National Library of Energy BETA

Sample records for width width item

  1. Pulse width modulation inverter with battery charger

    DOE Patents [OSTI]

    Slicker, James M.

    1985-01-01

    An inverter is connected between a source of DC power and a three-phase AC induction motor, and a microprocessor-based circuit controls the inverter using pulse width modulation techniques. In the disclosed method of pulse width modulation, both edges of each pulse of a carrier pulse train are equally modulated by a time proportional to sin .theta., where .theta. is the angular displacement of the pulse center at the motor stator frequency from a fixed reference point on the carrier waveform. The carrier waveform frequency is a multiple of the motor stator frequency. The modulated pulse train is then applied to each of the motor phase inputs with respective phase shifts of 120.degree. at the stator frequency. Switching control commands for electronic switches in the inverter are stored in a random access memory (RAM) and the locations of the RAM are successively read out in a cyclic manner, each bit of a given RAM location controlling a respective phase input of the motor. The DC power source preferably comprises rechargeable batteries and all but one of the electronic switches in the inverter can be disabled, the remaining electronic switch being part of a "flyback" DC-DC converter circuit for recharging the battery.

  2. Global synchronization of parallel processors using clock pulse width modulation

    DOE Patents [OSTI]

    Chen, Dong; Ellavsky, Matthew R.; Franke, Ross L.; Gara, Alan; Gooding, Thomas M.; Haring, Rudolf A.; Jeanson, Mark J.; Kopcsay, Gerard V.; Liebsch, Thomas A.; Littrell, Daniel; Ohmacht, Martin; Reed, Don D.; Schenck, Brandon E.; Swetz, Richard A.

    2013-04-02

    A circuit generates a global clock signal with a pulse width modification to synchronize processors in a parallel computing system. The circuit may include a hardware module and a clock splitter. The hardware module may generate a clock signal and performs a pulse width modification on the clock signal. The pulse width modification changes a pulse width within a clock period in the clock signal. The clock splitter may distribute the pulse width modified clock signal to a plurality of processors in the parallel computing system.

  3. Molecular resonance phenomena. [Calculation of resonance widths

    SciTech Connect (OSTI)

    Hazi, A.U.

    1980-01-01

    It is attempted to show that the Stieltjes-moment-theory provides a practical and a reasonably accurate method for calculating the widths of molecular resonances. The method seems to possess a number of advantages for molecular applications, since it avoids the explicit construction of continuum wavefunctions. It is very simple to implement the technique numerically, because it requires only existing bound-state electronic structure codes. Through the use of configuration interaction techniques, many-electron correlation and polarization effects can be included in the description of both the resonance and the non-resonant background continuum. To illustrate the utility and the accuracy of the Stieltjes-moment-theory technique, used in conjunction with configuration interaction (CI) wave functions, recent applications to the /sup 1/..sigma../sub u/(1sigma/sub u/ 2sigma/sub g/) autoionizing resonance state of H/sub 2/ and the well known /sup 2/PI/sub g/ state of N/sub 2//sup -/ are discussed. The choices of the one-electron basis sets and the types of many-electron configurations appropriate for these two cases are described. Also, guidelines for the selection of the projection operators defining the resonant and non-resonant subspaces in the case of both Feshbach and shape-resonances are given. The numerical results indicate that the Stieltjes-moment-theory technique, which employs L/sup 2/ basis functions exclusively, produces as accurate resonance parameters as can be extracted from direct electron-molecule scattering calculations, provided approximately the same approximations are used to describe important physical effects such as target polarization. Furthermore the method provides sufficiently accurate fixed-nuclei electronic resonance parameters to be used in ab initio calculation of resonant vibrational excitation cross sections. (WHK)

  4. EFFECTS OF SEAT WIDTH ON DEVELOPMENT OF ADHESIONS IN STAINLESS...

    Office of Scientific and Technical Information (OSTI)

    STEEL TRIM SPRING OPERATED PRESSURE RELIEF VALVES Citation Details In-Document Search Title: EFFECTS OF SEAT WIDTH ON DEVELOPMENT OF ADHESIONS IN STAINLESS STEEL TRIM ...

  5. Numerical simulations for width fluctuations in compound elastic...

    Office of Scientific and Technical Information (OSTI)

    The statistical theories - the Hauser-Feshbach model with the width fluctuation correction ... in the fast energy region, hence the statistical model codes are essential for the ...

  6. Optical waveguide device with an adiabatically-varying width

    DOE Patents [OSTI]

    Watts; Michael R. , Nielson; Gregory N.

    2011-05-10

    Optical waveguide devices are disclosed which utilize an optical waveguide having a waveguide bend therein with a width that varies adiabatically between a minimum value and a maximum value of the width. One or more connecting members can be attached to the waveguide bend near the maximum value of the width thereof to support the waveguide bend or to supply electrical power to an impurity-doped region located within the waveguide bend near the maximum value of the width. The impurity-doped region can form an electrical heater or a semiconductor junction which can be activated with a voltage to provide a variable optical path length in the optical waveguide. The optical waveguide devices can be used to form a tunable interferometer (e.g. a Mach-Zehnder interferometer) which can be used for optical modulation or switching. The optical waveguide devices can also be used to form an optical delay line.

  7. Capacitor charging FET switcher with controller to adjust pulse width

    DOE Patents [OSTI]

    Mihalka, Alex M.

    1986-01-01

    A switching power supply includes an FET full bridge, a controller to drive the FETs, a programmable controller to dynamically control final output current by adjusting pulse width, and a variety of protective systems, including an overcurrent latch for current control. Power MOSFETS are switched at a variable frequency from 20-50 kHz to charge a capacitor load from 0 to 6 kV. A ferrite transformer steps up the DC input. The transformer primary is a full bridge configuration with the FET switches and the secondary is fed into a high voltage full wave rectifier whose output is connected directly to the energy storage capacitor. The peak current is held constant by varying the pulse width using predetermined timing resistors and counting pulses. The pulse width is increased as the capacitor charges to maintain peak current. A digital ripple counter counts pulses, and after the desired number is reached, an up-counter is clocked. The up-counter output is decoded to choose among different resistors used to discharge a timing capacitor, thereby determining the pulse width. A current latch shuts down the supply on overcurrent due to either excessive pulse width causing transformer saturation or a major bridge fault, i.e., FET or transformer failure, or failure of the drive circuitry.

  8. Fjords in viscous fingering: selection of width and opening scale

    SciTech Connect (OSTI)

    Mineev-weinstein, Mark; Ristroph, Leif; Thrasher, Matthew; Swinney, Harry

    2008-01-01

    Our experiments on viscous fingering of air into oil contained between closely spaced plates reveal two selection rules for the fjords of oil that separate fingers of air. (Fjords are the building blocks of solutions of the zero-surface-tension Laplacian growth equation.) Experiments in rectangular and circular geometries yield fjords with base widths {lambda}{sub c}/2, where {lambda}{sub c} is the most unstable wavelength from a linear stability analysis. Further, fjords open at an angle of 8.0{sup o}{+-}1.0{sup o}. These selection rules hold for a wide range of pumping rates and fjord lengths, widths, and directions.

  9. Width effects in transonic flow over a rectangular cavity

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Beresh, Steven J.; Wagner, Justin L.; Henfling, John F.; Spillers, Russell Wayne; Pruett, Brian Owen Matthew

    2015-07-24

    A previous experiment by the present authors studied the flow over a finite-width rectangular cavity at freestream Mach numbers 1.5–2.5. In addition, this investigation considered the influence of three-dimensional geometry that is not replicated by simplified cavities that extend across the entire wind-tunnel test section. The latter configurations have the attraction of easy optical access into the depths of the cavity, but they do not reproduce effects upon the turbulent structures and acoustic modes due to the length-to-width ratio, which is becoming recognized as an important parameter describing the nature of the flow within narrower cavities.

  10. Mass and Width of the Lowest Resonance in QCD

    SciTech Connect (OSTI)

    Caprini, I.; Colangelo, G.; Leutwyler, H.

    2006-04-07

    We demonstrate that near the threshold, the {pi}{pi} scattering amplitude contains a pole with the quantum numbers of the vacuum- commonly referred to as the {sigma} - and determine its mass and width within small uncertainties. Our derivation does not involve models or parametrizations but relies on a straightforward calculation based on the Roy equation for the isoscalar S wave.

  11. Improved determination of the width of the top quark

    SciTech Connect (OSTI)

    Abazov V. M.; Abbott B.; Acharya B. S.; Adams M.; Adams T.; Alexeev G. D.; Alkhazov G.; Alton A.; Alverson G.; Aoki M.; Askew A.; Asman B.; Atkins S.; Atramentov O.; Augsten K.; Avila C.; BackusMayes J.; Badaud F.; Bagby L.; Baldin B.; Bandurin D. V.; Banerjee S.; Barberis E.; Baringer P.; Barreto J.; Bartlett J. F.; Bassler U.; Bazterra V.; Bean A.; Begalli M.; Belanger-Champagne C.; Bellantoni L.; Beri S. B.; Bernardi G.; Bernhard R.; Bertram I.; Besancon M.; Beuselinck R.; Bezzubov V. A.; Bhat P. C.; Bhatia S.; Bhatnagar V.; Blazey G.; Blessing S.; Bloom K.; Boehnlein A.; Boline D.; Boos E. E.; Borissov G.; Bose T.; Brandt A.; Brandt O.; Brock R.; Brooijmans G.; Bross A.; Brown D.; Brown J.; Bu X. B.; Buehler M.; Buescher V.; Bunichev V.; Burdin S.; Burnett T. H.; Buszello C. P.; Calpas B.; Camacho-Perez E.; Carrasco-Lizarraga M. A.; Casey C. K.; Castilla-Valdez H.; Chakrabarti S.; Chakraborty D.; Chan M.; Chandra A.; Chapon E.; Chen G.; Chevalier-Thery S.; Cho D. K.; Cho S. W.; Choi S.; Choudhary B.; Cihangir S.; Claes D.; Clutter J.; Cooke M.; Cooper W. E.; Corcoran M.; Couderc F.; Cousinou M. -C.; Croc A.; Cutts D.; Das A.; Davies G.; de Jong S. J.; De La Cruz-Burelo E.; Deliot F.; Demina R.; Denisov D.; Denisov S. P.; Desai S.; Deterre C.; DeVaughan K.; Diehl H. T.; Diesburg M.; Ding P. F.; Dominguez A.; Dorland T.; Dubey A.; Dudko L. V.; Duggan D.; Duperrin A.; Dutt S.; Dyshkant A.; Eads M.; Edmunds D.; Ellison J.; Elvira V. D.; Enari Y.; Evans H.; Evdokimov A.; Evdokimov V. N.; Facini G.; Ferbel T.; Fiedler F.; Filthaut F.; Fisher W.; Fisk H. E.; Fortner M.; Fox H.; Fuess S.; Garcia-Bellido A.; Garcia-Guerra G. A.; Gavrilov V.; Gay P.; Geng W.; Gerbaudo D.; Gerber C. E.; Gershtein Y.; Ginther G.; Golovanov G.; Goussiou A.; Graf C. P.; Grannis P. D.; Greder S.; Greenlee H.; Greenwood Z. D.; Gregores E. M.; Grenier G.; Gris Ph.; Grivaz J. -F.; Grohsjean A.; Gruenendahl S.; Gruenewald M. W.; Guillemin T.; Gutierrez G.; Gutierrez P.; Haas A.; Hagopian S.; Haley J.; Han L.; Harder K.; Harel A.; Hauptman J. M.; Hays J.; Head T.; Hebbeker T.; Hedin D.; Hegab H.; Heinson A. P.; Heintz U.; Hensel C.; La Cruz I. Heredia-De; Herner K.; Hesketh G.; Hildreth M. D.; Hirosky R.; Hoang T.; Hobbs J. D.; Hoeneisen B.; Hohlfeld M.; Hubacek Z.; Hynek V.; Iashvili I.; Ilchenko Y.; Illingworth R.; Ito A. S.; Jabeen S.; Jaffre M.; Jamin D.; Jayasinghe A.; Jesik R.; Johns K.; Johnson M.; Jonckheere A.; Jonsson P.; Joshi J.; Jung A. W.; Juste A.; Kaadze K.; Kajfasz E.; Karmanov D.; Kasper P. A.; Katsanos I.; Kehoe R.; Kermiche S.; Khalatyan N.; Khanov A.; Kharchilava A.; Kharzheev Y. N.; Kohli J. M.; Kozelov A. V.; Kraus J.; Kulikov S.; Kumar A.; Kupco A.; Kurca T.; Kuzmin V. A.; Lammers S.; Landsberg G.; Lebrun P.; Lee H. S.; Lee S. W.; Lee W. M.; Lellouch J.; Li H.; Li L.; Li Q. Z.; Lietti S. M.; Lim J. K.; Lincoln D.; Linnemann J.; Lipaev V. V.; Lipton R.; Liu Y.; Lobodenko A.; Lokajicek M.; de Sa R. Lopes; Lubatti H. J.; Luna-Garcia R.; Lyon A. L.; Maciel A. K. A.; Mackin D.; Madar R.; Magana-Villalba R.; Malik S.; Malyshev V. L.; Maravin Y.; Martinez-Ortega J.; McCarthy R.; McGivern C. L.; Meijer M. M.; Melnitchouk A.; Menezes D.; Mercadante P. G.; Merkin M.; et al.

    2012-05-04

    We present an improved determination of the total width of the top quark, {Gamma}{sub t}, using 5.4 fb{sup -1} of integrated luminosity collected by the D0 Collaboration at the Tevatron p{bar p} Collider. The total width {Gamma}{sub t} is extracted from the partial decay width {Gamma}(t {yields} Wb) and the branching fraction {Beta}(t {yields} Wb). {Gamma}(t {yields} Wb) is obtained from the t-channel single top-quark production cross section and {Beta}(t {yields} Wb) is measured in t{bar t} events. For a top mass of 172.5 GeV, the resulting width is {Gamma}{sub t} = 2.00{sub -0.43}{sup +0.47} GeV. This translates to a top-quark lifetime of {tau}{sub t} = (3.29{sub -0.63}{sup +0.90}) x 10{sup -25} s. We also extract an improved direct limit on the Cabibbo-Kobayashi-Maskawa quark-mixing matrix element 0.81 < |V{sub tb}| {le} 1 at 95% C.L. and a limit of |V{sub tb}| < 0.59 for a high-mass fourth-generation bottom quark assuming unitarity of the fourth-generation quark-mixing matrix.

  12. Axial couplings and strong decay widths of heavy hadrons

    SciTech Connect (OSTI)

    William Detmold, C.-J. David Lin, Stefan Meinel

    2012-04-01

    We calculate the axial couplings of mesons and baryons containing a heavy quark in the static limit using lattice QCD. These couplings determine the leading interactions in heavy hadron chiral perturbation theory and are central quantities in heavy quark physics, as they control strong decay widths and the light-quark mass dependence of heavy hadron observables. Our analysis makes use of lattice data at six different pion masses, 227 MeV < m{sub {pi}} < 352 MeV, two lattice spacings, a = 0.085, 0.112 fm, and a volume of (2.7 fm){sup 3}. Our results for the axial couplings are g{sub 1} = 0.449(51), g{sub 2} = 0.84(20), and g{sub 3} = 0.71(13), where g{sub 1} governs the interaction between heavy-light mesons and pions and g{sub 2,3} are similar couplings between heavy-light baryons and pions. Using our lattice result for g{sub 3}, and constraining 1/m{sub Q} corrections in the strong decay widths with experimental data for {Sigma}{sub c}{sup (*)} decays, we obtain {Gamma}[{Sigma}{sub b}{sup (*)} {yields} {Lambda}{sub b} {pi}{sup {+-}}] = 4.2(1.0), 4.8(1.1), 7.3(1.6), 7.8(1.8) MeV for the {Sigma}{sub b}{sup +}, {Sigma}{sub b}{sup -}, {Sigma}{sub b}{sup *+}, {Sigma}{sub b}{sup *-} initial states, respectively. We also derive upper bounds on the widths of the {Xi}{sub b}{sup prime(*)} baryons.

  13. Width of the Confining String in Yang-Mills Theory

    SciTech Connect (OSTI)

    Gliozzi, F.; Pepe, M.; Wiese, U.-J.

    2010-06-11

    We investigate the transverse fluctuations of the confining string connecting two static quarks in (2+1)D SU(2) Yang-Mills theory using Monte Carlo calculations. The exponentially suppressed signal is extracted from the large noise by a very efficient multilevel algorithm. The resulting width of the string increases logarithmically with the distance between the static quark charges. Corrections at intermediate distances due to universal higher-order terms in the effective string action are calculated analytically. They accurately fit the numerical data.

  14. Optimal gate-width setting for passive neutrons multiplicity counting

    SciTech Connect (OSTI)

    Croft, Stephen; Evans, Louise G; Schear, Melissa A

    2010-01-01

    When setting up a passive neutron coincidence counter it is natural to ask what coincidence gate settings should be used to optimize the counting precision. If the gate width is too short then signal is lost and the precision is compromised because in a given period only a few coincidence events will be observed. On the other hand if the gate is too large the signal will be maximized but it will also be compromised by the high level of random pile-up or Accidental coincidence events which must be subtracted. In the case of shift register electronics connected to an assay chamber with an exponential dieaway profile operating in the regime where the Accidentals rate dominates the Reals coincidence rate but where dead-time is not a concern, simple arguments allow one to show that the relative precision on the net Reals rate is minimized when the coincidence gate is set to about 1.2 times the lie dieaway time of the system. In this work we show that making the same assumptions it is easy to show that the relative precision on the Triples rates is also at a minimum when the relative precision of the Doubles (or Reals) is at a minimum. Although the analysis is straightforward to our knowledge such a discussion has not been documented in the literature before. Actual measurement systems do not always behave in the ideal we choose to model them. Fortunately however the variation in the relative precision as a function of gate width is rather flat for traditional safeguards counters and so the performance is somewhat forgiving of the exact choice. The derivation further serves to delineate the important parameters which determine the relative counting precision of the Doubles and Triples rates under the regime considered. To illustrate the similarities and differences we consider the relative standard deviation that might be anticipated for a passive correlation count of an axial section of a spent nuclear fuel assembly under practically achievable conditions.

  15. Distributed seeding for narrow-line width hard x-ray free-electron...

    Office of Scientific and Technical Information (OSTI)

    for narrow-line width hard x-ray free-electron lasers Citation Details In-Document Search Title: Distributed seeding for narrow-line width hard x-ray free-electron lasers We ...

  16. 23 V.S.A. Section 1431 Height and Width Limits | Open Energy...

    Open Energy Info (EERE)

    search OpenEI Reference LibraryAdd to library Legal Document- StatuteStatute: 23 V.S.A. Section 1431 Height and Width LimitsLegal Abstract Limits for the height and width...

  17. Colorado - C.R.S. 42-4-502, Width of Load | Open Energy Information

    Open Energy Info (EERE)

    Colorado - C.R.S. 42-4-502, Width of Load Jump to: navigation, search OpenEI Reference LibraryAdd to library Legal Document- StatuteStatute: Colorado - C.R.S. 42-4-502, Width of...

  18. Controlling the width of a femtosecond continuum generated in a small-diameter fibre

    SciTech Connect (OSTI)

    Kobtsev, Sergey M; Kukarin, S V; Fateev, N V

    2002-01-31

    The control of the width of a continuum generated in a tapered germanium-doped silica fibre with the waist diameter of {approx}3 {mu}m is experimentally demonstrated for the first time. The width of the continuum was controlled by varying the wavelength of chirped femtosecond pump pulses near the zero-point of the group velocity dispersion of the fibre. The width of the continuum at the -20-dB level was varied from 98 to 790 nm by tuning the central wavelength of 80-fs, 0.6-nJ input pulses from 789 to 847 nm. (control of laser radiation parameters)

  19. Differential two-body compound nuclear cross section, including the width-fluctuation corrections

    SciTech Connect (OSTI)

    Brown, D.; Herman, M.

    2014-09-02

    We figure out the compound angular differential cross sections, following mainly Frbrich and Lipperheide, but with the angular momentum couplings that make sense for optical model work. We include the width-fluctuation correction along with calculations.

  20. Scaling trends in SET pulse widths in Sub-100 nm bulk CMOS processes.

    SciTech Connect (OSTI)

    Narasimham, Balaji; Ahlbin, Jonathan R.; Schrimpf, Ronald D.; Gadlage, Matthew J.; Massengill, Lloyd W.; Vizkelethy, Gyorgy; Reed, Robert A.; Bhuva, Bharat L.

