published work see http://pubs.rsc.org/en/journals/journalissues/tc. Two-dimensional (2D) self-assembly storage, selective ion exchange, high den- sity data storage, etc. Molecular self-assembly offers unique

Paris-Sud XI, Université de

233

Staged Self-Assembly: Nanomanufacture of Arbitrary Shapes with O(1) Glues  

E-Print Network (OSTI)

Staged Self-Assembly: Nanomanufacture of Arbitrary Shapes with O(1) Glues Erik D. Demaine Martin L We introduce staged self-assembly of Wang tiles, where tiles can be added dynamically in sequence- neering. Staging allows us to break through the traditional lower bounds in tile self-assembly by encoding

Demaine, Erik

234

Staged Self-Assembly: Nanomanufacture of Arbitrary Shapes with O(1) Glues  

E-Print Network (OSTI)

Staged Self-Assembly: Nanomanufacture of Arbitrary Shapes with O(1) Glues Erik D. Demaine Martin L We introduce staged self-assembly of Wang tiles, where tiles can be added dynamically in sequence-based bioengineering. Staging allows us to break through the traditional lower bounds in tile self-assembly by encoding

Demaine, Erik

235

HIGH YIELD BATCH PACKAGING OF MICRO DEVICES WITH UNIQUELY ORIENTING SELF-ASSEMBLY  

E-Print Network (OSTI)

HIGH YIELD BATCH PACKAGING OF MICRO DEVICES WITH UNIQUELY ORIENTING SELF-ASSEMBLY Jiandong Fang of uniquely orienting self-assembly with 2mm square diced silicon parts. Each silicon part has one hydrophobic shape-directed self-assembly assigns parts to complementary trenches in parallel [2]; (3) capillary

236

Self-repairing Self-assembled Structures Daniel Arbuckle and Aristides A. G. Requicha  

E-Print Network (OSTI)

1 Self-repairing Self-assembled Structures Daniel Arbuckle and Aristides A. G. Requicha Department.arbuckle@usc.edu, requicha@usc.edu Abstract-- This paper introduces a method by which structures can be self-assembled from by a process analogous to mitosis. I. INTRODUCTION Self-assembly agents have the potential to become an im

Southern California, University of

237

Guided self-assembly of Au nanocluster arrays electronically coupled to semiconductor device layers  

E-Print Network (OSTI)

Guided self-assembly of Au nanocluster arrays electronically coupled to semiconductor device layers clusters within patterned regions on GaAs device layers, thus demonstrating guided self-assembly ordering of the clusters is achieved by a chemical self-assembly process, while micron scale patterning

Woodall, Jerry M.

238

Robust, self-assembled, biocompatible films  

DOE Patents (OSTI)

The present invention provides a composite material including a substrate having an oxide surface, and, a continuous monolayer on the oxide surface, the monolayer including a silicon atom from a trifunctional alkyl/alkenyl/alkynyl silane group that attaches to the oxide surface, an alkyl/alkenyl/alkynyl portion of at least three carbon atoms, a polyalkylene glycol spacer group, and either a reactive site (e.g., a recognition ligand) or a site resistant to non-specific binding (e.g., a methoxy or the like) at the terminus of each modified SAM. The present invention further provides a sensor element, a sensor array and a method of sensing, each employing the composite material. Patterning is also provided together with backfilling to minimize non-specific binding.

Swanson, Basil I; Anderson, Aaron S.; Dattelbaum, Andrew M.; Schmidt, Jurgen G.

2014-06-24T23:59:59.000Z

239

Self-assembled porous media from particle-stabilized emulsions  

E-Print Network (OSTI)

We propose a new mechanism to create self-assembled porous media with highly tunable geometrical properties and permeabilities: We first allow a particle-stabilized emulsion to form from a mixture of two fluids and colloidal particles. Then, either one fluid phase or the particle layer is solidified, which can be achieved by techniques such as polymerization or freezing. Based on computer simulations we demonstrate that modifying only the particle wettability or concentration results in porous structures with a wide range of pore sizes and a permeability that can be varied by up to three orders of magnitude. We then discuss optimization of these properties for self-assembled filters or reactors and conclude that structures based on so-called "bijels" are most suitable candidates.

Stefan Frijters; Jens Harting

2014-08-13T23:59:59.000Z

240

Thermally and Photochemically Triggered Self-Assembly of Peptide Hydrogels  

E-Print Network (OSTI)

2. FTIR spectroscopy of FEK16 (30 mg/ mL) in D2O and CaCl2/D2O revealed strong amide I absorption the antiparallel conformation.4c The IR spectra of self-assembled FEK16 induced by CaCl2 addition was nearly the peptide adopted an R-helical conformation. At low peptide concentrations (CaCl2

Note: This page contains sample records for the topic "materials synthesis self-assembly" 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

Received 3 Oct 2013 | Accepted 19 Mar 2014 | Published 22 Apr 2014 Quantifying quality in DNA self-assembly  

E-Print Network (OSTI)

in DNA self-assembly Klaus F. Wagenbauer1,*, Christian H. Wachauf1,* & Hendrik Dietz1 Molecular self-assembly relies on measuring the content of unpaired DNA bases in self-assembled DNA objects using a fluorescent of nanoscale devices and machines that can accomplish custom tasks. Molecular self-assembly with DNA

Dietz, Hendrik

242

A Self-assembly Model of Time-Dependent Glue Sudheer Sahu, Peng Yin, and John H. Reif  

E-Print Network (OSTI)

A Self-assembly Model of Time-Dependent Glue Strength Sudheer Sahu, Peng Yin, and John H. Reif Abstract Self-assembly is a ubiquitous process in which small objects self- organize into larger model for theoretical studies of self-assembly. We propose a refined self-assembly model in which

Reif, John H.

243

Guided self-assembly of molecular dipoles on a substrate surface Y. F. Gao and Z. Suoa)  

E-Print Network (OSTI)

Guided self-assembly of molecular dipoles on a substrate surface Y. F. Gao and Z. Suoa) Department can self-assemble into a monolayer. This article models the process of self-assembly guided on the substrate surface, interact with one another through the intermolecular force, and self-assemble

Suo, Zhigang

244

Functionalized Graphene Sheets as Molecular Templates for Controlled Nucleation and Self-Assembly of Metal Oxide-Graphene Nanocomposites  

SciTech Connect

Graphene sheets have been extensively studied as a key functional component of graphene-based nanocomposites for electronics, energy, catalysis,and sensing applications. However, fundamental understanding of the interfacial binding and nucleation processes at graphene surfaces remains lacking, and the range of controlled structures that can be produced are limited. Here, by using a combination of theoretical and experimental approaches, we demonstrate that functionalized graphene sheets (FGS) can function as a new class of molecular templates to direct nucleation and self-assembly and produce novel, three-dimensional nanocomposite materials. Two key aspects are demonstrated: First, the functional groups on FGS surface determine the nucleation energy, and thus control the nucleation sites and nucleation density, as well as the preferred crystalline phases. Second, FGS can function as a template to direct the self-assembly of surfactant micelles and produce ordered, mesoporous arrays of crystalline metal oxides and composites.

Li, Xiaolin; Qi, Wen N.; Mei, Donghai; Sushko, Maria L.; Aksay, Ilhan A.; Liu, Jun

2012-09-25T23:59:59.000Z

245

Self-assembled porous MoO2/graphene microspheres towards high performance anodes for lithium ion batteries  

Science Journals Connector (OSTI)

Abstract Three dimensional (3D) porous self-assembled MoO2/graphene microspheres are successfully synthesized via microwave-assisted hydrothermal process in a short reaction time followed by thermal annealing. Such rationally designed multifunctional hybrid nanostructure is constructed from interconnected MoO2 nanoparticles (3–5 nm), which is self-assembled into ordered nanoporous microspheres via strong electrostatic attraction between graphene sheets and MoO2 nanoparticles. The MoO2/graphene hybrid structure delivers a high reversible capacity with significantly enhanced cycling stability (?1300 mAh g?1 after 80 cycles at C/10 rate) and excellent rate capability (913 and 390 mAh g?1 at 2C and 5C rates, respectively), when used as an anode material. The microspheres are interconnected and well encapsulated by the flexible graphene sheets, which not only accommodates large volume change but also increases the electrical conductivity of the hybrid structure. Moreover, nanoporous voids present in the 3D framework facilitate effective electrolyte penetration and make a direct contact with the active MoO2 nanoparticles, thereby greatly enhancing lithium ion transport. The strategic combination of self-assembly, nanoporous voids, 3D network and intriguing properties of graphene sheets provides excellent electrochemical performance as anode materials for Lithium ion battery applications.

Kowsalya Palanisamy; Yunok Kim; Hansu Kim; Ji Man Kim; Won-Sub Yoon

2015-01-01T23:59:59.000Z

246

Unifying Interfacial Self-Assembly and Surface Freezing  

SciTech Connect

X-ray investigations reveal that the monolayers formed at the bulk alkanol-sapphire interface are densely packed with the surface-normal molecules hydrogen bound to the sapphire. About 30-35 C above the bulk, these monolayers both melt reversibly and partially desorb. This system exhibits balanced intermolecular and molecule-substrate interactions which are intermediate between self-assembled and surface-frozen monolayers, each dominated by one interaction. The phase behavior is rationalized within a thermodynamic model comprising interfacial interactions, elasticity, and entropic effects. Separating the substrate from the melt leaves the monolayer structurally intact.

Ocko, B.M.; Hlaing, H.; Jepsen, P.N.; Kewalramani, S.; Tkachenko, A.; Pontoni, D.; Reichert, H.; Deutsch, M.

2011-03-30T23:59:59.000Z

247

Unifying Interfacial Self-Assembly and Surface Freezing  

SciTech Connect

X-ray investigations reveal that the monolayers formed at the bulk alkanol-sapphire interface are densely packed with the surface-normal molecules hydrogen bound to the sapphire. About 30-35 C above the bulk, these monolayers both melt reversibly and partially desorb. This system exhibits balanced intermolecular and molecule-substrate interactions which are intermediate between self-assembled and surface-frozen monolayers, each dominated by one interaction. The phase behavior is rationalized within a thermodynamic model comprising interfacial interactions, elasticity, and entropic effects. Separating the substrate from the melt leaves the monolayer structurally intact.

B Ocko; H Hlaing; P Jepsen; S Kewalramani; A Tkachenko; D Pontoni; H Reichert; M Deutsch

2011-12-31T23:59:59.000Z

248

Combinatorial synthesis of inorganic or composite materials  

DOE Patents (OSTI)

Methods and apparatus for the preparation and use of a substrate having an array of diverse materials in predefined regions thereon. A substrate having an array of diverse materials thereon is generally prepared by delivering components of materials to predefined regions on a substrate, and simultaneously reacting the components to form at least two materials or, alternatively, allowing the components to interact to form at least two different materials. Materials which can be prepared using the methods and apparatus of the present invention include, for example, covalent network solids, ionic solids and molecular solids. More particularly, materials which can be prepared using the methods and apparatus of the present invention include, for example, inorganic materials, intermetallic materials, metal alloys, ceramic materials, organic materials, organometallic materials, nonbiological organic polymers, composite materials (e.g., inorganic composites, organic composites, or combinations thereof), etc. Once prepared, these materials can be screened for useful properties including, for example, electrical, thermal, mechanical, morphological, optical, magnetic, chemical, or other properties. Thus, the present invention provides methods for the parallel synthesis and analysis of novel materials having useful properties.

Goldwasser, Isy (Palo Alto, CA); Ross, Debra A. (Mountain Ranch, CA); Schultz, Peter G. (La Jolla, CA); Xiang, Xiao-Dong (Danville, CA); Briceno, Gabriel (Baldwin Park, CA); Sun, Xian-Dong (Fremont, CA); Wang, Kai-An (Cupertino, CA)

2010-08-03T23:59:59.000Z

249

THE JOURNAL OF CHEMICAL PHYSICS 139, 121918 (2013) Combinatoric analysis of heterogeneous stochastic self-assembly  

E-Print Network (OSTI)

stochastic self-assembly Maria R. D'Orsogna,1,2 Bingyu Zhao,3 Bijan Berenji,1,2 and Tom Chou2,4 1 Department of heterogeneous nucleation and self-assembly in a closed sys- tem with a fixed total particle number M. INTRODUCTION The self-assembly of molecules and macroscopic parti- cles into larger units is a common process

Levine, Alex J.

250

Real time monitoring of superparamagnetic nanoparticle self-assembly on surfaces of magnetic recording media  

SciTech Connect

Nanoparticle self-assembly dynamics are monitored in real-time by detecting optical diffraction from an all-nanoparticle grating as it self-assembles on a grating pattern recorded on a magnetic medium. The diffraction efficiency strongly depends on concentration, pH, and colloidal stability of nanoparticle suspensions, demonstrating the nanoparticle self-assembly process is highly tunable. This metrology could provide an alternative for detecting nanoparticle properties such as colloidal stability.

Ye, L.; Pearson, T.; Crawford, T. M., E-mail: crawftm@mailbox.sc.edu [Department of Physics and Astronomy, University of South Carolina, 712 Main Street, Columbia, South Carolina 29208 (United States); Qi, B.; Cordeau, Y.; Mefford, O. T. [Department of Materials Science and Engineering, Clemson University, 161 Sirrine Hall, Clemson, South Carolina 29634 (United States); Center for Optical Materials Science and Engineering Technologies (COMSET), 91 Technology Dr., Anderson, South Carolina 29625 (United States)

2014-05-07T23:59:59.000Z

251

All-nanoparticle concave diffraction grating fabricated by self-assembly onto magnetically-recorded templates  

Science Journals Connector (OSTI)

Using the enormous magnetic field gradients present near the surface of magnetic recording media, we assemble diffraction gratings with lines consisting entirely of self-assembled...

Ye, L; Terry, B; Mefford, O T; Rinaldi, C; Crawford, T M

2013-01-01T23:59:59.000Z

252

E-Print Network 3.0 - activated ester self-assembled Sample Search...  

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

ester) Summary: behavior of DNA with the polymer to form self-assembled PHP esterDNA complexes was characterized... 3 and 4). Condensation of Polyanion by...

253

Optofluidic Three-Cimensional Self-Assembly of Vertically Patterned Microstructures Using Railed Microfluidics  

Science Journals Connector (OSTI)

We demonstrate optofluidic three-dimensional (3D) vertical self-assembly of two-dimensionally patterned microstructures using railed microfluidics. 3D railed assembly method is easy...

Chung, Su Eun; Jung, Yoonseok; Kwon, Sunghoon

254

Oligo(p-phenylene vinylene) amphiphiles and methods for self-assembly  

DOE Patents (OSTI)

Amphiphilic oligo(p-phenylene vinylene) compounds and methods of use en route to self-assembled composites and device fabrication.

Stupp, Samuel I. (Chicago, IL); Hulvat, James F. (Chicago, IL); Sofos, Marina (Evanston, IL); Tajima, Keisuke (Evanston, IL)

2008-05-13T23:59:59.000Z

255

Energy Conversion Materials Through Chemical Synthesis Route  

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

Conversion Materials Through Chemical Synthesis Route Conversion Materials Through Chemical Synthesis Route Speaker(s): Lionel Vayssieres Date: April 27, 2004 - 12:00pm Location: Bldg. 90 Seminar Host/Point of Contact: Samuel Mao The ability to design anisotropic nanoparticles with tailored aspect ratio and to order them into large 3-D arrays is an important challenge that scientists have to face to create functionalized nanomaterials. Our approach to control the size and shape of nanoparticles as well as the overall texture of nanoparticulate thin films is to tune their direct aqueous hydrolysis-condensation growth onto substrates by monitoring the interfacial thermodynamics of nanocrystals as well as their kinetics of heteronucleation. Growing materials at very low interfacial tension, i.e. at thermodynamically stable conditions, allows the experimental control of

256

Autonomous Programmable Biomolecular Devices Using Self-Assembled DNA Nanostructures1  

E-Print Network (OSTI)

in this area that makes use of synthetic DNA to self-assemble into DNA nanostructure devices. Recently of labs around the world. They are constructed primarily of synthetic DNA. A key principle in the studyAutonomous Programmable Biomolecular Devices Using Self-Assembled DNA Nanostructures1 John H Reif2

Reif, John H.

257

SELF-ASSEMBLED DNA NANOSTRUCTURES AND DNA-TEMPLATED SILVER NANOWIRES  

E-Print Network (OSTI)

helix bundles, and the cross-tiles as well as synthetic double-stranded DNA moleculesSELF-ASSEMBLED DNA NANOSTRUCTURES AND DNA-TEMPLATED SILVER NANOWIRES by Sung Ha Park Department;ABSTRACT SELF-ASSEMBLED DNA NANOSTRUCTURES AND DNA-TEMPLATED SILVER NANOWIRES by Sung Ha Park Department

Reif, John H.

258

Self-Assembled Micro-Honeycomb Network of Single-Walled Carbon Nanotubes for Solar Cells  

E-Print Network (OSTI)

1 Self-Assembled Micro-Honeycomb Network of Single-Walled Carbon Nanotubes for Solar Cells Kehang nanotubes (SWNTs) into a self-assembled micro-honeycomb network (-HN) for the application to SWNT- Si solar-assembled, micro- honeycomb network, water vapor treatment #12;3 Single-walled carbon nanotubes (SWNTs) feature

Maruyama, Shigeo

259

Self-assembly of surfactants in a supercritical solvent from lattice Monte Carlo simulations  

E-Print Network (OSTI)

Self-assembly of surfactants in a supercritical solvent from lattice Monte Carlo simulations Martin self-assembly of surfactants in a supercritical solvent by large-scale Monte Carlo simulations. CarbonCO2.3 Surfactant molecules used in scCO2 have two mutually incompatible components: a CO2-philic tail

Lisal, Martin

260

Polymer Nanocomposites through Controlled Self-Assembly of Cubic Silsesquioxane Scaffolds  

E-Print Network (OSTI)

Polymer Nanocomposites through Controlled Self-Assembly of Cubic Silsesquioxane Scaffolds Lei Zheng that are able to harness the fundamental forces of self-assembly to direct the generation of higher ordered is driven by reducing surface energy between chemically linked, yet incompatible, blocks.4,5 A limitation

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While these samples are representative of the content of NLEBeta,
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261

P-56 / A. Murauski P-56: Aligning Liquid Crystals Using Self-Assembled Monolayers  

E-Print Network (OSTI)

P-56 / A. Murauski P-56: Aligning Liquid Crystals Using Self-Assembled Monolayers Anatoli Murauski, this method is incompatible with localized control over LC alignment. Recently, anchoring of LC was demonstrated using low energy surfaces from self-assembled monolayers (SAMs) deposited from a liquid phase

262

DNA nanotubes and helical nanotapes via self-assembly of ssDNA-amphiphiles  

E-Print Network (OSTI)

DNA nanotubes and helical nanotapes via self- assembly of ssDNA-amphiphiles Timothy R. Pearcea and Efrosini Kokkoli*b DNA nanotubes were created using molecular self-assembly of single-stranded DNA (ss. The nanotube structures were formed by bilayers of amphiphiles, with the hydrophobic components forming

Kokkoli, Efie

263

DNA nanotubes self-assembled from triple-crossover tiles as templates for conductive nanowires  

E-Print Network (OSTI)

DNA nanotubes self-assembled from triple-crossover tiles as templates for conductive nanowires Dage on the construction and characterization of DNA nanotubes, a self-assembling superstructure composed of DNA tiles plane were used as the basic building blocks. Triple-crossover nanotubes display a constant diameter

Reif, John H.

264

Geometric Binding Site Design for Surface-Tension Driven Self-Assembly  

E-Print Network (OSTI)

Geometric Binding Site Design for Surface-Tension Driven Self-Assembly Xiaorong Xiong, Sheng 98195-2500 Email: xrxiong@u.washington.edu Abstract-- Surface-tension driven self-assembly techniques-assembly, micro assembly, MEMS, hy- drophobic, hydrophilic, surface energy, surface tension force, binding site

265

Self-Assembling Cyclic Peptides: Molecular Dynamics Studies of Dimers in Polar and Nonpolar Solvents  

E-Print Network (OSTI)

bilayers and spontaneously self-assemble into ion-transport-competent membrane channel structures. These nanotubes then display good channel-mediated ion-transport activity with rates exceed- ing 107 ions per membrane-active sequence space.1 Such self-assembling peptide nanotubes have been studied experimentally

Nielsen, Steven O.

266

Polymer Photonic Crystals by Self-Assembly From the Resnick Sustainability Institute  

E-Print Network (OSTI)

RESEARCH HIGHLIGHTS Polymer Photonic Crystals by Self-Assembly From the Resnick Sustainability Crystals by Self-Assembly Raymond Weitekamp THE RESNICK SUSTAINABILITY INSTITUTE AT THE CALIFORNIA potential impact. · The unique polymer architecture enables paintable photonic crystals · Blending of two

267

Polyvalent surface modification of hydrocarbon polymers via covalent layer-by-layer self-assembly  

E-Print Network (OSTI)

convenient and simple method leading to highly functionalized product that contains 6-8 % by weight PEI. Superhydrophobic PE films can be formed either from ionic LbL self-assembly of MWNT-NH-PEIs and poly(acrylic acid) or from covalent LbL self-assembly...

Liao, Kang-Shyang

2009-05-15T23:59:59.000Z

268

Absorption and photoluminescence spectroscopy on a single self-assembled charge-tunable quantum dot  

E-Print Network (OSTI)

Absorption and photoluminescence spectroscopy on a single self-assembled charge-tunable quantum dot PL and absorption spectroscopy on the same single self- assembled quantum dot in a charge the corresponding transition in absorption. We have developed a model of the Coulomb blockade to account

Ludwig-Maximilians-Universität, München

269

Molecular Self-Assembly of Jointed Molecules on a Metallic Substrate: From Single Molecule to Monolayer**  

E-Print Network (OSTI)

Molecular Self-Assembly of Jointed Molecules on a Metallic Substrate: From Single Molecule molecules adsorbed on metallic substrates. In this situation, self-assembled structures can be understood in relative simple terms considering molecule-molecule versus molecule-substrate interactions. In contrast

Paris-Sud XI, Université de

270

Self-assembly of carbon nanohelices: Characteristics and field electron emission properties  

E-Print Network (OSTI)

Self-assembly of carbon nanohelices: Characteristics and field electron emission properties Guangyu. Their field-emission properties were investigated. Carbon nanohelices were fabricated using microwave- plasma of self-assembled carbon nanohelices on iron needles using microwave plasma assisted chemical vapor

Zhang, Guangyu

271

Phase Diagrams of Electrostatically Self-Assembled Amphiplexes  

SciTech Connect

We present the phase diagrams of electrostatically self-assembled amphiplexes (ESA) comprised of poly(acrylic acid) (PAA), cetyltrimethylammonium chloride (CTACl), dodecane, pentanol, and water at three different NaCl salt concentrations: 100, 300, and 500 mM. This is the first report of phase diagrams for these quinary complexes. Adding a cosurfactant, we were able to swell the unit cell size of all long-range ordered phases (lamellar, hexagonal, Pm3n, Ia3d) by almost a factor of 2. The added advantage of tuning the unit cell size makes such complexes (especially the bicontinuous phases) attractive for applications in bioseparation, drug delivery, and possibly in oil recovery.

V Stanic; M Mancuso; W Wong; E DiMasi; H Strey

2011-12-31T23:59:59.000Z

272

Shock compression synthesis of hard materials  

SciTech Connect

The purpose of this research was to adapt the high explosives technology that was developed in conjunction with nuclear weapons programs to subjecting materials to ultra-high pressures and to explore the utility of this technique for the synthesis of hard materials. The research was conducted in collaboration with researchers at the University of Texas, Texas Tech University and Pantex (Mason and Hanger Corp.). The group designed, modeled, built, and tested a new device that allows quantitative recovery of grams of material that have been subjected to unprecedented pressures. The modeling work was done at Texas Tech and Pantex. The metal parts and material samples were made at the University of Texas, and Pantex machined the explosives, assembled the devices and conducted the detonations. Sample characterization was carried out at the University of Texas and Texas Tech.