    2010-07-01

    Digital single-event transient (SET) measurements in a bulk 65-nm process are compared to transients measured in 130-nm and 90-nm processes. The measured SET widths are shorter in a 65-nm test circuit than SETs measured in similar 90-nm and 130-nm circuits, but, when the factors affecting the SET width measurements (in particular pulse broadening and the parasitic bipolar effect) are considered, the actual SET width trends are found to be more complex. The differences in the SET widths between test circuits can be attributed in part to differences in n-well contact area. These results help explain some of the inconsistencies in SET measurements presented by various researchers over the past few years.

  1. Bounding the Higgs Width Through Interferometry (Journal Article) | SciTech

    Office of Scientific and Technical Information (OSTI)

    Connect Journal Article: Bounding the Higgs Width Through Interferometry Citation Details In-Document Search Title: Bounding the Higgs Width Through Interferometry Authors: Dixon, Lance J. ; Li, Ye ; /SLAC Publication Date: 2013-05-24 OSTI Identifier: 1080221 Report Number(s): SLAC-PUB-15463 arXiv:1305.3854 DOE Contract Number: AC02-76SF00515 Resource Type: Journal Article Resource Relation: Journal Name: Submitted to Physical Review Letters Research Org: SLAC National Accelerator Laboratory

  2. Bounding the Higgs Width Through Interferometry (Journal Article) | SciTech

    Office of Scientific and Technical Information (OSTI)

    Connect Bounding the Higgs Width Through Interferometry Citation Details In-Document Search Title: Bounding the Higgs Width Through Interferometry Authors: Dixon, Lance J. ; Li, Ye ; /SLAC Publication Date: 2013-05-24 OSTI Identifier: 1080221 Report Number(s): SLAC-PUB-15463 arXiv:1305.3854 DOE Contract Number: AC02-76SF00515 Resource Type: Journal Article Resource Relation: Journal Name: Submitted to Physical Review Letters Research Org: SLAC National Accelerator Laboratory (SLAC)

  3. EFFECTS OF SEAT WIDTH ON DEVELOPMENT OF ADHESIONS IN STAINLESS STEEL TRIM

    Office of Scientific and Technical Information (OSTI)

    SPRING OPERATED PRESSURE RELIEF VALVES (Conference) | SciTech Connect EFFECTS OF SEAT WIDTH ON DEVELOPMENT OF ADHESIONS IN STAINLESS STEEL TRIM SPRING OPERATED PRESSURE RELIEF VALVES Citation Details In-Document Search Title: EFFECTS OF SEAT WIDTH ON DEVELOPMENT OF ADHESIONS IN STAINLESS STEEL TRIM SPRING OPERATED PRESSURE RELIEF VALVES Authors: Harris, S. ; Gross, R. Publication Date: 2015-03-23 OSTI Identifier: 1209045 Report Number(s): SRNL-STI-2015-00183

  4. Solar wind suprathermal electron Stahl widths across high-speed stream structures

    SciTech Connect (OSTI)

    Skoug, Ruth M [Los Alamos National Laboratory; Steinberg, John T [Los Alamos National Laboratory; Goodrich, Katherine A [Los Alamos National Laboratory; Anderson, Brett R [DARTMUTH UNIV.

    2011-01-03

    Suprathermal electrons (100-1500 eV) observed in the solar wind typically show a strahl distribution, that is, a beam directed away from the Sun along the magnetic field direction. The strahl width observed at 1 AU is highly variable, ranging from 10-70 degrees. The obsenred finite width of the strahl results from the competition between beam focusing as the interplanetary magnetic field strength drops with distance from the Sun, and pitch-angle scattering as the beam interacts with the solar wind plasma in transit from the sun. Here we examine strahl width, observed with ACE SWEPAM across high-speed stream structures to investigate variations in electron scattering as a function of local plasma characteristics. We find that narrow strahls (less than 20 degrees wide), indicating reduced scattering, are observed within high-speed streams. Narrow strahls are also observed in both very low temperature solar wind, in association with ICMEs. Case studies of high-speed streams typically show the strahl narrowing at the leading edge of the stream. In some cases, the strahl narrows at the reverse shock or pressure wave, in other cases at the stream interface. The narrowing can either occur discontinuously or gradually over a period of hours. Within the high-speed wind, the strahl remains narrow for a period of hours to days, and then gradually broadens. The strahl width is roughly constant at all energies across these structures. For some fraction of high-speed streams, counterstreaming is associated with passage of the corotating interaction region. In these cases, we find the widths of the two counterstreaming beams frequently differ by more than 40 degrees. This dramatic difference in strahl width contrasts with observations in the solar wind as a whole, in which counterstreaming strahls typically differ in width by less than 20 degrees.

  5. Scaling of the giant dipole resonance widths in hot rotating nuclei from the ground state values

    SciTech Connect (OSTI)

    Bhattacharya, Srijit; Pandit, Deepak; Mukhopadhyay, S.; Pal, Surajit; Banerjee, S. R.

    2008-12-15

    The systematics of the giant dipole resonance (GDR) widths in hot and rotating nuclei are studied in terms of temperature T, angular momentum J, and mass A. The different experimental data in the temperature range of 1-2 MeV have been compared with the thermal shape fluctuation model (TSFM) in the liquid drop formalism using a modified approach to estimate the average values of T, J, and A in the decay of the compound nucleus. The values of the ground state GDR widths have been extracted from the TSFM parametrization in the liquid drop limit for the corrected T, J, and A for a given system and compared with the corresponding available systematics of the experimentally measured ground state GDR widths for a range of nuclei from A=45 to 194. Amazingly, the nature of the theoretically extracted ground state GDR widths matches remarkably well, though 1.5 times smaller, with the experimentally measured ground state GDR widths consistently over a wide range of nuclei.

  6. Nano-scaled graphene platelets with a high length-to-width aspect ratio

    DOE Patents [OSTI]

    Zhamu, Aruna; Guo, Jiusheng; Jang, Bor Z.

    2010-09-07

    This invention provides a nano-scaled graphene platelet (NGP) having a thickness no greater than 100 nm and a length-to-width ratio no less than 3 (preferably greater than 10). The NGP with a high length-to-width ratio can be prepared by using a method comprising (a) intercalating a carbon fiber or graphite fiber with an intercalate to form an intercalated fiber; (b) exfoliating the intercalated fiber to obtain an exfoliated fiber comprising graphene sheets or flakes; and (c) separating the graphene sheets or flakes to obtain nano-scaled graphene platelets. The invention also provides a nanocomposite material comprising an NGP with a high length-to-width ratio. Such a nanocomposite can become electrically conductive with a small weight fraction of NGPs. Conductive composites are particularly useful for shielding of sensitive electronic equipment against electromagnetic interference (EMI) or radio frequency interference (RFI), and for electrostatic charge dissipation.

  7. Partial Decay Widths of Negative Parity Baryons in the 1/N{sub c} Expansion

    SciTech Connect (OSTI)

    Gonzalez de Urreta, Emiliano; Scoccola, Norberto; Jayalath, Chandala; Goity, Jose

    2013-04-01

    The partial decay widths of lowest lying negative parity baryons belonging to the 70-plet of SU(6) are analyzed in the framework of the 1/N{sub c} expansion. The channels considered are those with single pseudoscalar meson emission. The analysis is carried out to sub-leading order in 1/N{sub c} and to first order in SU(3) symmetry breaking. Conclusions about the magnitude of SU(3) breaking effects along with predictions for some unknown or poorly determined partial decay widths of known resonances are given.

  8. Single line-of-sight dual energy backlighter for mix width experiments

    Office of Scientific and Technical Information (OSTI)

    (Journal Article) | SciTech Connect Single line-of-sight dual energy backlighter for mix width experiments Citation Details In-Document Search Title: Single line-of-sight dual energy backlighter for mix width experiments We present a diagnostic technique used to spatially multiplex two x-ray radiographs of an object onto a detector along a single line-of-sight. This technique uses a thin, <2 μm, cosputtered backlighter target to simultaneously produce both Ni and Zn He{sub α} emission.

  9. Distributed seeding for narrow-line width hard x-ray free-electron lasers

    Office of Scientific and Technical Information (OSTI)

    (Technical Report) | SciTech Connect Technical Report: Distributed seeding for narrow-line width hard x-ray free-electron lasers Citation Details In-Document Search Title: Distributed seeding for narrow-line width hard x-ray free-electron lasers We describe a new FEL line-narrowing technique called distributed seeding (DS), using Si(111) Bragg crystal monochromators to enhance the spectral brightness of the MaRIE hard X-ray freeelectron laser. DS differs from self-seeding in three important

  10. Partial decay widths of negative parity baryons in the 1/N{sub c} expansion

    SciTech Connect (OSTI)

    Gonzalez de Urreta, E. J.; Scoccola, N. N.; Jayalath, C. P.; Goity, J. L.

    2013-03-25

    The partial decay widths of lowest lying negative parity baryons belonging to the 70-plet of SU(6) are analyzed in the framework of the 1/N{sub c} expansion. The channels considered are those with single pseudoscalar meson emission. The analysis is carried out to sub-leading order in 1/N{sub c} and to first order in SU(3) symmetry breaking. Conclusions about the magnitude of SU(3) breaking effects along with predictions for some unknown or poorly determined partial decay widths of known resonances are given.

  11. Bounding the Higgs width at the LHC: complementary results from H→WW

    SciTech Connect (OSTI)

    Campbell, John M.; Ellis, R. Keith; Williams, Ciaran

    2014-03-01

    We investigate the potential of the process gg → H→ WW to provide bounds on the Higgs width. Recent studies using off-shell H→ ZZ events have shown that Run 1 LHC data can constrain the Higgs width, $\\Gamma_H < (25-45) \\Gamma_{H}^{\\rm SM}$. Using 20 fb-1 of 8 TeV ATLAS data, we estimate a bound on the Higgs boson width from the WW channel between $\\Gamma_H < (100-500) \\Gamma_H^{SM}$. The large spread in limits is due to the range of cuts applied in the existing experimental analysis. The stricter cuts designed to search for the on-shell Higgs boson limit the potential number of off-shell events, weakening the constraints. As some of the cuts are lifted the bounds improve. We show that there is potential in the high transverse mass region to produce upper bounds of the order of $(25-50) \\Gamma_H^{SM}$, depending strongly on the level of systematic uncertainty that can be obtained. Thus, if these systematics can be controlled, a constraint on the Higgs boson width from the H → WW$ decay mode can complement a corresponding limit from H → ZZ.

  12. Report of the working group on precision measurements - measurements of the W boson mass and width.

    SciTech Connect (OSTI)

    Brock, R.; Erler, J.; Kim, Y.-K.; Marciano, W.; Ashmanskas, W.; Baur, U.; Ellison, J.; Lancaster, M.; Nodulman, L.; Rha, J.; Waters, D.; Womersley, J.

    2000-11-29

    We discuss the prospects for measuring the W mass and width in Run II. The basic techniques used to measure M{sub W} are described and the statistical, theoretical and detector-related uncertainties are discussed in detail. Alternative methods of measuring the W mass at the Tevatron and the prospects for M{sub W} measurements at other colliders are also described.

  13. Method and apparatus for improved efficiency in a pulse-width-modulated alternating current motor drive

    DOE Patents [OSTI]

    Konrad, C.E.; Boothe, R.W.

    1996-01-23

    A scheme for optimizing the efficiency of an AC motor drive operated in a pulse-width-modulated mode provides that the modulation frequency of the power furnished to the motor is a function of commanded motor torque and is higher at lower torque requirements than at higher torque requirements. 6 figs.

  14. Method and apparatus for improved efficiency in a pulse-width-modulated alternating current motor drive

    DOE Patents [OSTI]

    Konrad, C.E.; Boothe, R.W.

    1994-02-15

    A scheme for optimizing the efficiency of an AC motor drive operated in a pulse-width-modulated mode provides that the modulation frequency of the power furnished to the motor is a function of commanded motor torque and is higher at lower torque requirements than at higher torque requirements. 6 figures.

  15. Method and apparatus for improved efficiency in a pulse-width-modulated alternating current motor drive

    DOE Patents [OSTI]

    Konrad, Charles E.; Boothe, Richard W.

    1994-01-01

    A scheme for optimizing the efficiency of an AC motor drive operated in a pulse-width-modulated mode provides that the modulation frequency of the power furnished to the motor is a function of commanded motor torque and is higher at lower torque requirements than at higher torque requirements.

  16. Method and apparatus for improved efficiency in a pulse-width-modulated alternating current motor drive

    DOE Patents [OSTI]

    Konrad, Charles E.; Boothe, Richard W.

    1996-01-01

    A scheme for optimizing the efficiency of an AC motor drive operated in a pulse-width-modulated mode provides that the modulation frequency of the power furnished to the motor is a function of commanded motor torque and is higher at lower torque requirements than at higher torque requirements.

  17. Turbulent transport regimes and the scrape-off layer heat flux width

    SciTech Connect (OSTI)

    Myra, J. R.; D'Ippolito, D. A.; Russell, D. A.

    2015-04-15

    Understanding the responsible mechanisms and resulting scaling of the scrape-off layer (SOL) heat flux width is important for predicting viable operating regimes in future tokamaks and for seeking possible mitigation schemes. In this paper, we present a qualitative and conceptual framework for understanding various regimes of edge/SOL turbulence and the role of turbulent transport as the mechanism for establishing the SOL heat flux width. Relevant considerations include the type and spectral characteristics of underlying instabilities, the location of the gradient drive relative to the SOL, the nonlinear saturation mechanism, and the parallel heat transport regime. We find a heat flux width scaling with major radius R that is generally positive, consistent with the previous findings [Connor et al., Nucl. Fusion 39, 169 (1999)]. The possible relationship of turbulence mechanisms to the neoclassical orbit width or heuristic drift mechanism in core energy confinement regimes known as low (L) mode and high (H) mode is considered, together with implications for the future experiments.

  18. Measurement of the CP-violating weak phase ϕs and the decay width

    Office of Scientific and Technical Information (OSTI)

    difference ΔΓs using the Bs0→J/ψϕ(1020) decay channel in pp collisions at s=8 TeV (Journal Article) | SciTech Connect Measurement of the CP-violating weak phase ϕs and the decay width difference ΔΓs using the B s 0 → J / ψ ϕ ( 1020 ) decay channel in pp collisions at s = 8 TeV Citation Details In-Document Search Title: Measurement of the CP-violating weak phase ϕs and the decay width difference ΔΓs using the B s 0 → J / ψ ϕ ( 1020 ) decay channel in pp collisions at s = 8

  19. Apparatus for controlling the scan width of a scanning laser beam

    DOE Patents [OSTI]

    Johnson, G.W.

    1996-10-22

    Swept-wavelength lasers are often used in absorption spectroscopy applications. In experiments where high accuracy is required, it is desirable to continuously monitor and control the range of wavelengths scanned (the scan width). A system has been demonstrated whereby the scan width of a swept ring-dye laser, or semiconductor diode laser, can be measured and controlled in real-time with a resolution better than 0.1%. Scan linearity, or conformity to a nonlinear scan waveform, can be measured and controlled. The system of the invention consists of a Fabry-Perot interferometer, three CAMAC interface modules, and a microcomputer running a simple analysis and proportional-integral control algorithm. With additional modules, multiple lasers can be simultaneously controlled. The invention also includes an embodiment implemented on an ordinary PC with a multifunction plug-in board. 8 figs.

  20. An indirect measurement of the width of the w boson at the D0 experiment

    SciTech Connect (OSTI)

    Telford, Paul; /Manchester U.

    2006-08-01

    This thesis presents an indirect measurement of the width of the W boson using data collected at the D0 experiment, a multipurpose particle detector utilizing the Fermilab Tevatron. The W width was determined from the ratio of W {yields} {mu}{nu} to Z {yields} {mu}{sup +}{mu}{sup -} cross sections to be {Gamma}{sub W} = 2168 {+-} 22(stat) {+-} 62(syst){sub -16}{sup +24}(pdf) {+-} 4(other) MeV, in good agreement with the Standard Model prediction and other experimental measurements. In addition there is a description of how work made towards this measurement has been used to improve the parameterized detector simulation, a vital tool in the obtention of physics results from signals observed in the detector, and in estimating the uncertainty due to choice of PDF, which is of interest for all measurements made at hadron colliders.

  1. Apparatus for controlling the scan width of a scanning laser beam

    DOE Patents [OSTI]

    Johnson, Gary W. (Livermore, CA)

    1996-01-01

    Swept-wavelength lasers are often used in absorption spectroscopy applications. In experiments where high accuracy is required, it is desirable to continuously monitor and control the range of wavelengths scanned (the scan width). A system has been demonstrated whereby the scan width of a swept ring-dye laser, or semiconductor diode laser, can be measured and controlled in real-time with a resolution better than 0.1%. Scan linearity, or conformity to a nonlinear scan waveform, can be measured and controlled. The system of the invention consists of a Fabry-Perot interferometer, three CAMAC interface modules, and a microcomputer running a simple analysis and proportional-integral control algorithm. With additional modules, multiple lasers can be simultaneously controlled. The invention also includes an embodiment implemented on an ordinary PC with a multifunction plug-in board.

  2. A spin-wave logic gate based on a width-modulated dynamic magnonic crystal

    SciTech Connect (OSTI)

    Nikitin, Andrey A.; Ustinov, Alexey B.; Semenov, Alexander A.; Kalinikos, Boris A.; Chumak, Andrii V.; Serga, Alexander A.; Vasyuchka, Vitaliy I.; Hillebrands, Burkard; Lhderanta, Erkki

    2015-03-09

    An electric current controlled spin-wave logic gate based on a width-modulated dynamic magnonic crystal is realized. The device utilizes a spin-wave waveguide fabricated from a single-crystal Yttrium Iron Garnet film and two conducting wires attached to the film surface. Application of electric currents to the wires provides a means for dynamic control of the effective geometry of waveguide and results in a suppression of the magnonic band gap. The performance of the magnonic crystal as an AND logic gate is demonstrated.

  3. Effects of Bismuth on Wide-Depletion-Width GaInNAs Solar Cells

    SciTech Connect (OSTI)

    Ptak, A. J.; France, R.; Jiang, C.-S.; Reedy, R. C.

    2008-05-01

    GaInNAs solar cells could be useful in next-generation multijunction solar cells if issues surrounding low photocurrents and photovoltages are surmounted. Wide-depletion-width devices generate significant photocurrent using a p-i-n structure grown by molecular beam epitaxy, but these depletion widths are only realized in a region of parameter space that leads to rough surface morphologies. Here, bismuth is explored as a surfactant for the growth of GaInNAs solar cells. Very low fluxes of Bi are effective at maintaining smooth surfaces, even at high growth temperatures and In contents. However, Bi also increases the net donor concentration in these materials, manifested in our n-on-p device structures as a pn-junction that moves deeper into the base layer with increasing Bi fluxes. Quantum efficiency modeling and scanning kelvin probe microscopy measurements confirm the type conversion of the base layer from p type to n type. Bi incorporation in GaAsBi samples shows signs of surface segregation, leading to a finite buildup time, and this effect may lead to slow changes in the electrical properties of the GaInNAs(Bi) devices. Bi also appears to create a defect level, although this defect level is not deleterious enough to increase the dark current in the devices.

  4. Method and apparatus for pulse width modulation control of an AC induction motor

    DOE Patents [OSTI]

    Geppert, Steven; Slicker, James M.

    1984-01-01

    An inverter is connected between a source of DC power and a three-phase AC induction motor, and a micro-processor-based circuit controls the inverter using pulse width modulation techniques. In the disclosed method of pulse width modulation, both edges of each pulse of a carrier pulse train are equally modulated by a time proportional to sin .THETA., where .THETA. is the angular displacement of the pulse center at the motor stator frequency from a fixed reference point on the carrier waveform. The carrier waveform frequency is a multiple of the motor stator frequency. The modulated pulse train is then applied to each of the motor phase inputs with respective phase shifts of 120.degree. at the stator frequency. Switching control commands of electronic switches in the inverter are stored in a random access memory (RAM) and the locations of the RAM are successively read out in a cyclic manner, each bit of a given RAM location controlling a respective phase input of the motor. The DC power source preferably comprises rechargeable batteries and all but one of the electronic switches in the inverter can be disabled, the remaining electronic switch being part of a "flyback" DC-DC converter circuit for recharging the battery.