Willson, C.G. [Univ. of Texas, Austin, TX (United States). Dept. of Chemistry

1999-03-01T23:59:59.000Z

273

Capillary Forces in Micro-Fluidic Self-Assembly Andreas Greiner, Jan Lienemann, Jan G. Korvink, Xiaorong Xiong*, Yael Hanein*,  

E-Print Network (OSTI)

Capillary Forces in Micro-Fluidic Self-Assembly Andreas Greiner, Jan Lienemann, Jan G. Korvink are coated with a hydro- phobic alkanethiol layer (a self-assembled monolayer, or SAM), and a lubricant

274

arXiv:1002.4996v1[cs.DM]26Feb2010 Triangular Self-Assembly  

E-Print Network (OSTI)

arXiv:1002.4996v1[cs.DM]26Feb2010 Triangular Self-Assembly Lila Kari Shinnosuke Seki Zhi Xu 5B7 {lila, sseki, zhi_xu}@csd.uwo.ca February 27, 2010 Abstract We discuss the self-assembly system in their laboratory by the method of self-assembly. One systematic study on this topic is the self-assembly of squares

Kari, Lila

275

Self-assembly of photo-reduced graphene-titania films.  

SciTech Connect

In an aim to develop photo-responsive composites, the UV photo-reduction of aqueous titanium oxide nanoparticle-graphene oxide (TiO{sub 2}-GO) dispersions (Lambert et al. J Phys. Chem. 2010 113 (46), 19812-19823) was undertaken. Photo-reduction led to the formation of a black precipitate as well as a soluble portion, comprised of titanium oxide nanoparticle-reduced graphene oxide (TiO{sub 2}-RGO). When allowed to slowly evaporate, self assembled titanium oxide nanoparticle-graphene oxide (SA-TiO{sub 2}-RGO) films formed at the air-liquid interface of the solution. The thickness of SARGO-TiO{sub 2} films range from {approx}30-100 nm when deposited on substrates, and appear to be comprised of a mosaic assembly of graphene nanosheets and TiO{sub 2}, as observed by scanning electron microscopy. Raman spectroscopy and X-ray photoelectron spectroscopy indicate that the graphene oxide is only partially reduced in the SA-TiO{sub 2}-RGO material. These films were also deposited onto inter-digitated electrodes and their photo-responsive behavior was examined. UV-exposure lead to a {approx} 200 kOhm decrease in resistance across the device, resulting in a cathodically biased film. The cathodic bias of the films was utilized for the subsequent reduction of Ag(NO{sub 3}) into silver (Ag) nanoparticles, forming a ternary Ag-(SA-RGO-TiO{sub 2}) composite. Various aspects of the self assembled films, their photoconductive properties as well as potential applications will be presented.

Lambert, Timothy N.; Chavez, Carlos A.; Bell, Nelson Simmons; Washburn, Cody M.; Brumbach, Michael Todd; Wheeler, David Roger; McKenzie, Bonnie Beth

2010-07-01T23:59:59.000Z

276

Journal of ELECTRONIC MATERIALS, Vol. 34, No. 5, 2005 Special Issue Paper Toward a Better Understanding of Synthesis and Processing of  

E-Print Network (OSTI)

Understanding of Synthesis and Processing of Ceramic/Self-Assembled Monolayer Bilayer Coatings T.O. SALAMI,1 Q-based deposition tech- niques, namely, an in-situ solution method (biomimetic) and a hydrothermal method, have been coverage, high-temperature processing and postannealing steps result in crack formation and film

Cho, Junghyun

277

Global-to-Local Rule Generation for Self-Assembly and Self-Repair by Robot Swarms  

E-Print Network (OSTI)

Global-to-Local Rule Generation for Self-Assembly and Self-Repair by Robot Swarms Daniel Arbuckle a reactive self-assembly technique intended for use in swarms of simple robots, the other a distributed in the possibility that swarms of general-purpose self-assembling robots might be used to replace many such objects

Southern California, University of

278

THE JOURNAL OF CHEMICAL PHYSICS 137, 244107 (2012) First passage times in homogeneous nucleation and self-assembly  

E-Print Network (OSTI)

and self-assembly Romain Yvinec,1 Maria R. D'Orsogna,2 and Tom Chou3 1 Université de Lyon, CNRS UMR 5208 of stochastic self-assembly of a fixed number of identical particles in a finite volume. We derive the backward configuration. In the limits of slow and fast self-assembly, we develop analytical approaches to calculate

D'Orsogna, Maria Rita

279

Surface Ligand Effects on Metal-Affinity Coordination to Quantum Dots: Implications for Nanoprobe Self-Assembly  

E-Print Network (OSTI)

Self-Assembly Allison M. Dennis,|, David C. Sotto, Bing C. Mei,, Igor L. Medintz,§ Hedi Mattoussi,1 is the self-assembly of biomolecules on a QD surface via polyhistidine coordination. This approach has been to evaluate the self-assembly of fluorescent proteins on the surface of QDs with eight distinct coatings

280

Self-Assembly of Hydrogen-Bonded Polymeric Rods Based on the Cyanuric Acid,Melamine Lattice  

E-Print Network (OSTI)

Self-Assembly of Hydrogen-Bonded Polymeric Rods Based on the Cyanuric Acid,Melamine Lattice Insung Received July 29, 1998. Revised Manuscript Received December 28, 1998 This paper describes the self-assembly) are interpreted as indicating that the self-assembly of a bisisocyanuric acid (bisCA) and a bismelamine (bis

Prentiss, Mara

Note: This page contains sample records for the topic "materials synthesis self-assembly" 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

Self-assembly of short DNA duplexes: from a coarse-grained model to experiments through a theoretical link  

E-Print Network (OSTI)

Self-assembly of short DNA duplexes: from a coarse-grained model to experiments through comprising 6 to 20 base pairs self-assemble into polydisperse semi- flexible chains due to hydrophobic on temperature and duplex length, such chains order into liquid crystal phases. Here, we investigate the self-assembly

Sciortino, Francesco

282

Mesoscale Self-Assembly: Capillary Bonds and Negative Menisci Ned Bowden, Scott R. J. Oliver, and George M. Whitesides*  

E-Print Network (OSTI)

Mesoscale Self-Assembly: Capillary Bonds and Negative Menisci Ned Bowden, Scott R. J. Oliver., Cambridge, Massachusetts 02138 ReceiVed: September 2, 1999 This paper describes the self-assembly) that examined the self-assembly of hexagonal plates of PDMS (F ) 1.05 g/cm3) that had a density close

Prentiss, Mara

283

Self-Assembly of Collagen on Flat Surfaces: The Interplay of Collagen-Collagen and Collagen-Substrate Interactions  

E-Print Network (OSTI)

Self-Assembly of Collagen on Flat Surfaces: The Interplay of Collagen-Collagen and Collagen also self-assemble in vitro from solution. While previous in vitro studies showed that the p such control could be exerted are still elusive. To address this issue and to be able to simulate self-assembly

Ciobanu, Cristian

284

Self-Assembly of Bifunctional Patchy Particles with Anisotropic Shape into Polymers Chains: Theory, Simulations, and Experiments  

E-Print Network (OSTI)

Self-Assembly of Bifunctional Patchy Particles with Anisotropic Shape into Polymers Chains: Theory into the nematic liquid crystal phases. This self-assembly is due to the stacking interactions between duplex. Comparison of numerical and theoretical results with experimental findings confirm that the DNA duplex self-assembly

Sciortino, Francesco

285

Phase and self-assembly transition induced by glycerolborax interaction in an aqueous surfactant two-phase system  

E-Print Network (OSTI)

Phase and self-assembly transition induced by glycerol­borax interaction in an aqueous surfactant 2009 DOI: 10.1039/b911564a We report that the phase and self-assembly transition in an aqueous in surfactant systems containing pH-sensitive components. Introduction The influence of glycerol on the self-assembly

Huang, Jianbin

286

Self-assembly of two-dimensional nanoclusters observed with STM: From surface molecules to surface superstructure  

E-Print Network (OSTI)

Self-assembly of two-dimensional nanoclusters observed with STM: From surface molecules to surface on the Si 111 - 3 3-Ag surface at submonolayer Au coverage. Self-assembly of these Au nanoclusters leads nanoclus- ter are discussed in terms of a substrate-mediated interaction among the Au adatoms, and the self-assembling

Hasegawa, Shuji

287

Self-assembly of hydrogen-bonded supramolecular strands from complementary melamine and barbiturate components with chiral  

E-Print Network (OSTI)

Self-assembly of hydrogen-bonded supramolecular strands from complementary melamine and barbiturate barbiturate 7 result in molecular recognition directed self-assembly in solution and in the solid state containing a dierent triazine enantiomer. Self-assembly takes place in biological systems with a high level

Rusell, K.C.

288

Molecular Self-Assembly of Functionalized Fullerenes on a Metal Surface Bogdan Diaconescu,1,* Teng Yang,2  

E-Print Network (OSTI)

Molecular Self-Assembly of Functionalized Fullerenes on a Metal Surface Bogdan Diaconescu,1,* Teng and theoretical study of the self-assembly of C60 molecules functionalized with long alkane chains on the (111(111) and that the unit cell size in the self-assembled monolayer is determined by the interactions

Pohl, Karsten

289

Self-Assembly of Gold Nanorods B. Nikoobakht, Z. L. Wang, and M. A. El-Sayed*,  

E-Print Network (OSTI)

ARTICLES Self-Assembly of Gold Nanorods B. Nikoobakht, Z. L. Wang, and M. A. El-Sayed*, Laser 27, 2000 Self-assembly of gold nanorods (NRs) with aspect ratio of 4.6 (12 nm in diameter and 50 and orientation symmetries of the self-assembled structures are determined. The factors affecting the formation

Wang, Zhong L.

290

DNA-based self-assembly of nanoelectronic devices is an emerging technology that has the potential to enable tera-  

E-Print Network (OSTI)

1 Abstract DNA-based self-assembly of nanoelectronic devices is an emerging technology that has the potential to enable tera- to peta-scale device integration. However, self-assembly cur- rently is limited examine the tradeoff between node complexity and control required during self- assembly to maximize

Lebeck, Alvin R.

291

Anandamide and analogous endocannabinoids: a lipid self-assembly study  

SciTech Connect

Anandamide, the endogenous agonist of the cannabinoid receptors, has been widely studied for its interesting biological and medicinal properties and is recognized as a highly significant lipid signaling molecule within the nervous system. Few studies have, however, examined the effect of the physical conformation of anandamide on its function. The study presented herein has focused on characterizing the self-assembly behaviour of anandamide and four other endocannabinoid analogues of anandamide, viz., 2-arachidonyl glycerol, arachidonyl dopamine, 2-arachidonyl glycerol ether (noladin ether), and o-arachidonyl ethanolamide (virodhamine). Molecular modeling of the five endocannabinoid lipids indicates that the highly unsaturated arachidonyl chain has a preference for a U or J shaped conformation. Thermal phase studies of the neat amphiphiles showed that a glass transition was observed for all of the endocannabinoids at {approx} -110 C with the exception of anandamide, with a second glass transition occurring for 2-arachidonyl glycerol, 2-arachidonyl glycerol ether, and virodhamine (-86 C, -95 C, -46 C respectively). Both anandamide and arachidonyl dopamine displayed a crystal-isotropic melting point (-4.8 and -20.4 C respectively), while a liquid crystal-isotropic melting transition was seen for 2-arachidonyl glycerol (-40.7 C) and 2-arachidonyl glycerol ether (-71.2 C). No additional transitions were observed for virodhamine. Small angle X-ray scattering and cross polarized optical microscopy studies as a function of temperature indicated that in the presence of excess water, both 2-arachidonyl glycerol and anandamide form co-existing Q{sub II}{sup G} (gyroid) and Q{sub II}{sup D} (diamond) bicontinuous cubic phases from 0 C to 20 C, which are kinetically stable over a period of weeks but may not represent true thermodynamic equilibrium. Similarly, 2-arachidonyl glycerol ether acquired an inverse hexagonal (HII) phase in excess water from 0 C to 40 C, while virodhamine and arachidonyl dopamine exist as an isotropic L{sub 2} phase, even at very low temperatures. Due to their preferential conformation and lipid self-assembly behaviour, all five endocannabinoids constitute high curvature lipids that can impart membrane stress within a cell membrane which has been linked to a number of membrane and membrane protein associated processes.

Sagnella, Sharon M.; Conn, Charlotte E.; Krodkiewska, Irena; Mulet, Xavier; Drummond, Calum J.

2014-09-24T23:59:59.000Z

292

Toward a Materials Genome Approach for Ionic Liquids: Synthesis...  

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

a Materials Genome Approach for Ionic Liquids: Synthesis Guided by Ab Initio Property Maps Previous Next List Fangyong Yan, Michael Lartey, Kuldeep Jariwala, Sage Bowser,...

293

Argonne CNM Highlight: Self-Assembly Kinetics of Two-Dimensional  

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

Self-Assembly Kinetics of Two-Dimensional Nanocrystal Superlattices Self-Assembly Kinetics of Two-Dimensional Nanocrystal Superlattices Two-dimensional nanocrystal superlattices Two-dimensional assembly of gold nanocrystals at a toluene-air interface during colloidal droplet evaporation process: in situ optical microscopy (top panel, inset is a TEM image of the array after drying) and time-resolved GISAXS (bottom panel a-b). Self-assembly of a crystalline phase with quasi-long-range positional order for two-dimensional nanocrystal superlattice (NSC) domains at the liquid-air interface during droplet evaporation has been observed. The NSCs were formed by depositing a colloidal suspension of highly monodisperse dodecanethiol-ligated gold nanocrystals. The kinetics of the self-assembly were immediately captured by in situ time-resolved grazing-incidence

294

Efficiency enhancement in GaAs solar cells using self-assembled microspheres  

Science Journals Connector (OSTI)

In this study we develop an efficient light harvesting scheme that can enhance the efficiency of GaAs solar cells using self-assembled microspheres. Based on the scattering of the...

Chang, Te-Hung; Wu, Pei-Hsuan; Chen, Sheng-Hui; Chan, Chia-Hua; Lee, Cheng-Chung; Chen, Chii -Chang; Su, Yan-Kuin

2009-01-01T23:59:59.000Z

295

Self-assembled TiO2-Graphene Hybrid Nanostructures for Enhanced...  

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

TiO2-Graphene Hybrid Nanostructures for Enhanced Li-ion Insertion . Self-assembled TiO2-Graphene Hybrid Nanostructures for Enhanced Li-ion Insertion . Abstract: We used anionic...

296

Development of Advanced Nanomanufacturing: 3D Integration and High Speed Directed Self-assembly  

E-Print Network (OSTI)

the self-assembly process of nanomaterials, such as single-walled carbon nanotubes (SWNTs). By introducing the surface functionalization, electric field and ultrasonic agitation into the process, we develop a rapid and robust approach for effective...

Li, Huifeng

2011-10-21T23:59:59.000Z

297

Fabrication and characterization of nanostructures from self-assembled block copolymers  

E-Print Network (OSTI)

Nanoscale magnetic dot arrays have attracted considerable interest, both for fundamental studies of micromagnetism and for possible applications in high-density magnetic data storage. Self-assembled block copolymers provide ...

Cheng, Joy, 1974-

2003-01-01T23:59:59.000Z

298

Temperature study of Zero Bias Features using self-assembling tunnel junctions  

E-Print Network (OSTI)

The significant reduction in the conductance of a tunneling system near zero bias voltage is termed the Zero Bias Feature (ZBF). A ³He cryostat has been modified to incorporate a Self-Assembling Tunnel Junction (SATJ), capable of performing...

Savitski, Stephen Ronald

2012-06-07T23:59:59.000Z

299

Mitigating Wear on Surfaces Utilizing Self-Assembled Wear Passivating Films  

E-Print Network (OSTI)

interfaces, yet the vast majority of past research has focused predominately on nanotribological studies of thin films on flat silicon substrates to model the behavior of these self-assembled wear-reducing coatings. New model surfaces have been manufactured...

Jones, Ryan Lane

2012-07-16T23:59:59.000Z

300

Molecular behavior of DNA origami in higher order self-assembly  

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

Molecular behavior of DNA origami in higher order self-assembly Authors: Li, Z., Liu, M., Wang, L., Nangreave, J., Yan, H., and Liu, Y. Title: Molecular behavior of DNA origami in...

Note: This page contains sample records for the topic "materials synthesis self-assembly" 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

Molecular Dynamics Study of Alkanethiolate Self-Assembled Monolayer coated Gold Nanoparticle  

Science Journals Connector (OSTI)

Through molecular simulations we have observed that the surface of gold nanoparticles become highly corrugated by the adsorption of alkanethiolate self- assembled monolayers (SAMs). Furthermore, as the temperature is increased, the SAMs dissolve into ...

B. Henz; M. Zachairah

2007-06-01T23:59:59.000Z

302

Self-Organized Translational Wheeling Motion in Stochastic Self-Assembling Modules  

E-Print Network (OSTI)

Self-organization is a phenomenon found in biomolecular self-assembly by which proteins are spontaneously driven to assemble and attain various functionalities. This study reports on self-organized behavior in which ...

Miyashita, Shuhei

303

self-assembly is the au-tonomous organization of components  

E-Print Network (OSTI)

Micromachined cylinders using » SU-8 photoresist (slightly hydro- phobic) SA mediated by hydrophobic Models,'' ``Towards Multi-Level Modeling of Self-Assembling Intelligent Micro-Systems,'' Proc

304

Applications of Self-assembly for Molecular Electronics, Plasmon Coupling, and Ion Sensing  

E-Print Network (OSTI)

phenomenon without recognition of its potential, and was not widely investigated. Early work was initiated by Kuhn, in which a layer of chlorosilane derivative was adsorbed onto the hydrophilic glass, and the name self-assembled monolayers (SAMs) has been...

Chan, Yang-Hsiang

2011-08-08T23:59:59.000Z

305

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

306

BE.442 Molecular Structure of Biological Materials, Fall 2005  

E-Print Network (OSTI)

Basic molecular structural principles of biological materials. Molecular structures of various materials of biological origin, including collagen, silk, bone, protein adhesives, GFP, self-assembling peptides. Molecular ...

Zhang, Shuguang, Dr.

307

Self-assembling functionalized single-walled carbon nanotubes  

E-Print Network (OSTI)

scale synthesis of carbon nanotubes." Nature, Vol.358, 220-Ropes of Metallic Carbon Nanotubes." Science, Vol.273(5274),of single- wall carbon nanotubes. Process, product, and

Gao, Yan

2011-01-01T23:59:59.000Z

308

Self-assembling functionalized single-walled carbon nanotubes  

E-Print Network (OSTI)

Single-walled carbon nanotubes Carbon nanotubes (CNTs) arescale synthesis of carbon nanotubes." Nature, Vol.358, 220-Ropes of Metallic Carbon Nanotubes." Science, Vol.273(5274),

Gao, Yan

2011-01-01T23:59:59.000Z

309

Self-Assembled Multi-Component Catenanes: The Effect of Multivalency and Cooperativity on Structure and Stability  

Science Journals Connector (OSTI)

Self-Assembled Multi-Component Catenanes: The Effect of Multivalency and Cooperativity on Structure and Stability ... Using dynamic combinatorial chemistry, mixtures of dipeptide monomers were combined to probe how the structural elements of a family of self-assembled [2]-catenanes affect their equilibrium stability versus competing non-catenated structures. ... The nanostructure is constructed through the self-assembly of the ?-helical building block excised from E. coli galactoside acetyltransferase (PDB code 1krr, chain A; residues 131-165). ...

Mee-Kyung Chung; Stephen J. Lee; Marcey L. Waters; Michel R. Gagné

2012-06-11T23:59:59.000Z

310

Salt-Mediated Self-Assembly of Metal Nanoshells into Monolithic Aerogel Frameworks  

Science Journals Connector (OSTI)

Salt-Mediated Self-Assembly of Metal Nanoshells into Monolithic Aerogel Frameworks ... For the salt-mediated self-assembly, concentrated colloidal sols of Au/Ag, Pt/Ag, and Pd/Ag nanoshells were prepared by using either a rotatory evaporation (RE) or centrifuge filtration (CF) technique. ... Once the volume reached the desired value (typically 5–16 mL), the resulting sol was filtered using a 0.22 ?m poly(vinylidene difluoride) (PVDF) membrane filter and transferred to a glass vial for gel-formation studies. ...

Kulugammana G. S. Ranmohotti; Xiaonan Gao; Indika U. Arachchige

2013-08-06T23:59:59.000Z

311

Role of reversibility in viral capsid growth: A paradigm for self-assembly  

E-Print Network (OSTI)

Self-assembly at submicroscopic scales is an important but little understood phenomenon. A prominent example is virus capsid growth, whose underlying behavior can be modeled using simple particles that assemble into polyhedral shells. Molecular dynamics simulation of shell formation in the presence of an atomistic solvent provides new insight into the self-assembly mechanism, notably that growth proceeds via a cascade of strongly reversible steps and, despite the large variety of possible intermediates, only a small fraction of highly bonded forms appear on the pathway.

D. C. Rapaport

2008-10-03T23:59:59.000Z

312

Gallium diffusion into self-assembled InAs quantum dots grown on indium phosphide substrates  

SciTech Connect

The photoluminescence spectrum of small self-assembled In(Ga)As quantum dots grown on InP substrates is composed of distinct spectral lines. These lines correspond to monolayer variations in the dots smallest dimension: their heights. We use this phenomenon in order to study the diffusion of gallium atoms into the self-assembled quantum dots. We demonstrate that substantial amounts of gallium atoms diffuse from a strained GaInP layer underneath the quantum dots into the quantum dots.

Raz, T.; Shuall, N.; Bahir, G.; Ritter, D.; Gershoni, D.; Chu, S.N.G. [Department of Electrical Engineering, Technion - Israel Institute of Technology, Technion City, Haifa 32000 (Israel); Physics Department and The Solid State Institute, Technion - Israel Institute of Technology, Technion City, Haifa 32000 (Israel); Multiplex, Inc., 5000 Hadley Rd., South Plainfield, New Jersey 07080 (United States)

2004-10-18T23:59:59.000Z

313

Self-assembly of magnetically interacting cubes by a turbulent fluid flow  

Science Journals Connector (OSTI)

Previous work has demonstrated that combining mechanical vibration with magnetic interactions can result in the self-assembly of complex structures, albeit at low yield. Here we introduce a system where the yield of self-assembled structures is quantitatively predicted by a theoretical analysis. Millimeter-sized magnetic blocks, designed to form chains as their minimal energy state, are placed in a turbulent fluid flow. The distribution of chain lengths that form is quantitatively consistent with predictions, showing that the chain length distribution coincides with that of monomers or polymers in a thermal bath, with the turbulence strength parametrizing the effective temperature.

Filip Ilievski; Madhav Mani; George M. Whitesides; Michael P. Brenner

2011-01-05T23:59:59.000Z

314

Engineered biomolecular interactions with inorganic materials : sequence, binding, and assembly  

E-Print Network (OSTI)

Nanobiotechnology aims to exploit biomolecular recognition and self-assembly capabilities for integrating advanced materials into medicine and electronics. In particular, peptides have exhibited the ability to specifically ...

Peelle, Beau R

2005-01-01T23:59:59.000Z

315

Synthesis of new energetic materials. Final report  

SciTech Connect

Work on the synthesis of new hydrocarbon fuel systems involved: (a) a study of the synthesis and acid-promoted rearrangement of PCU-derived pinacols; (b) synthesis of an HCTD-derived pinacol; (c) a study of the generation and trapping of a PCU-derived vinylidenecarbene; (d) synthesis of `homosecohexaprismane- 10,13-dione`; (e) synthesis and thermal rearrangement of pentacyclo6.5.0.0 (4,12).0(5,10).0 (9,13)trideca-2,6-diene; (f) a study of the acid and base promoted reararrangements of hexacyclo11.2.1.0 (2,12).0(5,10).0 (5,15).0(10,14)hexadeca- 6,8-diene-4,11-dione. The results of studies that were performed in collaboration with investigators in four external laboratories are described. In addition, two new syntheses of TNAZ were developed, both of which proceed by way of an intermediate 1-azabicyclo1.1.0butane. Finally, X-ray crystal structures have been determined for a variety of cage hydrocarbons.

Marchand, A.P.

1997-01-01T23:59:59.000Z

316

Self-assembled DNA Nanostructures and DNA Devices John Reif Harish Chandran Nikhil Gopalkrishnan Thomas LaBean  

E-Print Network (OSTI)

and current state of the emerging research area in the field of nanoscience that make use of synthetic DNA. They are constructed primarily of synthetic DNA. 1.2 Use of bottom-up self-assembly Construction of molecularSelf-assembled DNA Nanostructures and DNA Devices John Reif Harish Chandran Nikhil Gopalkrishnan

Reif, John H.

317

Self-Assembled Micro-Honeycomb Network of Single-Walled Carbon Nanotubes for Heterojunction Solar Cells  

E-Print Network (OSTI)

Self-Assembled Micro-Honeycomb Network of Single-Walled Carbon Nanotubes for Heterojunction Solar@photon.t.u-tokyo.ac.jp Keywords: Self-assembly, micro-honeycomb network, single-walled carbon nanotubes, heterojunction solar cell-assembled micro-honeycomb network (-HN) of SWNTs obtained by water or ethanol vapor treatment of as

Maruyama, Shigeo

318

Joining and Scission in the Self-Assembly of Nanotubes from DNATiles Axel Ekani-Nkodo,1,2  

E-Print Network (OSTI)

, with an energy barrier Esc 180kBT. DNA nanotubes are thus uniquely accessible equilibrium polymers that enableJoining and Scission in the Self-Assembly of Nanotubes from DNATiles Axel Ekani-Nkodo,1,2 Ashish observations of tile-based DNA self-assembly in solution using fluorescent nanotubes composed of a single tile

Fygenson, Deborah Kuchnir

319

In Vivo Self-Assembly of Stable Green Fluorescent Protein Fusion Particles and Their Uses in Enzyme Immobilization  

Science Journals Connector (OSTI)

...Engineering In Vivo Self-Assembly of Stable Green Fluorescent Protein Fusion Particles and...previously the in vivo self-assembly of green fluorescent protein (GFP) fusions into...the design and recombinant production of green fluorescent protein (GFP) particles were...

Mark Venning-Slater; David O. Hooks; Bernd H. A. Rehm

2014-03-07T23:59:59.000Z

320

Self-Assembly of Nanostructured, Complex, Multi-cation Films via Spontaneous Phase Separation and Strain-driven Ordering  

SciTech Connect

Spontaneous self-assembly of a multi-cation nanophase in another multi-cation matrix phase is a promising bottom-up approach to fabricate novel, nanocomposite structures for a range of applications. In an effort to understand the mechanisms for such self-assembly, we report on complimentary experimental and theoretical studies to first understand and then control or guide the self-assembly of insulating BaZrO3 (BZO) nanodots within REBa2Cu3O7- (RE=rare earth elements including Y, REBCO) superconducting films. It was determined that the strain field developed around BZO nanodots embedded in REBCO matrix is a key driving force dictating the self-assembly of BZO nanodots along REBCO c-axis. The size selection and spatial ordering of BZO self-assembly were simulated using thermodynamic and kinetic models. The BZO self-assembly was controllable by tuning the interphase strain field. REBCO superconducting films with BZO defects arrays self-assembled to align in both vertical (REBCO c-axis) and horizontal (REBCO ab-planes) directions, resulted in the maximized pinning and Jc performance for all field angles with smaller angular Jc anisotropy. The work has broad implications for fabrication of controlled self-assembled nanostructures for a range of applications via strain-tuning.

Goyal, Amit [ORNL; Wee, Sung Hun [ORNL; Stocks, George Malcolm [ORNL; Zuev, Yuri L [ORNL; More, Karren Leslie [ORNL; Meng, Jianyong [ORNL; Zhong, Jianxin [ORNL

2013-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "materials synthesis self-assembly" 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.
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to obtain the most current and comprehensive results.


321

Sol–gel synthesis of sodium and lithium based materials  

Science Journals Connector (OSTI)

Sodium and lithium cobaltates are important materials for thermoelectric and ... the sol–gel synthesis of sodium- and lithium-based materials by using acetate precursors. The produced Na2/3CoO2, Li(Ni1/3Mn1/3Co1/...

Sandra Hildebrandt; Andreas Eva…

2012-09-01T23:59:59.000Z

322

Application of the Self-Assembled Monolayer (SAM) Model to Dithiophosphate and Dithiocarbamate Engine Wear Inhibitors  

E-Print Network (OSTI)

Engine Wear Inhibitors Yanhua Zhou, Shaoyi Jiang,,| Tahir C¸ agin, Elaine S. Yamaguchi, Rawls Frazier] wear inhibitors bound to an oxidized iron surface, we found that the cohesive energy of the self-assembled monolayers (SAM) for DTP molecules with various organic R groups correlates with the wear inhibition observed

Ã?agin, Tahir

323

NT13 Wednesday Posters 3 Self-assembled micro-honeycomb network of single-walled  

E-Print Network (OSTI)

121 P139 NT13 Wednesday ­ Posters 3 P140 Self-assembled micro-honeycomb network of single-assembled micro- honeycomb network ( -HN) of SWNTs obtained by water or ethanol vapor treatment of as of micro-honeycomb network. A PCE beyond 10% is achieved in the dry state after dilute nitric acid

Maruyama, Shigeo

324

Redox Properties of Cytochrome c Adsorbed on Self-Assembled Monolayers: A Probe for Protein  

E-Print Network (OSTI)

Redox Properties of Cytochrome c Adsorbed on Self-Assembled Monolayers: A Probe for Protein Received May 21, 2002 The redox behavior of cytochrome c (cyt c) adsorbed to gold electrodes modified) groups and from an aromatic thiol (6). The redox potentials of cyt c adsorbed on SAMs of 1 and 5

Prentiss, Mara

325

How to calculate structure factors of self-assembling anisotropic particles  

E-Print Network (OSTI)

that the particle shape anisotropy exerts a crucial influence on the behaviour of the structure factors. 1How to calculate structure factors of self-assembling anisotropic particles Sofia Kantorovich,*abc Elena Pyanzina,a Cristiano De Micheleb and Francesco Sciortinob We put forward a theoretical approach

Sciortino, Francesco

326

DOI: 10.1002/adem.201400414 Self-Assembled Recyclable Hierarchical Bucky Aerogels**  

E-Print Network (OSTI)

DOI: 10.1002/adem.201400414 Self-Assembled Recyclable Hierarchical Bucky Aerogels** By Mehmet, and recyclable multi-wall carbon nanotube (MWCNT) based light weight (density aerogels (BAGs than the energy dissipated by commercial foams with similar densities. 1. Introduction Aerogels

Daraio, Chiara

327

Structural plasticity of a transmembrane peptide allows self-assembly into biologically active nanoparticles  

Science Journals Connector (OSTI)

...self-assembly. Cross-section of the nanoparticle is presented. Alpha-helical portion of the peptide is highlighted in blue. Autodesk 3ds Max software was used for the generation of the model. To explore the therapeutic potential of the CXCR4 TM peptide nanoparticles...

Sergey G. Tarasov; Vadim Gaponenko; O. M. Zack Howard; Yuhong Chen; Joost J. Oppenheim; Marzena A. Dyba; Sriram Subramaniam; Youngshim Lee; Christopher Michejda; Nadya I. Tarasova

2011-01-01T23:59:59.000Z

328

Electric-Field Assisted Growth and Self-Assembly of Intrinsic Silicon  

E-Print Network (OSTI)

Electric-Field Assisted Growth and Self-Assembly of Intrinsic Silicon Nanowires Ongi Englander 94720 Received January 18, 2005; Revised Manuscript Received February 8, 2005 ABSTRACT Electric are seen to respond to the presence of a localized DC electric field set up between adjacent MEMS

Lin, Liwei

329

Self-Assembly of CdTe Tetrapods into Network Monolayers at the Air/Water  

E-Print Network (OSTI)

Self-Assembly of CdTe Tetrapods into Network Monolayers at the Air/Water Interface Matthew D present a versatile method for cadmium telluride (CdTe) tetrapod syn- thesis by utilizing multiple Te the tetrapod shape. CdTe tetra- pods are a promising inorganic semicon- ductor for photovoltaic cells due

Lin, Zhiqun

330

Solid-State Electrochromic Devices via Ionic Self-Assembled Multilayers  

E-Print Network (OSTI)

Solid-State Electrochromic Devices via Ionic Self-Assembled Multilayers (ISAM) of a Polyviologena-Galva´n, Harry W. Gibson, James R. Heflin* Introduction Electrochromic (EC) devices undergo reversible absorbance/ transmittance change on application of external voltage.[1] Since the first major report on electrochromism

Heflin, Randy

331

Self-assembly of silicide quantum dot arrays on stepped silicon surfaces by reactive epitaxy  

E-Print Network (OSTI)

investigated on the epitaxy and self- organization of laterally nanostructured transition metal TM silicideSelf-assembly of silicide quantum dot arrays on stepped silicon surfaces by reactive epitaxy L to be a flexible and a convenient method for the preparation of dense arrays of Co silicide quantum dots

Ortega, Enrique

332

Optoelectronic Properties of Self-Assembled InAs/InGaAs Quantum SANJAY KRISHNA  

E-Print Network (OSTI)

CHAPTER 10 Optoelectronic Properties of Self-Assembled InAs/InGaAs Quantum Dots SANJAY KRISHNA that exists in zero-dimensional systems but also for their application in electronic and optoelectronic-speed- and opto-electronics". In particular, with the advent of optical fibers and the ever increasing need

Krishna, Sanjay

333

Self-assembly of ternary particles for tough colloidal crystals with vivid structure colors  

Science Journals Connector (OSTI)

Self-assembly of colloidal spheres is the most frequently used method for structural colors, but the chroma of the structural colors is usually so low that people cannot observe it under natural conditions. This paper presents a facile method for fabrications ...

Binfu Bao; Duo Liu; Youyou Yang; Zhehong Shen; Bo You

2013-01-01T23:59:59.000Z

334

The self-assembling zwitterionic form of L-phenyl­alanine at neutral pH  

Science Journals Connector (OSTI)

The zwitterion of L-phenyl­alanine was characterized using synchrotron X-rays. It crystallized in the monoclinic space group P21 with four mol­ecules in the asymmetric unit. The 0.62 ? resolution structure was obtained in the same configuration as that assumed to be adopted in the self-assembly of nanotubes.

Mossou, E.

2014-02-22T23:59:59.000Z

335

Self-assembly of triangular quantum dots on (111)A substrates by droplet epitaxy  

SciTech Connect

We report the self-assembly of triangular GaAs quantum dots (QDs) on (111)A substrates using droplet epitaxy. Shape transition from hexagonal to triangular QDs is observed with increasing crystallizing temperature. The mechanism of the morphological change is discussed in terms of different growth rates of step edges on a (111)A substrate.

Jo, M.; Mano, T.; Abbarchi, M.; Kuroda, T. [Advanced Photonics Materials Unit, National Institute for Materials Science, 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047 (Japan); Sakoda, K. [Advanced Photonics Materials Unit, National Institute for Materials Science, 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan and Graduate School of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8577 (Japan)

2014-05-15T23:59:59.000Z

336

Self-assembled collagen-like peptide fibers as templates for metallic Daniel Gottlieb,a  

E-Print Network (OSTI)

Self-assembled collagen-like peptide fibers as templates for metallic nanowires Daniel Gottlieb-terminus led to metal nanoparticle-decorated fibers. After electroless silver plating, these fibers were completely metallized, creating electrically conductive nanowires under mild conditions while leaving

Raines, Ronald T.

337

Photoinduced electron transfer from rail to rung within a self-assembled oligomeric porphyrin ladder  

SciTech Connect

Photoinduced electron transfer in a self-assembled supramolecular ladder structure comprising oligomeric porphyrin rails and ligated dipyridyltetrazine rungs was characterized by transient absorption spectroscopy and transient direct current photoconductivity to be mainly from an oligomer (rail) to the center of a terminal tetrazine (rung), with the remaining hole being delocalized on the oligomer and subsequent charge recombination in 0.19 ns.

She, Chunxing; Lee, Suk Joong; McGarrah, James E.; Vura-Weis, Josh; Wasielewski, Michael; Chen, Hanning; Schatz, George C.; Ratner, Mark A.; Hupp, Joseph T.

2010-01-01T23:59:59.000Z

338

Self-assembled, aptamer-tethered DNA nanotrains for targeted transport of molecular drugs  

E-Print Network (OSTI)

theranostics Guizhi Zhua,b,c , Jing Zhenga,b , Erqun Songb,d , Michael Donovana , Kejing Zhangb , Chen LiueNTrs a promising targeted drug transport platform for cancer theranostics. self-assembly | DNA nanomedicines). A theranostic (4) platform with targeted and efficient drug transport would solve these problems, and, by its

Tan, Weihong

339

Multimetallic Aerogels by Template-Free Self-Assembly of Au, Ag, Pt, and Pd Nanoparticles  

Science Journals Connector (OSTI)

aerogel; hydrogel; multimetallic; noble metal nanoparticles; alloying; porous metals; template-free; self-assembly ... Their potential areas of application lay in the field of heterogeneous and electro-catalysis, conductive coatings, optical absorbing layers, surface enhanced Raman spectroscopy, and hydrogen storage. ... We report on systematic studies of size-dependent alloy formation of silver-coated gold nanoparticles (NPs) in aq. ...

Anne-Kristin Herrmann; Petr Formanek; Lars Borchardt; Markus Klose; Lars Giebeler; Jürgen Eckert; Stefan Kaskel; Nikolai Gaponik; Alexander Eychmüller

2013-12-09T23:59:59.000Z

340

Understanding the Induced Self-Assembly System Between PEO-b-PAA and Iron  

E-Print Network (OSTI)

The induced self-assembly phenomenon between PEO-b-PAA and Fe(II) was investigated. It was revealed that the electrostatic interaction between Fe(II) in the form of green rust (GR²?) particles and the COO- groups from the ...

Sondjaja, H. Ronny

Note: This page contains sample records for the topic "materials synthesis self-assembly" 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

Circuit and System Architecture for DNA-Guided Self-Assembly of Nanoelectronics  

E-Print Network (OSTI)

Circuit and System Architecture for DNA-Guided Self-Assembly of Nanoelectronics Jaidev P research on several important topics including wire dominated designs, power dissipation, and fault tolerance. A revolutionary technology change, such as replacing CMOS, is a potentially disruptive event

Dwyer, Chris

342

Ternary Oil-Water-Amphiphile Systems: Self-Assembly and Phase Equilibria  

E-Print Network (OSTI)

Ternary Oil-Water-Amphiphile Systems: Self-Assembly and Phase Equilibria Seung-Yeon Kim surfactant - oil - water systems were studied by grand-canonical Monte Carlo simulations assisted H represents hydrophilic and T hydrophobic groups. In contrast to earlier studies, we studied oil

343

Bulk Materials Synthesis & Characterization, Condensed Matter Physics &  

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

Site Details Site Details EMSC Homepage Research Publications Collaborators Laboratory People Links of Interest Other Information Basic Energy Sciences Directorate Condensed Matter Physics & Materials Science Dept Oxide Molecular Beam Epitaxy Group BNL Site Index Can't View PDFs? Exploratory Materials Synthesis & Characterization The focus of our research is design, discovery, synthesis and characterization of new model materials for condensed matter physics. Particular emphasis is devoted to the discovery of new phenomena associated with correlated electron behavior and problems in superconductivity and magnetism. Since many observables are tensor quantities, significant effort is devoted to the synthesis of materials in single crystal form. New materials are prepared by variety of growth methods: conventional arc melting and powder metallurgical techniques, solution methods, high temperature intermetallic, oxide or sulfide flux as well as chemical vapor transport and deposition. Automated physical and structural characterization is the essential component of the lab. In order to optimize synthesis parameters, it is necessary to characterize structural and physical properties of materials. Quite often the same methods are used to probe and perturb crystal structure, transport, thermodynamic and magnetic properties of new materials at extreme conditions of low temperatures, high magnetic fields and high pressures.

344

Multi-step self-assembly route to three-dimensional block copolymer-semiconducting nanoparticle photonic arrays with structural hierarchy.  

E-Print Network (OSTI)

??A new multi-step self-assembly route to polymer-semiconducting nanoparticle photonic structures is described. The multi-step self-assembly strategy targets complex hierarchical structures in which organization of cadmium… (more)

Yusuf, Huda

2009-01-01T23:59:59.000Z

345

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

346

Self-Assembly of Spherical Particles on an Evaporating Sessile Droplet Michael Schnall-Levin, Eric Lauga, and Michael P. Brenner*  

E-Print Network (OSTI)

Self-Assembly of Spherical Particles on an Evaporating Sessile Droplet Michael Schnall-Levin, Eric for self-assembly is to design an energy landscape so that the desired outcome is the energy minimum.1 together. The extreme nonuniqueness of the self-assembly of three- dimensional particle clusters

Lauga, Eric

347

Self-Assembly of Gears at a Fluid/Air Interface Jessamine M. K. Ng, Michael J. Fuerstman, Bartosz A. Grzybowski,  

E-Print Network (OSTI)

Self-Assembly of Gears at a Fluid/Air Interface Jessamine M. K. Ng, Michael J. Fuerstman, Bartosz A that develops order only when dissipating energyscomprising millimeter to centimeter scale gears that self-assemble of self-assembly has expanded from molecules to functional devices.1-3 Most research in self

Prentiss, Mara

348

Modeling capsid self-assembly: design and analysis This article has been downloaded from IOPscience. Please scroll down to see the full text article.  

E-Print Network (OSTI)

Modeling capsid self-assembly: design and analysis This article has been downloaded from IOPscience capsid self-assembly: design and analysis D C Rapaport Department of Physics, Bar-Ilan University, Ramat of simulations aimed at elucidating the self-assembly dynamics of spherical virus capsids is described

Rapaport, Dennis C.

349

Self-assembly of patchy particles into polymer chains: A parameter-free comparison between Wertheim theory and Monte Carlo simulation  

E-Print Network (OSTI)

Self-assembly of patchy particles into polymer chains: A parameter-free comparison between Wertheim theory. This comparison offers a unique framework for the analytic prediction of the properties of self-assembling this basic form of self-assembly energy per particle, order parameter or average fraction of particles

Sciortino, Francesco

350

Aqueous self-assembly of SDS@2b-CD complexes: lamellae and vesicles Lingxiang Jiang, Yu Peng, Yun Yan and Jianbin Huang*  

E-Print Network (OSTI)

Aqueous self-assembly of SDS@2b-CD complexes: lamellae and vesicles Lingxiang Jiang, Yu Peng, Yun to be able to self-assemble into well-defined lamellar structures in concentrated aqueous solution membrane. Moreover, since the outer surface of SDS@2b-CD is hydrophilic, its self-assembly behavior, unlike

Huang, Jianbin

351

Self-Assembly and Selective Guest Binding of Three-Dimensional Open-Framework Solids from a Macrocyclic Complex as a Trifunctional Metal  

E-Print Network (OSTI)

Self-Assembly and Selective Guest Binding of Three-Dimensional Open- Framework Solids from by the one-pot template condensation re- action of amine and formaldehyde. From the self-assembly of 1-organic coordination networks having specific network topologies and potentially interesting prop- erties.[1±12] Self-assembly

Paik Suh, Myunghyun

352

Self-Assembly of Luminescent Molecular Squares Featuring Octahedral Rhenium Corners Robert V. Slone, Joseph T. Hupp,* Charlotte L. Stern, and Thomas E. Albrecht-Schmitt  

E-Print Network (OSTI)

Self-Assembly of Luminescent Molecular Squares Featuring Octahedral Rhenium Corners Robert V. Slone University, Evanston, Illinois 60208-3113 ReceiVed April 26, 1996 The self-assembly of rigid inorganic self-assembly which enables components to arrange themselves into square host cavities, chemists have

353

Robot Self-Assembly by Folding: A Printed Inchworm Robot Samuel M. Felton, Michael T. Tolley, Cagdas D. Onal, Daniela Rus, and Robert J. Wood  

E-Print Network (OSTI)

Robot Self-Assembly by Folding: A Printed Inchworm Robot Samuel M. Felton, Michael T. Tolley methods for prototyping complex machines. Self-assembly of the folding step would expand the possibilities- and nano-scale structures have been designed to self-assemble under uniform environmental cues due

Wood, Robert

354

NREL: Energy Storage - Battery Materials Synthesis  

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

power requirements and system integration demands of EDVs pose significant challenges to energy storage technologies. Making these materials durable enough that batteries last...

355

Synthesis and design of silicide intermetallic materials  

SciTech Connect

The overall objective of this program is to develop structural silicide-based materials with optimum combinations of elevated temperature strength/creep resistance, low temperature fracture toughness, and high temperature oxidation and corrosion resistance for applications of importance to the U.S. processing industry. A further objective is to develop silicide-based prototype industrial components. The ultimate aim of the program is to work with industry to transfer the structural silicide materials technology to the private sector in order to promote international competitiveness in the area of advanced high temperature materials and important applications in major energy-intensive U.S. processing industries.

Petrovic, J.J.; Castro, R.G.; Butt, D.P.; Park, Y.; Hollis, K.J.; Kung, H.H.

1998-11-01T23:59:59.000Z

356

Synthesis of thin films and materials utilizing a gaseous catalyst  

DOE Patents (OSTI)

A method for the fabrication of nanostructured semiconducting, photoconductive, photovoltaic, optoelectronic and electrical battery thin films and materials at low temperature, with no molecular template and no organic contaminants. High-quality metal oxide semiconductor, photovoltaic and optoelectronic materials can be fabricated with nanometer-scale dimensions and high dopant densities through the use of low-temperature biologically inspired synthesis routes, without the use of any biological or biochemical templates.

Morse, Daniel E; Schwenzer, Birgit; Gomm, John R; Roth, Kristian M; Heiken, Brandon; Brutchey, Richard

2013-10-29T23:59:59.000Z

357

Template Free Synthesis of LiV3O8 Nanorods as a Cathode Material...  

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

Template Free Synthesis of LiV3O8 Nanorods as a Cathode Material for High-Rate Secondary Lithium Batteries . Template Free Synthesis of LiV3O8 Nanorods as a Cathode Material for...

358

Volmer-Weber Growth of Nanoscale Self-Assembled Quantum Dots  

SciTech Connect

Our research has focused on the fundamental understanding of the physical mechanisms and experimental methodologies to probe various growth conditions, their effects on density, size uniformity, and spatial organization of self-assembled quantum dots (SAQDs). Theoretical models and numerical simulations have been developed to understand the nonlinear dynamics of surface pattern evolution and self assembly processes. Fabrication processes of semiconductor and metal SAQDs on high-k dielectrics have been developed, which have enabled the technology development of high-speed, low-power nonvolatile memory devices for nanoelectronics applications. Over the four years of the project, six graduate students have been trained in this research project, and four of them have graduated with PhD degrees. Our research has been reported in 11 journal articles. Both PIs and their students have given numerous presentations at national/international conferences as well as invited seminars. A list of publications and presentations is attached to the end of this report.

Huang, Rui

2009-08-15T23:59:59.000Z

359

Chapter 247 Self-Assembled Lanthanide Helicates: From Basic Thermodynamics to Applications  

Science Journals Connector (OSTI)

Publisher Summary This chapter focuses on the rich chemical adventure provided by the systematic exploitation of the 2, 6-disubstituted pyridine units for the self-assembly of lanthanide helicates. It aims at opening some perspectives for the design of polymetallic helicates containing at least one trivalent lanthanide, but combined with s-, p-, or d-block metal ions. The few examples of lanthanide or actinide helicates that are built from noncontaining pyridine binding units have been reported. In addition to ligand design and structural information, detailed thermodynamic aspects of the self-assembly processes are reviewed, as well as the relationship between the helicate structure and their photophysical properties. Moreover, it describes practical applications of luminescent binuclear helicates in bioanalyses with emphasis on live cell staining and DNA analysis.

Claude Piguet; Jean-Claude G. Bünzli

2010-01-01T23:59:59.000Z

360

Molecular self-assembly of nylon-12 nanorods cylindrically confined to nanoporous alumina  

Science Journals Connector (OSTI)

It has been revealed that in cylindrical nano-confinement, the hydrogen-bonding direction of nylon-12 crystals in the rod could self-assemble to be parallel to the long axis of the rod. The dominant growth direction and hydrogen-bonding direction of the -form crystal in the long axis of the rod has been revealed by TEM-SAED and WAXD.