  5. A Direct Top-Quark Width Measurement from Lepton + Jets Events at CDF II

    SciTech Connect (OSTI)

    Aaltonen, T.; Alvarez Gonzalez, B.; Amerio, S.; Amidei, D.; Anastassov, A.; Annovi, A.; Antos, J.; Apollinari, G.; Appel, J.A.; Apresyan, A.; Arisawa, T.; /Waseda U. /Dubna, JINR

    2010-08-01

    We present a measurement of the top-quark width using t{bar t} events produced in p{bar p} collisions at Fermilab's Tevatron collider and collected by the CDF II detector. In the mode where the top quark decays to a W boson and a bottom quark, we select events in which one W decays leptonically and the other hadronically (lepton + jets channel) . From a data sample corresponding to 4.3 fb{sup -1} of integrated luminosity, we identify 756 candidate events. The top-quark mass and the mass of W boson that decays hadronically are reconstructed for each event and compared with templates of different top-quark widths ({Lambda}{sub t}) and deviations from nominal jet energy scale ({Delta}{sub JES}) to perform a simultaneous fit for both parameters, where {Delta}{sub JES} is used for the in situ calibration of the jet energy scale. By applying a Feldman-Cousins approach, we establish an upper limit at 95% confidence level (CL) of {Lambda}{sub t} < 7.6 GeV and a two-sided 68% CL interval of 0.3 GeV < {Lambda}{sub t} < 4.4 GeV for a top-quark mass of 172.5 GeV/c{sup 2}, which are consistant with the standard model prediction. This is the first direct measurement of {Lambda}{sub t} to set a lower limit with 68% CL.

  6. Width dependent transition of quantized spin-wave modes in Ni{sub 80}Fe{sub 20} square nanorings

    SciTech Connect (OSTI)

    Banerjee, Chandrima; Saha, Susmita; Barman, Saswati; Barman, Anjan, E-mail: abarman@bose.res.in [Thematic Unit of Excellence on Nanodevice Technology, Department of Condensed Matter Physics and Material Sciences, S. N. Bose National Centre for Basic Sciences, Block JD, Sector III, Salt Lake, Kolkata 700098 (India); Rousseau, Olivier [CEMS-RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198 (Japan); Otani, YoshiChika [CEMS-RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198 (Japan); Institute for Solid State Physics, University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8581 (Japan)

    2014-10-28

    We investigated optically induced ultrafast magnetization dynamics in square shaped Ni{sub 80}Fe{sub 20} nanorings with varying ring width. Rich spin-wave spectra are observed whose frequencies showed a strong dependence on the ring width. Micromagnetic simulations showed different types of spin-wave modes, which are quantized upto very high quantization number. In the case of widest ring, the spin-wave mode spectrum shows quantized modes along the applied field direction, which is similar to the mode spectrum of an antidot array. As the ring width decreases, additional quantization in the azimuthal direction appears causing mixed modes. In the narrowest ring, the spin-waves exhibit quantization solely in azimuthal direction. The different quantization is attributed to the variation in the internal field distribution for different ring width as obtained from micromagnetic analysis and supported by magnetic force microscopy.

  7. Reduced model simulations of the scrape-off-layer heat-flux width and comparison with experiment

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Myra, J. R.; Russell, D. A.; D’Ippolito, D. A.; Ahn, J.-W.; Maingi, R.; Maqueda, R. J.; Lundberg, D. P.; Stotler, D. P.; Zweben, S. J.; Boedo, J.; et al

    2011-01-01

    Reduced model simulations of turbulence in the edge and scrape-off-layer (SOL) region of a spherical torus or tokamak plasma are employed to address the physics of the scrape-off-layer heat flux width. The simulation model is an electrostatic two-dimensional fluid turbulence model, applied in the plane perpendicular to the magnetic field at the outboard midplane of the torus. The model contains curvature-driven-interchange modes, sheath losses, and both perpendicular turbulent diffusive and convective (blob) transport. These transport processes compete with classical parallel transport to set the SOL width. Midplane SOL profiles of density, temperature and parallel heat flux are obtained from themore » simulation and compared with experimental results from the National Spherical Torus Experiment (NSTX) to study the scaling of the heat flux width with power and plasma current. It is concluded that midplane turbulence is the main contributor to the SOL heat flux width for the low power H-mode discharges studied, while additional physics is required to explain the plasma current scaling of the SOL heat flux width observed experimentally in higher power discharges. Intermittent separatrix spanning convective cells are found to be the main mechanism that sets the near-SOL width in the simulations. The roles of sheared flows and blob trapping vs. emission are discussed.« less

  8. Surface roughness and interface width scaling of magnetron sputter deposited Ni/Ti multilayers

    SciTech Connect (OSTI)

    Maidul Haque, S.; Biswas, A.; Tokas, R. B.; Bhattacharyya, D.; Sahoo, N. K.; Bhattacharya, Debarati

    2013-09-14

    Using an indigenously built r.f. magnetron sputtering system, several single layer Ti and Ni films have been deposited at varying deposition conditions. All the samples have been characterized by Grazing Incidence X-ray Reflectivity (GIXR) and Atomic Force Microscopy to estimate their thickness, density, and roughness and a power law dependence of the surface roughness on the film thickness has been established. Subsequently, at optimized deposition condition of Ti and Ni, four Ni/Ti multilayers of 11-layer, 21-layer, 31-layer, and 51-layer having different bilayer thickness have been deposited. The multilayer samples have been characterized by GIXR and neutron reflectivity measurements and the experimental data have been fitted assuming an appropriate sample structure. A power law correlation between the interface width and bilayer thickness has been observed for the multilayer samples, which was explained in the light of alternate roughening/smoothening of multilayers and assuming that at the interface the growth restarts every time.

  9. Low mass dark matter and invisible Higgs width in darkon models

    SciTech Connect (OSTI)

    Cai Yi; Ren Bo; He Xiaogang

    2011-04-15

    The Standard Model (SM) plus a real gauge-singlet scalar field dubbed darkon (SM+D) is the simplest model possessing a weakly interacting massive particle (WIMP) dark matter candidate. In this model, the parameters are constrained from dark matter relic density and direct searches. The fact that interaction between darkon and SM particles is only mediated by a Higgs boson exchange may lead to significant modifications to the Higgs boson properties. If the dark matter mass is smaller than half of the Higgs boson mass, then a Higgs boson can decay into a pair of darkons resulting in a large invisible branching ratio. The Higgs boson will be searched for at the LHC and may well be discovered in the near future. If a Higgs boson with a small invisible decay width will be found, the SM+D model with small dark matter mass will be in trouble. We find that by extending the SM+D to a two Higgs doublet model plus a darkon (THDM+D) it is possible to have a Higgs boson with a small invisible branching ratio and at the same time the dark matter can have a low mass. We also comment on other implications of this model.

  10. Laser ion source with long pulse width for RHIC-EBIS

    SciTech Connect (OSTI)

    Kondo, K.; Kanesue, T.; Okamura, M.

    2011-03-28

    The Electron Beam Ion Source (EBIS) at Brookhaven National Laboratory is a new heavy ion-projector for RHIC and NASA Space Radiation Laboratory. Laser Ion Source (LIS) with solenoid can supply many kinds of ion from solid targets and is suitable for long pulse length with low current as ion provider for RHIC-EBIS. In order to understand a plasma behavior for fringe field of solenoid, we measure current, pulse width and total ion charges by a new ion probe. The experimental result indicates that the solenoid confines the laser ablation plasma transversely. Laser ion source needs long pulse length with limited current as primary ion provider for RHIC-EBIS. New ion probe can measure current distribution for the radial positions along z axis. The beam pulse length is not effected by magnetic field strength. However, the currents and charges decay with the distance from the end of solenoid. These results indicate that solenoid field has important role for plasma confinement not longitudinally but transversely and solenoid is able to have long pulse length with sufficient total ion charges. Moreover, the results are useful for a design of the extraction system for RHIC-EBIS.

  11. A variable-width harmonic probe for multifrequency atomic force microscopy

    SciTech Connect (OSTI)

    Cai, Jiandong; Zhang, Li; Xia, Qi E-mail: michael.wang@nus.edu.sg; Luo, Yangjun; Wang, Michael Yu E-mail: michael.wang@nus.edu.sg

    2015-02-16

    In multifrequency atomic force microscopy (AFM) to simultaneously measure topography and material properties of specimens, it is highly desirable that the higher order resonance frequencies of the cantilever probe are assigned to be integer harmonics of the excitation frequency. The harmonic resonances are essential for significant enhancement of the probe's response at the specified harmonic frequencies. In this letter, a structural optimization technique is employed to design cantilever probes so that the ratios between one or more higher order resonance frequencies and the fundamental natural frequency are ensured to be equal to specified integers and, in the meantime, that the fundamental natural frequency is maximized. Width profile of the cantilever probe is the design variable in optimization. Thereafter, the probes were prepared by modifying a commercial probe through the focused ion beam (FIB) milling. The resonance frequencies of the FIB fabricated probes were measured with an AFM. Results of the measurement show that the optimal design of probe is as effective as design prediction.

  12. Fundamentals of a modified model of the distribution of neutron-resonance widths and results of its application in the mass-number range of 35 {<=} A {<=} 249

    SciTech Connect (OSTI)

    Sukhovoj, A. M. Khitrov, V. A.

    2013-01-15

    A modified model is developed for describing the distribution of random resonance width for any nuclei. The model assumes the coexistence in a nucleus of one or several partial radiative and neutron amplitudes for respective resonance widths, these amplitudes differing in their parameters. Also, it is assumed that amplitude can be described by a Gaussian curve characterized by a nonzero mean value and a variance not equal to unity and that their most probable values can be obtained with the highest reliability from approximations of cumulative sums of respective widths. An analysis of data for 157 sets of neutron widths for 0 {<=} l {<=} 3 and for 56 sets of total radiative widths has been performed to date. The basic result of this analysis is the following: both for neutron and for total radiative widths, the experimental set of resonance width can be represented with a rather high probability in the form of a superposition of k {<=} 4 types differing in mean amplitude parameters.

  13. Heuristic Drift-based Model of the Power Scrape-off width in H-mode Tokamaks

    SciTech Connect (OSTI)

    Robert J. Goldston

    2011-04-29

    An heuristic model for the plasma scrape-off width in H-mode plasmas is introduced. Grad B and curv B drifts into the SOL are balanced against sonic parallel flows out of the SOL, to the divertor plates. The overall particle flow pattern posited is a modification for open field lines of Pfirsch-Shlter flows to include sinks to the divertors. These assumptions result in an estimated SOL width of ~ 2a?p/R. They also result in a first-principles calculation of the particle confinement time of H-mode plasmas, qualitatively consistent with experimental observations. It is next assumed that anomalous perpendicular electron thermal diffusivity is the dominant source of heat flux across the separatrix, investing the SOL width, defined above, with heat from the main plasma. The separatrix temperature is calculated based on a two-point model balancing power input to the SOL with Spitzer-Hrm parallel thermal conduction losses to the divertor. This results in a heuristic closed-form prediction for the power scrape-off width that is in reasonable quantitative agreement both in absolute magnitude and in scaling with recent experimental data from deuterium plasmas. Further work should include full numerical calculations, including all magnetic and electric drifts, as well as more thorough comparison with experimental data.

  14. Tuning the band structures of a one-dimensional width-modulated magnonic crystal by a transverse magnetic field

    SciTech Connect (OSTI)

    Di, K.; Lim, H. S. Zhang, V. L.; Ng, S. C.; Kuok, M. H.; Nguyen, H. T.; Cottam, M. G.

    2014-02-07

    Theoretical studies, based on three independent techniques, of the band structure of a one-dimensional width-modulated magnonic crystal under a transverse magnetic field are reported. The band diagram is found to display distinct behaviors when the transverse field is either larger or smaller than a critical value. The widths and center positions of bandgaps exhibit unusual non-monotonic and large field-tunability through tilting the direction of magnetization. Some bandgaps can be dynamically switched on and off by simply tuning the strength of such a static field. Finally, the impact of the lowered symmetry of the magnetic ground state on the spin-wave excitation efficiency of an oscillating magnetic field is discussed. Our finding reveals that the magnetization direction plays an important role in tailoring magnonic band structures and hence in the design of dynamic spin-wave switches.

  15. Bounding the Higgs width at the LHC using full analytic results for $$gg → e^- e^+ \\mu^- \\mu^+$$

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Campbell, John M.; Ellis, R. Keith; Williams, Ciaran

    2014-04-09

    We revisit the hadronic production of the four-lepton final state, e– e+ μ– μ+, through the fusion of initial state gluons. This process is mediated by loops of quarks and we provide first full analytic results for helicity amplitudes that account for both the effects of the quark mass in the loop and off-shell vector bosons. The analytic results have been implemented in the Monte Carlo program MCFM and are both fast, and numerically stable in the region of low Z transverse momentum. We use our results to study the interference between Higgs-mediated and continuum production of four-lepton final states,more » which is necessary in order to obtain accurate theoretical predictions outside the Higgs resonance region. We have confirmed and extended a recent analysis of Caola and Melnikov that proposes to use a measurement of the off-shell region to constrain the total width of the Higgs boson. Using a simple cut-and-count method, existing LHC data should bound the width at the level of 25-45 times the Standard Model expectation. We investigate the power of using a matrix element method to construct a kinematic discriminant to sharpen the constraint. Furthermore, in our analysis the bound on the Higgs width is improved by a factor of about 1.6 using a simple cut on the MEM discriminant, compared to an invariant mass cut μ4l > 300 GeV.« less

  16. Coma measurement by use of an alternating phase-shifting mask mark with a specific phase width

    SciTech Connect (OSTI)

    Qiu Zicheng; Wang Xiangzhao; Yuan Qiongyan; Wang Fan

    2009-01-10

    The correlation between the coma sensitivity of the alternating phase-shifting mask (Alt-PSM) mark and the mark's structure is studied based on the Hopkins theory of partially coherent imaging and positive resist optical lithography (PROLITH) simulation. It is found that an optimized Alt-PSM mark with its phase width being two-thirds its pitch has a higher sensitivity to coma than Alt-PSM marks with the same pitch and the different phase widths. The pitch of the Alt-PSM mark is also optimized by PROLITH simulation, and the structure of p=1.92{lambda}/NA and pw=2p/3 proves to be with the highest sensitivity. The optimized Alt-PSM mark is used as a measurement mark to retrieve coma aberration from the projection optics in lithographic tools. In comparison with an ordinary Alt-PSM mark with its phase width being a half its pitch, the measurement accuracies of Z7 and Z14 apparently increase.

  17. Bounding the Higgs width at the LHC using full analytic results for $gg → e^- e^+ \\mu^- \\mu^+$

    SciTech Connect (OSTI)

    Campbell, John M.; Ellis, R. Keith; Williams, Ciaran

    2014-04-09

    We revisit the hadronic production of the four-lepton final state, e e+ μ μ+, through the fusion of initial state gluons. This process is mediated by loops of quarks and we provide first full analytic results for helicity amplitudes that account for both the effects of the quark mass in the loop and off-shell vector bosons. The analytic results have been implemented in the Monte Carlo program MCFM and are both fast, and numerically stable in the region of low Z transverse momentum. We use our results to study the interference between Higgs-mediated and continuum production of four-lepton final states, which is necessary in order to obtain accurate theoretical predictions outside the Higgs resonance region. We have confirmed and extended a recent analysis of Caola and Melnikov that proposes to use a measurement of the off-shell region to constrain the total width of the Higgs boson. Using a simple cut-and-count method, existing LHC data should bound the width at the level of 25-45 times the Standard Model expectation. We investigate the power of using a matrix element method to construct a kinematic discriminant to sharpen the constraint. Furthermore, in our analysis the bound on the Higgs width is improved by a factor of about 1.6 using a simple cut on the MEM discriminant, compared to an invariant mass cut μ4l > 300 GeV.

  18. Complete Feshbach-type calculations of energy positions and widths of autoionizing states in Li-like atoms

    SciTech Connect (OSTI)

    Cardona, Juan Carlos; Sanz-Vicario, Jose Luis; Martin, Fernando

    2010-08-15

    Applications of the Feshbach formalism to systems of more than two active electrons are very scarce due to practical limitations in the construction of the projection operators P and Q that are inherent to the theory. As a consequence, most previous applications rely on the use of approximate quasiprojection operators, whose theoretical justification is not yet clear. In this work, an implementation of the Feshbach formalism for three-electron atoms is presented that includes all the ingredients of the original formalism. Energy positions and autoionization widths of the lowest {sup 2}S{sup e}, {sup 2}P{sup o}, and {sup 2}D{sup e} autoionizing states of Li and Ne{sup 7+} have been evaluated. The results show that the use of quasiprojection operators is justified for the evaluation of resonant positions. However, for the {sup 2}S{sup e} states of Li, the use of quasiprojection operators can lead to errors in the autoionization widths of the order of 100%.

  19. Modeling the effect of lithium-induced pedestal profiles on scrape-off-layer turbulence and the heat flux width

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Russell, David A.; D'Ippolito, Daniel A.; Myra, James R.; Canik, John M.; Gray, Travis K.; Zweben, Stewart J.

    2015-09-01

    The effect of lithium (Li) wall coatings on scrape-off-layer (SOL) turbulence in the National Spherical Torus Experiment (NSTX) is modeled with the Lodestar SOLT (“SOL Turbulence”) code. Specifically, the implications for the SOL heat flux width of experimentally observed, Li-induced changes in the pedestal profiles are considered. The SOLT code used in the modeling has been expanded recently to include ion temperature evolution and ion diamagnetic drift effects. This work focuses on two NSTX discharges occurring pre- and with-Li deposition. The simulation density and temperature profiles are constrained, inside the last closed flux surface only, to match those measured inmore » the two experiments, and the resulting drift-interchange-driven turbulence is explored. The effect of Li enters the simulation only through the pedestal profile constraint: Li modifies the experimental density and temperature profiles in the pedestal, and these profiles affect the simulated SOL turbulence. The power entering the SOL measured in the experiments is matched in the simulations by adjusting “free” dissipation parameters (e.g., diffusion coefficients) that are not measured directly in the experiments. With power-matching, (a) the heat flux SOL width is smaller, as observed experimentally by infra-red thermography, and (b) the simulated density fluctuation amplitudes are reduced with Li, as inferred for the experiments as well from reflectometry analysis. The instabilities and saturation mechanisms that underlie the SOLT model equilibria are also discussed.« less

  20. Extended main sequence turnoffs in intermediate-age star clusters: a correlation between turnoff width and early escape velocity

    SciTech Connect (OSTI)

    Goudfrooij, Paul; Kozhurina-Platais, Vera; Kalirai, Jason S.; Correnti, Matteo E-mail: verap@stsci.edu E-mail: correnti@stsci.edu; and others

    2014-12-10

    We present a color-magnitude diagram analysis of deep Hubble Space Telescope imaging of a mass-limited sample of 18 intermediate-age (1-2 Gyr old) star clusters in the Magellanic Clouds, including eight clusters for which new data were obtained. We find that all star clusters in our sample feature extended main-sequence turnoff (eMSTO) regions that are wider than can be accounted for by a simple stellar population (including unresolved binary stars). FWHM widths of the MSTOs indicate age spreads of 200-550 Myr. We evaluate the dynamical evolution of clusters with and without initial mass segregation. Our main results are (1) the fraction of red clump (RC) stars in secondary RCs in eMSTO clusters scales with the fraction of MSTO stars having pseudo-ages of ?1.35 Gyr; (2) the width of the pseudo-age distributions of eMSTO clusters is correlated with their central escape velocity v {sub esc}, both currently and at an age of 10 Myr. We find that these two results are unlikely to be reproduced by the effects of interactive binary stars or a range of stellar rotation velocities. We therefore argue that the eMSTO phenomenon is mainly caused by extended star formation within the clusters; and (3) we find that v {sub esc} ? 15 km s{sup 1} out to ages of at least 100 Myr for all clusters featuring eMSTOs, and v {sub esc} ? 12 km s{sup 1} at all ages for two lower-mass clusters in the same age range that do not show eMSTOs. We argue that eMSTOs only occur for clusters whose early escape velocities are higher than the wind velocities of stars that provide material from which second-generation stars can form. The threshold of 12-15 km s{sup 1} is consistent with wind velocities of intermediate-mass asymptotic giant branch stars and massive binary stars in the literature.

  1. Magic ratio of window width to grating period for van der Waals potential measurements using material gratings

    SciTech Connect (OSTI)

    Lonij, Vincent P. A.; Holmgren, William F.; Cronin, Alexander D.