Cao, Y.

2014-10-21T23:59:59.000Z

Note: This page contains sample records for the topic "materials synthesis self-assembly" 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
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361

Microtubule Patterning and Manipulation Using Electrophoresis and Self-Assembled Monolayers  

E-Print Network (OSTI)

-ethylmaleimide PEG poly(ethylene glycol) PIPES piperazine-N,N?-bis(2-ethanesulfonic acid) PMMA poly(methyl methacrylate) SAM self-assembled monolayer XPS x-ray photoelectron spectroscopy 1 CHAPTER I INTRODUCTION 1.1 Overview This project was initiated... from EMD Chemicals. Polymethylmethacrylate (PMMA, MW 950K) was obtained from Brewer Scientific. Methylisobutylketone (MIBK, ACS grade) was obtained from Fisher Scientific. No.1 borosilicate glass coverslips (22 X 50 mm) were purchased from VWR...

Noel, John

2010-07-14T23:59:59.000Z

362

Quantum Tunneling Enabled Self-Assembly of Hydrogen Atoms on Cu(111)  

SciTech Connect

Atomic and molecular self-assembly are key phenomena that underpin many important technologies. Typically, thermally enabled diffusion allows a system to sample many areas of configurational space, and ordered assemblies evolve that optimize interactions between species. Herein we describe a system in which the diffusion is quantum tunneling in nature and report the self-assembly of H atoms on a Cu(111) surface into complex arrays based on local clustering followed by larger scale islanding of these clusters. By scanning tunneling microscope tip-induced scrambling of H atom assemblies, we are able to watch the atomic scale details of H atom self-assembly in real time. The ordered arrangements we observe are complex and very different from those formed by H on other metals that occur in much simpler geometries. We contrast the diffusion and assembly of H with D, which has a much slower tunneling rate and is not able to form the large islands observed with H over equivalent time scales. Using density functional theory, we examine the interaction of H atoms on Cu(111) by calculating the differential binding energy as a function of H coverage. At the temperature of the experiments (5 K), H(D) diffusion by quantum tunneling dominates. The quantum-tunneling-enabled H and D diffusion is studied using a semiclassically corrected transition state theory coupled with density functional theory. This system constitutes the first example of quantum-tunneling-enabled self-assembly, while simultaneously demonstrating the complex ordering of H on Cu(111), a catalytically relevant surface.

Jewell, April D.; Peng, Guowen; Mattera, Michael F.; Lewis, Emily A.; Murphy, Colin J.; Kyriakou, Georgios; Mavrikakis, Manos; Sykes, E. Charles H.

2012-11-27T23:59:59.000Z

363

Theoretical description of a DNA-linked nanoparticle self-assembly  

E-Print Network (OSTI)

Nanoparticles tethered with DNA strands are promising building blocks for bottom-up nanotechnology, and a theoretical understanding is important for future development. Here we build on approaches developed in polymer physics to provide theoretical descriptions for the equilibrium clustering and dynamics, as well as the self-assembly kinetics of DNA-linked nanoparticles. Striking agreement is observed between the theory and molecular modeling of DNA tethered nanoparticles.

Chia Wei Hsu; Francesco Sciortino; Francis W. Starr

2010-07-06T23:59:59.000Z

364

Self-Assembled Nanostructured Photoanodes with Staggered Bandgap for Efficient Solar Energy Conversion  

Science Journals Connector (OSTI)

Self-Assembled Nanostructured Photoanodes with Staggered Bandgap for Efficient Solar Energy Conversion ... X-ray photoelectron spectroscopy (XPS) and diffuse reflectance measurements confirm the staggered band-alignment between Ta2O5 and WO3, which facilitates the separation of charge carriers. ... The TA measurements showed the elimination of trap states upon annealing Ta–W–O nanotubes and, hence, minimizing the charge carrier trapping, whereas the trap states remain in pristine Ta2O5 nanotubes even after annealing. ...

Ramy Nashed; Paul Szymanski; Mostafa A. El-Sayed; Nageh K. Allam

2014-04-14T23:59:59.000Z

365

Compositional Mapping of Self-Assembled Monolayers Derivatized within Microfluidic Networks  

Science Journals Connector (OSTI)

Carboxylic acid terminated self-assembled monolayers (SAMs) deposited on epitaxial gold substrates were activated in situ using a water-soluble carbodiimide and N-hydroxysuccinimide reagents. ... 20,32 The master template was available in our laboratory having been previously manufactured by exposing and developing a photoresist pattern on a gallium arsenide wafer. ... Images were obtained in lateral force and pulsed force modes using Topometrix silicon nitride (Si3N4) tips in air. ...

Steven J. Hinder; Simon D. Connell; Martyn C. Davies; Clive J. Roberts; Saul J. B. Tendler; Philip M. Williams

2002-03-19T23:59:59.000Z

366

Control of Self-Assembling Processes of Polyamidoamine Dendrimers and Pd Nanoparticles  

Science Journals Connector (OSTI)

Control of Self-Assembling Processes of Polyamidoamine Dendrimers and Pd Nanoparticles ... Note that GN and Z are interrelated under the fixed conditions of r and [Pd(OAc)2] as described above. ... However, we must note that such a superstructure may be formed during the solvent evaporation process of the specimens for TEM observations, because the process causes a change in template concentration and an aggregation of the templates driven by surface tension. ...

Hirokazu Tanaka; Takeji Hashimoto; Satoshi Koizumi; Hideaki Itoh; Kensuke Naka; Yoshiki Chujo

2008-02-12T23:59:59.000Z

367

Non-additive simple potentials for pre-programmed self-assembly  

E-Print Network (OSTI)

A major goal in nanoscience and nanotechnology is the self-assembly of any desired complex structure with a system of particles interacting through simple potentials. To achieve this objective, intense experimental and theoretical efforts are currently concentrated in the development of the so called "patchy" particles. Here we follow a completely different approach and introduce a very accessible model to produce a large variety of pre-programmed two-dimensional (2D) complex structures. Our model consists of a binary mixture of particles that interact through isotropic in plane interactions that is able to self-assemble into targeted lattices by the appropriate choice of a small number of geometrical parameters and interaction strengths. We study the system using Monte Carlo computer simulations and, despite its simplicity, we are able to self assemble potentially useful structures such as chains, stripes, Kagome, twisted Kagome, honeycomb, square, Archimedean and quasicrystaline tilings. Our model is designed such that it may be imediately implemented in experiments using existing techniques to build particles with different shapes and interactions. Thus, it represents a promising strategy for bottom-up nano-fabrication.

Daniel Salgado-Blanco; Carlos I. Mendoza

2014-09-09T23:59:59.000Z

368

Numerical evidence for nucleated self-assembly of DNA brick structures  

E-Print Network (OSTI)

The observation by Ke et al. [Science 338, 1177 (2012)] that large numbers of short, pre-designed DNA strands can assemble into three-dimensional target structures came as a great surprise, as no colloidal self-assembling system has ever achieved the same degree of complexity. That failure seemed easy to rationalise: the larger the number of distinct building blocks, the higher the expected error rate for self-assembly. The experiments of Ke et al. have disproved this argument. Here, we report Monte Carlo simulations of the self-assembly of a DNA brick cube, comprising approximately 1000 types of DNA strand, using a simple model. We model the DNA strands as lattice tetrahedra with attractive patches, the interaction strengths of which are computed using a standard thermodynamic model. We find that, within a narrow temperature window, the target structure assembles with high probability. Our simulations suggest that mis-assembly is disfavoured because of a slow nucleation step. As our model incorporates no aspect of DNA other than its binding properties, these simulations suggest that, with proper design of the building blocks, other systems, such as colloids, may also assemble into truly complex structures.

Aleks Reinhardt; Daan Frenkel

2014-04-25T23:59:59.000Z

369

Synthesis of materials with infrared and ultraviolet lasers  

SciTech Connect

This paper discusses three divergent examples of synthesis of materials with lasers. The three techniques are: (1) infrared (CO/sub 2/) laser synthesis of silane (SiH/sub 4/) from disilane (Si/sub 2/H/sub 6/); (2) excimer (ArF) laser production of fine silicon powders from methyl- and chloro-substituted silanes; and, (3) excimer (KrF) laser production of fine metallic powders by laser ablation. The mechanism for each process is discussed along with some conclusions about the features of the laser radiation that enable each application. 19 refs., 12 figs., 2 tabs.

Lyman, J.L.

1988-01-01T23:59:59.000Z

370

Synthesis of highly ordered mesoporous silica materials using sodium silicate and amphiphilic block copolymers  

E-Print Network (OSTI)

Synthesis of highly ordered mesoporous silica materials using sodium silicate and amphiphilic block. Pinnavaia and coworkers6 have reported the synthesis of MSU-X mesoporous materials with several non- ionic and cowork- ers7 have reported the synthesis of SBA mesoporous silica materials, which have well

Kim, Ji Man

371

2014 APS/CNM/EMC Users Meeting Jamming Transition in Quasi-2D Self-Assembled Nanoparticle Monolayers  

E-Print Network (OSTI)

-Assembled Nanoparticle Monolayers Leandra S. Boucheron1, Jacob T. Stanley1, Yeling Dai1,4, Sean of iron oxide nanoparticle thin films self- assembled at the liquid-air interface

Kemner, Ken

372

Controlled release of paclitaxel from a self-assembling peptide hydrogel formed in situ and antitumor study in vitro  

E-Print Network (OSTI)

Background: A nanoscale injectable in situ-forming hydrogel drug delivery system was developed in this study. The system was based on a self-assembling peptide RADA16 solution, which can spontaneously form a hydrogel rapidly ...

Liu, Jingping

373

Synthesis, processing and properties of materials for SOFCs  

SciTech Connect

The synthesis and processing methods of complex oxide materials can significantly influence use in solid oxide fuel cells (SOFCs). This paper discusses (1) effects of powder synthesis and conditioning on fabrication, i.e., sintering, where close, reproducible control of composition and structure are required, and (2) influences on electrical, mechanical, structural and electrochemical properties that can influence SOFC performance. Examples are given for chromites, manganites and related oxides used as interconnections and electrodes in SOFCs. Materials, from source to incorporation into the fuel cell and generator, is a major issue in the development of solid oxide fuel cells (SOFCs). An integral part of this is the synthesis from chemicals and other virgin materials, generally as an oxide or metal powder, which can become a SOFC component. In some instances, such as with electrochemical vapor deposition, the component is formed directly from the chemicals. The synthesized materials are then conditioned and processes prior to fabrication into the fuel cell component, either separately or in conjunction with other material components.

Bates, J.L.; Armstrong, T.A.; Kingsley, J.J.; Pederson, L.R.

1994-03-01T23:59:59.000Z

374

Self-Assembled Multi-Component Catenanes: Structural Insights into an Adaptable Class of Molecular Receptors and [2]-Catenanes  

Science Journals Connector (OSTI)

Self-Assembled Multi-Component Catenanes: Structural Insights into an Adaptable Class of Molecular Receptors and [2]-Catenanes ... The self-assembly of complex structures from simple building blocks is a general principle that can lead to significant gains in structure and function. ... The family of catenanes can be described as flower-like with a compact core where the aryl of the arylglycine is pinched between two loops of the saddle-shaped tetrameric ring (Figure 1). ...

Mee-Kyung Chung; Peter S. White; Stephen J. Lee; Marcey L. Waters; Michel R. Gagné

2012-06-11T23:59:59.000Z

375

Interfacial Properties and Design of Functional Energy Materials  

SciTech Connect

The vital importance of energy to society continues to demand a relentless pursuit of energy responsive materials that can bridge fundamental chemical structures at the molecular level and achieve improved functionality, such as efficient energy conversion/storage/transmission, over multiple length scales. This demand can potentially be realized by harnessing the power of self-assembly a spontaneous process where molecules or much larger entities form ordered aggregates as a consequence of predominately non-covalent (weak) interactions. Self-assembly is the key to bottom-up design of molecular devices, because the nearly atomic-level control is very difficult to realize in a top-down, e.g., lithographic approach. However, while function (e.g., charge mobility) in simple systems such as single crystals can often be predicted, predicting the function of the great variety of self-assembled molecular architectures is complicated by the lack of understanding and control over nanoscale interactions, mesoscale architectures, and macroscale (long-range) order. To establish a foundation toward delivering practical solutions, it is critical to develop an understanding of the chemical and physical mechanisms responsible for the self-assembly of molecular and hybrid materials on various substrates. Typically molecular self-assembly involves poorly understood non-covalent intermolecular and substrate-molecule interactions compounded by local and/or collective influences from the substrate atomic lattice (symmetry and/or topological features) and electronic structure. Thus, progress towards unraveling the underlying physicochemical processes that control the structure and macroscopic physical, mechanical, electrical, and transport properties of materials increasingly requires tight integration of theory, modeling and simulation with precision synthesis, advanced experimental characterization, and device measurements. In this mode, theory and simulation can greatly accelerate the process of materials discovery by providing atomic level understanding of physicochemical phenomena and for making predictions of trends. In particular, this approach can provide understanding, prediction and exploration of new materials and conditions before they are realized in the lab, to illuminate connections between experimental observations, and help identify new materials for targeted synthesis. Toward this end, Density Functional Theory (DFT) can provide a suitable computational framework for investigating the inter- and intramolecular bonding, molecular conformation, charge and spin configurations that are intrinsic to self-assembly of molecules on substrates. This Account highlights recent advances in using an integrated approach based on DFT and scanning probe microscopy [STM(s), AFM] to study/develop electronic materials formed from the self-assembly of molecules into supramolecular or polymeric architectures on substrates. Here it is the interplay between molecular interactions and surface electrons that is used to control the final architecture and subsequent bulk properties of the two-dimensional patterns/assemblies. Indeed a rich variety of functional energy materials become possible.

Sumpter, Bobby G [ORNL] [ORNL; Liang, Liangbo [ORNL] [ORNL; Nicolai, Adrien [Rensselaer Polytechnic Institute (RPI)] [Rensselaer Polytechnic Institute (RPI); Meunier, V. [Rensselaer Polytechnic Institute (RPI)] [Rensselaer Polytechnic Institute (RPI)

2014-01-01T23:59:59.000Z

376

Lower pressure synthesis of diamond material  

DOE Patents (OSTI)

Methods of synthesizing a diamond material, particularly nanocrystalline diamond, diamond-like carbon and bucky diamond are provided. In particular embodiments, a composition including a carbon source, such as coal, is subjected to addition of energy, such as high energy reactive milling, producing a milling product enriched in hydrogenated tetrahedral amorphous diamond-like carbon compared to the coal. A milling product is treated with heat, acid and/or base to produce nanocrystalline diamond and/or crystalline diamond-like carbon. Energy is added to produced crystalline diamond-like carbon in particular embodiments to produce bucky diamonds.

Lueking, Angela (State College, PA); Gutierrez, Humberto (State College, PA); Narayanan, Deepa (Redmond, WA); Burgess Clifford, Caroline E. (State College, PA); Jain, Puja (King Of Prussia, PA)

2010-07-13T23:59:59.000Z

377

Research Areas - Argonne National Laboratories, Materials Sicence Division  

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

http://www.msd.anl.gov http://www.msd.anl.gov 2014-01-12T01:06:27+00:00 Joomla! 1.6 - Open Source Content Management Dynamics of Active Self-Assemble Materials 2011-05-13T17:17:28+00:00 2011-05-13T17:17:28+00:00 http://www.msd.anl.gov/research-areas/dynamics-of-active-self-assemble-materials Ken Krajniak krajniak@anl.gov Self-assembly, a natural tendency of simple building blocks to organize into complex architectures is a unique opportunity for materials science. In-depth understanding of self-assembly paves the way for design of tailored smart materials for emerging energy technologies. However, self-assembled materials pose a formidable challenge: they are intrinsically complex, with an often hierarchical organization occurring on many nested length and time scales. This program

378

Grained composite materials prepared by combustion synthesis under mechanical pressure  

DOE Patents (OSTI)

Dense, finely grained composite materials comprising one or more ceramic phase or phase and one or more metallic and/or intermetallic phase or phases are produced by combustion synthesis. Spherical ceramic grains are homogeneously dispersed within the matrix. Methods are provided, which include the step of applying mechanical pressure during or immediately after ignition, by which the microstructures in the resulting composites can be controllably selected.

Dunmead, Stephen D. (Davis, CA); Holt, Joseph B. (San Jose, CA); Kingman, Donald D. (Danville, CA); Munir, Zuhair A. (Davis, CA)

1990-01-01T23:59:59.000Z

379

Self-Assembled DNA Crystals: The Impact on Resolution of 5?-Phosphates and the DNA Source  

Science Journals Connector (OSTI)

Self-assembled 3D DNA crystals; crystal resolution; phosphorylated DNA; natural and synthetic DNA; X-ray diffraction; designed crystals ... During the last two decades, we have found two instances where synthetic DNA did not produce the results expected from it, when used as an enzymatic substrate; by contrast, DNA generated by the polymerase chain reaction (PCR) was an effective substrate. ... One example was the low level at which a synthetic DNA molecule was transcribed by T7 RNA polymerase to produce an RNA knot;(6, 7) the other instance was the incomplete restriction of a DNA graph assembled from synthetic branched junctions. ...

Ruojie Sha; Jens J. Birktoft; Nam Nguyen; Arun Richard Chandrasekaran; Jianping Zheng; Xinshuai Zhao; Chengde Mao; Nadrian C. Seeman

2013-01-16T23:59:59.000Z

380

Water purification by functionalised self-assembled monolayers on silica particles  

Science Journals Connector (OSTI)

This study focuses on a novel method to remove bio molecules and pathogens of different nature, such as proteins, viruses and oocysts, from water by silica particles coated with functionalised self-assembled monolayers. The results clearly show that organic species can efficiently be removed at pH ranges of drinking water by stirring the coated particles in the contaminated water for up to 60 min and finally filtering the powder. The removal is believed to be caused by electrostatic attraction and immobilisation of pathogens on the surface of the particles. At higher pH values above about 8, even chemisorption may occur.

Peter J. Majewski; Chiu Ping Chan

2008-01-01T23:59:59.000Z

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381

From Self-Assembly to Controlled-Assembly, From Optical Manipulation to AFM Manipulation  

E-Print Network (OSTI)

Moving nanoparticles/atoms to study the nearfield interaction between them is one of the many approaches to explore the optical and electrical properties of these assemblies. Traditional approach included the self assembly by spinning or drying nanoparticles in aqua on the substrate is well practiced. Lithography technique is another popular approach to deposit limited nano/micro patterns on substrates. Later optical and mechanical manipulations were used to have more control over moving individual elements of nano and microstructures and even atoms. Optical tweezers, optical trapping and AFM manipulation are examples of these precise approaches.

Shafiei, Farbod

2015-01-01T23:59:59.000Z

382

Self-Assembly of Molecular Brick Wall and Molecular Honeycomb from Nickel(II) Macrocycle and 1,3,5-Benzenetricarboxylate  

E-Print Network (OSTI)

Self-Assembly of Molecular Brick Wall and Molecular Honeycomb from Nickel(II) Macrocycle and 130N6O2)]3[C6H3(COO)3]2,14H2O,2C5H5N (2), respec- tively, have been constructed by the self-assembly anti-ferromagnetic interactions between the S ) 1 Ni(II) paramagnetic centers. Introduction Self-assembled

Paik Suh, Myunghyun

383

Synthesis and Properties of Novel Cationic, Temperature-Sensitive Block-Copolymers  

E-Print Network (OSTI)

Facile, one-step synthesis of self-assembling, cationic block copolymers of poly(2-N-(dimethylaminoethyl) methacrylate) (pDMAEMA) and PEO-PPO-PEO (Pluronic®) is developed. The copolymers are obtained via free-radical ...

Deshmukh, Smeet

384

Self assembled nano-structures of Pb on Si(111) studied by SPA-LEED: Quantum Size Effect driven Pb islands and the "Devil's Staircase".  

E-Print Network (OSTI)

??An important goal in present day surface science is to grow uniform sized self-assembled nanostructures. One system which has displayed a number of interesting surface… (more)

Yakes, Michael Keith

2006-01-01T23:59:59.000Z

385

Chemical Functionalization, Self-Assembly, and Applications of Nanomaterials and Nanocomposites  

SciTech Connect

This special issue addresses the research studies on chemical functionalization, self-assembly, and applications of nanomaterials and nanocomposites. It contains twentyfour articles including two reviews and twenty-two research articles. It is used to create new functional nanomaterials and nanocomposites with a variety of sizes and morphologies such as Zn/Al layered double hydroxide, tin oxide nanowires, FeOOH-modified anion resin, Au nanoclusters silica composite nanospheres, Ti-doped ZnO sol-composite films, TiO2/ZnO composite, graphene oxide nanocomposites, LiFePO4/C nanocomposites, and chitosan nanoparticles. These nanomaterials and nanocomposites have widespread applications in tissue engineering, antitumor, sensors, photoluminescence, electrochemical, and catalytic properties. In addition, this themed issue includes some research articles about self-assembly systems covering organogels and Langmuir films. Furthermore, B. Blasiak et al. performed a literature survey on the recent advances in production, functionalization, toxicity reduction, and application of nanoparticles in cancer diagnosis, treatment, and treatment monitoring. P. Colson et al. performed a literature survey on the recent advances in nanosphere lithography due to its compatibility with wafer-scale processes as well as its potential to manufacture a wide variety of homogeneous one-, two-, or three-dimensional nanostructures.

Jiao, Tifeng [Yanshan University; Yan, Xingbin [Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences; Balan, Lavinia [French National Centre for Scientific Research (CNRS), Institute of Materials Science of Mulhouse (IS2M), France; Stepanov, Andrey [Russian Academy of Sciences (RAS), Kazan Physical-Technical Institute, Russia; Chen, Xinqing [Hong Kong University of Science and Technology, Hong Kong; Hu, Michael Z. [ORNL

2014-01-01T23:59:59.000Z

386

The self-assembly of particles with isotropic interactions: Using DNA coated colloids to create designer nanomaterials  

SciTech Connect

Self-consistent field theory equations are presented that are suitable for use as a coarse-grained model for DNA coated colloids, polymer-grafted nanoparticles and other systems with approximately isotropic interactions. The equations are generalized for arbitrary numbers of chemically distinct colloids. The advantages and limitations of such a coarse-grained approach for DNA coated colloids are discussed, as are similarities with block copolymer self-assembly. In particular, preliminary results for three species self-assembly are presented that parallel results from a two dimensional ABC triblock copolymer phase. The possibility of incorporating crystallization, dynamics, inverse statistical mechanics and multiscale modelling techniques are discussed.

Thompson, R. B.; Dion, S.; Konigslow, K. von [Department of Physics and Astronomy and Waterloo Institute for Nanotechnology, University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L 3G1 (Canada)

2014-03-31T23:59:59.000Z

387

Near-Infrared Electrochromic and Chiroptical Switching Materials: Design, Synthesis, and Characterization of Chiral Organogels  

E-Print Network (OSTI)

Near-Infrared Electrochromic and Chiroptical Switching Materials: Design, Synthesis regions have been realized using a low molecular weight gel as a chiral scaffold and electrochromic

Wan, Xin-hua

388

Shock-induced synthesis of high temperature superconducting materials  

DOE Patents (OSTI)

It has now been determined that the unique features of the high pressure shock method, especially the shock-induced chemical synthesis technique, are fully applicable to high temperature superconducting materials. Extraordinarily high yields are achievable in accordance with this invention, e.g., generally in the range from about 20% to about 99%, often in the range from about 50% to about 90%, lower and higher yields, of course, also being possible. The method of this invention involves the application of a controlled high pressure shock compression pulse which can be produced in any conventional manner, e.g., by detonation of a high explosive material, the impact of a high speed projectile or the effect of intense pulsed radiation sources such as lasers or electron beams. Examples and a discussion are presented.

Ginley, D.S.; Graham, R.A.; Morosin, B.; Venturini, E.L.

1987-06-18T23:59:59.000Z

389

Synthesis of lithium intercalation materials for rechargeable battery  

Science Journals Connector (OSTI)

Lithium-based oxides (LiMOx, where M=Ni, Co, Mn) are attractive for electrode materials, because they are capable of reversibly intercalating lithium ions for rechargeable battery without altering the main unit. We developed a novel solution-based route for the synthesis of these lithium intercalation oxides, using acetates or oxides as precursors for lithium, manganese, nickel, and cobalt, respectively with proper organic solvents. The evolution of crystal structure of these materials was analyzed by X-ray diffraction. Further analysis of LiMn2O4 samples were carried out using impedance spectroscopy and Raman spectroscopy. These studies indicate that this synthetic route, without using expensive alkoxides of sol–gel process, produces high-quality lithium-based oxides useful for cathode in lithium-ion rechargeable battery.

S. Nieto-Ramos; M.S. Tomar

2001-01-01T23:59:59.000Z

390

EDTA-Induced Self-Assembly of 3D Graphene and Its Superior Adsorption Ability for Paraquat Using a Teabag  

Science Journals Connector (OSTI)

In the past two years, three-dimensional graphene (3DG) was introduced to the environmental treatment area as a promising new material. Despite much progress in its synthesis and applications, 3DG is still limited in terms of green large-scale synthesis ...

Yang Huang; Chaoran Li; Zhang Lin

2014-10-31T23:59:59.000Z

391

Reversible Self-Assembly of Entrapped Fluorescent Gelators in Polymerized Styrene Gel Matrix: Erasable Thermal Imaging via Recreation of Supramolecular Architectures  

Science Journals Connector (OSTI)

Reversible Self-Assembly of Entrapped Fluorescent Gelators in Polymerized Styrene Gel Matrix: Erasable Thermal Imaging via Recreation of Supramolecular Architectures ... A solvent-vapor-controlled recreation of the self-assembly of a fluorescent organogelator within a polymer matrix and its application in erasable secret documentation has not been reported previously. ...

Sampath Srinivasan; Palathingal A. Babu; Sankarapillai Mahesh; Ayyappanpillai Ajayaghosh

2009-10-01T23:59:59.000Z

392

Facilitated Substrate Channeling in a SelfAssembled Trifunctional Enzyme Complex  

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

202441 202441 Facilitated Substrate Channeling in a Self-Assembled Trifunctional Enzyme Complex** Chun You, Suwan Myung, and Y.-H. Percival Zhang* Most cascade enzymes in metabolic pathways are spatially held together by noncovalent protein-protein interactions. [1] The formation of a cascade enzyme complex often allows the product of one enzyme to be transferred to an adjacent enzyme where it acts as the substrate, thereby resulting in an enhanced reaction rate, because reaching equilibrium in the cytoplasm is not required; this mechanism is called substrate channeling. [1, 2] In nature, most intracellular enzyme com- plexes are dynamic so that they may be dissociated or associated, thereby resulting in forestallment of substrate competition among different pathways, regulation of meta- bolic fluxes, mitigation of metabolite inhibition, and circum- vention of unfavorable

393

Final LDRD report : infrared detection and power generation using self-assembled quantum dots.  

SciTech Connect

Alternative solutions are desired for mid-wavelength and long-wavelength infrared radiation detection and imaging arrays. We have investigated quantum dot infrared photodetectors (QDIPs) as a possible solution for long-wavelength infrared (8 to 12 {mu}m) radiation sensing. This document provides a summary for work done under the LDRD 'Infrared Detection and Power Generation Using Self-Assembled Quantum Dots'. Under this LDRD, we have developed QDIP sensors and made efforts to improve these devices. While the sensors fabricated show good responsivity at 80 K, their detectivity is limited by high noise current. Following efforts concentrated on how to reduce or eliminate this problem, but with no clear path was identified to the desired performance improvements.

Cederberg, Jeffrey George; Ellis, Robert; Shaner, Eric Arthur

2008-02-01T23:59:59.000Z

394

Effects of self-assembled monolayer and PFPE lubricant on wear characteristics of flat silicon tips.  

SciTech Connect

The effects of self-assembled monolayer (SAM) and perfluoropolyether (PFPE) lubricant on the wear characteristics of flat silicon tips were investigated. The wear test consisted of sliding the silicon tips fabricated on a flat silicon specimen against SAM and PFPE (Z-tetraol) coated silicon (100) wafer. The tips were slid at a low speed for about 15 km under an applied load of 39.2 {micro}N. The wear volume of the tip was obtained by measuring the tip profile using an Atomic Force Microscope (AFM). It was found that the coatings were effective in reducing the wear of the tips by an order of magnitude from 10{sup -6} to 10{sup -7}.

Kim, H. J.; Jang, C. E.; Kim, D. E.; Kim, Y. K.; Choa, S. H.; Hong, S.; Materials Science Division; Yonsei Univ.; Samsung Adv. Inst. Science and Technology; Seoul National Univ. of Technology

2009-01-01T23:59:59.000Z

395

ELEMENTARY APPROACH TO SELF-ASSEMBLY AND ELASTIC PROPERTIES OF RANDOM COPOLYMERS  

SciTech Connect

The authors have mapped the physics of a system of random copolymers onto a time-dependent density functional-type field theory using techniques of functional integration. Time in the theory is merely a label for the location of a given monomer along the extent of a flexible chain. We derive heuristically within this approach a non-local constraint which prevents segments on chains in the system from straying too far from each other, and leads to self-assembly. The structure factor is then computed in a straightforward fashion. The long wave-length limit of the structure factor is used to obtain the elastic modulus of the network. It is shown that there is a surprising competition between the degree of micro-phase separation and the elastic moduli of the system.

S. M. CHITANVIS

2000-10-01T23:59:59.000Z

396

Diffusional Nucleation of Nanocrystals and Their Self-Assembly into Uniform Colloids  

E-Print Network (OSTI)

We review theoretical explanation of mechanisms of control of uniformity in growth of nanosize particles and colloids. The nanoparticles are synthesized as nanocrystals, by burst nucleation from solution. The colloids are self-assembled by aggregation of these nanocrystals. The two kinetic processes are coupled, and both are driven by diffusional transport. The interrelation of the two processes allows for formation of narrow-size-distribution colloid dispersions which are of importance in many applications. We review a mathematical model of cluster growth by capture of diffusing "singlets." Burst nucleation of nanoparticles in solution is then analyzed. Finally, we couple it to the secondary process of aggregation of nanoparticles to form colloids. We address aspects of modeling of particle size distribution, as well as other properties.

Vladimir Privman

2008-06-30T23:59:59.000Z

397

Controlled self-assembly of multiferroic core-shell nanoparticles exhibiting strong magneto-electric effects  

SciTech Connect

Ferromagnetic-ferroelectric composites show strain mediated coupling between the magnetic and electric sub-systems due to magnetostriction and piezoelectric effects associated with the ferroic phases. We have synthesized core-shell multiferroic nano-composites by functionalizing 10–100?nm barium titanate and nickel ferrite nanoparticles with complementary coupling groups and allowing them to self-assemble in the presence of a catalyst. The core-shell structure was confirmed by electron microscopy and magnetic force microscopy. Evidence for strong strain mediated magneto-electric coupling was obtained by static magnetic field induced variations in the permittivity over 16–18?GHz and polarization and by electric field induced by low-frequency ac magnetic fields.

Sreenivasulu, Gollapudi; Hamilton, Sean L.; Lehto, Piper R.; Srinivasan, Gopalan, E-mail: srinivas@oakland.edu [Physics Department, Oakland University, Rochester, Michigan 48309-4401 (United States); Popov, Maksym [Physics Department, Oakland University, Rochester, Michigan 48309-4401 (United States); Radiophysics Department, Taras Shevchenko National University of Kyiv, Kyiv 01601 (Ukraine); Chavez, Ferman A. [Chemistry Department, Oakland University, Rochester, Michigan 48309-4401 (United States)

2014-02-03T23:59:59.000Z

398

Infrared spectroscopy of large scale single layer graphene on self assembled organic monolayer  

SciTech Connect

We study the effect of self-assembled monolayer (SAM) organic molecule substrate on large scale single layer graphene using infrared transmission measurement on Graphene/SAM/SiO{sub 2}/Si composite samples. From the Drude weight of the chemically inert CH{sub 3}-SAM, the electron-donating NH{sub 2}-SAM, and the SAM-less graphene, we determine the carrier density doped into graphene by the three sources—the SiO{sub 2} substrate, the gas-adsorption, and the functional group of the SAM's—separately. The SAM-treatment leads to the low carrier density N???4?×?10{sup 11}?cm{sup ?2} by blocking the dominant SiO{sub 2}- driven doping. The carrier scattering increases by the SAM-treatment rather than decreases. However, the transport mobility is nevertheless improved due to the reduced carrier doping.

Woo Kim, Nak; Youn Kim, Joo; Lee, Chul; Choi, E. J., E-mail: echoi@uos.ac.kr [Department of Physics, University of Seoul, Seoul 130-743 (Korea, Republic of); Jin Kim, Sang; Hee Hong, Byung [Department of Chemistry, Seoul National University, Seoul 151-742 (Korea, Republic of)

2014-01-27T23:59:59.000Z

399

Preparation of hyperbranched polymer films grafted on self-assembled monolayers  

SciTech Connect

In this paper we report the preparation of thin films of new highly branched polymers which are relevant to boundary layer phenomena such as adhesion, wetting, and chemical sensing. Specifically, we synthesized surface-grafted, hyperbranched poly(acrylic acid) (PAA) films on self-assembled organomercaptan monolayers. These films grow in discrete steps, but unlike most layer-by-layer approaches, film thickness increase nonlinearly as a function of the number of layers because of the branched polymer architecture. Moreover, these polymer films contain a high density of carboxylic acid groups, which can selectively bind metal ions or serve as reactive sites for subsequent derivatization. Hyperbranched polymer films thus provide new platforms for chemical sensing applications and for tailoring polymer surface properties for a wide variety of technological applications. 24 refs., 4 figs.

Zhou, Y.; Bruening, M.L.; Bergbreiter, D.E.; Crooks, R.M.; Wells, M. [Texas A& M Univ., College Station, TX (United States)] [Texas A& M Univ., College Station, TX (United States)

1996-04-17T23:59:59.000Z

400

Nanostructured columnar heterostructures of TiO2 and Cu2O enabled by a thin-film self-assembly approach: Potential for photovoltaics  

SciTech Connect

Significant efforts are being devoted to the development of semiconductor thin film and nanostructured material architectures as components of solar energy harvesting and conversion devices. In particular, nanostructured assemblies with well-defined geometrical shapes have emerged as possible highly efficient and economically viable alternatives to planar junction thin film architectures , , , . However, fabrication of inorganic nanostructures generally requires complicated and multiple step processing techniques, making them less suitable for large-scale manufacturing. Hence, innovative cell architectures and materials processing schemes are essential to large-scale integration and practical viability in photovoltaic devices. Here we present here a new approach towards nanostructured thin film solar cells, by exploiting phase-separated self-assembly , . Through a single-step deposition by rf magnetron sputtering, we demonstrate growth of an epitaxial, composite film matrix formed as self-assembled, well ordered, phase segregated, and oriented p-n type interfacial nanopillars of Cu2O and TiO2. The composite films were structurally characterized to atomic resolution by a variety of analytical tools, and evaluated for preliminary optical properties using absorption measurements. We find nearly atomically distinct Cu2O-TiO2 interfaces (i.e. a p-n junction), and an absorption profile that captures a wide range of the solar spectrum extending from ultraviolet to visible wavelengths. This work opens a novel avenue for development of simple and cost-effective optically active thin film architectures, and offers promise for significantly increased photovoltaic device efficiencies using nanostructured cells that can be optimized for both incident light absorption and carrier collection.

Polat, Ozgur [ORNL; Aytug, Tolga [ORNL; Lupini, Andrew R [ORNL; Paranthaman, Mariappan Parans [ORNL; Ertugrul, Memhet [Ataturk University; Bogorin, Daniela Florentina [ORNL; Meyer III, Harry M [ORNL; Wang, Wei [ORNL; Pennycook, Stephen J [ORNL; Christen, David K [ORNL

2013-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "materials synthesis self-assembly" 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

Self-Assembled Materials as Novel Nanotechnology-Enabled Ultrafiltration Membranes  

E-Print Network (OSTI)

Weng, C. H. , Nano- adsorbents for the removal of metallichydrophobic layer silicate adsorbents, Colloid Surface A,and nanoporous carbon adsorbents for removal of trace

Pendergast, MaryTheresa Monahan

2014-01-01T23:59:59.000Z

402

Self-Assembled Materials as Novel Nanotechnology-Enabled Ultrafiltration Membranes  

E-Print Network (OSTI)

membranes for water purification, American Chemical Societymembranes for enhanced water purification, American ChemicalNanomaterials and water purification: Opportunities and

Pendergast, MaryTheresa Monahan

2014-01-01T23:59:59.000Z

403

Self-Assembled Materials as Novel Nanotechnology-Enabled Ultrafiltration Membranes  

E-Print Network (OSTI)

membranes via atmospheric pressure plasma-induced graftis exposed to plasma at atmospheric pressure to prime thea plasma-induced graft polymerization process at atmospheric

Pendergast, MaryTheresa Monahan

2014-01-01T23:59:59.000Z

404

Self-Assembled Materials as Novel Nanotechnology-Enabled Ultrafiltration Membranes  

E-Print Network (OSTI)

21. V. V. Tarabara, in Nanotechnology Applications for Clean2.5.0. Comparison of Nanotechnology-Enabled Materialsof Nanoscience and Nanotechnology: 2002. J. Benito, M.

Pendergast, MaryTheresa Monahan

2014-01-01T23:59:59.000Z

405

Self-Assembled Materials as Novel Nanotechnology-Enabled Ultrafiltration Membranes  

E-Print Network (OSTI)

on polyamide composite reverse osmosis membrane properties,1997, 124, H. Hachisuka, K. Ikeda, Reverse osmosis compositemembrane and reverse osmosis treatment method for water

Pendergast, MaryTheresa Monahan

2014-01-01T23:59:59.000Z

406

Using Magnetic Levitation for Three Dimensional Self-Assembly SUPPORTI G O LI E MATERIAL  

E-Print Network (OSTI)

063-N50; rectangular prisms: grade N42, 4 in Ã? 2 in Ã? 1 in, Model# NB079) were purchased from Applied from Utrecht (Cambridge, MA; www.utrechtart.com). Polyvinyl chloride tape (PVC) and aluminum tape were sink to the bottom of the container in the absence of an applied magnetic field. B) Positioning

Aizenberg, Joanna

407

Self-Assembled Micro-Honeycomb Network of Single-Walled Carbon Nanotubes for Heterojunction Solar Cell  

E-Print Network (OSTI)

Self-Assembled Micro-Honeycomb Network of Single-Walled Carbon Nanotubes for Heterojunction Solar. Here, we propose a self-organized micro- honeycomb network structure of SWNTs obtained by water@photon.t.u-tokyo.ac.jp) Various forms of nano-carbon films such as random network of single-walled carbon nanotubes (SWNTs

Maruyama, Shigeo

408

AFM/LFM surface studies of a ternary polymer blend cast on substrates covered by a self-assembled monolayer  

E-Print Network (OSTI)

AFM/LFM surface studies of a ternary polymer blend cast on substrates covered by a self force microscopy; Friction; Self-assembly; Surface thermodynamics (including phase transitions); Growth are of utmost current interest. In many practical appli- cations films of incompatible mixtures are pre- pared

Zbigniew, Postawa

409

JOURNAL OF MICROELECTROMECHANICAL SYSTEMS, VOL. 12, NO. 4, AUGUST 2003 387 Surface Tension-Powered Self-Assembly of  

E-Print Network (OSTI)

JOURNAL OF MICROELECTROMECHANICAL SYSTEMS, VOL. 12, NO. 4, AUGUST 2003 387 Surface Tension, IEEE Abstract--Because of the low dimensional power of its force scaling law, surface tension on surface tension powered self-assembly of microstructures. The existing theoretical approaches

Prentiss, Mara

410

Three-Dimensional Bicomponent Supramolecular Nanoporous Self-Assembly on a Hybrid All-Carbon Atomically Flat and Transparent Platform  

Science Journals Connector (OSTI)

Three-Dimensional Bicomponent Supramolecular Nanoporous Self-Assembly on a Hybrid All-Carbon Atomically Flat and Transparent Platform ... We thank Ueli Heiz for providing experimental infrastructure at the Institute of Physical Chemistry at TUM. ... electronics are based on conjugated systems predominantly made up of sp2-hybridized carbon, such as graphene nanoribbons. ...

Juan Li; Sarah Wieghold; Murat Anil Öner; Patrick Simon; Moritz V. Hauf; Emanuela Margapoti; Jose A. Garrido; Friedrich Esch; Carlos-Andres Palma; Johannes V. Barth

2014-08-01T23:59:59.000Z

411

Drug Release from Self-Assembled Inorganic?Organic Hybrid Gels and Gated Porosity Detected by Positron Annihilation Lifetime Spectroscopy  

Science Journals Connector (OSTI)

Drug Release from Self-Assembled Inorganic?Organic Hybrid Gels and Gated Porosity Detected by Positron Annihilation Lifetime Spectroscopy ... Institute of Physical Chemistry, University of Münster, Corrensstrasse 36, 48149 Münster, Germany, CSIRO Manufacturing and Infrastructure Technology, Victoria, Australia, and School of Chemistry, Monash University, Clayton Victoria, Australia ...

Ansgar Bögershausen; Steven J. Pas; Anita J. Hill; Hubert Koller

2006-01-06T23:59:59.000Z

412

Investigation of Self-Assembly and Micelle Polarity for a Wide Range of Ethylene Oxide-Propylene Oxide-Ethylene  

E-Print Network (OSTI)

Investigation of Self-Assembly and Micelle Polarity for a Wide Range of Ethylene Oxide-Propylene Oxide-Ethylene Oxide Block Copolymers in Water Josias R. Lopes and Watson Loh* Instituto de Qui of 15 EO-PO-EO (EO ) ethylene oxide, PO ) propylene oxide) block copolymers by using three different

Loh, Watson

413

Self-Assembly of Virus-Structured High Surface Area Nanomaterials and Their Application as Battery Electrodes  

E-Print Network (OSTI)

Self-Assembly of Virus-Structured High Surface Area Nanomaterials and Their Application as Battery templates produced uniform metal coatings up to 40 nm in thickness. Within a nickel-zinc battery system have uses in an array of applications including electrodes, catalyst supports, thermal barriers, sensor

Rubloff, Gary W.

414

Coordinative Self-Assembly and Solution-Phase X-ray Structural Characterization of Cavity-Tailored Porphyrin Boxes  

E-Print Network (OSTI)

Coordinative Self-Assembly and Solution-Phase X-ray Structural Characterization of Cavity motifs, often allows for one-pot assembly of supramolecules of predetermined architecture in high or even(II) sites) (Scheme 1). We reasoned that the torsional problem could be most simply overcome by assembling

415

Self-Assembly of Viral Capsids via a Hamiltonian Paths Approach: The Case of Bacteriophage MS2  

E-Print Network (OSTI)

Self-Assembly of Viral Capsids via a Hamiltonian Paths Approach: The Case of Bacteriophage MS2 of viruses the assembly of the viral capsids that encapsulate and hence provide protection for the viral genome can be modeled as tile assembly, where tiles represent are schematic representations of suitable

Severini, Simone

416

Formation of Hierarchical Nanoparticle Pattern Arrays Using Colloidal Lithography and Two-Step Self-Assembly: Microspheres  

E-Print Network (OSTI)

Formation of Hierarchical Nanoparticle Pattern Arrays Using Colloidal Lithography and Two-Step Self of hierarchical nanoparticle arrays and film patterns using a novel combination of colloidal lithography (CL), two-step self-assembly, and reactive-ion etching (RIE). In this approach, a uniform nanoparticle film (15-50 nm

New Mexico, University of

417

Synthesis and characterization of activated carbo-aluminosilicate material from oil shale  

E-Print Network (OSTI)

Synthesis and characterization of activated carbo-aluminosilicate material from oil shale Reyad activated carbo-aluminosilicate materials were prepared from oil shale by chemical activation. The chemical Published by Elsevier Inc. Keywords: Synthesis; Activated carbo-aluminosilicate; Adsorption; Oil shale

Shawabkeh, Reyad A.

418

Electron Transport Materials: Synthesis, Properties and Device Performance  

SciTech Connect

We report the design, synthesis and characterization, thermal and photophysical properties of two silane based electron transport materials, dibenzo[b,d]thiophen-2-yltriphenylsilane (Si{phi}87) and (dibenzo[b,d]thiophen-2-yl)diphenylsilane (Si{phi}88) and their performance in blue organic light emitting devices (OLEDs). The utility of these materials in blue OLEDs with iridium (III) bis[(4,6-difluorophenyl)-pyridinato-N,C']picolinate (Firpic) as the phosphorescent emitter was demonstrated. Using the silane Si{phi}87 as the electron transport material (ETm) an EQE of 18.2% was obtained, with a power efficiency of 24.3 lm/W (5.8V at 1mA/cm{sup 2}), in a heterostructure. When Si{phi}88 is used, the EQE is 18.5% with a power efficiency of 26.0 lm/W (5.5V at 1mA/cm{sup 2}).

Cosimbescu, Lelia; Wang, Liang; Helm, Monte L.; Polikarpov, Evgueni; Swensen, James S.; Padmaperuma, Asanga B.

2012-06-01T23:59:59.000Z

419

Material synthesis and hydrogen storage of palladium-rhodium alloy.  

SciTech Connect

Pd and Pd alloys are candidate material systems for Tr or H storage. We have actively engaged in material synthesis and studied the material science of hydrogen storage for Pd-Rh alloys. In collaboration with UC Davis, we successfully developed/optimized a supersonic gas atomization system, including its processing parameters, for Pd-Rh-based alloy powders. This optimized system and processing enable us to produce {le} 50-{mu}m powders with suitable metallurgical properties for H-storage R&D. In addition, we studied hydrogen absorption-desorption pressure-composition-temperature (PCT) behavior using these gas-atomized Pd-Rh alloy powders. The study shows that the pressure-composition-temperature (PCT) behavior of Pd-Rh alloys is strongly influenced by its metallurgy. The plateau pressure, slope, and H/metal capacity are highly dependent on alloy composition and its chemical distribution. For the gas-atomized Pd-10 wt% Rh, the absorption plateau pressure is relatively high and consistent. However, the absorption-desorption PCT exhibits a significant hysteresis loop that is not seen from the 30-nm nanopowders produced by chemical precipitation. In addition, we observed that the presence of hydrogen introduces strong lattice strain, plastic deformation, and dislocation networking that lead to material hardening, lattice distortions, and volume expansion. The above observations suggest that the H-induced dislocation networking is responsible for the hysteresis loop seen in the current atomized Pd-10 wt% Rh powders. This conclusion is consistent with the hypothesis suggested by Flanagan and others (Ref 1) that plastic deformation or dislocations control the hysteresis loop.

Lavernia, Enrique J. (University of California, Davis); Yang, Nancy Y. C.; Ong, Markus D. (Whithworth University, Spokane, WA)

2011-08-01T23:59:59.000Z

420

Nano Insulation Materials: Synthesis and Life Cycle Assessment  

Science Journals Connector (OSTI)

Abstract The application of manufactured nanomaterials provides not only advantages resulting from their unique properties, but also disadvantages derived from the possible high energy use and CO2 burden related to their manufacture, operation, and disposal. It is therefore important to evaluate the trade-offs of process economics with the associated environmental impacts in order to strengthen the existing advantages while counteracting disadvantages of nanomaterials. This is of particular importance at the early stage of the development, where different synthetic approaches with different energy and environmental impacts may be employed. We discuss here the importance of life cycle assessment (LCA) on the synthesis of nano insulation materials (NIMs) consisting of hollow silica nanospheres (HSNSs). The results indicate that the use of recyclable and environmentally friendly raw materials can improve greatly the process environmental footprints. New synthetic procedures are developed accordingly for HSNS \\{NIMs\\} with improved environmental features as well as thermal insulation performance. © 2014 The Authors. Published by Elsevier B.V. Selection and peer-review under responsibility of the International Scientific Committee of the 21st CIRP Conference on Life Cycle Engineering in the person of the Conference Chair Prof. Terje K. Lien.