    2009-12-15

    We report improved precision measurements of the van der Waals potential strength (C{sub 3}) for Na atoms and a silicon-nitride (SiN{sub x}) surface. We studied diffraction from nanofabricated gratings with a particular 'magic' open fraction that allows us to determine C{sub 3} without the need for separate measurements of the width of the grating openings. Therefore, finding the magic open fraction improves the precision of C{sub 3} measurements. The same effect is demonstrated for a grating with an arbitrary open fraction by rotating it to a particular 'magic' angle, yielding C{sub 3}=3.42+-0.19 eV A{sup 3} for Na and a SiN{sub x} surface. This precision is sufficient to detect a change in C{sub 3} due to a thin metal coating on the grating surface. We discuss the contribution to C{sub 3} of core electrons and edge effects.

  2. A Simulation of the Effects of Varying Repetition Rate and Pulse Width of Nanosecond Discharges on Premixed Lean Methane-Air Combustion

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Bak, Moon Soo; Cappelli, Mark A.

    2012-01-01

    Two-dimensional kinetic simulation has been carried out to investigate the effects of repetition rate and pulse width of nanosecond repetitively pulsed discharges on stabilizing premixed lean methane-air combustion. The repetition rate and pulse width are varied from 10 kHz to 50 kHz and from 9 ns to 2 ns while the total power is kept constant. The lower repetition rates provide larger amounts of radicals such as O, H, and OH. However, the effect on stabilization is found to be the same for all of the tested repetition rates. The shorter pulse width is found to favor the production of species in higher electronicmore » states, but the varying effects on stabilization are also found to be small. Our results indicate that the total deposited power is the critical element that determines the extent of stabilization over this range of discharge properties studied.« less

  3. Direct measurement of the W boson decay width in proton-antiproton collisions at s**(1/2) = 1.96-TeV

    SciTech Connect (OSTI)

    Zhu, Jun-jie

    2004-10-01

    This dissertation describes a direct measurement of the W boson total decay width, {Lambda}{sub W}, using the D0 detector at the Fermilab Tevatron Collider. The measurement uses an integrated luminosity of 177.3 pb{sup -1} data, collected during the 2002-2003 run. The width is determined from the shape of the transverse mass distribution, M{sub T}, by fitting the data in the tail region 100 < M{sub T} < 200 GeV. The result if {Lambda}{sub W} = 2.011 {+-} 0.093(stat) {+-} 0.107(syst) GeV.

  4. Impact of E × B flow shear on turbulence and resulting power fall-off width in H-mode plasmas in experimental advanced superconducting tokamak

    SciTech Connect (OSTI)

    Yang, Q. Q. Zhong, F. C. E-mail: fczhong@dhu.edu.cn; Jia, M. N.; Xu, G. S. E-mail: fczhong@dhu.edu.cn; Wang, L.; Wang, H. Q.; Chen, R.; Yan, N.; Liu, S. C.; Chen, L.; Li, Y. L.; Liu, J. B.

    2015-06-15

    The power fall-off width in the H-mode scrape-off layer (SOL) in tokamaks shows a strong inverse dependence on the plasma current, which was noticed by both previous multi-machine scaling work [T. Eich et al., Nucl. Fusion 53, 093031 (2013)] and more recent work [L. Wang et al., Nucl. Fusion 54, 114002 (2014)] on the Experimental Advanced Superconducting Tokamak. To understand the underlying physics, probe measurements of three H-mode discharges with different plasma currents have been studied in this work. The results suggest that a higher plasma current is accompanied by a stronger E×B shear and a shorter radial correlation length of turbulence in the SOL, thus resulting in a narrower power fall-off width. A simple model has also been applied to demonstrate the suppression effect of E×B shear on turbulence in the SOL and shows relatively good agreement with the experimental observations.

  5. Multispectrum analysis of the v9 band of 12C2H6: Positions, intensities, self- and N2-broadened half-width coefficients

    SciTech Connect (OSTI)

    Devi, V. Malathy; Rinsland, Curtis P.; Benner, D. C.; Sams, Robert L.; Blake, Thomas A.

    2010-06-01

    Line positions, intensities, Lorentz self- and N2-broadened half-width coefficients have been measured for PQ3, PQ2, PQ1, RQ0,RQ1, RQ2, and RQ3 sub-band transitions in the 9 fundamental band of 12C2H6. A multispectrum nonlinear least-squares fitting technique was used to fit up to 17 high-resolution (~0.00156 cm-1), room temperature absorption spectra of pure (99.99% chemical purity) natural sample of ethane and lean mixtures of the high-purity ethane diluted with N2. A Bruker IFS 120HR Fourier transform spectrometer located at the Pacific Northwest National Laboratory (PNNL), in Richland, Washington was used to record the data. A standard Voigt line shape was assumed to fit all the data since no line mixing or other non Voigt line shapes were required to fit any of the spectra used in the analysis. Short spectral intervals (~2 to 2.5 cm-1) of all 17 spectra covering a specific PQ or RQ sub band were fit simultaneously. For the first time in an ethane band, pressure-broadened half-width coefficients were determined for each of the torsional-split components. Constraints were used such that the half-width coefficients of both torsional-split components were identical for a specific broadening gas. No pressure-induced shift coefficients were necessary to fit the spectra to their noise level. The present study revealed for the first time the dependence of self- and N2-broadened half-width coefficients upon the J, K quantum numbers of the transitions in ethane. A number of transitions belonging to the 9+ 4- 4 and the 9+2 4-2 4 hot bands were also observed in the fitted regions and measurements were made when possible.

  6. Impacts of Multileaf Collimators Leaf Width on Intensity-Modulated Radiotherapy Planning for Nasopharyngeal Carcinoma: Analysis of Two Commercial Elekta Devices

    SciTech Connect (OSTI)

    Wang Shichao; Gong Youling; Xu Qingfeng; Bai Sen; Lu You; Jiang Qingfeng; Chen Nianyong

    2011-07-01

    We compared the impacts of multileaf collimator (MLC) widths (standard MLC width of 10 mm [SMLC] and micro-MLC width of 4 mm [MMLC]) on intensity-modulated radiotherapy (IMRT) planning for nasopharyngeal carcinoma (NPC). Ten patients with NPC were recruited in this study. In each patient's case, plans were generated with the same machine setup parameter and optimizing methods in a treatment planning system according to 2 commercial Elekta MLC devices. All of the parameters were collected from dose-volume histograms of paired plans and evaluated. The average conformity index (CI) and homogeneous index (HI) for the planning gross target volume in IMRT plans with MMLC were 0.790 {+-} 0.036 and 1.062 {+-} 0.011, respectively. Data in plans with SMLC were 0.754 {+-} 0.038 and 1.070 {+-} 0.010, respectively. The differences were statistically significant (p < 0.05). Compared with CI and HI for planning target volume in paired plans, data with MMLC obviously were better than those with SMLC (CI: 0.858 {+-} 0.026 vs. 0.850 {+-} 0.021, p < 0.05; and HI: 1.185 {+-} 0.011 vs. 1.195 {+-} 0.011, p < 0.05). However, there was no statistical significance between evaluated parameters (Dmean, Dmax, D{sub 5}, gEUD, or NTCP) for organs at risk (OARs) in the 2 paired IMRT plans. According to these two kinds of Elekta MLC devices, IMRT plans with the MMLC have significant advantages in dose coverage for the targets, with more efficiency in treatment for NPC but fail to improve dose sparing of the OARs.

  7. Method for selecting minimum width of leaf in multileaf adjustable collimator while inhibiting passage of particle beams of radiation through sawtooth joints between collimator leaves

    DOE Patents [OSTI]

    Ludewigt, Bernhard; Bercovitz, John; Nyman, Mark; Chu, William

    1995-01-01

    A method is disclosed for selecting the minimum width of individual leaves of a multileaf adjustable collimator having sawtooth top and bottom surfaces between adjacent leaves of a first stack of leaves and sawtooth end edges which are capable of intermeshing with the corresponding sawtooth end edges of leaves in a second stack of leaves of the collimator. The minimum width of individual leaves in the collimator, each having a sawtooth configuration in the surface facing another leaf in the same stack and a sawtooth end edge, is selected to comprise the sum of the penetration depth or range of the particular type of radiation comprising the beam in the particular material used for forming the leaf; plus the total path length across all the air gaps in the area of the joint at the edges between two leaves defined between lines drawn across the peaks of adjacent sawtooth edges; plus at least one half of the length or period of a single sawtooth. To accomplish this, in accordance with the method of the invention, the penetration depth of the particular type of radiation in the particular material to be used for the collimator leaf is first measured. Then the distance or gap between adjoining or abutting leaves is selected, and the ratio of this distance to the height of the sawteeth is selected. Finally the number of air gaps through which the radiation will pass between sawteeth is determined by selecting the number of sawteeth to be formed in the joint. The measurement and/or selection of these parameters will permit one to determine the minimum width of the leaf which is required to prevent passage of the beam through the sawtooth joint.

  8. SU-E-T-428: Dosimetric Impact of Multileaf Collimator Leaf Width On Single and multiple Isocenter Stereotactic IMRT Treatment Plans for multiple Brain Tumors

    SciTech Connect (OSTI)

    Giem, J; Algan, O; Ahmad, S; Ali, I; Young, J; Hossain, S

    2014-06-01

    Purpose: To assess the impacts that multileaf collimator (MLC) leaf width has on the dose conformity and normal brain tissue doses of single and multiple isocenter stereotactic IMRT (SRT) plans for multiple intracranial tumors. Methods: Fourteen patients with 2–3 targets were studied retrospectively. Patients treated with multiple isocenter treatment plans using 9 to 12 non-coplanar beams per lesion underwent repeat planning using single isocenter and 10 to 12 non-coplanar beams with 2.5mm, 3mm and 5mm MLC leaf widths. Brainlab iPlan treatment planning system for delivery with the 2.5mm MLC served as reference. Identical contour sets and dose-volume constraints were applied. The prescribed dose to each target was 25 Gy to be delivered over 5 fractions with a minimum of 99% dose to cover ≥ 95% of the target volume. Results: The lesions and normal brains ranged in size from 0.11 to 51.67cc (median, 2.75cc) and 1090 to 1641cc (median, 1401cc), respectively. The Paddick conformity index for single and multiple isocenter (2.5mm vs. 3mm and 5mm MLCs) was (0.79±0.08 vs. 0.79±0.07 and 0.77±0.08) and (0.79±0.09 vs. 0.77±0.09 and 0.76±0.08), respectively. The average normal brain volumes receiving 15 Gy for single and multiple isocenter (2.5mm vs. 3mm and 5mm MLCs) were (3.65% vs. 3.95% and 4.09%) and (2.89% vs. 2.91% and 2.92%), respectively. Conclusion: The average dose conformity observed for the different leaf width for single and multiple isocenter plans were similar, throughout. However, the average normal brain volumes receiving 2.5 to 15 Gy were consistently lower for the 2.5mm MLC leaf width, especially for single isocenter plans. The clinical consequences of these integral normal brain tissue doses are still unknown, but employing the use of the 2.5mm MLC option is desirable at sparing normal brain tissue for both single and multiple isocenter cases.

  9. The spiral arms of the Milky Way: The relative location of each different arm tracer within a typical spiral arm width

    SciTech Connect (OSTI)

    Valle, Jacques P., E-mail: jacques.vallee@nrc-cnrc.gc.ca [National Research Council Canada, National Science Infrastructure portfolio, Herzberg Astronomy and Astrophysics, 5071 West Saanich Road, Victoria, B.C., V9E 2E7 (Canada)

    2014-07-01

    From the Sun's location in the Galactic disk, different arm tracers (CO, H I, hot dust, etc.) have been employed to locate a tangent to each spiral arm. Using all various and different observed spiral arm tracers (as published elsewhere), we embark on a new goal, namely the statistical analysis of these published data (data mining) to statistically compute the mean location of each spiral arm tracer. We show for a typical arm cross-cut, a separation of 400 pc between the mid-arm and the dust lane (at the inner edge of the arm, toward the Galactic center). Are some arms major and others minor? Separating arms into two sets, as suggested by some, we find the same arm widths between the two sets. Our interpretation is that we live in a multiple (four-arm) spiral (logarithmic) pattern (around a pitch angle of 12) for the stars and gas in the Milky Way, with a sizable interarm separation (around 3 kpc) at the Sun's location and the same arm width for each arm (near 400 pc from mid-arm to dust lane).

  10. Low temperature plasma channels generated in microcavity trenches with widths of 20-150 {mu}m and aspect ratios as large as 10{sup 4}:1

    SciTech Connect (OSTI)

    Lu, M.; Park, S.-J.; Cunningham, B. T.; Eden, J. G. [Department of Electrical and Computer Engineering, University of Illinois, Urbana, Illinois 61801 (United States)

    2008-03-10

    Low temperature plasma channels with widths as small as 20 {mu}m, cross-sectional areas of 400-12 000 {mu}m{sup 2}, and aspect ratios (channel length to width) of up to 10{sup 4}:1 have been generated on a steady state basis within sealed microcavity trenches fabricated by replica molding. With lengths up to 1 m and volumes of 10{sup -5}-{approx}10{sup -2} cm{sup 3}, these channels are situated in a dielectric barrier structure having a transverse, buried electrode geometry and are sustained by power loadings as high as {approx}1.2 kW cm{sup -3}. Current densities of {approx}5-10 A cm{sup -2} and estimated electron densities of {approx}10{sup 11}-10{sup 13} cm{sup -3} are produced with a 20 kHz sinusoidal voltage of V{sub rms}=225-325 V, rendering these channels of interest as on-chip plasma reactors or nonlinear optical conversion media. With the transversely excited, photolithographically defined microcavity structures reported here, plasma channels of at least several meters in length, and having an arbitrary, folded geometric pattern, can be generated.

  11. Electrical system for pulse-width modulated control of a power inverter using phase-shifted carrier signals and related operating methods

    DOE Patents [OSTI]

    Welchko, Brian A.

    2012-02-14

    Systems and methods are provided for pulse-width modulated control of power inverter using phase-shifted carrier signals. An electrical system comprises an energy source and a motor. The motor has a first set of windings and a second set of windings, which are electrically isolated from each other. An inverter module is coupled between the energy source and the motor and comprises a first set of phase legs coupled to the first set of windings and a second set of phase legs coupled to the second set of windings. A controller is coupled to the inverter module and is configured to achieve a desired power flow between the energy source and the motor by modulating the first set of phase legs using a first carrier signal and modulating the second set of phase legs using a second carrier signal. The second carrier signal is phase-shifted relative to the first carrier signal.

  12. Atomic cascade of K{sup -}p and K{sup -}d atoms and Doppler broadening contribution on x-ray widths

    SciTech Connect (OSTI)

    Kalantari, S. Z.; M. Raeisi, G.

    2010-01-15

    In this article we present a new calculation of the cascade of K{sup -}p and K{sup -}d atoms by the Monte Carlo method. Energy dependence of the collisional cascade processes is taken into account. The x-ray yields due to the radiative transition during the cascade are also calculated. We compare our results with the previous calculations by others and by KEK and DEAR experimental data for K{sup -}p atoms. We have also investigated the kinetic energy distribution of K{sup -}p atoms and the role of Coulomb transition on x-ray yields. Finally, the Doppler broadening contribution on the measured width of x-ray spectra are determined. In order to study the strong interaction in low energies, our results for x-ray yields from K{sup -}p and K{sup -}d atoms can be compared with the forthcoming SIDDHARTA collaboration results.

  13. Radiative widths of resonances (experiments)

    SciTech Connect (OSTI)

    Gidal, G.

    1988-07-01

    After a hiatus of several years, this conference brings us considerable new data on resonance production in photon photon interactions. I will first discuss the contributions concerning the tensor, pseudoscalar and scalar mesons, then review the current status of the (c/ovr string/c /eta//sub c/) and finally summarize the exciting new results concerning the spin 1 mesons. 40 refs., 21 figs., 7 tabs.

  14. Effects of core type, placement, and width on the estimated interstrand coupling properties of QXF-type Nb3Sn Rutherford cables

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Collings, E. W.; Sumption, M. D.; Majoros, M.; Wang, X.; Dietderich, D. R.

    2015-01-12

    The coupling magnetization of a Rutherford cable is inversely proportional to an effective interstrand contact resistance Reff , a function of the crossing-strand resistance Rc, and the adjacent strand resistance Ra. In cored cables, Reff continuously varies with W, the core width expressed as percent interstrand cover. For a series of un-heat-treated stabrite-coated NbTi LHC-inner cables with stainless-steel (SS, insulating) cores, Reff (W) decreased smoothly as W decreased from 100%, whereas for a set of research-wound SS-cored Nb3Sn cables, Reff plummeted abruptly and remained low over most of the range. The difference is due to the controlling influence of Rcmore » - 2.5 μΩ for the stabrite/NbTi and 0.26 μΩ for Nb3Sn. The experimental behavior was replicated in the Reff (W)’s calculated by the program CUDI, which (using the basic parameters of the QXF cable) went on to show in terms of decreasing W that: 1) in QXF-type Nb3Sn cables (Rc = 0.26 μΩ), Reff dropped even more suddenly when the SS core, instead of being centered, was offset to one edge of the cable; 2) Reff decreased more gradually in cables with higher Rc’s; and 3) a suitable Reff for a Nb3Sn cable can be achieved by inserting a suitably resistive core rather than an insulating (SS) one.« less

  15. Measurement of the w and z cross sections in the electron channel for p anti-p collisions at s**(1/2) = 1.96 TeV and extraction of the w total width from the ratio

    SciTech Connect (OSTI)

    Gardner, John Michael; /Kansas U.

    2005-01-01

    This dissertation presents measurements of the inclusive production cross sections for W and Z gauge bosons decaying through the electron channel with p{bar p} collisions at a center-of-mass energy of 1.96 TeV. The ratio of these cross sections is then used to extract the W total width. The Standard Model (SM) of electroweak and strong interactions is a collection of theories which together encompass what is currently known about the elementary particles that make up matter and the forces through which they interact. Experimentalists are constantly searching for violations of the Standard Model by making precision measurements of predicted interactions. The decay of the W boson is one such interaction. The rate of its decay is reflected in its width which is predicted to high precision using Standard Model-based calculations. Therefore, a high precision experimental width measurement would be very sensitive to any such violation. In principle the W and Z boson production cross sections could also be good Standard Model tests. However, a precise knowledge of integrated luminosity is required which is unfortunately difficult to obtain at the Tevatron. In fact, the W and Z cross section results can be used to obtain a more precise luminosity measurement. The data set consists of a total integrated luminosity of 177 pb{sup -1} collected from September 2002 to September 2003 using the D0 detector at Fermilab.

  16. Multispectrum measurements of spectral line parameters including temperature dependences of N2- and self-broadened half-width coefficients in the region of the v9 band of 12C2H6

    SciTech Connect (OSTI)

    Malathy Devi, V.; Benner, D. C.; Rinsland, C.P.; Smith, M.A.H.; Sams, Robert L.; Blake, Thomas A.; Flaud, Jean Marie; Sung, Keeyoon; Brown, L.R.; Mantz, A. W.

    2010-11-01

    Ethane is a prominent contributor to the spectrum of Titan, particularly in the region of the v9 band at 12?m. A multispectrum nonlinear least squares fitting program was applied to laboratory spectra of ethane to measure accurate positions, absolute intensities, N2- and selfbroadened half- width coefficients and their temperature dependences for a large number transitions. These measurements include several pQ and rQ sub-bands (and other sub-bands such as pP, rR) in the v9 fundamental band of 12C2H6 centered near 822 cm-1. Positions were measured for 2958 transitions and intensities for 3771 transitions. N2- and self-broadened half-width coefficients were determined for over 1700 transitions while temperature dependence exponents were retrieved for over 1350 of those transitions. Of these, many measurements (mostly line positions and intensities) belong to the v9+v4-v4 hot band, v9+2v4-2v4 hot band, 13C12CH6 v9 band and unidentified transitions. Forty-three high resolution (0.0016-0.005 cm-1) infrared laboratory absorption spectra recorded at temperatures between 148 and 298 K were fitted simultaneously to retrieve these parameters. Forty-one of these spectra were obtained in the temperature range of 211-298 K using the Bruker IFS 120HR interferometer located at the Pacific Northwest National Laboratory (PNNL) in Richland, Washington. Two additional spectra at 148 K were recorded using a new temperature stabilized cryogenic cell designed to work inside the sample compartment of the high resolution Bruker IFS 125HR interferometer of the Jet Propulsion Laboratory (JPL) in Pasadena California. The specialized cooling cell developed at Connecticut College and capable of achieving gas sample temperatures down to 70 K with a temperature stability and uniformity of better than 0.05 K was employed to record the 148 K spectra. Constraints to intensity ratios, doublet separations, half-width coefficients and their temperature dependence exponents were required to determine these parameters for each of the two torsional split components. Similar to N2- and self-broadened half-width coefficients, their temperature dependence exponents were also found to follow distinctively different patterns. The variations of the observed half-width coefficients and their temperature dependences with respect to J, K quantum numbers are discussed. Because of the high density of torsionally split spectral lines, hot-band ransitions as well as blends, it was not possible to retrieve any information on the small pressure-induced shift coefficients. Present results are compared to other available measurements.