Tao Gao; Linn Ingunn C. Sandberg; Bjørn Petter Jelle

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "materials synthesis self-assembly" 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

Materials Discovery Design and Synthesis | U.S. DOE Office of Science (SC)  

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

Discovery Design and Synthesis Discovery Design and Synthesis Materials Sciences and Engineering (MSE) Division MSE Home About Research Areas Energy Frontier Research Centers (EFRCs) DOE Energy Innovation Hubs BES Funding Opportunities The Computational Materials and Chemical Sciences Network (CMCSN) Theoretical Condensed Matter Physics Scientific Highlights Reports and Activities Principal Investigators' Meetings BES Home Research Areas Materials Discovery Design and Synthesis Print Text Size: A A A RSS Feeds FeedbackShare Page Research is supported in the discovery and design of novel materials and the development of innovative materials synthesis and processing methods. This research is guided by applications of concepts learned from the interface between physics and biology and from nano-scale understanding of

422

Spontaneous evolution of self-assembled phases from anisotropic colloidal dispersions  

E-Print Network (OSTI)

We investigate the spontaneous evolution of various self-assembled phase states from a homogeneous aqueous dispersion of high-aspect ratio Montmorillonite (Na Cloisite) nanoclay platelets grounded on the observations made over a period of 3.5 years. We have established the tw-c phase diagram for this system for the first time in salt-free suspensions under normal pH conditions using rheology experiments and have detected that these suspensions do undergo nontrivial phase evolution and aging dynamics. Distinctive phase separation, equilibrium fluid and equilibrium gels in the tw-c phase space are discovered. Cole-Cole plots derived from rheology measurements suggested the presence of inter connected network-like structures for c > cg, cg being the gelation concentration. All dispersions formed stable sols during the initial time, and with aging network-like structures were found to form via two routes: one for c cg, through equilibrium gelation. This has invoked and called for a revisit of the phase diagram of aging MMT dispersions.

Ravi Kumar Pujala; Nidhi Joshi; H. B. Bohidar

2013-06-07T23:59:59.000Z

423

Atomic-scale X-ray structural analysis of self-assembled monolayers on Silicon  

SciTech Connect

Two related self-assembled monolayers (SAMs), 4-bromostyrene (BrSty) and 4-bromophenylacetylene (BPA), are photochemically grown from solution on to the monohydride-terminated Si(111) surface. The atomic-scale structures of the resulting SAMs are examined by X-ray standing waves (XSW), X-ray reflectivity (XRR), X-ray fluorescence, atomic-force microscopy (AFM), X-ray photoelectron spectroscopy (XPS), and density functional theory (DFT). The coverage is 0.5 ML. The results show that in each case the molecule covalently bonds to a single Si T{sub 1} site and stands up-right with a slight molecular tilt of 17{sup o} that leaves the Br terminal end over a neighboring T{sub 4} site. The Br height is 8.5 {angstrom} (BrSty) and 8.6 {angstrom} (BPA) above the top surface Si atom. The combined XSW and XRR results rule-out two alternative bonding models predicted by DFT that have the root of the molecule bonded to two neighboring top Si surface atoms. Based on the XSW 111 and 333 coherent fractions, the BPA/Si(111) has a reduced vertical Br distribution width in comparison to BrSty. This greater rigidity in the molecular structure is correlated to a C=C bond at the root.

Lin, J.-C.; Kellar, J.A.; Kim, J.-H.; Yoder, N.L.; Bevan, K.H.; Nguyen, S.T.; Hersam, M.C.; Bedzyk, M.J.; (NWU); (Purdue)

2009-04-02T23:59:59.000Z

424

Self-assembled glycol chitosan nanoparticles for disease-specific theranostics  

Science Journals Connector (OSTI)

Abstract Hydrophobically modified glycol chitosan (hGC) conjugates spontaneously form self-assembled nanoparticles (NPs) in aqueous conditions, and glycol chitosan \\{NPs\\} (CNPs) have been extensively studied for the past few decades. For disease-specific theranostics, \\{CNPs\\} could be simply modified with imaging agents, and the hydrophobic domains of hGC are available for encapsulation of various drugs. Based on the excellent physiochemical and biological properties, \\{CNPs\\} have been investigated for multimodal imaging and target specific drug delivery. In particular, a recent application of \\{CNPs\\} has shown great potential as an efficient theranostic system because the \\{CNPs\\} could be utilized for a disease-specific theranostic delivery system of different imaging agents and therapeutics, simultaneously. Furthermore, various therapeutic agents including chemo-drugs, nucleotides, peptides, and photodynamic chemicals could be simply encapsulated into the \\{CNPs\\} through hydrophobic or charge–charge interactions. Under in vivo conditions, the encapsulated imaging agents and therapeutic drugs have been successfully delivered to targeted diseases. In this article, the overall research progress on \\{CNPs\\} is reviewed from early works. The current challenges of \\{CNPs\\} to overcome in theranostics are also discussed, and continuous studies would provide more opportunities for early diagnosis of diseases and personalized medicine.

Ji Young Yhee; Sohee Son; Sun Hwa Kim; Kinam Park; Kuiwon Choi; Ick Chan Kwon

2014-01-01T23:59:59.000Z

425

Correlating Electronic Transport to Atomic Structures in Self-Assembled Quantum Wires  

SciTech Connect

Quantum wires, as a smallest electronic conductor, are expected to be a fundamental component in all quantum architectures. The electronic conductance in quantum wires, however, is often dictated by structural instabilities and electron localization at the atomic scale. Here we report on the evolutions of electronic transport as a function of temperature and interwire coupling as the quantum wires of GdSi{sub 2} are self-assembled on Si(100) wire-by-wire. The correlation between structure, electronic properties, and electronic transport are examined by combining nanotransport measurements, scanning tunneling microscopy, and density functional theory calculations. A metal-insulator transition is revealed in isolated nanowires, while a robust metallic state is obtained in wire bundles at low temperature. The atomic defects lead to electron localizations in isolated nanowire, and interwire coupling stabilizes the structure and promotes the metallic states in wire bundles. This illustrates how the conductance nature of a one-dimensional system can be dramatically modified by the environmental change on the atomic scale.

Li, An-Ping [ORNL; Qin, Shengyong [ORNL; Kim, Tae Hwan [ORNL; Ouyang, Wenjie [University of California, Irvine; Zhang, Yanning [University of California, Irvine; Weitering, Harm H [ORNL; Shih, Chih-Kang [University of Texas, Austin; Baddorf, Arthur P [ORNL; Wu, Ruiqian [University of California, Irvine

2012-01-01T23:59:59.000Z

426

Bilayer self-assembly on a hydrophilic, deterministically nano-patterned surface  

SciTech Connect

We present measurements of the in-situ, microscopic architecture of a self-assembled bilayer at the interface between a regularly nano-patterned surface and an aqueous sub-phase using neutron reflectometry. The substrate is patterned with a rectangular array of nano-scaled holes. Because of the high quality of the pattern, using neutron reflectometry, we are able to map the surface-normal density distribution of the patterned silicon, the penetration of water into the pattern, and the distribution of a deposited film inside and outside of the etched holes. In this study, 1,2-dilauroyl-sn-glycero-3-phosphocholine (DLPC) single bilayers were deposited on the hydrophilic patterned surface. For bilayers deposited either by vesicle fusion (VF) or by the Langmuir Schaefer (L-S) technique, the most consistent model found to fit the data shows that the lipids form bilayer coatings on top of the substrate as well as the bottoms of the holes in an essentially conformal fashion. However, while there is a single bilayer on the unetched silicon surface, the lipids coating the bottoms of the holes form a complex bimodal structure consistent with a rough surface produced by the etching process. This study provides insight into film transfer both outside and inside regular nano-patterned features.

Smith, Gregory Scott [ORNL] [ORNL; Jung, Seung-Yong [ORNL] [ORNL; Browning, Jim [ORNL] [ORNL; Keum, Jong Kahk [ORNL] [ORNL; Lavrik, Nickolay V [ORNL] [ORNL; Alemseghed, Mussie G [ORNL] [ORNL; Collier, Pat [ORNL] [ORNL

2013-01-01T23:59:59.000Z

427

Microstructural and magnetic characterizations of CoFeCu electrodeposited in self-assembled mesoporous silicon  

Science Journals Connector (OSTI)

Abstract Self-assembled mesoporous silicon with quasi-regular pore arrangements has been fabricated by the electrochemical anodization process in hydrofluoric acid solution. CoFeCu was electrodeposited in this structure from a bath containing sodium acetate as a complexing agent with a pH value of 5. The effect of current density on the morphology, the structure and the magnetic properties of CoFeCu deposit was studied by SEM, EDS, DRX and VSM. It has been shown that the morphology and structure of samples were strongly influenced by the current density and etching duration. The micrographs show the vertical and branched nanowires and also a discontinuous growth of wires. Further, the growth of a thick layer from the grain boundaries of released CoFeCu wires is produced. The magnetic hysteresis loops demonstrate that the CoFeCu nanowires exhibit easy magnetic axis perpendicular to the PS channels axis when the current density varied from 3 to 10 mA/cm2. Nevertheless, they reveal a no magnetic anisotropy of CoFeCu nanostructures deposited only in the outside of porous silicon, probably due to the vanishing the shape anisotropy.

G. Fortas; N. Haine; S. Sam; N. Gabouze; A. Saifi; S. Ouir; H. Menari

2015-01-01T23:59:59.000Z

428

Argonne CNM: Electronic & Magnetic Materials & Devices Capabilities  

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

Electronic & Magnetic Materials & Devices Capabilities Synthesis Colloidal chemistry and self-assembly techniques Complex oxide film synthesis via molecular beam epitaxy (DCA R450 Custom) Physical vapor deposition (Lesker CMS 18 and PVD 250) Spin coating (Laurell WS-400) Characterization Variable-temperature (VT) scanning tunneling microscope with atomic force microscopy capabilities (Omicron VT-AFM/STM), operates in an ultrahigh vacuum (UHV) environment with a base pressure of < 1E-10 mbar and 55-400 K. Atomic resolution is routinely obtained at room temperature and below. The AFM capabilities support a range of scanning modes. The analysis chamber also houses a LEED/Auger with an attached preparation chamber for sample cleaning and deposition (sputter cleaning, direct current heating, e-beam heating stage, metal deposition, etc.)

429

The Mechanism of Hydrogen Formation Induced by Low-Energy Electron Irradiation of Hexadecanethiol Self-Assembled Monolayers  

Science Journals Connector (OSTI)

Département de chimie, Université de Sherbrooke, Centre for Self-Assembled Chemical Systems, Sherbrooke, Québec, Canada J1K 2R1 ... 1 For example, electron beams used in conventional LEED (100 eV) can cause irreversible degradation of LB films2 and n-alkanes SAMs,3 although low-current LEED instrumentation can now preclude these effects and enable structural determinations of chemisorbed thiol systems. ... Canadian Journal of Chemistry (1960), 38 (), 539-43 CODEN: CJCHAG; ISSN:0008-4042. ...

Etienne Garand; Paul A. Rowntree

2005-06-15T23:59:59.000Z

430

Characterization Of The Local Electrical Environment In An Electrically-guided Protein Patterning System Incorporating Antifouling Self-assembled Monolayer  

E-Print Network (OSTI)

Infrared Spectroscopy GMPCPP Guanosine-5?-[(?,?)-methyleno]triphosphate MIBK Methyl Isobutyl Ketone MPEOPS 2-[methoxypoly-(ethyleneoxy)propyl]-trimethoxysilane MT Microtubule PEG-SAM Poly(ethylene glycol) Self Assembled Monolayer PMMA Poly... in acetone for five minutes, followed by rinsing with acetone and isopropanol and drying with nitrogen gas. After the cleaned silicon wafers were placed on a hot plate at 200 ?C for complete drying, a few drops of electon-beam resist (PMMA (poly...

Park, Jinseon

2011-10-21T23:59:59.000Z

431

MoS{sub 2} nanotube exfoliation as new synthesis pathway to molybdenum blue  

SciTech Connect

Graphical abstract: . Display Omitted Highlights: ? New synthesis approach to obtaining molybdenum blue via exfoliated MoS{sub 2} nanotubes. ? Material is prone to self assembly and is stable in high vacuum. ? Molecules are as small as 2 nm and their clusters are up to tens of nanometers. ? Change in absorption and oxidation states from the precursor MoS{sub 2}. -- Abstract: Molybdenum blue-type materials are usually obtained by partially reducing Mo{sup VI+} in acidic solutions, while in the presented method it is formed in ethanol solution of exfoliated MoS{sub 2} nanotubes, where the MoS{sub 2} flakes are the preferential location for their growth. Material was investigated by means of scanning electron and atomic force microscopy, showing the structure and self assembly, while also confirming that it is stable in high vacuum with molecules as small as 1.6 nm and the agglomerates of few tens of nanometres. The ultraviolet–visible and photoelectron spectrometry show the change in absorption properties and oxidation states from MoS{sub 2} structure to molybdenum blue, while the presence of sulphur suggests that this is a new type of molybdenum blue material.

Visic, B., E-mail: bojana.visic@ijs.si [Jozef Stefan Institute, Jamova cesta 39, SI-1000 Ljubljana (Slovenia); Gunde, M. Klanjsek [National Institute of Chemistry, Hajdrihova 19, SI-1000 Ljubljana (Slovenia)] [National Institute of Chemistry, Hajdrihova 19, SI-1000 Ljubljana (Slovenia); Kovac, J.; Iskra, I. [Jozef Stefan Institute, Jamova cesta 39, SI-1000 Ljubljana (Slovenia)] [Jozef Stefan Institute, Jamova cesta 39, SI-1000 Ljubljana (Slovenia); Jelenc, J.; Remskar, M. [Jozef Stefan Institute, Jamova cesta 39, SI-1000 Ljubljana (Slovenia) [Jozef Stefan Institute, Jamova cesta 39, SI-1000 Ljubljana (Slovenia); Centre of Excellence Namaste, Jamova cesta 39, SI-1000 Ljubljana (Slovenia)

2013-02-15T23:59:59.000Z

432

Effects of the Combination of Microfracture and Self-Assembling Peptide Filling on the Repair of a Clinically Relevant Trochlear Defect in an Equine Model  

E-Print Network (OSTI)

Background: The goal of this study was to test the ability of an injectable self-assembling peptide (KLD) hydrogel, with or without microfracture, to augment articular cartilage defect repair in an equine cartilage defect ...

Barrett, M. F.

433

JOURNAL OF MATERIALS SCIENCE 36 (2001) 77 86 Synthesis of yttria-doped strontium-zirconium  

E-Print Network (OSTI)

JOURNAL OF MATERIALS SCIENCE 36 (2001) 77­ 86 Synthesis of yttria-doped strontium-zirconium oxide densification, than co-precipitated powders. C 2001 Kluwer Academic Publishers 1. Introduction Strontium

Iglesia, Enrique

434

Synthesis of Operating Procedures for Material and Energy Conversions in a Batch Plant  

Science Journals Connector (OSTI)

The problem of operating procedure synthesis for chemical process plants is investigated. The knowledge about plant structure and material-conversion procedures was represented by directed graphs and the subgr...

Yoichi Kaneko; Yoshiyuki Yamashita…

2003-01-01T23:59:59.000Z

435

Self-assembled monolayer cleaning methods: Towards fabrication of clean high-temperature superconductor nanostructures  

SciTech Connect

Although extensive amounts of research have been carried out on superconductor-normal metal-superconductor (SNS) electronic devices, the fabrication of superconductor SNS devices still remains difficult. Surface modification of high-temperature superconductors could be a way to control the interface of SNS electronic device fabrication. Here, we developed a cleaning method for thin films of high-temperature superconductor surface based on self-assembled monolayers. High-quality c-axis orientated YBa{sub 2}Cu{sub 3}O{sub 7-{delta}} (i.e., YBCO) and Y{sub 0.6}Ca{sub 0.4}Ba{sub 1.6}La{sub 0.4}Cu{sub 3}O{sub 7-{delta}} (i.e., TX-YBCO) thin films were deposited by standard laser ablation methods. YBCO/Au/YBCO and TX-YBCO/Au/TX-YBCO planar type junctions were fabricated by photolithography, focused-ion-beam milling, and ex situ sputter depositions. A 40-50 nm nanotrench was ion milled on the thin film by FIB, and a thin gold layer was deposited by an ex situ method on the nanotrench to connect the two separated high-temperature superconductor electrodes. SEM, AFM, and R vs T resistivity measurements were used to compare the corrosion layer formed in the interface of the SNS junctions with the SAM cleaned SNS junction. Evidence here suggests that the SAM cleaning method can be used to remove the degradation layer on the surface of cuprate superconductors. The obtained contact resistivity value (10{sup -8} {omega} cm{sup 2}) for a SNS junction with SAM treatment is comparable with that of SNS junctions fabricated by the in situ methods.

Kim, Sungwook; Chang, In Soon; McDevitt, John T. [Department of Chemistry and Biochemistry, Center for Nano- and Molecular Science and Technology, University of Texas at Austin, Austin, Texas 78712-1167 (United States)

2005-04-11T23:59:59.000Z

436

Cathodoluminescence imaging and spectroscopy of excited states in InAs self-assembled quantum dots  

SciTech Connect

We have examined state filling and thermal activation of carriers in buried InAs self-assembled quantum dots (SAQDs) with excitation-dependent cathodoluminescence (CL) imaging and spectroscopy. The InAs SAQDs were formed during molecular-beam epitaxial growth of InAs on undoped planar GaAs (001). The intensities of the ground- and excited-state transitions were analyzed as a function of temperature and excitation density to study the thermal activation and reemission of carriers. The thermal activation energies associated with the thermal quenching of the luminescence were measured for ground- and excited-state transitions of the SAQDs, as a function of excitation density. By comparing these activation energies with the ground- and excited-state transition energies, we have considered various processes that describe the reemission of carriers. Thermal quenching of the intensity of the QD ground- and first excited-state transitions at low excitations in the {approx}230-300-K temperature range is attributed to dissociation of excitons from the QD states into the InAs wetting layer. At high excitations, much lower activation energies of the ground and excited states are obtained, suggesting that thermal reemission of single holes from QD states into the GaAs matrix is responsible for the observed temperature dependence of the QD luminescence in the {approx}230-300-K temperature range. The dependence of the CL intensity of the ground-and first excited-state transition on excitation density was shown to be linear at all temperatures at low-excitation density. This result can be understood by considering that carriers escape and are recaptured as excitons or correlated electron-hole pairs. At sufficiently high excitations, state-filling and spatial smearing effects are observed together with a sublinear dependence of the CL intensity on excitation. Successive filling of the ground and excited states in adjacent groups of QDs that possess different size distributions is assumed to be the cause of the spatial smearing.

Khatsevich, S.; Rich, D.H.; Kim, Eui-Tae; Madhukar, A. [Department of Physics, Ilse Katz Center for Meso and Nanoscale Science and Technology, Ben-Gurion University of the Negev, P.O. Box 653, Beer-Sheva 84105 (Israel); Department of Materials Science and Engineering, Nanostructure Materials and Devices Laboratory, University of Southern California, Los Angeles, California 90089-0241 (United States)

2005-06-15T23:59:59.000Z

437

A Cooperative Sequential Adsorption Model in Two Dimensions with Experimental Applications for Ionic Self-Assembly of Nanoparticles  

E-Print Network (OSTI)

Self-assembly of nanoparticles is an important tool in nanotechnology, with numerous applications including thin films, electronics, and drug delivery. We study the deposition of ionic nanoparticles on a glass substrate both experimentally and theoretically. Our theoretical model consists of a stochastic cooperative adsorption and evaporation process on a two-dimensional lattice. By exploring the relationship between the initial concentration of nanoparticles in the colloidal solution and the density of particles deposited on the substrate, we relate the deposition rate of our theoretical model to the concentration.

L. Jonathan Cook; D. A. Mazilu; I. Mazilu; B. M. Simpson; E. M. Schwen; V. O. Kim; A. M. Seredinski

2014-05-23T23:59:59.000Z

438

Dramatically enhanced self-assembly of GeSi quantum dots with superior photoluminescence induced by the substrate misorientation  

SciTech Connect

A dramatically enhanced self-assembly of GeSi quantum dots (QDs) is disclosed on slightly miscut Si (001) substrates, leading to extremely dense QDs and even a growth mode transition. The inherent mechanism is addressed in combination of the thermodynamics and the growth kinetics both affected by steps on the vicinal surface. Moreover, temperature-dependent photoluminescence spectra from dense GeSi QDs on the miscut substrate demonstrate a rather strong peak persistent up to 300 K, which is attributed to the well confinement of excitons in the dense GeSi QDs due to the absence of the wetting layer on the miscut substrate.

Zhou, Tong; Zhong, Zhenyang, E-mail: zhenyangz@fudan.edu.cn [State Key Laboratory of Surface Physics and Department of Physics, Fudan University, Shanghai 200433 (China)

2014-02-01T23:59:59.000Z

439

Hypermodular Self-Assembling Space Solar Power -- Design Option for Mid-Term GEO Utility-Scale Power Plants  

E-Print Network (OSTI)

This paper presents a design for scaleable space solar power systems based on free-flying reflectors and module self-assembly. Lower system cost of utility-scale space solar power is achieved by design independence of yet-to-be-built in-space assembly or transportation infrastructure. Using current and expected near-term technology, this study describe a design for mid-term utility-scale power plants in geosynchronous orbits. High-level economic considerations in the context of current and expected future launch costs are given as well.

Leitgab, Martin

2013-01-01T23:59:59.000Z

440

Narrow spectral linewidth of single zinc-blende GaN/AlN self-assembled quantum dots  

SciTech Connect

We study by microphotoluminescence the optical properties of single self-assembled zinc-blende GaN/AlN quantum dots grown by plasma-assisted molecular beam epitaxy. As opposed to previous reports, the high quality of such zinc-blende GaN quantum dots allows us to evidence a weak acoustic phonon sideband as well as a limited spectral diffusion. As a result, we report on resolution-limited quantum dot linewidths as narrow as 500 ± 50 ?eV. We finally confirm the fast radiative lifetime and high-temperature operation of such quantum dots.

Sergent, S. [Institute for Nano Quantum Information Electronics, The University of Tokyo, 4-6-1 Komaba, Meguro, Tokyo 153-8505 (Japan)] [Institute for Nano Quantum Information Electronics, The University of Tokyo, 4-6-1 Komaba, Meguro, Tokyo 153-8505 (Japan); Kako, S. [Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro, Tokyo 153-8505 (Japan)] [Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro, Tokyo 153-8505 (Japan); Bürger, M.; As, D. J. [Department Physik, Universität Paderborn, Warburger Str. 100, 33098 Paderborn (Germany)] [Department Physik, Universität Paderborn, Warburger Str. 100, 33098 Paderborn (Germany); Arakawa, Y. [Institute for Nano Quantum Information Electronics, The University of Tokyo, 4-6-1 Komaba, Meguro, Tokyo 153-8505 (Japan) [Institute for Nano Quantum Information Electronics, The University of Tokyo, 4-6-1 Komaba, Meguro, Tokyo 153-8505 (Japan); Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro, Tokyo 153-8505 (Japan)

2013-10-07T23:59:59.000Z

Note: This page contains sample records for the topic "materials synthesis self-assembly" 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

Computational study of the transport mechanisms of molecules and ions in solid materials  

E-Print Network (OSTI)

electrolytes is a key element in the development of the solid lithium ion batteries. One promising material is dilithium phthalocyanine (Li2Pc), which upon self-assembly may form conducting channels for fast ion transport. Computational chemistry is employed...

Zhang, Yingchun

2009-06-02T23:59:59.000Z

442

Composition-Tailored Synthesis of Gradient Transition Metal Precursor Particles for Lithium-Ion Battery Cathode Materials  

Science Journals Connector (OSTI)

Composition-Tailored Synthesis of Gradient Transition Metal Precursor Particles for Lithium-Ion Battery Cathode Materials ... Collected particles were lithiated, and one promising material was evaluated as the active cathode component in a lithium-ion battery. ...

Gary M. Koenig, Jr.; Ilias Belharouak; Haixai Deng; Yang-Kook Sun; Khalil Amine

2011-03-09T23:59:59.000Z

443

The synthesis and characterization of porous, conductive, and ordered materials  

E-Print Network (OSTI)

Two different classes of polymers were pursued as candidates for materials possessing porosity, conductivity, and crystalline order. Attempts were made with hexaazatrinaphthylene- and dibenzotetrathiafulvalene-based ...