  17. Property:Width (m) | Open Energy Information

    Open Energy Info (EERE)

    Float Wave Electric Power Station + 2.5 + MHK TechnologiesFloating anchored OTEC plant + 60 + MHK TechnologiesHyPEG + 50 + MHK TechnologiesHydroGen 10 + 2 + MHK...

  18. Interfacial Widths of Conjugated Polymer Bilayers

    SciTech Connect (OSTI)

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

    2009-08-13

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

  19. News Item

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    SPLEEM Specifications Electron energy typically 0 to 100 eV, energy width ~0.1 eV. Electron energy typically 0 to 100 eV, energy width ~0.1 eV. Spin-polarization (normally ~30 %) can be adjusted to point in any polar/azimuthal direction Spatial resolution ~10 nm laterally, atomic resolution along surface normal. Angular resolution of magnetization direction can be better than 2 deg. Time resolution: frame rate can be up to 20 fps, exposure time of several ms per frame is usually required for

  20. Final Technical Report for SBIR entitled Four-Dimensional Finite-Orbit-Width Fokker-Planck Code with Sources, for Neoclassical/Anomalous Transport Simulation of Ion and Electron Distributions

    SciTech Connect (OSTI)

    Harvey, R. W.; Petrov, Yu. V.

    2013-12-03

    Within the US Department of Energy/Office of Fusion Energy magnetic fusion research program, there is an important whole-plasma-modeling need for a radio-frequency/neutral-beam-injection (RF/NBI) transport-oriented finite-difference Fokker-Planck (FP) code with combined capabilities for 4D (2R2V) geometry near the fusion plasma periphery, and computationally less demanding 3D (1R2V) bounce-averaged capabilities for plasma in the core of fusion devices. Demonstration of proof-of-principle achievement of this goal has been carried out in research carried out under Phase I of the SBIR award. Two DOE-sponsored codes, the CQL3D bounce-average Fokker-Planck code in which CompX has specialized, and the COGENT 4D, plasma edge-oriented Fokker-Planck code which has been constructed by Lawrence Livermore National Laboratory and Lawrence Berkeley Laboratory scientists, where coupled. Coupling was achieved by using CQL3D calculated velocity distributions including an energetic tail resulting from NBI, as boundary conditions for the COGENT code over the two-dimensional velocity space on a spatial interface (flux) surface at a given radius near the plasma periphery. The finite-orbit-width fast ions from the CQL3D distributions penetrated into the peripheral plasma modeled by the COGENT code. This combined code demonstrates the feasibility of the proposed 3D/4D code. By combining these codes, the greatest computational efficiency is achieved subject to present modeling needs in toroidally symmetric magnetic fusion devices. The more efficient 3D code can be used in its regions of applicability, coupled to the more computationally demanding 4D code in higher collisionality edge plasma regions where that extended capability is necessary for accurate representation of the plasma. More efficient code leads to greater use and utility of the model. An ancillary aim of the project is to make the combined 3D/4D code user friendly. Achievement of full-coupling of these two Fokker-Planck codes will advance computational modeling of plasma devices important to the USDOE magnetic fusion energy program, in particular the DIII-D tokamak at General Atomics, San Diego, the NSTX spherical tokamak at Princeton, New Jersey, and the MST reversed-field-pinch Madison, Wisconsin. The validation studies of the code against the experiments will improve understanding of physics important for magnetic fusion, and will increase our design capabilities for achieving the goals of the International Tokamak Experimental Reactor (ITER) project in which the US is a participant and which seeks to demonstrate at least a factor of five in fusion power production divided by input power.

  1. Measurement of the CP-violating weak phase $\\mathrm{ \\phi_s }$ and the decay width difference $ \\Delta \\Gamma_{ \\mathrm{s} }$ using the $ \\mathrm{B^0_s} \\to \\mathrm{J} / \\psi \\phi(1020) $ decay channel in pp collisions at $\\sqrt{s} =$ 8 TeV

    SciTech Connect (OSTI)

    Khachatryan, Vardan

    2015-07-28

    The CP-violating weak phase ?s of the B0 s meson and the decay width difference ??s of the B0 s light and heavy mass eigenstates are measured with the CMS detector at the LHC using a data sample of B0 s ?J/? ?(1020) ? + -K+K- decays. Our analysed data set corresponds to an integrated luminosity of 19.7 fb-1 collected in pp collisions at a centre-of-mass energy of 8 TeV. Additionally, a total of 49 200 reconstructed B0 s decays are used to extract the values of ?s and ??s by performing a time-dependent and flavourtagged angular analysis of the + -K+K- final state. The weak phase is measured to be ?s = -0.075 0.097 (stat) 0.031 (syst) rad, and the decay width difference is ??s = 0.095 0.013 (stat) 0.007 (syst) ps-1 .

  2. Numerical simulations for width fluctuations in compound elastic...

    Office of Scientific and Technical Information (OSTI)

    Visit OSTI to utilize additional information resources in energy science and technology. A ... range, such as the inclusion of the direct channels, and the energy averaged cross ...

  3. Long-pulse-width narrow-bandwidth solid state laser

    DOE Patents [OSTI]

    Dane, C. Brent; Hackel, Lloyd A.

    1997-01-01

    A long pulse laser system emits 500-1000 ns quasi-rectangular pulses at 527 nm with near diffraction-limited divergence and near transform-limited bandwidth. The system consists of one or more flashlamp-pumped Nd:glass zig-zag amplifiers, a very low threshold stimulated-Brillouin-scattering (SBS) phase conjugator system, and a free-running single frequency Nd:YLF master oscillator. Completely passive polarization switching provides eight amplifier gain passes. Multiple frequency output can be generated by using SBS cells having different pressures of a gaseous SBS medium or different SBS materials. This long pulse, low divergence, narrow-bandwidth, multi-frequency output laser system is ideally suited for use as an illuminator for long range speckle imaging applications. Because of its high average power and high beam quality, this system has application in any process which would benefit from a long pulse format, including material processing and medical applications.

  4. Long-pulse-width narrow-bandwidth solid state laser

    DOE Patents [OSTI]

    Dane, C.B.; Hackel, L.A.

    1997-11-18

    A long pulse laser system emits 500-1000 ns quasi-rectangular pulses at 527 nm with near diffraction-limited divergence and near transform-limited bandwidth. The system consists of one or more flashlamp-pumped Nd:glass zig-zag amplifiers, a very low threshold stimulated-Brillouin-scattering (SBS) phase conjugator system, and a free-running single frequency Nd:YLF master oscillator. Completely passive polarization switching provides eight amplifier gain passes. Multiple frequency output can be generated by using SBS cells having different pressures of a gaseous SBS medium or different SBS materials. This long pulse, low divergence, narrow-bandwidth, multi-frequency output laser system is ideally suited for use as an illuminator for long range speckle imaging applications. Because of its high average power and high beam quality, this system has application in any process which would benefit from a long pulse format, including material processing and medical applications. 5 figs.

  5. Action Items

    Office of Environmental Management (EM)

    ACTION ITEMS Presentation to the DOE High Level Waste Corporate Board July 29, 2009 Kurt Gerdes Office of Waste Processing DOE-EM Office of Engineering & Technology 2 ACTION ITEMS...

  6. Microsoft Word - config item

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

    CITSS Configurable Item List COTS Software CITSS Configurable Items Page 1 January 1998 CI ... 5.0 100197 QO 370 SW-005 Paging Software WinBeep 2.12 100197 QO 370 SW-006 Help ...

  7. ADMIN Citation Item Title Item Summary Sub Item 1 Title Sub Item...

    Office of Environmental Management (EM)

    ... GRS 1, item 25e f. Employment Statistics Files. Employment statistics relating to race and sex. Department-wide Media-neutral Temporary. Destroy when 5 years old. GRS 1, item 25f ...

  8. Laser diffraction process and apparatus for width measurement of elongated objects

    DOE Patents [OSTI]

    Naqwi, Amir A.; Fandrey, Christopher W.

    2006-07-04

    Size distribution of elongated objects is measured by forward scattering radiation from the objects at a range of scatter angles. The scattered radiation is refracted to locations on a scatter detector based on the scatter angles and independent of the location of the objects along the radiation axis. The intensity of radiation is sensed at each position on the scatter detector, and signals representative of the intensities at the positions are processed and compared to masks to identify a size distribution. The scatter detector may include individual radiation detectors arranged to receive refracted radiation representing respective ranges of scatter angles to thereby compensate for lower radiation intensities scattered from smaller objects.

  9. Distributed seeding for narrow-line width hard x-ray free-electron...

    Office of Scientific and Technical Information (OSTI)

    Third, DS provides the option to select a wavelength longer than the peak of the SASE gain ... Word Cloud More Like This Full Text File size NAView Full Text View Full Text DOI: ...

  10. Measuring the Invisible Higgs Width at the 7 and 8 TeV LHC (Journal...

    Office of Scientific and Technical Information (OSTI)

    Authors: Bai, Yang ; SLAC ; Draper, Patrick ; UC, Santa Cruz ; Shelton, Jessie ; Yale U. ; , Publication Date: 2013-10-25 OSTI Identifier: 1097420 Report Number(s): ...

  11. Methods, systems and apparatus for adjusting duty cycle of pulse width modulated (PWM) waveforms

    DOE Patents [OSTI]

    Gallegos-Lopez, Gabriel; Kinoshita, Michael H; Ransom, Ray M; Perisic, Milun

    2013-05-21

    Embodiments of the present invention relate to methods, systems and apparatus for controlling operation of a multi-phase machine in a vector controlled motor drive system when the multi-phase machine operates in an overmodulation region. The disclosed embodiments provide a mechanism for adjusting a duty cycle of PWM waveforms so that the correct phase voltage command signals are applied at the angle transitions. This can reduce variations/errors in the phase voltage command signals applied to the multi-phase machine so that phase current may be properly regulated thus reducing current/torque oscillation, which can in turn improve machine efficiency and performance, as well as utilization of the DC voltage source.

  12. Measuring the Invisible Higgs Width at the 7 and 8 TeV LHC (Journal...

    Office of Scientific and Technical Information (OSTI)

    Research Org: SLAC National Accelerator Laboratory (SLAC) Sponsoring Org: DOE Country of Publication: United States Language: English Subject: Experiment-HEP, Phenomenology-HEP,HEPPH

  13. EFFECTS OF SEAT WIDTH ON DEVELOPMENT OF ADHESIONS IN STAINLESS STEEL TRIM

    Office of Scientific and Technical Information (OSTI)

    SPRING OPERATED PRESSURE RELIEF VALVES (Conference) | SciTech Connect 19

  14. EFFECTS OF SEAT WIDTH ON DEVELOPMENT OF ADHESIONS IN STAINLESS STEEL TRIM

    Office of Scientific and Technical Information (OSTI)

    SPRING OPERATED PRESSURE RELIEF VALVES (Conference) | SciTech Connect 25

  15. Pulse width modulated push-pull driven parallel resonant converter with active free-wheel

    DOE Patents [OSTI]

    Reass, William A.; Schrank, Louis

    2004-06-22

    An apparatus and method for high frequency alternating power generation to control kilowatts of supplied power in microseconds. The present invention includes a means for energy storage, push-pull switching means, control electronics, transformer means, resonant circuitry and means for excess energy recovery, all in electrical communication. A push-pull circuit works synchronously with a force commutated free-wheel transistor to provide current pulses to a transformer. A change in the conduction angle of the push-pull circuit changes the amount of energy coupled into the transformer's secondary oscillating circuit, thereby altering the induced secondary resonating voltage. At the end of each pulse, the force commutated free-wheel transistor causes residual excess energy in the primary circuit to be transmitted back to the storage capacitor for later use.

  16. Single line-of-sight dual energy backlighter for mix width experiments...

    Office of Scientific and Technical Information (OSTI)

    Authors: Baker, K. L., E-mail: baker7@llnl.gov ; Glendinning, S. G. ; Martinez, D. ; Dittrich, T. R. ; MacLaren, S. A. ; Felker, S. ; Seugling, R. ; Doane, D. ; Wallace, R. 1 ; ...

  17. Variable-Width Datapath for On-Chip Network Static Power Reduction

    SciTech Connect (OSTI)

    Michelogiannakis, George; Shalf, John

    2013-11-13

    With the tight power budgets in modern large-scale chips and the unpredictability of application traffic, on-chip network designers are faced with the dilemma of designing for worst- case bandwidth demands and incurring high static power overheads, or designing for an average traffic pattern and risk degrading performance. This paper proposes adaptive bandwidth networks (ABNs) which divide channels and switches into lanes such that the network provides just the bandwidth necessary in each hop. ABNs also activate input virtual channels (VCs) individually and take advantage of drowsy SRAM cells to eliminate false VC activations. In addition, ABNs readily apply to silicon defect tolerance with just the extra cost for detecting faults. For application traffic, ABNs reduce total power consumption by an average of 45percent with comparable performance compared to single-lane power-gated networks, and 33percent compared to multi-network designs.

  18. 23 V.S.A. Section 1402 Overweight, Width, Height, and Length...

    Open Energy Info (EERE)

    FeesLegal Abstract Sets forth fee requirements for issuing permits for operating a motor vehicle in excess of weight and size limits. Published NA Year Signed or Took Effect...

  19. Action Item Review and Status

    Office of Environmental Management (EM)

    Board Action Items Action Item Resolution Action Item Strategic Planning Initiative Optimization Study Resolution Presentation by S. Schneider (HLW System Integrated Project...

  20. Commercial Items Test Program

    Office of Energy Efficiency and Renewable Energy (EERE)

    Attached for your information is a copy of Civilian Agency Acquisition Council (CAAC) Letter 2009-04. It advises that the National Defense Authorization Act for Fiscal Year 201 0, Section 8 16 authorizes extension of the Commercial Items Test Program from January 1,20 10 to January 1,20 12 and that an expedited FAR Case is being processed to insert the new date at FAR 13.500(d). Also attached is a class deviation authorizing the use of simplified acquisition procedures for commercial items up to $5.5 million [$I1 million for acquisitions of commercial items under FAR 13.500(e)

  1. Item Management Control System

    Energy Science and Technology Software Center (OSTI)

    1993-08-06

    The Item Management Control System (IMCS) has been developed at Idaho National Engineering Laboratory to assist in organizing collections of documents using an IBM-PC or similar DOS system platform.

  2. Doubles counting of highly multiplying items in reflective surroundings

    SciTech Connect (OSTI)

    Croft, Stephen; Evans, Louise G; Schear, Melissa A; Tobin, Stephen J

    2010-11-18

    When a neutrons are counted from a spontaneously fissile multiplying item in a reflecting environment the temporal behavior of the correlated signal following neutron birth is complex. At early times the signal is dominated by prompt fission events coming from spontaneous fission bursts and also from prompt fast-neutron induced fission events. At later times neutrons 'returning' from the surroundings induce fission and give rise to an additional chain of correlated events. The prompt and returning components probe the fissile and fertile constituents of the item in different ways and it is potentially beneficial to exploit this fact. In this work we look at how the two components can be represented using a linear combination of two simple functions. Fitting of the composite function to the capture time distribution represents one way of quantifying the proportion of each contribution. Another approach however is to use a dual shift register analysis where after each triggering event two coincidence gates are opened, one close to the trigger that responds preferentially to the prompt dynamics and one later in time which is more sensitive to the returning neutron induced events. To decide on the best gate positions and gate widths and also to estimate the counting precision we can use the analytical fit to work out the necessary gate utilization factors which are required in both these calculations. In this work, we develop the approach. Illustrative examples are given using spent Low Enriched Uranium (LEU) Pressurized light Water Reactor (LWR) fuel assemblies submersed in borated water and counted in a ring of {sup 3}He gas-filled proportional counters. In this case the prompt component is dominated by {sup 244}Cm spontaneous fission and induced fast neutron fission in for example {sup 238}U while the returning low energy neutrons induce fission mainly in the fissile nuclides such as {sup 239}Pu, {sup 241}Pu and {sup 235}U. One requirement is to calculate the Random Triggered Interrogation Gate Utilization Factor needed to make a priori precision estimates but not available from Monte Carlo simulation code MCNPX.

  3. Item Not Found | DOE Patents

    Office of Scientific and Technical Information (OSTI)

    DOepatents Item Not Found Item Not Found The item you requested, OSTI ID 1225007, is not available in this collection. If you followed a link to this page, that link is outdated or contains an error. Search DOE Patents DOE Patents Home

  4. Pre-2012 News Items

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Pre-2012 News Items Project and Communication Milestones: April 4, 2011: MINERvA receives Secretary's Award of Achievement March 14, 2012: Scientists send encoded message through rock via neutrino beam A particle physics private eye takes on the great interaction caper 2006 Fermilab Today Series: February 2, 2006: MINERvA Takes Point-Blank Aim at Neutrino Mysteries February 22, 2006: MINERvA Recycles to Tap Many Lab Resources March 1, 2006: Students on MINERvA Get to see End Result March 8,

  5. SF 6432-CI Commercial Items

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    150,000 APPLY TO ALL CONTRACTS EXCEEDING 5,000,000 Control : SF 6432-CI Title: Standard Terms and Conditions for Commercial Items Owner: Procurement Policy Department...

  6. CAB-DWTM for 5 μm trace-width deposition of solar cell metallization top-contacts

    SciTech Connect (OSTI)

    Justin Hoey; Drew Thompson; Matt Robinson; Zakaria Mahmud; Orven F. Swenson; Iskander S. Akhatov; Douglas L. Schulz

    2009-06-08

    This paper reviews methods for creating solar cell grid contacts and explores how cell efficiency can be increased using CAB-DW{trademark}. Specifically, the efficiency of p-i-n structure solar cells built in-house with 90 {micro}m sputtered lines and 5 {micro}m CAB-DW lines were compared. Preliminary results of the comparison show a marked improvement in solar cell efficiency using CAB-DW. In addition to this, a theoretical and experimental analysis of the dynamics of particle impaction on a substrate (i.e. whether particle stick or bounce) will be discussed including how this analysis may lead to further improvement of CAB-DW.

  7. CRAD, Suspect/Counterfeit Item

    Broader source: Energy.gov [DOE]

    Management should have a formal system under Quality Assurance with adequate controls defined and implemented to identify and preclude Suspect/Counterfeit Items (S/CI) from being introduced into safety systems and applications that create potential hazards.

  8. Balancing Item (Billion Cubic Feet)

    U.S. Energy Information Administration (EIA) Indexed Site

    Balancing Item (Billion Cubic Feet) Balancing Item (Billion Cubic Feet) Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 2001 140 143 41 166 30 -13 -8 -6 -26 -133 -76 -161 2002 -4 38 11 164 28 95 54 49 8 -124 -126 -129 2003 -86 76 118 43 30 16 80 57 12 -49 -136 -118 2004 -66 134 126 133 116 71 58 60 63 -13 -79 -142 2005 -41 104 14 131 60 58 62 66 59 -37 -114 -127 2006 49 -2 80 152 53 41 34 51 -2 -99 -101 -153 2007 -128 55 118 42 63 34 3 24 -3 -52 -185 -175 2008 -75 54 59 105 38 42 23 29 16

  9. SF 6432-CI Commercial Items

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    04/2015) SECTION II STANDARD TERMS AND CONDITIONS FOR COMMERCIAL ITEMS THE FOLLOWING CLAUSES APPLY TO THIS CONTRACT AS INDICATED UNLESS SPECIFICALLY DELETED, OR EXCEPT TO THE EXTENT THEY ARE SPECIFICALLY SUPPLEMENTED OR AMENDED IN WRITING IN THE COVER PAGE OR SECTION I. (CTRL+CLICK ON A LINK BELOW TO ADVANCE DIRECTLY TO THAT SECTION) ACCEPTANCE OF TERMS AND CONDITIONS (Ts&Cs) APPLICABLE LAW ASSIGNMENT BANKRUPTCY CANCELLATION OR TERMINATION FOR CONVENIENCE CHANGES COMPLIANCE WITH LAWS

  10. PURPOSE FORM INSTRUCTIONS Item Description

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    PURPOSE FORM INSTRUCTIONS Item Description 1 Enter inclusive dates of current reporting period. 2 Enter the official contract title. 3 Enter the official contract number. 4 Enter the name and address of each subcontractor. Subcontractors are to be grouped by state. 5 Enter ZIP code plus the 4-digit ZIP code extension. 6 Enter the subcontractor's business type (i.e. Academia, Industry, National Lab, Non-Profit Organization, State, or Other). 7 Enter the subcontractor's business classification

  11. JOBAID-SELF ASSIGNING COURSES (ITEMS)

    Broader source: Energy.gov [DOE]

    In this jobaid you will learn to use the Course Catalog, Browse Catalog, Recommended Items, Locate and Self-Assign Items (Courses) Using the Search Catalog features, Narrow Course Searches using...

  12. Suspect/Counterfeit items found at NTS

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Suspect/Counterfeit and Defective Items Suspect/Counterfeit and Defective Items The Department of Energy (DOE) is committed to ensuring that items and components installed in safety-related or mission-critical applications meet their intended function and operability requirements. Therefore, EHSS has established a process for identifying Suspect/Counterfeit (S/CI) or Defective Items (DI) that are deemed safety-significant and broadly applicable to DOE facilities and for ensuring that action is

  13. DOE - NNSA/NFO -- Featured Items

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Featured Items [includes/language.htm] Featured Items The Nevada Field Office Featured Items section provides quick access to brief program updates and some of the more popular new content posted to our internet site. Publications listed or referenced in the featured item section on the main web page can be found in the Library section under publications. Instructions: Click the document title to view or download the Adobe PDF file marked with this icon ( PDF icon ) [ PDF Help | Free Viewer ]

  14. SF 6432-CI Commercial Items

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    11/17/15 Page 1 of 16 Printed copies of this document are uncontrolled. Retrieve latest version electronically. SANDIA CORPORATION SF 6432-CI (11/2015) SECTION II STANDARD TERMS AND CONDITIONS FOR COMMERCIAL ITEMS THE FOLLOWING CLAUSES APPLY TO THIS CONTRACT AS INDICATED UNLESS SPECIFICALLY DELETED, OR EXCEPT TO THE EXTENT THEY ARE SPECIFICALLY SUPPLEMENTED OR AMENDED IN WRITING IN THE COVER PAGE OR SECTION I. (CTRL+CLICK ON A LINK BELOW TO ADVANCE DIRECTLY TO THAT SECTION) ACCEPTANCE OF TERMS

  15. SF 6432-CI Commercial Items

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    7/31/13 Page 1 of 14 Printed copies of this document are uncontrolled. Retrieve latest version electronically. SANDIA CORPORATION SF 6432-CI (07/2013) SECTION II STANDARD TERMS AND CONDITIONS FOR COMMERCIAL ITEMS THE FOLLOWING CLAUSES APPLY TO THIS CONTRACT AS INDICATED UNLESS SPECIFICALLY DELETED, OR EXCEPT TO THE EXTENT THEY ARE SPECIFICALLY SUPPLEMENTED OR AMENDED IN WRITING IN THE COVER PAGE OR SECTION I. (CTRL+CLICK ON A LINK BELOW TO ADVANCE DIRECTLY TO THAT SECTION) ACCEPTANCE OF TERMS

  16. CITSS Configurable Item List: COTS Software | Department of Energy

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

    Configurable Item List: COTS Software CITSS Configurable Item List: COTS Software CITSS Configurable Item List: COTS Software PDF icon CITSS Configurable Item List: COTS Software More Documents & Publications CITSS Project Plan CITSS Project Plan Software Configuration Management Plan

  17. Suspect and Counterfeit Items Memo | Department of Energy

    Energy Savers [EERE]

    Suspect and Counterfeit Items Memo Suspect and Counterfeit Items Memo The issue of Suspect/Counterfeit Items (S/CI), specifically electronic components and integrated circuits, is an increasing problem throughout the nuclear industry. PDF icon Suspect and Counterfeit Items Memo More Documents & Publications Technical Standards Newsletter - October 2015 Suspect/Counterfeit Items Awareness Training Manual Visiting Speaker Program - May 12, 2011

  18. Suspect/Counterfeit Item Awareness Training Manual

    Energy Savers [EERE]

    Suspect/Counterfeit Items Awareness Training U.S. Department of Energy Health, Safety and Security Office of Corporate Safety Analysis This training document is in the process of being revised by the Office of Analysis (HS-24) through a partnership with the Energy Facility Contractors Group. In the interim, the Suspect/ Counterfeit Headmark List (page 11) has been updated with the most current version. June 2007 Revision 6 Suspect/Counterfeit Items Training Sponsored by the Office of Analysis

  19. Suspect/Counterfeit and Defective Items

    Broader source: Energy.gov [DOE]

    The Department of Energy (DOE) is committed to ensuring that items and components installed in safety-related or mission-critical applications meet their intended function and operability requirements. Therefore, EHSS has established a process for identifying Suspect/Counterfeit (S/CI) or Defective Items (DI) that are deemed safety-significant and broadly applicable to DOE facilities and for ensuring that action is taken.

  20. Calorimetry of low mass Pu239 items

    SciTech Connect (OSTI)

    Cremers, Teresa L; Sampson, Thomas E

    2010-01-01

    Calorimetric assay has the reputation of providing the highest precision and accuracy of all nondestructive assay measurements. Unfortunately, non-destructive assay practitioners and measurement consumers often extend, inappropriately, the high precision and accuracy of calorimetric assay to very low mass items. One purpose of this document is to present more realistic expectations for the random uncertainties associated with calorimetric assay for weapons grade plutonium items with masses of 200 grams or less.

  1. Integrated Program Management Report (IPMR) Data Item Description...

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

    Integrated Program Management Report (IPMR) Data Item Description (DID) Integrated Program Management Report (IPMR) Data Item Description (DID) Integrated Program Management Report...

  2. Suspect/Counterfeit Items Awareness Training Manual

    Broader source: Energy.gov [DOE]

    The manual discusses definitions, the DOE S/CI process, DOE Directives and Government-Industry Data Exchange Program (GIDEP), and the DOE S/CI website. Appendices cover fasteners, components and product information, suspect indications list, suspect/counterfeit items (S/CI) found at DOE facilities, references, and resources.

  3. Guide to good practices for the development of test items

    SciTech Connect (OSTI)

    1997-01-01

    While the methodology used in developing test items can vary significantly, to ensure quality examinations, test items should be developed systematically. Test design and development is discussed in the DOE Guide to Good Practices for Design, Development, and Implementation of Examinations. This guide is intended to be a supplement by providing more detailed guidance on the development of specific test items. This guide addresses the development of written examination test items primarily. However, many of the concepts also apply to oral examinations, both in the classroom and on the job. This guide is intended to be used as guidance for the classroom and laboratory instructor or curriculum developer responsible for the construction of individual test items. This document focuses on written test items, but includes information relative to open-reference (open book) examination test items, as well. These test items have been categorized as short-answer, multiple-choice, or essay. Each test item format is described, examples are provided, and a procedure for development is included. The appendices provide examples for writing test items, a test item development form, and examples of various test item formats.

  4. Calorimeter measurements of low wattage items

    SciTech Connect (OSTI)

    Cremers, T.L.; Camp, K.L.; Hildner, S.S.; Sedlacek, W.A.

    1993-08-01

    The transition of DOE facilities from production to decontamination and decommissioning has led to more measurements of waste, scrap, and other less attractive materials. The difficulty that these materials pose for segmented gamma scanning and neutron counting has increased the use of calorimetric assay for very low wattage items (< 250 millwatts). We have measured well characterized {sup 238}Pu oxide ranging in wattage from 25 to 500 milliwatts in the calorimeters at the Los Alamos Plutonium Facility and report the error and the precision of the measurements.

  5. Feed mechanism and method for feeding minute items

    DOE Patents [OSTI]

    Stringer, Timothy Kent; Yerganian, Simon Scott

    2009-10-20

    A feeding mechanism and method for feeding minute items, such as capacitors, resistors, or solder preforms. The mechanism is adapted to receive a plurality of the randomly-positioned and randomly-oriented extremely small or minute items, and to isolate, orient, and position one or more of the items in a specific repeatable pickup location wherefrom they may be removed for use by, for example, a computer-controlled automated assembly machine. The mechanism comprises a sliding shelf adapted to receive and support the items; a wiper arm adapted to achieve a single even layer of the items; and a pushing arm adapted to push the items into the pickup location. The mechanism can be adapted for providing the items with a more exact orientation, and can also be adapted for use in a liquid environment.

  6. Feed mechanism and method for feeding minute items

    DOE Patents [OSTI]

    Stringer, Timothy Kent; Yerganian, Simon Scott

    2012-11-06

    A feeding mechanism and method for feeding minute items, such as capacitors, resistors, or solder preforms. The mechanism is adapted to receive a plurality of the randomly-positioned and randomly-oriented extremely small or minute items, and to isolate, orient, and position the items in a specific repeatable pickup location wherefrom they may be removed for use by, for example, a computer-controlled automated assembly machine. The mechanism comprises a sliding shelf adapted to receive and support the items; a wiper arm adapted to achieve a single even layer of the items; and a pushing arm adapted to push the items into the pickup location. The mechanism can be adapted for providing the items with a more exact orientation, and can also be adapted for use in a liquid environment.

  7. Binary classification of items of interest in a repeatable process

    DOE Patents [OSTI]

    Abell, Jeffrey A.; Spicer, John Patrick; Wincek, Michael Anthony; Wang, Hui; Chakraborty, Debejyo

    2014-06-24

    A system includes host and learning machines in electrical communication with sensors positioned with respect to an item of interest, e.g., a weld, and memory. The host executes instructions from memory to predict a binary quality status of the item. The learning machine receives signals from the sensor(s), identifies candidate features, and extracts features from the candidates that are more predictive of the binary quality status relative to other candidate features. The learning machine maps the extracted features to a dimensional space that includes most of the items from a passing binary class and excludes all or most of the items from a failing binary class. The host also compares the received signals for a subsequent item of interest to the dimensional space to thereby predict, in real time, the binary quality status of the subsequent item of interest.

  8. Seasonality in the Natural Gas Balancing Item: Historical Trends and

    U.S. Energy Information Administration (EIA) Indexed Site

    Corrective Measures Analysis > Seasonality in the Natural Gas Balancing Item: Historical Trends and Corrective Measures Seasonality in the Natural Gas Balancing Item: Historical Trends and Corrective Measures Released: June 4, 2010 Download Full Report (PDF) This special report examines an underlying cause of the seasonal pattern in the balancing item published in the Natural Gas Monthly. Research finds that a significant portion of data collected on EIA’s primary monthly natural gas

  9. Safety Evaluation for Packaging (onsite) T Plant Canyon Items

    SciTech Connect (OSTI)

    OBRIEN, J.H.

    2000-07-14

    This safety evaluation for packaging (SEP) evaluates and documents the ability to safely ship mostly unique inventories of miscellaneous T Plant canyon waste items (T-P Items) encountered during the canyon deck clean off campaign. In addition, this SEP addresses contaminated items and material that may be shipped in a strong tight package (STP). The shipments meet the criteria for onsite shipments as specified by Fluor Hanford in HNF-PRO-154, Responsibilities and Procedures for all Hazardous Material Shipments.

  10. Integrated Program Management Report (IPMR) Data Item Description (DID) |

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

    Department of Energy Integrated Program Management Report (IPMR) Data Item Description (DID) Integrated Program Management Report (IPMR) Data Item Description (DID) Integrated Program Management Report (IPMR) combines the Contractor Performance Report (CPR) and Integrated Master Schedule (IMS) reporting requirements on contracts requiring Earned Value Management (EVM) reporting of project/contract performance. Document available for download via link below provides Data Item Description

  11. SF6432-CI (02-01-12) Commercial Items

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    who will enter a government site to perform Control : SF 6432-CI Title: Standard Terms and Conditions for Commercial Items Owner: Procurement Policy & Quality Dept Release...

  12. AVOID BECOMING A VICTIM OF COUNTERFEIT ITEMS

    SciTech Connect (OSTI)

    WARRINER RD

    2011-07-13

    In today's globalized economy, we cannot live without imported products. Most people do not realize how thin the safety net of regulation and inspection really is. Less than three percent of imported products receive any form of government inspection prior to sale. Avoid flea markets, street vendors and deep discount stores. The sellers of counterfeit wares know where to market their products. They look for individuals who are hungry for a brand name item but do not want to pay a brand name price for it. The internet provides anonymity to the sellers of counterfeit products. Unlike Europe, U.S. law does not hold internet-marketing organizations, responsible for the quality of the products sold on their websites. These organizations will remove an individual vendor when a sufficient number of complaints are lodged, but they will not take responsibility for the counterfeit products you may have purchased. EBay has a number of counterfeit product guides to help you avoid being a victim of the sellers of these products. Ten percent of all medications taken worldwide are counterfeit. If you do buy medications on-line, be sure that the National Association of Boards of Pharmacy Verified Internet Pharmacy Practice Sites (VIPPS) recommends the pharmacy you choose to use. Inspect all medication purchases and report any change in color, shape, imprinting or odor to your pharmacist. If you take generic medications these attributes may change from one manufacturer to another. Your pharmacist should inform you of any changes when you refill your prescription. If they do not, get clarification prior to taking the medication. Please note that the Federal Drug Administration (FDA) does not regulate supplements. The FDA only steps in when a specific supplement proves to cause physical harm or contains a regulated ingredient. Due to counterfeiting, Underwriters Laboratories (UL) changed their label design three times since 1996. The new gold label should be attached to the cord or body of most office and home electrical products (please see the picture to the left). Holiday lights may have the UL marking in red or green instead of the universal black. A red UL mark indicates the product is approved for outdoor as well as indoor service. The green UL mark indicates the product is only to be used indoors. A small number of home electrical products may bear an Interteck (ETL) approval. This label is also acceptable. An Interteck label includes black print on a white background bearing the circular ETL logo. Most manufacturers are proud of their products and strive to gain name recognition as well as foster repeat business. This is not true of counterfeiters. The very first thing most counterfeiters try to do is make their products untraceable. Their products may bear the nation of origin but that is all. This is a common practice with metal components such as pipe fittings and flanges. This is also true of hoisting and rigging equipment such as shackles, turnbuckles and chain. Sadly, this has also occurred with the purchase of some safety equipment such as arc-flash retardant coveralls. Learn the national standards associated with products you are purchasing. Clearly specify these requirements on the procurements you make.

  13. SUMMARY OF FINAL RULES Item Subject FAR Case

    Broader source: Energy.gov (indexed) [DOE]

    SUMMARY OF FINAL RULES Item Subject FAR Case FAC 56-Miscellaneous I. Women-Owned Small Business Program 2010-015 II. Proper Use and Management of Cost-Reimbursement Contracts...

  14. Federal Acquisition Circular 2005-52 Item Subject FAR...

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

    2009-039 V Oversight of Contractor Ethics Programs 2010-017 VI Technical Amendments ... Item V--Oversight of Contractor Ethics Programs (FAR Case 2010-017) This final rule ...

  15. Gathering total items count for pagination | OpenEI Community

    Open Energy Info (EERE)

    Gathering total items count for pagination Home > Groups > Utility Rate Hi I'm using the following base link plus some restrictions to sector, utility, and locations to poll for...

  16. LLNL line-item construction projects Master Site Plan

    SciTech Connect (OSTI)

    1996-04-15

    This interim submittal is an updated 1996 overview of the Master Plan based on the 1995 LLNL Site Development Plan, illustrating the future land use considerations, and the locations of proposed facilities as documented through the line item development process and keyed to the summary table. The following components in addition to the line-item proposals remain key elements in the implementation strategy of the Master Plan: personnel migration, revitalization, space reduction, classified core contraction, utility systems, and environmental restoration.

  17. Suspect/Counterfeit Items Information Guide for Subcontractors/Suppliers

    SciTech Connect (OSTI)

    Tessmar, Nancy D.; Salazar, Michael J.

    2012-09-18

    Counterfeiting of industrial and commercial grade items is an international problem that places worker safety, program objectives, expensive equipment, and security at risk. In order to prevent the introduction of Suspect/Counterfeit Items (S/CI), this information sheet is being made available as a guide to assist in the implementation of S/CI awareness and controls, in conjunction with subcontractor's/supplier's quality assurance programs. When it comes to counterfeit goods, including industrial materials, items, and equipment, no market is immune. Some manufactures have been known to misrepresent their products and intentionally use inferior materials and processes to manufacture substandard items, whose properties can significantly cart from established standards and specifications. These substandard items termed by the Department of Energy (DOE) as S/CI, pose immediate and potential threats to the safety of DOE and contractor workers, the public, and the environment. Failure of certain systems and processes caused by an S/CI could also have national security implications at Los Alamos National Laboratory (LANL). Nuclear Safety Rules (federal Laws), DOE Orders, and other regulations set forth requirements for DOE contractors to implement effective controls to assure that items and services meet specified requirements. This includes techniques to implement and thereby minimizing the potential threat of entry of S/CI to LANL. As a qualified supplier of goods or services to the LANL, your company will be required to establish and maintain effective controls to prevent the introduction of S/CI to LANL. This will require that your company warrant that all items (including their subassemblies, components, and parts) sold to LANL are genuine (i.e. not counterfeit), new, and unused, and conform to the requirements of the LANL purchase orders/contracts unless otherwise approved in writing to the Los Alamos National Security (LANS) contract administrator/procurements specialist.

  18. Method using a density field for locating related items for data mining

    DOE Patents [OSTI]

    Wylie, Brian N.

    2002-01-01

    A method for locating related items in a geometric space transforms relationships among items to geometric locations. The method locates items in the geometric space so that the distance between items corresponds to the degree of relatedness. The method facilitates communication of the structure of the relationships among the items. The method makes use of numeric values as a measure of similarity between each pairing of items. The items are given initial coordinates in the space. An energy is then determined for each item from the item's distance and similarity to other items, and from the density of items assigned coordinates near the item. The distance and similarity component can act to draw items with high similarities close together, while the density component can act to force all items apart. If a terminal condition is not yet reached, then new coordinates can be determined for one or more items, and the energy determination repeated. The iteration can terminate, for example, when the total energy reaches a threshold, when each item's energy is below a threshold, after a certain amount of time or iterations.

  19. Comparison of an electro-optical system and photo-conducting antenna employed as detectors of pulsed terahertz radiation by means of a new method for measuring spectral width

    SciTech Connect (OSTI)

    Grachev, Ya V; Osipova, M O; Bespalov, V G

    2014-12-31

    Two detection systems, electro-optical system and photoconducting system, are tested by the method suggested previously for determining the boundaries of broadband terahertz radiation in time-domain spectroscopy. From a series of measurements the error in determining the operation ranges is calculated. The terahertz spectrometer with an electro-optical detector based on a ZnTe (110) crystal of thickness 2 mm has the operation spectral range of 0.059 1.092 THz. The detector utilizing an iPCA-21-05-1000-800-h photo-conducting antenna with the same source of signal demonstrates a wider operation band ranging from 0.017 to 1.6 THz. The method developed makes it possible to experimentally compare the parameters of the considered terahertz spectrometers obtained under the same quality of adjustment. (laser applications and other topics in quantum electronics)

  20. Method of data mining including determining multidimensional coordinates of each item using a predetermined scalar similarity value for each item pair

    DOE Patents [OSTI]

    Meyers, Charles E.; Davidson, George S.; Johnson, David K.; Hendrickson, Bruce A.; Wylie, Brian N.

    1999-01-01

    A method of data mining represents related items in a multidimensional space. Distance between items in the multidimensional space corresponds to the extent of relationship between the items. The user can select portions of the space to perceive. The user also can interact with and control the communication of the space, focusing attention on aspects of the space of most interest. The multidimensional spatial representation allows more ready comprehension of the structure of the relationships among the items.

  1. DOE Hosts Festival to Collect Items for Area Food Banks

    Broader source: Energy.gov [DOE]

    WASHINGTON, D.C. – Deputy Secretary of Energy Daniel Poneman and a representative of the Capital Area Food Bank are among the guest speakers at an event this Tuesday, July 31, to collect food items for the DOE Feeds Families drive.