Narayan, Tarun Chandru

2013-01-01T23:59:59.000Z

444

Facile synthesis of nanostructured vanadium oxide as cathode materials for efficient Li-ion batteries  

E-Print Network (OSTI)

approximately 100 nm in width and 1­2 mm in length have been fabricated via the hydrothermal process microspheres;10 hydrothermal synthesis of VO2 (B) nanobelts,11,12 nanorods,13 nanoflakes and nanoflowers.14 materials, long fabrication times and complicated processing methods, which in turn result in a high cost

Cao, Guozhong

445

Graphene oxide-based materials : synthesis, characterization and applications.  

E-Print Network (OSTI)

??In this study, the properties and applications of graphene oxide-based materials have been explored. Specifically, graphene oxide, i.e. a single layer of graphite oxide, reduced… (more)

Zhou, Xiaozhu.

2010-01-01T23:59:59.000Z

446

Novel nano-structured materials: synthesis and application  

Science Journals Connector (OSTI)

Novel nano-structured materials: nano-particle materials like V-SiO2, TiO2 and nano-sized pore materials like Si-MCM-41, Ti-MCM-41 and Al-MCM-41Analogues were successfully synthesised using different methods: precipitation, sol-gel, micro-emulsion and hydrothermal treatment. These obtained nano-structured materials were characterised by using different physico-chemical methods: FE-SEM, TEM, XRD, IR, UV-vis and nitrogen adsorption/desorption (BET). These materials were examined to investigate adsorptive and catalytic properties of the materials. Nano TiO2 exhibited highly photocatalytic activity in the degradation of methyl red (MR). Pure silica form MCM-41 (Si-MCM-41Analogue) was a selective absorbent for VOCs (m-xylene) removal. Ti substituted MCM-41Analogue exhibited highly photocatalytic activity in the degradation of red phenol (RP) while Al substituted MCM-41Analogue showed high catalytic cracking of petroleum residue (Bach Ho oil field – Vietnam). The obtained results are discussed and rationalised.

Vu Anh Tuan; Tran Manh Cuong; Dang Tuyet Phuong; Tran Thi Kim Hoa; Bui Thi Hai Linh; Nguyen Dinh Tuyen; Nguyen Quoc Tuan

2011-01-01T23:59:59.000Z

447

Self-Assembly of Functional Polymers | MIT-Harvard Center for...  

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

ionic templates provides an alternative method to control structures in optoelectronic materials using block copolymers processed under aqueous conditions. Reversible...

448

Fabrication of FCC-SiO{sub 2} colloidal crystals using the vertical convective self-assemble method  

SciTech Connect

In order to determine the optimal conditions for the growth of high-quality 250 nm-SiO{sub 2} colloidal crystals by the vertical convective self-assemble method, the Design of Experiments (DoE) methodology is applied. The influence of the evaporation temperature, the volume fraction, and the pH of the colloidal suspension is studied by means of an analysis of variance (ANOVA) in a 3{sup 3} factorial design. Characteristics of the stacking lattice of the resulting colloidal crystals are determined by scanning electron microscopy and angle-resolved transmittance spectroscopy. Quantitative results from the statistical test show that the temperature is the most critical factor influencing the quality of the colloidal crystal, obtaining highly ordered structures with FCC stacking lattice at a growth temperature of 40°C.

Castañeda-Uribe, O. A.; Salcedo-Reyes, J. C.; Méndez-Pinzón, H. A. [Thin Films Group, Physics Department, Pontificia Universidad Javeriana, Cr. 7 No. 43-82, Ed. 53, Lab. 414, Bogotá, D.C. (Colombia); Pedroza-Rodríguez, A. M. [Microbiology Department, Pontificia Universidad Javeriana, Cr. 7 No. 43-82, Ed. 51, Lab. 101, Bogotá, D.C. (Colombia)

2014-05-15T23:59:59.000Z

449

Sealing off a carbon nanotube with a self-assembled aqueous valve for the storage of hydrogen in GPa pressure  

E-Print Network (OSTI)

The end section of a carbon nanotube, cut by acid treatment, contains hydrophillic oxygen groups. Water molecules can self-assemble around these groups to seal off a carbon nanotube and form an "aqueous valve". Molecular dynamics simulations on single-wall (12,12) and (15,15) tubes with dangling carboxyl groups show that the formation of aqueous valves can be achieved both in the absence of and in the presence of high pressure hydrogen. Furthermore, significant diffusion barriers through aqueous valves are identified. It indicates that such valves could hold hydrogen inside the tube with GPa pressure. Releasing hydrogen is easily achieved by melting the "aqueous valve". Such a design provides a recyclable and non- destructive way to store hydrogen in GPa pressure. Under the storage conditions dictated by sealing off the container in liquid water, the hydrogen density inside the container is higher than that for solid hydrogen, which promises excellent weight storage efficiency.

Chen, H Y; Gong, X G; Liu, Zhi-Feng

2012-01-01T23:59:59.000Z

450

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

451

Measurement of the Charge Number Per Adsorbed Molecule and Packing Densities of Self-Assembled Long-Chain Monolayers of Thiols  

E-Print Network (OSTI)

Measurement of the Charge Number Per Adsorbed Molecule and Packing Densities of Self-Assembled Long a recently developed method (Langmuir 2006, 22, 5509-5519) to determine charge numbers per adsorbed molecule number per adsorbed molecule on the electrode potential, taking into account that the desorption process

Dutcher, John

452

The influence of anion-pi interactions between multi-atomic anions and pi-acidic ring systems on the self-assembly of coordination compounds  

E-Print Network (OSTI)

involving large complex anions are controlling elements in self-assembly reactions with cations that involve ?-acidic ring systems. Syntheses performed with the ligand 3-6-bis(2’-pyridyl)-1,2,4,5-tetrazine, or bptz, with M(II) first row transition metal...

Schottel, Brandi Lee

2009-05-15T23:59:59.000Z

453

1038 2013 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheimwileyonlinelibrary.com Molecular Self-Assembly on Graphene  

E-Print Network (OSTI)

1038 © 2013 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheimwileyonlinelibrary.com reviews Graphene Molecular Self-Assembly on Graphene J. M. MacLeod,* and F. Rosei* The formation of ordered arrays with tailored properties. In recent years, graphene has emerged as an appealing substrate for molecular self

454

Attractive electrostatic self-assembly of ordered and disordered heterogeneous colloids  

E-Print Network (OSTI)

Ionic colloidal crystals are here defined as multicomponent ordered colloidal structures stabilized by attractive electrostatic interactions. These crystals are colloidal analogues to ionic materials including zincblende, ...

Maskaly, Garry R. (Garry Russell), 1978-

2005-01-01T23:59:59.000Z

455

In vitro studies of single-stranded RNA virus self-assembly.  

E-Print Network (OSTI)

??Viruses are self-replicating nucleoprotein complexes that have the ability to cause diseases and are composed of, at least, a single copy of genetic material (either… (more)

Comas Garcia, Mauricio

2013-01-01T23:59:59.000Z

456

Simple and rapid synthesis of ultrathin gold nanowires, their self-assembly and application in surface-enhanced Raman scatteringw  

E-Print Network (OSTI)

, Accepted 26th January 2009 First published as an Advance Article on the web 23rd February 2009 DOI: 10 temperature without stirring for 4B5 hours until the color gradually changed to dark red. The final products

Xing, Bengang

457

Rational Synthesis, Self-Assembly, and Optical Properties of PbS-Au Heterogeneous Nanostructures via Preferential  

E-Print Network (OSTI)

to their narrow size distribution and intrinsic high-symmetry, the resulting PbS-Au4 and PbS-Aun heterogeneous the solution growth of gold tips on hexagonal-phase CdSe nanorods at room temperature.1 This selective growth. (3) Yu, H.; Chen, M.; Rice, P. M.; Wang, S. X.; White, R. L.; Sun, S. Nano Lett. 2005, 5, 379. Li, Y

Wei, Ji

458

Ultralow Thermal Conductivity in Organoclay Nanolaminates Synthesized via Simple Self-Assembly  

E-Print Network (OSTI)

transform fully dense solids into ultralow thermal conductivity materials. Here we report a simple self of nanolaminate spacing. A simple series resistance model describes the behavior and gives an interfacial thermal thermal conductance For phonon-mediated heat conduction, a material is generally thought to reach its

Braun, Paul

459

Organic Macromolecular High Dielectric Constant Materials: Synthesis, Characterization, and Applications  

Science Journals Connector (OSTI)

It will lead to a thermal effect and perhaps thermal failure of devices. ... The white light was then overlapped with the pump beam in a 2 mm quartz cuvette containing the sample, and the change in the absorbance for the signal was collected by a CCD detector (Ocean Optics). ... In many ?-conjugated organic materials, up-converted ultrafast fluorescence dynamics and anisotropy decay experiments have been applied successfully to reveal possible ultrafast processes, such as vibrational relaxation and singlet–singlet annihilation, occurring in a time scale shorter than 20 ps, and to validate the presence and type of intramolecular energy and charge transfer processes. ...

Meng Guo; Teruaki Hayakawa; Masa-aki Kakimoto; Theodore Goodson; III

2011-09-27T23:59:59.000Z

460

Nanostructured electrospun fibers : from superhydrophobicity to block copolymer self-assembly  

E-Print Network (OSTI)

Electrospinning has emerged in recent years as a relatively easy, efficient and robust method to make ultrafine continuous fibers with diameter on the order of -100 nm from a variety of materials. As a result, numerous ...

Ma, Minglin

2008-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "materials synthesis self-assembly" 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

Theoretical Investigation of Self-Assembled Peptide Nanostructures for Biotechnological and Biomedical Applications  

E-Print Network (OSTI)

In this dissertation, molecular simulation techniques are used for the theoretical prediction of nanoscale properties for peptide-based materials. This work is focused on two particular systems: peptide nanotubes formed by cyclic-D,L peptide units...

Carvajal Diaz, Jennifer Andrea

2012-07-16T23:59:59.000Z

462

Self-Assembly of Azulenic Monolayer Films on Metallic Gold Surfaces  

E-Print Network (OSTI)

Derivatives of azulene, an unusual nonbenzenoid aromatic hydrocarbon featuring fused five- and seven-membered sp2 carbon rings, are of substantial current interest in the design of advanced functional materials such as ...

Neal, Brad

2012-08-31T23:59:59.000Z

463

Controlling the Surface Chemistry of Graphite by Engineered Self-Assembled Peptides  

Science Journals Connector (OSTI)

Materials Science and Engineering, Genetically Engineered Materials Science and Engineering Center, University of Washington, 302 Roberts Hall, Seattle, Washington 98195, United States ... The content is solely the responsibility of the authors and does not necessarily represent the official views of the National Cancer Institute or the National Institutes of Health. ... is increasing the likelihood of engineered nanomaterials coming into contact with humans and the environment. ...

Dmitriy Khatayevich; Christopher R. So; Yuhei Hayamizu; Carolyn Gresswell; Mehmet Sarikaya

2012-03-19T23:59:59.000Z

464

Metal-oxide-based energetic materials and synthesis thereof  

DOE Patents (OSTI)

A method of preparing energetic metal-oxide-based energetic materials using sol-gel chemistry has been invented. The wet chemical sol-gel processing provides an improvement in both safety and performance. Essentially, a metal-oxide oxidizer skeletal structure is prepared from hydrolyzable metals (metal salts or metal alkoxides) with fuel added to the sol prior to gelation or synthesized within the porosity metal-oxide gel matrix. With metal salt precursors a proton scavenger is used to destabilize the sol and induce gelation. With metal alkoxide precursors standard well-known sol-gel hydrolysis and condensation reactions are used. Drying is done by standard sol-gel practices, either by a slow evaporation of the liquid residing within the pores to produce a high density solid nanocomposite, or by supercritical extraction to produce a lower density, high porous nanocomposite. Other ingredients may be added to this basic nanostructure to change physical and chemical properties, which include organic constituents for binders or gas generators during reactions, burn rate modifiers, or spectral emitters.

Tillotson, Thomas M. (Tracy, CA), Simpson; Randall L. (Livermore, CA); Hrubesh, Lawrence W. (Pleasanton, CA)

2006-01-17T23:59:59.000Z

465

Zinc chlorins for artificial light-harvesting self-assemble into antiparallel stacks forming a microcrystalline solid-state material  

Science Journals Connector (OSTI)

...accomplish ultrafast energy transfer via pigment-pigment...molecular electronics or solar energy conversion (7...is more practical and economical to have a method to screen unlabeled compounds...contributions to the total energy for a single stack and...

Swapna Ganapathy; Sanchita Sengupta; Piotr K. Wawrzyniak; Valerie Huber; Francesco Buda; Ute Baumeister; Frank Würthner; Huub J. M. de Groot

2009-01-01T23:59:59.000Z

466

Aronson-021612 - Argonne National Laboratories, Materials Sicence Division  

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

Aronson-021612 Aronson-021612 MATERIALS SCIENCE COLLOQUIUM SPEAKER: Dr. Igor Aronson Materials Science Division Argonne National Laboratory TITLE: "Active Colloids: From Self-Assembled Swimmers to Simple Robots" DATE: Thursday, May 17, 2012 TIME: 11:00 a.m. PLACE: Building 212 / A-157 HOST: TBA Refreshments will be served at 10:45 a.m. ABSTRACT: Self-assembly, a natural tendency of simple building blocks to organize into complex architectures is a unique opportunity for contemporary materials science. In order to support structural complexity and functional diversity, self-assembled materials must actively consume energy and "live" out of equilibrium. We study a variety of simple active colloidal systems: from a suspension of swimming bacteria to a

467

Bridged polysilsesquioxanes: A molecular based approach for the synthesis of functional hybrid materials  

SciTech Connect

Bridged polysilsesquioxanes (BPS) are a family of hybrid organic-inorganic materials prepared by sol-gel polymerization of molecular building blocks that contain a variable organic component and at least two trifunctional silyl groups. The resulting xerogels and aerogels have physical and mechanical properties that are strongly influenced by the organic bridging group. This talk focuses on the synthesis of functional bridged polysilsesquioxanes. Incorporation of functional groups that respond to chemical, photochemical, or thermal stimuli can provide handles for modifying bulk morphology and/or provide function. These materials can find use as ion exchange media, chromatographic stationary phases, photoresists and high capacity selective chemical absorbents.

SHEA,KENNETH J.; LOY,DOUGLAS A.

2000-05-09T23:59:59.000Z

468

Stamped microbattery electrodes based on self-assembled M13 viruses  

Science Journals Connector (OSTI)

...in this study could enable economical small-scale patterning of viruses and virus-templated...Solid-state dye-sensitized solar cells combining a porous TiO2 film...Nanostructured materials for advanced energy conversion and storage devices . Nat Mater 4...Bacteriophage M13 chemistry Bioelectric Energy Sources virology Electrochemistry...

Ki Tae Nam; Ryan Wartena; Pil J. Yoo; Forrest W. Liau; Yun Jung Lee; Yet-Ming Chiang; Paula T. Hammond; Angela M. Belcher

2008-01-01T23:59:59.000Z

469

Structural Transformations in self-assembled Semiconductor Quantum Dots as inferred by Transmission Electron Microscopy  

E-Print Network (OSTI)

electronic and optoelectronic devices.1-3 ZnO is a promising material for UV optoelectronics due to its of the results have been widely reproduced or resulted in stable optoelectronic devices. p-type ZnO NWs have also

Moeck, Peter

470

Theory and experiment for one-dimensional directed self-assembly of nanoparticles  

E-Print Network (OSTI)

and Vakhtang Putkaradze Department of Mathematics, University of New Mexico, Albuquerque, New Mexico 87131 Deying Xia and S. R. J. Bruecka Center for High Technology Materials and Department of Electrical and Computer Engineering, University of New Mexico, Albuquerque, New Mexico 87106 Received 23 March 2005

New Mexico, University of

471

Encapsulation and Characterization of Proton-Bound Amine Homodimers in a Water Soluble, Self-Assembled Supramolecular Host  

SciTech Connect

Cyclic amines can be encapsulated in a water-soluble self-assembled supramolecular host upon protonation. The hydrogen bonding ability of the cyclic amines, as well as the reduced degrees of rotational freedom, allows for the formation of proton-bound homodimers inside of the assembly which are otherwise not observable in aqueous solution. The generality of homodimer formation was explored with small N-alkyl aziridines, azetidines, pyrrolidines and piperidines. Proton-bound homodimer formation is observed for N-alkylaziridines (R = methyl, isopropyl, tert-butyl), N-alkylazetidines (R = isopropyl, tertbutyl), and N-methylpyrrolidine. At high concentration, formation of a proton-bound homotrimer is observed in the case of N-methylaziridine. The homodimers stay intact inside the assembly over a large concentration range, thereby suggesting cooperative encapsulation. Both G3(MP2)B3 and G3B3 calculations of the proton-bound homodimers were used to investigate the enthalpy of the hydrogen bond in the proton-bound homodimers and suggest that the enthalpic gain upon formation of the proton-bound homodimers may drive guest encapsulation.

Pluth, Michael; Fiedler, Dorothea; Mugridge, Jeffrey; Bergman, Robert; Raymond, Kenneth

2008-10-01T23:59:59.000Z

472

Use of Self-Assembling Monolayers to Control Interface Bonding in a Model Study of Interfacial Fracture  

SciTech Connect

The relationships between the extent of interfacial bonding, energy dissipation mechanisms, and fracture toughness in a glassy adhesive/inorganic solid joint are not well understood. We address this subject with a model system involving an epoxy adhesive on a polished silicon wafer containing its native oxide. The extent of interfacial bonding, and the wetting behavior of the epoxy, is varied continuously using self-assembling monolayers (SAMs) of octadecyltrichlorosilane (ODTS). The epoxy interacts strongly with the bare silicon oxide surface, but forms only a very weak interface with the methylated tails of the ODTS monolayer. We examine the fracture behavior of such joints as a function of the coverage of ODTS in the napkin-ring geometry. Various characterization methods are applied to the ODTS-coated surface before application of the epoxy, and to both surfaces after fracture. The fracture data are discussed with respect to the wetting of the liquid epoxy on the ODTS-coated substrates, the locus of failure, and the energy dissipation mechanisms. Our goal is to understand how energy is dissipated during fracture as a function of interface strength.

Kent, M.S.; Matheson, A.; Reedy, E.D.; Yim, H.

1999-03-05T23:59:59.000Z

473

Poly(methyl methacrylate) as a self-assembled gate dielectric for graphene field-effect transistors  

SciTech Connect

We investigate poly(methyl methacrylate) (PMMA) as a low thermal budget organic gate dielectric for graphene field effect-transistors (GFETs) based on a simple process flow. We show that high temperature baking steps above the glass transition temperature (?130?°C) can leave a self-assembled, thin PMMA film on graphene, where we get a gate dielectric almost for “free” without additional atomic layer deposition type steps. Electrical characterization of GFETs with PMMA as a gate dielectric yields a dielectric constant of k?=?3.0. GFETs with thinner PMMA dielectrics have a lower dielectric constant due to decreased polarization arising from neutralization of dipoles and charged carriers as baking temperatures increase. The leakage through PMMA gate dielectric increases with decreasing dielectric thickness and increasing electric field. Unlike conventional high-k gate dielectrics, such low-k organic gate dielectrics are potentially attractive for devices such as the proposed Bilayer pseudoSpin Field-Effect Transistor or flexible high speed graphene electronics.

Sanne, A.; Movva, H. C. P.; Kang, S.; McClellan, C.; Corbet, C. M.; Banerjee, S. K. [Microelectronics Research Center, University of Texas, Austin, Texas 78758 (United States)

2014-02-24T23:59:59.000Z

474

Highly ordered nanocomposites via a monomer self-assembly in situ condensation approach  

DOE Patents (OSTI)

A method for synthesizing composites with architectural control on the nanometer scale is described. A polymerizable lyotropic liquid-crystalline monomer is used to form an inverse hexagonal phase in the presence of a second polymer precursor solution. The monomer system acts as an organic template, providing the underlying matrix and order of the composite system. Polymerization of the template in the presence of an optional cross-linking agent with retention of the liquid-crystalline order is carried out followed by a second polymerization of the second polymer precursor within the channels of the polymer template to provide an ordered nanocomposite material. 13 figs.

Gin, D.L.; Fischer, W.M.; Gray, D.H.; Smith, R.C.

1998-12-15T23:59:59.000Z

475

Highly ordered nanocomposites via a monomer self-assembly in situ condensation approach  

DOE Patents (OSTI)

A method for synthesizing composites with architectural control on the nanometer scale is described. A polymerizable lyotropic liquid-crystalline monomer is used to form an inverse hexagonal phase in the presence of a second polymer precursor solution. The monomer system acts as an organic template, providing the underlying matrix and order of the composite system. Polymerization of the template in the presence of an optional cross-linking agent with retention of the liquid-crystalline order is carried out followed by a second polymerization of the second polymer precursor within the channels of the polymer template to provide an ordered nanocomposite material.

Gin, Douglas L. (Moraga, CA); Fischer, Walter M. (Leoben, AT); Gray, David H. (El Cerrito, CA); Smith, Ryan C. (Berkeley, CA)

1998-01-01T23:59:59.000Z

476

Research Areas - Argonne National Laboratories, Materials Sicence Division  

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

http://www.msd.anl.gov/research-areas Sun, 12 Jan 2014 01:06:27 +0000 Joomla! 1.6 - Open Source Content Management en-gb Dynamics of Active Self-Assemble Materials http://www.msd.anl.gov/research-areas/dynamics-of-active-self-assemble-materials http://www.msd.anl.gov/research-areas/dynamics-of-active-self-assemble-materials krajniak@anl.gov (Ken Krajniak) Fri, 13 May 2011 17:17:28 +0000 Elastic Relaxation and Correlation of Local Strain Gradients with Ferroelectric Domains in (001) BiFeO3 Nanostructures http://www.msd.anl.gov/research-areas/elastic-relaxation-and-correlation-of-local-strain-gradients-with-ferroelectric-domains-in-001-bifeo3-nanostructures http://www.msd.anl.gov/research-areas/elastic-relaxation-and-correlation-of-local-strain-gradients-with-ferroelectric-domains-in-001-bifeo3-nanostructures

477

Self-Assembly of Hexanuclear Clusters of 4f and 5f Elements with Cation Specificity  

SciTech Connect

Six hexanuclear clusters of 4f and 5f elements were synthesized by room-temperature slow concentration experiments. Cerium(IV), thorium(IV), and plutonium(IV) each form two different hexanuclear clusters, among which the cerium and plutonium clusters are isotypic, whereas the thorium clusters show more diversity. The change in ionic radii of approximately 0.08 Å between these different metal ions tunes the cavity size so that NH{sub 4}{sup +} (1.48 Å) has the right dimensions to assemble the cerium and plutonium clusters, whereas Cs{sup +} (1.69 Å) is necessary to assemble the thorium clusters. If these cations are not used in the reactions, only amorphous material is obtained.

Diwu, J.; Good, Justin J.; DiStefano, Victoria H.; Albrecht-Schmitt, Thomas E.

2011-01-01T23:59:59.000Z

478

A solution NMR investigation into the impaired self-assembly properties of two murine amelogenins containing the point mutations T21?I or P41?T  

SciTech Connect

Amelogenesis imperfecta describes a group of inherited disorders that results in defective tooth enamel. Two disorders associated with human amelogenesis imperfecta are the point mutations T21?I or P40?T in amelogenin, the dominant protein present during the early stages of enamel biomineralization. The biophysical properties of wildtype murine amelogenin (M180) and two proteins containing the equivalent mutations in murine amelogenin, T21?I (M180-I) and P41?T (M180-T), were probed by NMR spectroscopy. At low protein concentration (0.1 mM), M180, M180-I, and M180-T are predomi- nately monomeric at pH 3.0 in 2% acetic acid and neither mutation produces a major structural change. Chemical shift perturbation studies as a function of protein (0.1–1.8 mM) or NaCl (0–400 mM) concentra- tions show that the mutations affect the self-association properties by causing self-assembly at lower protein or salt concentrations, relative to wildtype amelogenin, with the largest effect observed for M180-I. Under both conditions, the premature self-assembly is initiated near the N-terminus, providing further evidence for the importance of this region in the self-assembly process. The self-association of M180-I and M180-T at lower protein concentrations and lower ionic strengths than wildtype M180 may account for the clinical phenotypes of these mutations, defective enamel formation.