  2. Electronic structure of the heavy-fermion caged compound Ce3Pd20X6width='4pt'/>(X=Si,width='4.pt'/>Ge) studied by density functional theory and photoelectron spectroscopy

    SciTech Connect (OSTI)

    Yamaoka, Hitoshi; Schwier, Eike F.; Arita, Masashi; Shimada, Kenya; Tsujii, Naohito; Jarrige, Ignace; Jiang, Jian; Hayashi, Hirokazu; Iwasawa, Hideaki; Namatame, Hirofumi; Taniguchi, Masaki; Kitazawa, Hideaki

    2015-03-30

    The electronic structure of Ce₃Pd₂₀X₆ (X = Si, Ge) has been studied using detailed density functional theory (DFT) calculations and high-resolution photoelectron spectroscopy (PES) measurements. The orbital decomposition of the electronic structure by DFT calculations indicates that Ce atoms at the (8c) site surrounded by 16 Pd atoms have a more localized nature and a tendency to be magnetic. Ce atoms in the (4a) site surrounded by 12 Pd and 6 X atoms, on the other, show only a negligible magnetic moment. In the photoemission valence-band spectra we observe a strong f⁰ (Ce⁴⁺) component with a small fraction of f¹ (Ce³⁺) component. The spectral weight of f¹ component near the Fermi level Ce₃Pd₂₀Si₆ is stronger than that for Ce₃Pd₂₀Ge₆ at the 4d-4f resonance, suggesting stronger c-f hybridization in the former. This may hint to the origin of the large electronic specific coefficient of Ce₃Pd₂₀Si₆ compared to Ce₃Pd₂₀Ge₆.

  3. U.S. Natural Gas Balancing Item (Million Cubic Feet)

    U.S. Energy Information Administration (EIA) Indexed Site

    Balancing Item (Million Cubic Feet) U.S. Natural Gas Balancing Item (Million Cubic Feet) Decade Year-0 Year-1 Year-2 Year-3 Year-4 Year-5 Year-6 Year-7 Year-8 Year-9 1990's 634,809 -111,218 2000's -240,342 134,346 -13,339 -38,495 356,956 134,293 61,404 -196,323 33,472 -89,392 2010's 124,358 -130,108 -123,053 -15,729 -44,437 - = No Data Reported; -- = Not Applicable; NA = Not Available; W = Withheld to avoid disclosure of individual company data. Release Date: 4/29/2016 Next Release Date:

  4. Binary classification of items of interest in a repeatable process

    DOE Patents [OSTI]

    Abell, Jeffrey A; Spicer, John Patrick; Wincek, Michael Anthony; Wang, Hui; Chakraborty, Debejyo

    2015-01-06

    A system includes host and learning machines. Each machine has a processor in electrical communication with at least one sensor. Instructions for predicting a binary quality status of an item of interest during a repeatable process are recorded in memory. The binary quality status includes passing and failing binary classes. The learning machine receives signals from the at least one sensor and identifies candidate features. Features are extracted from the candidate features, each more predictive of the binary quality status. The extracted features are mapped to a dimensional space having a number of dimensions proportional to the number of extracted features. The dimensional space includes most of the passing class and excludes at least 90 percent of the failing class. Received signals are compared to the boundaries of the recorded dimensional space to predict, in real time, the binary quality status of a subsequent item of interest.

  5. SF6432-CI (02-01-12) Commercial Items

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    2/01/12 Page 1 of 14 Printed copies of this document are uncontrolled. Retrieve latest version electronically. SANDIA CORPORATION SF 6432-CI (02/01/12) SECTION II STANDARD TERMS AND CONDITIONS FOR COMMERCIAL ITEMS THE FOLLOWING CLAUSES APPLY TO THIS CONTRACT AS INDICATED UNLESS SPECIFICALLY DELETED, OR EXCEPT TO THE EXTENT THEY ARE SPECIFICALLY SUPPLEMENTED OR AMENDED IN WRITING IN THE COVER PAGE OR SECTION I. (CTRL+CLICK ON A LINK BELOW TO ADVANCE DIRECTLY TO THAT SECTION) ACCEPTANCE OF TERMS

  6. Control of Suspect/Counterfeit and Defective Items

    SciTech Connect (OSTI)

    Sheriff, Marnelle L.

    2013-09-03

    This procedure implements portions of the requirements of MSC-MP-599, Quality Assurance Program Description. It establishes the Mission Support Alliance (MSA) practices for minimizing the introduction of and identifying, documenting, dispositioning, reporting, controlling, and disposing of suspect/counterfeit and defective items (S/CIs). employees whose work scope relates to Safety Systems (i.e., Safety Class [SC] or Safety Significant [SS] items), non-safety systems and other applications (i.e., General Service [GS]) where engineering has determined that their use could result in a potential safety hazard. MSA implements an effective Quality Assurance (QA) Program providing a comprehensive network of controls and verification providing defense-in-depth by preventing the introduction of S/CIs through the design, procurement, construction, operation, maintenance, and modification of processes. This procedure focuses on those safety systems, and other systems, including critical load paths of lifting equipment, where the introduction of S/CIs would have the greatest potential for creating unsafe conditions.

  7. Apparatus and method for identification and recognition of an item with ultrasonic patterns from item subsurface micro-features

    DOE Patents [OSTI]

    Perkins, R.W.; Fuller, J.L.; Doctor, S.R.; Good, M.S.; Heasler, P.G.; Skorpik, J.R.; Hansen, N.H.

    1995-09-26

    The present invention is a means and method for identification and recognition of an item by ultrasonic imaging of material microfeatures and/or macrofeatures within the bulk volume of a material. The invention is based upon ultrasonic interrogation and imaging of material microfeatures within the body of material by accepting only reflected ultrasonic energy from a preselected plane or volume within the material. An initial interrogation produces an identification reference. Subsequent new scans are statistically compared to the identification reference for making a match/non-match decision. 15 figs.

  8. Apparatus and method for identification and recognition of an item with ultrasonic patterns from item subsurface micro-features

    DOE Patents [OSTI]

    Perkins, Richard W.; Fuller, James L.; Doctor, Steven R.; Good, Morris S.; Heasler, Patrick G.; Skorpik, James R.; Hansen, Norman H.

    1995-01-01

    The present invention is a means and method for identification and recognition of an item by ultrasonic imaging of material microfeatures and/or macrofeatures within the bulk volume of a material. The invention is based upon ultrasonic interrogation and imaging of material microfeatures within the body of material by accepting only reflected ultrasonic energy from a preselected plane or volume within the material. An initial interrogation produces an identification reference. Subsequent new scans are statistically compared to the identification reference for making a match/non-match decision.

  9. Method of locating related items in a geometric space for data mining

    DOE Patents [OSTI]

    Hendrickson, Bruce A.

    1999-01-01

    A method for locating related items in a geometric space transforms relationships among items to geometric locations. The method locates items in the geometric space so that the distance between items corresponds to the degree of relatedness. The method facilitates communication of the structure of the relationships among the items. The method is especially beneficial for communicating databases with many items, and with non-regular relationship patterns. Examples of such databases include databases containing items such as scientific papers or patents, related by citations or keywords. A computer system adapted for practice of the present invention can include a processor, a storage subsystem, a display device, and computer software to direct the location and display of the entities. The method comprises assigning numeric values as a measure of similarity between each pairing of items. A matrix is constructed, based on the numeric values. The eigenvectors and eigenvalues of the matrix are determined. Each item is located in the geometric space at coordinates determined from the eigenvectors and eigenvalues. Proper construction of the matrix and proper determination of coordinates from eigenvectors can ensure that distance between items in the geometric space is representative of the numeric value measure of the items' similarity.

  10. Method of locating related items in a geometric space for data mining

    DOE Patents [OSTI]

    Hendrickson, B.A.

    1999-07-27

    A method for locating related items in a geometric space transforms relationships among items to geometric locations. The method locates items in the geometric space so that the distance between items corresponds to the degree of relatedness. The method facilitates communication of the structure of the relationships among the items. The method is especially beneficial for communicating databases with many items, and with non-regular relationship patterns. Examples of such databases include databases containing items such as scientific papers or patents, related by citations or keywords. A computer system adapted for practice of the present invention can include a processor, a storage subsystem, a display device, and computer software to direct the location and display of the entities. The method comprises assigning numeric values as a measure of similarity between each pairing of items. A matrix is constructed, based on the numeric values. The eigenvectors and eigenvalues of the matrix are determined. Each item is located in the geometric space at coordinates determined from the eigenvectors and eigenvalues. Proper construction of the matrix and proper determination of coordinates from eigenvectors can ensure that distance between items in the geometric space is representative of the numeric value measure of the items' similarity. 12 figs.

  11. Consensus Action Items from CHP Roadmap Process, June 2001 | Department of

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

    Energy Consensus Action Items from CHP Roadmap Process, June 2001 Consensus Action Items from CHP Roadmap Process, June 2001 This paper discusses three main objectives in the CHP roadmapping process: raising CHP awareness, eliminating regulatory and institutional barriers, and developing CHP markets and technologies. All levels of government are addressed including state, regional, and federal. PDF icon Consensus Action Items from 2001 CHP Roadmap.pdf More Documents & Publications

  12. Meeting Action Items and Highlights from the Bio-Derived Liquids...

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

    Reforming Working Group (BILIWG) & Hydrogen Production Technical Team Research Review Meeting Action Items and Highlights from the Bio-Derived Liquids to Hydrogen Distributed ...

  13. NQA-1 Requirements for Commercial Grade Item Acceptance: ICONE20-54738

    SciTech Connect (OSTI)

    Van Valkenburg, Taunia S.; Holmes, Richard A.; Tepley, Daniel J.; Sandquist, Gary

    2012-07-19

    Objectives are: (1) Present the DOE Chemistry and Metallurgy Research Replacement (CMRR) Project Commercial Grade Item (CGI) Dedication Process; and (2) Present CMRR Project CGI Lessons-Learned.

  14. Seasonality in the Natural Gas Balancing Item: Historical Trends and Corrective Measures

    Reports and Publications (EIA)

    2010-01-01

    This special report examines an underlying cause of the seasonal pattern in the balancing item published in the Natural Gas Monthly.

  15. Testing of a low-cost item monitoring system

    SciTech Connect (OSTI)

    Frank, D.J.; Cunningham, K.R.; Hoover, C.E.; Trujillo, A.A.

    1988-01-01

    Material control is an important element of any security system which seeks to address the insider threat. Sandia has developed Wireless Alarm Transmission of Container Handling (WATCH) which is a remote sensor system that provides a low-cost, convenient way of monitoring item movement. Rockwell International/Rocky Flats Plant (RFP) and Sandia have conducted a long-term evaluation of the WATCH system in an operating production facility. Testing was conducted in a large scale, remote access storage vault for Special Nuclear Materials (SNM). A total of fourteen WATCH units were placed on storage containers in the vault. A schedule was established which provided prearranged movement of monitored containers on a regular basis. The test objectives were to determine (1) the feasibility of using the WATCH system technology to implement material control concepts, (2) the system performance in an active production area, and high radiation environment, (3) the sensitivity settings required for optimum system performance, and (4) the spatial resolution of the transmitter/receiver utilized.

  16. Testing of a low-cost item monitoring system

    SciTech Connect (OSTI)

    Frank, D.J.; Cunningham, K.R.; Hoover, C.E.; Trujillo, A.A.

    1988-01-01

    Material control is an important element of any security system which seeks to address the insider threat. Sandia has developed Wireless Alarm Transmission of Container Handling (WATCH) which is a remote sensory system that provides a low-cost, convenient way of monitoring item movement. Rockwell International/Rocky Flats Plant (RFP) and Sandia have conducted a long-term evaluation of the WATCH system in an operating production facility. Testing was conducted in a large scale, remote access storage vault for Special Nuclear Materials (SNM). A total of fourteen WATCH units were placed on storage containers in the vault. A schedule was established which provided prearranged movement of monitored containers on a regular basis. The test objectives were to determine 1) the feasibility of using the WATCH system technology to implement material control concepts, 2) the system performance in an active production area, and high radiation environment, 3) the sensitivity settings required for optimum system performance, and 4) the spatial resolution of the transmitter/receiver utilized.

  17. Greener Commercial A/C Units Becoming a Cool Item | Department of Energy

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

    Greener Commercial A/C Units Becoming a Cool Item Greener Commercial A/C Units Becoming a Cool Item July 1, 2010 - 5:11pm Addthis Greener Commercial A/C Units Becoming a Cool Item Stephen Graff Former Writer & editor for Energy Empowers, EERE A new federal tax credit is helping McQuay International expand its line of energy-efficient HVAC products at two of its plants and bring back furloughed workers. With the help of a 48C manufacturing tax credit worth $2 million under the American

  18. Techniques for reducing error in the calorimetric measurement of low wattage items

    SciTech Connect (OSTI)

    Sedlacek, W.A.; Hildner, S.S.; Camp, K.L.; Cremers, T.L.

    1993-08-01

    The increased need for the measurement of low wattage items with production calorimeters has required the development of techniques to maximize the precision and accuracy of the calorimeter measurements. An error model for calorimetry measurements is presented. This model is used as a basis for optimizing calorimetry measurements through baseline interpolation. The method was applied to the heat measurement of over 100 items and the results compared to chemistry assay and mass spectroscopy.

  19. Safeguard Application Options for the Laser-Based Item Monitoring System (LBIMS)

    SciTech Connect (OSTI)

    Laughter, Mark D

    2008-10-01

    Researchers at Oak Ridge National Laboratory (ORNL) are developing a Laser-Based Item Monitoring System (LBIMS) for advanced safeguards at nuclear facilities. LBIMS uses a low-power laser transceiver to monitor the presence and position of items with retroreflective tags. The primary advantages of LBIMS are its scalability to continuously monitor a wide range of items, its ability to operate unattended, its low cost of implementation, and its inherent information security due to its line-of-sight and non-broadcasting operation. The primary proposed safeguard application of LBIMS is described in its name: item monitoring. LBIMS could be implemented in a storage area to continuously monitor containers of nuclear material and the area in which they are stored. The system could be configured to provide off-site notification if any of the containers are moved or removed or if the area is accessed. Individual tags would be used to monitor storage containers, and additional tags could be used to record information regarding secondary storage units and room access. The capability to register small changes in tag position opens up the possibility of several other uses. These include continuously monitoring piping arrangements for design information verification or recording equipment positions for other safeguards systems, such as tracking the opening and closing of autoclaves as part of a cylinder tracking system or opening and closing valves on a sample or product take-off line. Combined with attribute tags, which transmit information from any kind of sensor by modulating the laser signal, LBIMS provides the capability to wirelessly and securely collect safeguards data, even in areas where radio-frequency or other wireless communication methods are not practicable. Four application types are described in this report: static item monitoring, in-process item monitoring with trigger tags, multi-layered integration with trigger tags, and line-of-sight data transfer with attribute tags. Field trials for each of these applications are described.

  20. Joint Meeting on Hydrogen Delivery Modeling and Analysis, May 8-9, 2007, Discussion Session Highlights, Comments, and Action Items

    Broader source: Energy.gov [DOE]

    This summary highlights the disussion session, comments, and action items from the Joint Meeting on Hydrogen Delivery Modeling and Analysis, May 8-9, 2007.

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    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Lab) have recorded the first in situ electronic structure observations of the adsorption of carbon dioxide inside Mg-MOF-74, an open metal site MOF that has emerged as one...

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    peptoid nanosheets as part of an overall field that is exploring how this synthetic nanomaterial can be used more broadly in drug discovery, diagnostics, and drug delivery. Accolla...

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    lens aberrations due to 2- and 3- fold astigmatism, coma, and spherical aberration. Holography Electron holography can produce high-resolution images by recording images...

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    After receiving his B.S. from the University of Minnesota and Ph.D. from Cornell University, Neaton spent three years in the Rutgers Physics Department, where he was a postdoctoral ...

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    Smart Windows: Behind the Scenes The Molecular Foundry's Delia Milliron, with colleagues from the Environmental Energy Technologies Division, are working on creating smart window...

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    Such signals are, in principle, sensitive down to the single carrier within the OLED, since the measurement reports on spin permutation symmetry rather than on thermal spin...

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    Hosted by Frank Svec: Many emerging spintronics applications will utilize dense arrays of nanomagnetic elements. Device properties depend on both the intrinsic material properties ...

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    by the nation's investment in nanotechnology through the NNI. The first, found on page 10, describes the work of Molecular Foundry scientists who developed electrochromic...

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    Mimicking Nature for Homeland Security Biological Nanostructures Facility Director, Ron ... lethal chemical agents or deadly viruses deployed during warfare or a terrorist attack. ...

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    properties of colloidal indium tin oxide (ITO) nanocrystals. Significance and Impact Understanding the connection between the structural and optoelectronic properties...

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    Efficient Conversion of Carbon Monoxide to Liquid Fuel Electron microscopy images of copper electrodes at various magnifications. Top row: the copper nanoparticle electrode. Middle ...

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    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    about 2D Molybdenum Disulfide Scientists at the Molecular Foundry have used a unique nano-optical probe to study the effects of illumination on two-dimensional semiconductors at...

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    Study Reveals How Oxygen is Like Kryptonite to Titanium Scientists working at the Molecular Foundry have found the mechanism by which titanium, prized for its high ...

  1. News Item

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Oxygen: Poison to Titanium In situ TEM nanocompression tests of Ti (above). Imaging of ... Scientists working at the Molecular Foundry have found the mechanism by which titanium ...

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    nearly exponential growth in the science and technology of two-dimensional materials. Beyond graphene, there is a huge variety of layered materials that range in properties...

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    Two Small Business Users Awarded ARPA-E Funding Part of Cyclotron Road at Berkeley Lab, ... awarded a total of 125 million by DOE's ARPA-E. Spark Thermionics, led by Dan Riley and ...

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    Riley and Schwede's thermionics collaboration was recently awarded 3.8 million from the Department of Energy's Advance Research Projects Agency--Energy (ARPA-E), which they will ...

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    of Individual Atoms Scientific Achievement Using the Molecular Foundry's TEAM I microscope, an international collaboration of users and staff measured the 3D coordinates of...

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    be. Now, users from UCLA have partnered with Molecular Foundry staff to use the TEAM microscope to image the three-dimensional positions of individual atoms to a precision of 19...

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    19, 2016 Time: 11:00 am Speaker: Michael Hecht, Princeton University Title: Sustaining Life with Genes and Proteins Designed De Novo Location: 67-3111 Chemla Room Bio: Michael...

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    microscopy for decades, well known for their advancements in materials science, electron detector development and structural biology respectively, making the Lab a global center...