Buchko, Garry W.; Lin, Genyao; Tarasevich, Barbara J.; Shaw, Wendy J.

2013-08-26T23:59:59.000Z

479

Final report : LDRD project 79824 carbon nanotube sorting via DNA-directed self-assembly.  

SciTech Connect

Single-wall carbon nanotubes (SWNTs) have shown great promise in novel applications in molecular electronics, biohazard detection, and composite materials. Commercially synthesized nanotubes exhibit a wide dispersion of geometries and conductivities, and tend to aggregate. Hence the key to using these materials is the ability to solubilize and sort carbon nanotubes according to their geometric/electronic properties. One of the most effective dispersants is single-stranded DNA (ssDNA), but there are many outstanding questions regarding the interaction between nucleic acids and SWNTs. In this work we focus on the interactions of SWNTs with single monomers of nucleic acids, as a first step to answering these outstanding questions. We use atomistic molecular dynamics simulations to calculate the binding energy of six different nucleotide monophosphates (NMPs) to a (6,0) single-wall carbon nanotube in aqueous solution. We find that the binding energies are generally favorable, of the order of a few kcal/mol. The binding energies of the different NMPs were very similar in salt solution, whereas we found a range of binding energies for NMPs in pure water. The binding energies are sensitive to the details of the association of the sodium ions with the phosphate groups and also to the average conformations of the nucleotides. We use electronic structure (Density Functional Theory (DFT) and Moller-Plesset second order perturbation to uncorrelated Hartree Fock theory (MP2)) methods to complement the classical force field study. With judicious choices of DFT exchange correlation functionals, we find that DFT, MP2, and classical force field predictions are in qualitative and even quantitative agreement; all three methods should give reliable and valid predictions. However, in one important case, the interactions between ions and metallic carbon nanotubes--the SWNT polarization-induced affinity for ions, neglected in most classical force field studies, is found to be extremely large (on the order of electron volts) and may have important consequences for various SWNT applications. Finally, the adsorption of NMPs onto single-walled carbon nanotubes were studied experimentally. The nanotubes were sonicated in the presence of the nucleotides at various weight fractions and centrifuged before examining the ultraviolet absorbance of the resulting supernatant. A distinct Langmuir adsorption isotherm was obtained for each nucleotide. All of the nucleotides differ in their saturation value as well as their initial slope, which we attribute to differences both in nucleotide structure and in the binding ability of different types or clusters of tubes. Results from this simple system provide insights toward development of dispersion and separation methods for nanotubes: strongly binding nucleotides are likely to help disperse, whereas weaker ones may provide selectivity that may be beneficial to a separation process.

Robinson, David B; Leung, Kevin; Rempe, Susan B.; Dossa, Paul D.; Frischknecht, Amalie Lucile; Martin, Marcus Gary

2007-10-01T23:59:59.000Z

480

Self-Assembly of Charged Amphiphilic Diblock Copolymers with Insoluble Blocks of Decreasing Hydrophobicity: From Kinetically Frozen Colloids to Macrosurfactants  

SciTech Connect

We have investigated the self-assembly properties in aqueous solution of amphiphilic diblock copolymers with insoluble blocks of different hydrophobicity and demonstrated that the condition to obtain dynamic micelles is to design samples with insoluble blocks of low enough hydrophobicity. We focus here on results with new water-soluble amphiphilic diblock copolymers poly(diethyleneglycol ethylether acrylate)-b-poly(acrylic acid), or PDEGA-b-PAA. The physical characteristics of PDEGA-b-PAA micelles at high ionization have been determined by small angle neutron scattering (SANS). We show that PDEGA-b-PAA samples form micelles at thermodynamic equilibrium. The critical micelle concentrations (CMCs) decrease strongly with ionic strength and temperature due to a solvent quality decrease for, respectively, the corona and the core. This behavior of reversible aggregation is remarkable as compared to the behavior of kinetically frozen aggregation that has been widely observed with samples of similar architecture and different hydrophobic blocks, for example, poly(styrene)-b-poly(acrylic acid), PS-b-PAA, and poly(butyl acrylate)-b-poly(acrylic acid), PBA-b-PAA. We have measured the interfacial tension between water and the homopolymers PDEGA and PBA at, respectively, 3 and 20 mN/m at room temperature, which permits one to estimate the energy cost to extract a unimer from a micelle. The results are consistent with a micelle association that is fast for PDEGA-b-PAA and kinetically frozen PBA-b-PAA. Hence, PDEGA-b-PAA samples form a new system of synthetic charged macrosurfactant with unique properties of fast dynamic association, tunable charge, and water solubility even at temperatures and NaCl concentrations as high as 65 C and 1 M.

M Jacquin; P Muller; H Cottet; O Theodoly

2011-12-31T23:59:59.000Z

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481

Localized Si enrichment in coherent self-assembled Ge islands grown by molecular beam epitaxy on (001)Si single crystal  

SciTech Connect

Transmission electron microscopy (TEM), atomic force microscopy, and Rutherford backscattering spectrometry (RBS) have been used to investigate the morphology, structure, and composition of self-assembled Ge islands grown on Si (001) substrates by molecular beam epitaxy (MBE) at different temperatures. Increasing the temperature from 550 Degree-Sign C to 700 Degree-Sign C causes progressive size and shape uniformity, accompanied by enhanced Si-Ge intermixing within the islands and their wetting layer. Elemental maps obtained by energy filtered-TEM (EF-TEM) clearly show pronounced Si concentration not only in correspondence of island base perimeters, but also along their curved surface boundaries. This phenomenon is strengthened by an increase of the growth temperature, being practically negligible at 550 Degree-Sign C, while very remarkable already at 650 Degree-Sign C. The resulting island shape is affected, since this localized Si enrichment not only provides strain relief near their highly stressed base perimeters but it also influences the cluster surface energy by effective alloying, so as to form Si-enriched SiGe interfaces. Further increase to 700 Degree-Sign C causes a shape transition where more homogenous Si-Ge concentration profiles are observed. The crucial role played by local 'flattened' alloyed clusters, similar to truncated pyramids with larger bases and enhanced Si enrichment at coherently stressed interfaces, has been further clarified by EF-TEM analysis of a multi-layered Ge/Si structure containing stacked Ge islands grown at 650 Degree-Sign C. Sharp accumulation of Si has been here observed not only in proximity of the uncapped island surface in the topmost layer but also at the buried Ge/Si interfaces and even in the core of such capped Ge islands.

Valvo, M. [Dipartimento di Fisica e Astronomia, Universita di Catania, Via S. Sofia 64, I-95127 Catania (Italy); Bongiorno, C.; Giannazzo, F. [IMM-CNR, VIII strada 5, 95121 Catania (Italy); Terrasi, A. [Dipartimento di Fisica e Astronomia, Universita di Catania, Via S. Sofia 64, I-95127 Catania (Italy); MATIS IMM-CNR UOS Catania (Universita), via S. Sofia 64, 95123 Catania (Italy)

2013-01-21T23:59:59.000Z

482

Solution Synthesis and Processing of PZT Materials for Neutron Generator Applications  

SciTech Connect

A new solution synthesis route has been developed for the preparation of lead-based ferroelectric materials (patent filed). The process produces controlled stoichiometry precursor powders by non-aqueous precipitation. For a given ferroelectric material to be prepared, a metal acetate/alkoxide solution containing constituent metal species in the appropriate ratio is mixed with an oxalic acid/n-propanol precipitant solution. An oxalate coprecipitate is instantly fonned upon mixing that quantitatively removes the metals from solution. Most of the process development was focused on the synthesis and processing of niobium-substituted lead zirconate titanate with a Zr-to-Ti ratio of 95:5 (PNZT 95/5) that has an application in neutron generator power supplies. The process was scaled to produce 1.6 kg of the PNZT 95/5 powder using either a sen-ii-batch or a continuous precipitation scheme. Several of the PNZT 95/5 powder lots were processed into ceramic slug form. The slugs in turn were processed into components and characterized. The physical properties and electrical performance (including explosive functional testing of the components met the requirements set for the neutron generator application. Also, it has been demonstrated that the process is highly reproducible with respect to the properties of the powders it produces and the properties of the ceramics prepared from its powders. The work described in this report was funded by Sandia's Laboratory Directed Research and Development Program.

Anderson, M.A.; Ewsuk, K.G.; Montoya, T.V.; Moore, R.H.; Sipola, D.L.; Tuttle, B.A.; Voigt, J.A.

1998-12-01T23:59:59.000Z

483

Composition-tailored synthesis of gradient transition metal precursor particles for lithium-ion battery cathode materials.  

SciTech Connect

We report the tailored synthesis of particles with internal gradients in transition metal composition aided by the use of a general process model. Tailored synthesis of transition metal particles was achieved using a coprecipitation reaction with tunable control over the process conditions. Gradients in the internal composition of the particles was monitored and confirmed experimentally by analysis of particles collected during regularly timed intervals. Particles collected from the reactor at the end of the process were used as the precursor material for the solid-state synthesis of Li{sub 1.2}(Mn{sub 0.62}Ni{sub 0.38}){sub 0.8}O{sub 2}, which was electrochemically evaluated as the active cathode material in a lithium battery. The Li{sub 1.2}(Mn{sub 0.62}Ni{sub 0.38}){sub 0.8}O{sub 2} material was the first example of a structurally integrated multiphase material with a tailored internal gradient in relative transition metal composition as the active cathode material in a lithium-ion battery. We believe our general synthesis strategy may be applied to produce a variety of new cathode materials with tunable interior, surface, and overall relative transition metal compositions.

Koenig, G. M.; Belharouak, I.; Deng, H.; Amine, K.; Sun, Y. K. (Chemical Sciences and Engineering Division)

2011-04-12T23:59:59.000Z

484

Synthesis and characterization of specific electrode materials for solar cells and supercapacitors  

Science Journals Connector (OSTI)

In this paper a brief overview of research in the field of electrode materials for solar cells and supercapacitors is presented which the authors dealt with for years. In addition to the standard electrode material (graphite and silicon in supercapacitor with solar cells) different materials were examined particularly oxides and sulfides of copper. Copper (I) oxide or cuprous oxide is an oxide semiconductor which is used as the anodic material in the form of thin film in lithium batteries and solar cells. The cathodic process of synthesis of cuprous oxide thin film is carried out in a potentiostatic mode from the organic electrolyte. The electrochemical characterization was carried out by cyclic voltammetry. The electro deposition techniques are particularly well suited for the deposition of single elements but it is also possible to carry out simultaneous depositions of several elements and syntheses of well-defined alternating layers of metals and oxides with thicknesses down to a few nanometers. Electrochemical characteristics of covellite (CuS) are of importance from flotation and metallurgical point of view due to its potential application in solid state solar cells and in photocatalytic reactions. Also the compound CuS appears as an intermediary product or a final product in electrochemical oxidation reactions of chalcocite (Cu 2S) which exhibits supercapacitor characteristics. Natural copper mineral covellite has been investigated in inorganic sulfate acid electrolytes as well as in strong alkaline electrolyte. Different electrochemical methods (galvanostatic potentiostatic cyclic voltammetry and electrochemical impedance spectroscopy) have been used in these investigations.

2013-01-01T23:59:59.000Z

485

One-Step Synthesis of Graphene/Polypyrrole Nanofiber Composites as Cathode Material for a Biocompatible Zinc/Polymer Battery  

Science Journals Connector (OSTI)

One-Step Synthesis of Graphene/Polypyrrole Nanofiber Composites as Cathode Material for a Biocompatible Zinc/Polymer Battery ... Miniature or flexible aqueous metal–air batteries are currently considered to be one of the most promising candidates for powering mIMDs, which mainly include the zinc–air battery system and the magnesium–air battery system. ...

Sha Li; Kewei Shu; Chen Zhao; Caiyun Wang; Zaiping Guo; Gordon Wallace; Hua Kun Liu

2014-09-08T23:59:59.000Z

486

Journal of Hazardous Materials B132 (2006) 244252 Zeolite synthesis from paper sludge ash at low temperature  

E-Print Network (OSTI)

Journal of Hazardous Materials B132 (2006) 244­252 Zeolite synthesis from paper sludge ash at low 2005 Available online 4 November 2005 Abstract Paper sludge ash was partially converted into zeolites by reaction with 3 M NaOH solution at 90 C for 24 h. The paper sludge ash had a low abundance of Si

Downs, Robert T.

487

Self assembly of CdSe/ZnS quantum dots for organic/inorganic light emitting devices for the next generation display technology  

Science Journals Connector (OSTI)

We have investigated the effect of quantum dot (QD) concentrations, spin speed and temperature on the self assembly of CdSe/ZnS QDs on substrate for the optimisation of QDs used in organic light-emitting devices (OLEDs) applications. The atomic force microscopy (AFM) results showed that surface morphology and coverage are varied with different process parameters. There is also a tendency for the formation of aggregates/islands on a smooth substrate that could be caused by spinodal phase separation. The uniform distribution of QDs with controllable density was achieved using the conventional spin-coating method. We fabricated and investigated the effect of CdSe/ZnS QD concentrations on the self-assembly hybrid organic/inorganic light emitting diodes (QD-OLEDs) for the tuning of performance. There was a QD threshold concentration below which there was no emission from the QDs. The estimated QD concentration was around 9 × 1011 cm?2 for the best performance of QD-OLED. The annealing of QD-OLED increased the QD emission about three times. No wavelength shift was observed in the electroluminescence spectra from the QD before and after the annealing of QD-OLEDs. The mechanism of this emission improvement is discussed.

A. Uddin; C.C. Teo

2009-01-01T23:59:59.000Z

488

Designed amyloid fibers as materials for selective carbon dioxide capture  

E-Print Network (OSTI)

Designed amyloid fibers as materials for selective carbon dioxide capture Dan Lia,b,c,1 , Hiroyasu demonstrate that amyloids, self-assembling protein fibers, are effective for selective carbon dioxide capture formation rate is fast enough to capture carbon dioxide by dynamic separation, undiminished by the presence

489

Measurement of electro-optic coefficients of 1.3 lm self-assembled InAs=GaAs  

E-Print Network (OSTI)

and arsine as the source materials at a total pressure of 60 Torr. Disilane and carbontetrachloride are used

New Mexico, University of

490

Self-assembly of Ni nanocrystals on HfO{sub 2} and N-assisted Ni confinement for nonvolatile memory application  

SciTech Connect

We demonstrate memory property using Ni nanocrystals with mean diameter of 9 nm embedded in HfO{sub 2} high-k dielectric that are formed via a self-assembly process by sputtering and rapid thermal annealing. X-ray photoelectron spectroscopy shows that Ni penetrates into the 5 nm HfO{sub 2} after high temperature annealing above 800 deg. C in N{sub 2}. However, the diffusion is suppressed by N incorporation into HfO{sub 2} by NH{sub 3} annealing. Metal-oxide-semiconductor structures were fabricated with Ni nanocrystals embedded in HfO{sub 2}. An additional counterclockwise hysteresis of 2.1 V due to the charge trapping properties of the Ni nanocrystals was observed from a {+-}5 V sweep during capacitance-voltage electrical measurement.

Tan, Zerlinda; Samanta, S.K.; Yoo, Won Jong; Lee, Sungjoo [Silicon Nano Device Laboratory, Department of Electrical and Computer Engineering, National University of Singapore, 4 Engineering Drive 3, Singapore 117576 (Singapore)

2005-01-03T23:59:59.000Z

491

Ionothermal synthesis of the mixed-anion material, Ba{sub 3}Cl{sub 4}CO{sub 3}  

SciTech Connect

A low-temperature ionothermal method for the facile synthesis of the halide carbonate, Ba{sub 3}Cl{sub 4}CO{sub 3}, in single-crystalline form has been developed. This has enabled the first determination of the crystal structure of this material to be carried out. Analysis of single-crystal X-ray diffraction data indicates that barium chloride carbonate crystallises in the orthorhombic space group Pnma (Z=4), with a=8.4074(11), b=9.5886(12), c=12.4833(15) A (R{sub w}=0.0392). It exhibits a complex structure in which a three-dimensional network is formed from cross-linking of chains of anion-centred octahedra that share faces. - Graphical Abstract: Ionothermal synthesis has provided single crystals of the mixed-anion material barium chloride carbonate, enabling the first determination of the complex crystal structure of this phase to be performed.

Leyva-Bailen, Patricia; Vaqueiro, Paz [Department of Chemistry, Heriot-Watt University, Edinburgh EH14 4AS (United Kingdom); Powell, Anthony V., E-mail: A.V.Powell@hw.ac.u [Department of Chemistry, Heriot-Watt University, Edinburgh EH14 4AS (United Kingdom)

2009-09-15T23:59:59.000Z

492

In situ observation of self-assembled Fe{sub 13}Ge{sub 8} nanowires growth on anisotropic Ge (1 1 0) surface  

SciTech Connect

Highlights: Black-Right-Pointing-Pointer Epitaxial Fe{sub 13}Ge{sub 8} nanowries growth and shape evolution on Ge (1 1 0) studied by in situ UHV-TEM. Black-Right-Pointing-Pointer Single type of morphology and unique orientation of nanowires formed at elevated temperatures. Black-Right-Pointing-Pointer Uniform control of the nanowires morphology at different temperatures can be succeeded. -- Abstract: Self-assembled iron germanide nanowires (NWs) were grown by directly depositing Fe onto a Ge (1 1 0) substrate, in an in situ ultra-high vacuum transmission electron microscope from 430 to 500 Degree-Sign C. All observed NWs had a similar length/width aspect ratio ({approx}8:1) at all deposition temperatures, as well as the same elongation orientation with respect to the underlying Ge (1 1 0) substrate. The growth dynamics was investigated by real time observations of NWs growth at elevated temperatures. It is elucidated that the formation of NWs in similar shape at all deposited temperatures is attributed to the similar activation energy barriers in length and width of NWs, which can result in the constant growth rate independent of growth temperatures. Furthermore, the difference in pre-exponential factor along the length and width of growing islands arose due to the anisotropic constraint of the Ge (1 1 0) substrate, leading to the unique elongation of NWs. This growth dynamics suggests the possibility of uniform control of the morphology of self-assembled NWs, as well as other morphologies of bottom-up fabricated devices, at different deposition temperatures.

Li, Zhi-Peng, E-mail: LI.Zhipeng@nims.go.jp [Department of Physics, National University of Singapore, 2 Science Drive 3, S117542 (Singapore) [Department of Physics, National University of Singapore, 2 Science Drive 3, S117542 (Singapore); Global Research Center for Environment and Energy based on Nanomaterials Science, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044 (Japan); Tok, Engsoon [Department of Physics, National University of Singapore, 2 Science Drive 3, S117542 (Singapore)] [Department of Physics, National University of Singapore, 2 Science Drive 3, S117542 (Singapore); Foo, Yonglim [Institute of Materials Research and Engineering, 3 Research Link, S117602 (Singapore)] [Institute of Materials Research and Engineering, 3 Research Link, S117602 (Singapore)

2012-02-15T23:59:59.000Z

493

New frontier in thin film epitaxy and nanostructured materials  

Science Journals Connector (OSTI)

Nanomaterials hold the key to the success of nanotechnology. This review starts with a new paradigm for thin film growth based upon matching of integral multiples of lattice planes across the film-substrate interface. This paradigm of domain matching epitaxy (DME) unifies small as well as large misfit systems utilising the concept of systematic domain variation. By controlling the kinetics of clustering and energetics of interfaces, it is possible to obtain nanoclusters of uniform size and create novel nanostructured materials by design, where relative orientation with respect to matrix can be controlled by DME. In nanostructured materials with unit dimensions 1â??100 nm, science and processing challenges include self-assembly processing, control of interfacial atoms and energetics, quantum confinement issues, nanoscale structure-property correlations. In addition, metastability of interfaces should be controlled for reliability in manufacturing of nanosystems. This paper presents fundamentals of synthesis and processing of nanomaterials, role of interfaces, nanoscale characterisation to establish atomic structure-property correlations and modelling to create novel nanostructured structural, magnetic, photonic and electronic systems with unique and improved properties for next-generation systems with new functionality.

Jagdish Narayan

2009-01-01T23:59:59.000Z

494

Potential applications of nanostructured materials in nuclear waste management.  

SciTech Connect

This report summarizes the results obtained from a Laboratory Directed Research & Development (LDRD) project entitled 'Investigation of Potential Applications of Self-Assembled Nanostructured Materials in Nuclear Waste Management'. The objectives of this project are to (1) provide a mechanistic understanding of the control of nanometer-scale structures on the ion sorption capability of materials and (2) develop appropriate engineering approaches to improving material properties based on such an understanding.

Braterman, Paul S. (The University of North Texas, Denton, TX); Phol, Phillip Isabio; Xu, Zhi-Ping (The University of North Texas, Denton, TX); Brinker, C. Jeffrey; Yang, Yi (University of New Mexico, Albuquerque, NM); Bryan, Charles R.; Yu, Kui; Xu, Huifang (University of New Mexico, Albuquerque, NM); Wang, Yifeng; Gao, Huizhen

2003-09-01T23:59:59.000Z

495

Complementary Chemistry and Matched Materials | Department of Energy  

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

Complementary Chemistry and Matched Materials Complementary Chemistry and Matched Materials Complementary Chemistry and Matched Materials November 15, 2013 - 1:45pm Addthis DNA linkers allow different kinds of nanoparticles to self-assemble and form relatively large-scale nanocomposite arrays. This approach allows for mixing and matching components for the design of multifunctional materials. | Image courtesy of Brookhaven National Laboratory. DNA linkers allow different kinds of nanoparticles to self-assemble and form relatively large-scale nanocomposite arrays. This approach allows for mixing and matching components for the design of multifunctional materials. | Image courtesy of Brookhaven National Laboratory. Charles Rousseaux Charles Rousseaux Senior Writer, Office of Science What are the key facts?

496

Orthogonal Labeling of M13 Minor Capsid Proteins with DNA to Self-Assemble End-to-End Multiphage Structures  

E-Print Network (OSTI)

M13 bacteriophage has been used as a scaffold to organize materials for various applications. Building more complex multiphage devices requires precise control of interactions between the M13 capsid proteins. Toward this ...

Hess, Gaelen T.

497

Application of the SelfAssembled Monolayer (SAM) Model to Dithio phosphate and Dithiocarbamate Engine Wear Inhibitors  

E-Print Network (OSTI)

and Dithiocarbamate Engine Wear Inhibitors Yanhua Zhou, a Shaoyi Jiang, #;a Tahir C¸ aâ??gin, a Elaine S. Yamaguchi, b Rawls Frazier, b Andrew Ho, b Yongchun Tang, c and William A. Goddard III \\Lambda;a a Materials, California Institute of Technology, Pasadena, California 91125 b Chevron Chemical Company, Oronite Global

Ã?agin, Tahir

498

Self-Assembled Nanometer Lamellae of Thermoelectric PbTe and Sb2Te3 with Epitaxy-like Interfaces  

E-Print Network (OSTI)

coefficient, the electrical conductivity, and the thermal conductivity. Materials investigated and optimized and thermal contact resistances. Such losses could be avoided if nanostructured thermoelectric elements could. Such an approach is justified by the observation that the thermal conductivity reductions responsible for high z

499

Preparation of carbon coated MoS2 flower-like nanostructure with self-assembled nanosheets as  

E-Print Network (OSTI)

candidate as an anode material for lithium-ion batteries. 1. Introduction Battery energy storage-performance lithium-ion battery anodes Shan Hu,ab Wen Chen,*a Jing Zhou,a Fei Yin,c Evan Uchaker,b Qifeng Zhangb as high as 672 mA h gÃ?1 at 10 A gÃ?1 with nearly 100% coulombic efficiency. The good electrochemical

Cao, Guozhong

500

Synthesis and characterization of covalently-linked dendrimer bioconjugates and the non-covalent self-assembly of streptavidin-based megamers  

E-Print Network (OSTI)

This work details the attachment of dendrimers to proteins, peptides and single stranded DNA (ssDNA). Dendrimers based on melamine satisfy many of the synthetic demands in the field of bioconjugate chemistry including: monodispersity, synthetic...

McLean, Megan Elizabeth

2005-02-17T23:59:59.000Z