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    8, 2013 Jeff Urban Joins Eight Researchers in Sharing "Big Ideas" at Science at the Theatre Eight LBNL scientists including Jeff Urban, Director of the Inorganic Nanostructures Facility at the Molecular Foundry, presented eight game-changing concepts in eight minutes as part of the Science at the Theater on Monday, Oct. 28, at the Berkeley Repertory Theater (Roda Stage). In addition to Urban's talk on "synergist materials for energy applications," which can be viewed here,

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    4, 2014 Foundry Scientist Presented Next Big Tech Idea at 'Science at the Theater' Event Like a science version of the popular show "Shark Tank," the Lab's next Science at the Theater event featured researchers "pitching" their technologies, followed by audience members and a panel of judges determining which one most benefits society. The event took place at the Berkeley Repertory Theater. In addition to Gloria Oliver's introduction of Molecular Velcro (the winner of the

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    17, 2014 Foundry's Jim Schuck Featured on DOE's #LabChat: The Science of the Very Small The #LabChat included Dr. Jim Schuck, Director of the Imaging and Manipulation of Nanostructures Facility at Berkeley Lab's Molecular Foundry; Dr. Adam Rondinone, Task Leader for Catalysis and Industrial Liaison at Oak Ridge National Lab's Center for Nanophase Materials Sciences; and Dr. James Dickerson, Assistant Director for the User Program and External Affairs at Brookhaven National Lab's Center for

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    August 2, 2013 Time: 11:00 am Speaker: Prof. Lian-Mao Peng, Peking University Title: Carbon Nanotube Electronics: Extending the Moore Law to the End of the Roadmap and Beyond Location: 67-3111 Chemla room Hosted by: Gary Ren Carbon nanotubes (CNT) are quasi-one-dimensional materials with unique properties and are ideal material for nanoelectronics. In particular, perfect n-type [1-2] and p-type [3] contacts are now available for controlled injection of electrons into the conduction band and

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    6, 2013 Time: 11:00 am Speaker: Prof. Andrew Canning , LBNL Title: First-principles Electronic Structure Calculations for Scintillation Phosphor Nuclear Detector Materials Location: 67-3111 Chemla room Hosted by Jim Schuck Inorganic scintillation phosphors (scintillators) are extensively employed as radiation detector materials in many fields of applied and fundamental research such as medical imaging, high energy physics, astrophysics, oil exploration and nuclear materials detection for

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    27, 2013 Time: 11:00 am Speaker: Prof. W.E. Moerner, Stanford University Title: Single-Molecule Spectroscopy and Imaging: 3D Nanoscopy and Biomolecular Dynamics Location: 67-3111 Chemla room Hosted by Jim Schuck Since the first optical detection and spectroscopy of a single molecule in a condensed phase host in 1989, a wealth of new information has been obtained from time-dependent measurements and single-molecule probability distributions. When single-molecule labels acting as tiny nanoscale

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    3, 2013 Time: 11:00 am Speaker: Alex Weber-Bargioni, The Molecular Foundry Title: Investigating the Propagation of Optically Excited States and Optoelectronic Processes in Nano Building Block Assemblies Location: 67-3111 Chemla room Controlling individual excited states and their deliberate movement through a material is one of the ultimate goals that will provide material scientist with a complete new freedom to develop novel material functionalities. Realizing such a control would enable to

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    17, 2013 Time: 11:00 am Speaker: Steve Granick, the University of Illinois Title: Fun and Profit with Soft Materials Location: 67-3111 Chemla room Hosted by Wendy Queen A fundamental materials challenge is to form structure that is not frozen in place but instead reconfigures internally driven by energy throughput and adapts to its environment robustly. Predicated on fluorescence imaging at the single-particle level, this talk describes quantitative studies of how this can happen. With Janus

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    , 2013 Time: 11:00 am Speaker: Mikhail Zamkov, Bowling Green State University Title: Engineering of Semiconductor Nanocrystals & Nanocrystal Solids for Renewable Energy Applications Location: 67-3111 Chemla room Hosted by Delia Milliron: I will discuss a novel methodology for depositing colloidal semiconductor nanocrystals into all-inorganic solid films with implications both to nanocrystal solar cells and nanocrystal light-emitting devices. The reported strategy utilizes a simple scheme for

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    9, 2013 Time: 11:00 am Speaker: Francesca Morabito, University of Catania, Italy Title: An Analysis of the Molecular Foundry's Industrial Collaborations: Recommendations for Program Enhancements and Changes Location: 67-3111 Chemla room Results of an investigation into multiple aspects of previous collaborations between The Molecular Foundry and industry will be presented. The purpose of this analysis is to enhance understanding of the relationship complexities between government-funded User

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    15, 2013 Time: 11:00 am Speaker: Paul Abbyad, Santa Clara University Title: Microfluidic Droplet Arrays for the Study of Red Blood Cell Sickling Location: 67-3111 Chemla room We have developed a novel microfluidic device to study individual red blood cells in droplet arrays. This is a two-phase system where aqueous droplets containing cells are produced and transported in inert carrier oil. Droplets are anchored into an array by the reduction in their surface energy as they enter into

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    2, 2013 Time: 11:00 am Speaker: Gordana Dukovic, University of Colorado, Boulder Title: Photophysics and Photochemistry of Nanoscale Semiconductors Location: 67-3111 Chemla room Colloidal semiconductor nanocrystals are remarkably versatile materials that exhibit a high degree of tunability in electronic structure, optical spectra, and surface properties. They are generally strong light absorbers and have potential applications in solar energy harvesting. My research group is focused on the

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    9, 2013 Time: 11:00 am Speaker: David Britt, LBNL Title: Steps Toward Controlling her External Surface Chemistry of Metal-organic Frameworks Speaker: Dianne Xiao, UC Berkeley Title: Iron Metal-organic Frameworks for Hydrocarbon Oxidations Location: 67-3111 Chemla room Pizza will be served, compliments of Oxford Instruments

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    December 12, 2013 Time: 11:00 am Speaker: Dr. Dr. Peter Gregory, Editor in Chief, Advanced Materials Title: Publishing Trends in Science and How to Survive Peer Review Location: 66-Auditorium Dr. Gregory will reflect on publishing developments over the last 25 years (while celebrating 25 years ofAdvanced Materials) and concentrate on the factors which influence competitiveness, cost, and international character of scientific communication. He will also describe the peer review process "from

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    8, 2014 Time: 11:00 am Speaker: Dr. Ales Hrabec, Leeds University, UK Title: DMI meter: Dzyaloshinskii-Moriya interaction in Pt/Co/Ir films Location: 67-3111 Chemla Room Hosted by Andreas Schmid Abstract: The Dzyaloshinskii-Moriya interaction (DMI) can be measured via several techniques but the magnetic field-based method avoids all the problems with patterning and potential mixing with current-related effects such as the Spin Hall Effect or the Rashba field. It has been suggested that the

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    4, 2014 Time: 11:00 am Speaker: Dr. David Baker, University of Washington Title: Design of Protein Structures, Functions and Assemblies Location: 67-3111 Chemla Room Hosted by Ron Zuckermann Abstract: I will describe recent advances in computational protein design which allow the generation of new protein structures and functions. I will describe the use of these methods to design ultra-stable idealized proteins, flu neutralizing proteins, high affinity ligand binding proteins, and self

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    February 6, 2014 Time: 11:00 am Speaker: Dr. Alexandros Lappas, Institute of Electronic Structure and Laser, Crete, Greece Title: Properties and Applications of Surface-stabilised Iron-Oxide Magnetic Nanoclusters Location: 67-3111 Chemla Room Hosted by Stefano Cabrini Abstract: Multifunctional iron-oxide nanocrystals pave the way for solutions in problems of practical importance to the society, ranging from electronics to diagnosis and therapy. In view to this, we employ modular colloidal

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    1, 2014 Time: 11:00 am Speaker: Dr. Hou-Tong Chen, Center for Integrated Nanotechnologies, LANL Title: Terahertz Metamaterials - Structure Design, Material Integration and Emergent Functionality Location: 67-3111 Chemla Room Hosted by Jim Schuck Abstract: The control of electromagnetic radiation lies at the core of many modern technologies. Naturally occurring materials provide only limited electromagnetic response, insufficient for emerging technologies with increasingly demanding requirements.

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    8, 2014 Time: 11:00 am Speaker: Dr. Frank Q. Zhu, HGST Title: Controlled Nucleation Growth of Granular Thin Films by Templating Effect and Self-Assembly Location: 67-3111 Chemla Room Hosted by Deirdre Olynick Abstract: Control of thin film grain size in the range of 5~15nm as well as grain size uniformity is a challenging yet crucial task for modern high performance thin film devices. There is no existing lithography technique that can readily accomplish this task at wafer scale. I will present

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    5, 2014 Time: 11:00 am Speaker: Prof. Ke Xu, UC Berkeley Title: Super-Resolution Fluorescence Microscopy: New Biology Revealed by Sub-10 nm Resolution Location: 67-3111 Chemla Room Hosted by Bruce Cohen Abstract: Fluorescence microscopy is an indispensable tool for biology. It provides the distinct advantages of being noninvasive and molecular specific, and so permits the real-time observation of specific molecular targets in live cells with high contrast. A drawback of fluorescence microscopy,

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    4, 2014 Time: 11:00 am Speaker: Prof. Matthew Pelton, University of Maryland, Baltimore Title: Optical Studies of Nanoscale Physics: Semiconductor Nanoplatelets, Vibrating Metal Nanoparticles, and Metal-Semiconductor Assemblies Location: 67-3111 Chemla Room Hosted by Stefano Cabrini Abstract: Semiconductor nanocrystals and metal nanoparticles are key building blocks for nanophotonics, because they both interact strongly with light in a way that can be tuned by changing the size, shape, and

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    Tuesday, March 11, 2014 Time: 11:00 am Speaker: Dr. Peter Fischer, Center for X-ray Optics, LBNL Title: Full-field soft x-ray microscopy: a unique tool for nano- and mesoscience Location: 67-3111 Chemla Room Image of Peter Fischer Abstract: For more than a decade research has focused on a fundamental understanding and control of nanoscale behavior. Recently, it has been recognized, that the next step beyond the nanoscale will be governed by mesoscale phenomena [1], since those are supposed to

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    29, 2014 Time: 11:00 am Speaker: Prof. Kevin Webb, Purdue University Title: Nanostructured Materials for Optical Sensing, Control and Signal Processing Location: 67-3111 Chemla Room Hosted by Alex Weber-Bargioni Abstract: I summarize some of our recent accomplishments related to metamaterials, including the proposal of a graphene stack as the blackest material. Relying on fundamental principles, I suggest opportunities for the synthesis of new material mixtures, including active materials that

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    3, 2014 Time: 11:00 am Speaker: Jeff Neaton, Molecular Foundry Title: Nanoscale Perspectives on Organic Energy Materials from Ab Initio Quantum Mechanics Location: 67-3111 Chemla Room Abstract: New materials, architectures, and concepts are needed to realize many low-cost, sustainable energy conversion and carbon mitigation applications. Organic semiconductors and metal-organic frameworks (MOFs) comprise two promising classes of materials in this respect. These complex, tunable materials exhibit

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    0, 2014 Time: 11:00 am Speaker: William Chueh, Stanford University Title: Ion Intercalation in Materials for Batteries and Fuel Cells Location: 67-3111 Chemla Room Abstract: Electrochemistry plays a crucial role in virtually all energy storage and conversion technologies, such as batteries, fuel cells, and artificial leaves. Intercalation processes, such as those involving lithium and oxygen ions in solids, are ubiquitous. Unlike electrochemical reactions on metal surfaces, intercalation

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    7, 2014 Time: 11:00 am Speaker: Jason D. Azoulay, University of Southern Mississippi Title: Narrow Band Gap Conjugated Polymers for Emergent Electronic Technologies Location: 67-3111 Chemla Room Abstract: Research in the field of organic semiconducting materials has allowed for the development of commercially relevant technologies such as organic thin-film transistors (OTFTs), light-emitting diodes (OLEDs), photovoltaics (OPVs), sensors, molecular electronics and biocompatible medical materials.

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    , 2014 Time: 11:00 am Speaker: Delia Milliron, Department of Chemical Engineering, University of Texas at Austin Title: The Role of Surfaces and Interfaces in Nanocrystal-Based Materials Location: 67-3111 Chemla Room Abstract: In materials constructed from few-nanometer scale building blocks, a large fraction of the total volume lies within a few atomic layers of a surface or an interface. Within the context of plasmonic metal oxide nanocrystals, I will describe a few examples of how these

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    7, 2014 Time: 11:00 am Speaker: Eva Nogales, UC Berkeley Title: Visualization of biological macromolecular complexes by Cryo-EM Location: 67-3111 Chemla Room Abstract: The molecular tasks required for the functioning of the cell are carried out by large molecular machines made of proteins or protein-nucleic acid complexes. Visualizing the structures of such complexes, especially in more than one functional state, is crucial for a mechanistic understanding of cellular function that can ultimately

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    4, 2014 Time: 11:00 am Speaker: Bruce Cohen, Molecular Foundry Title: Zapping Ugly Ducklings into Swans: Weakly Luminescent Nanocrystals that Make Exceptional Single-Molecule Imaging Probes Location: 67-3111 Chemla Room Abstract: Imaging complex materials at the single-molecule level reveals heterogeneities that are lost in ensemble imaging experiments. An ongoing challenge is the development of probes with the photostability, brightness, and continuous emission necessary at higher

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    8, 2014 Time: 11:00 am Speaker: Eli Yablonovitch, UC Berkeley Title: Regenerative Thermo-PhotoVoltaics, a New Opportunity in Radiative Science Location: 67-3111 Chemla Room Abstract: Recent breakthroughs in the understanding of solar cells have led to new record efficiencies. Like all new scientific developments, there are repercussions that extend into new and unexpected areas. Serendipitously, the need for high internal reflectivity in the record- breaking solar cells has solved a

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    0, 2014 Time: 11:00 am Speaker: Susanne Stemmer, UC Santa Barbara Title: Structure and Properties of Oxide Heterostructures Location: 67-3111 Chemla Room Abstract: This talk will focus on recent research activities in our group in the areas of advanced structural characterization, growth, and properties of oxide thin films and heterostructures. In the first part of this presentation we discuss recent progress in developing quantitative scanning transmission electron microscopy (STEM) techniques.

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    4, 2014 Time: 11:00 am Speaker: Michael Roukes, Caltech Title: Integrated Neurophotonics: A Vision for Massively-Parallel Interrogation of Brain Activity Location: 67-3111 Chemla Room Abstract: In 2011, six U.S. scientists from different disciplines banded together, outlined a vision [1], and managed to convince the Obama administration of the unprecedented opportunity that now exists to launch a coordinated, large-scale effort to map brain activity. This culminated in the U.S. BRAIN Initiative

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    1, 2014 Time: 11:00 am Speaker: Axel Brunger, Department of Molecular and Cellular Physiology, Stanford University, HHMI Title: Molecular Mechanisms of Neurotransmitter Release Location: 67-3111 Chemla Room Abstract: The central nervous system relies on electrical signals traveling along neurons and through synapses at high speeds. Signals often have to pass between two neurons, or from a neuron to a muscle fiber, and the nervous system relies on a process called membrane fusion to ensure that

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    8, 2014 Time: 11:00 am Speaker: Xiang Zhang, Lawrence Berkeley National Laboratory Title: Molecular Foundry/ALS Joint Seminar: Metamaterials with Properties that Do Not Exist in Nature Location: Building 66 Auditorium Abstract: Recent theory predicted a new class of photonic composite materials that its properties are derived by the structure rather than chemical compositions which promise unprecedented electromagnetic properties that do not exist in the nature such as optical magnetism and

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    4, 2014 Time: 11:00 am Speaker: Felix Fischer, UC Berkeley Title: Teaching Polymers the Meaning of Life and Confining Electrons in Graphene nanoribbons Location: 67-3111 Chemla Room Abstract: The exponentially increasing demand for ever smaller, faster, and more energy efficient electronic devices represents a monumental challenge in designing the next generation of post-silicon advanced functional materials. Traditionally, device architectures based on inorganic semiconductors are fabricated

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    3, 2015 Time: 11:00 am Speaker: Stacey Bent, Stanford Title: Improving Energy Conversion with Nanoscale Materials Location: 67-3111 Chemla Room Abstract: With the intensifying global need for alternative energy, there is strong interest in new approaches to materials for sustainable energy devices. Underlying a diverse set of energy conversion devices are similar physical and chemical phenomena, many of which can be controlled with nanoscale materials. This talk will describe research on

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    0, 2015 Time: 11:00 am Speaker: Oren Scherman, Cambridge University Title: Dynamic Host-Guest Interactions at the Interface between Supramolecular Chemistry and Materials Science Location: 67-3111 Chemla Room Abstract: We are interested in the development of controlled polymer architectures, hybrid nanoparticle-soft matter assemblies and the integration of dynamic supramolecular systems at interfaces. Current research projects in the group include the application of macrocyclic host-guest

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    7, 2015 Time: 11:00 am Speaker: Wilson Ho, UCI Title: Molecular Foundry/ALS Joint Seminar: Imaging Bonds and Chemical Interactions Location: Building 66 Auditorium Abstract: Chemistry is concerned with the transformation of molecules. It is, however, an abstract subject because its participants are atoms and molecules that are difficult to be seen in detail due to their small dimensions. Furthermore, molecules are depicted as collections of spatially arranged atoms, joined to each other by

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    4, 2015 Time: 11:00 am Speaker: Michael A. Guillorn, IBM T. J. Watson Research Center Title: Self-assembled, self-aligned and self healing: CMOS scaling enabled by stochastic suppression at the nanoscale Location: 67-3111 Chemla Room Abstract: The end of CMOS density scaling has been erroneously predicted by a number of authors for several decades. A review of some of this work was presented by Haensch, et al[1]. Many of these predictions arose from a belief that the only possible solutions to

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    0, 2015 Time: 11:00 am Speaker: Karsten Reuter, Technische Universität München Title: First-Principles Embedding Approaches for Energy Science Location: 67-3111 Chemla Room Abstract: Detailed insight into surface molecular processes is the key driver for advances in application areas as diverse as heterogeneous catalysis, molecular electronics or drug delivery. While predictive-quality computational modeling assumes an increasing role in providing this insight, current methodology still

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    7, 2015 Time: 11:00 am Speaker: Alec Talin, Sandia National Laboratories (Livermore) Title: Achieving Emergent Properties for Electronic and Energy Conversion Device Applications Location: 67-3111 Chemla Room Abstract: Metal-organic frameworks (MOFs) are extended, crystalline compounds consisting of metal ions interconnected by organic ligands, forming scaffolding-like structures that are sometimes referred to as "molecular tinker toys". MOFs have attracted considerable attention for

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    17, 2015 Time: 2:00 pm Speaker: Artur Braun, Empa. Swiss Federal Laboratories for Materials Science and Technology Title: Changes in photoanodes during solar water oxidation, the wet part of artificial photosnythesis Location: 15-253 Abstract: We know photosynthesis as the natural, biological process where sunlight is used to oxidize water molecules and reduce carbon dioxide molecules and convert those into carbohydrates. One can mimic this process with inorganic components in

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    9, 2015 Time: 11:00 am Speaker: Doug Natelson, Rice University Title: Vibrational and Electronic Heating in Atomic-Scale Junctions Location: 67-3111 Chemla Room Bio: My research group focuses on the electronic, magnetic, and (recently) optical properties of nanoscale structures. Over the last twenty years there has been tremendous progress in the ability to manipulate matter at levels approaching the atomic scale. By constructing model nanosystems (nanoparticle, nanowires, atomic-scale

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    6, 2015 Time: 11:00 am Speaker: David Masiello, University of Washington Title: A Taxonomy of the Magneto-Optical Responses of Cyclic Plasmon-Supporting Metal Oligomers Location: 67-3111 Chemla Room Abstract: In this talk I will explore the optical-frequency magnetic and electric properties of cyclic plasmon-supporting metal nanoparticle oligomers through a combination of scanning transmission electron microscopy (STEM)/electron energy-loss spectroscopy (EELS) simulation and first-principles

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    2, 2015 Time: 11:00 am Speaker: Gao Liu, LBNL Title: Mesoscale Origin of the Enhanced Cycling-Stability of the Si-Functional Conductive Polymer Anode for Li-ion Batteries Location: 67-3111 Chemla Room Abstract: Electrode used in lithium-ion battery is invariably a composite of multifunctional components. The performance of the electrode is controlled by the interactive function of all components at mesoscale. The functions of each component and its interaction in mesoscale will be discussed.

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    9, 2015 Time: 11:00 am Speaker: Mark Stockman, University of Georgia Title: Latest Progress in Spasers Location: 67-3111 Chemla Room Abstract: Nanoplasmonics deals with collective electron excitations at the surfaces of metal nanostructures, called surface plasmons. The surface plasmons localize and nano-concentrate optical energy creating highly enhanced local fields. Nanoplasmonics has numerous applications in science, technology, biomedicine, environmental monitoring, and defense. There is an

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    3, 2015 Time: 11:00 am Speaker: David Norris, ETH Zurich Title: Quantum-Dot Plasmonics Location: 67-3111 Chemla Room Abstract: Quantum optics involves the coupling of quantum emitters to their electromagnetic environment. Because this coupling is related to the concentration of the optical field, it is typically constrained by the diffraction limit of light. One way to circumvent this is by moving to quantum plasmonics, which uses surface plasmon polaritons (SPPs) instead of photons. However,

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    30, 2015 Time: 11:00 am Speaker: Klaus van Benthem, UC Davis Title: Evolution of Interface Structures Under Externally Applied Stress Location: 67-3111 Chemla Room Bio: Klaus van Benthem is interested in the investigation of the functionalities of novel nano-materials. He uses electron microscopy tools to image nano-materials with atomic resolution and correlate their morphologies and atomic structures with nano-scale and macro- scale physical properties. His interests are also in the

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    7, 2015 Time: 11:00 am Speaker: David Ginger, University of Washington Title: Molecular Foundry/ALS Joint Seminar: Imaging Heterogeneity in Thin Film Solar Cells: Polymers to Perovskites Location: Building 66 Auditorium Abstract: Many semiconductors - including conjugated polymers, colloidal quantum dots, and organometal halide perovskites - can be processed inexpensively from solution to produce large area flexible electronic devices such as solar cells. However, unlike traditional

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    3, 2015 Time: 11:00 am Speaker: Timothy Lu, MIT Title: Engineering Living Cells for Human Health Applications Location: 67-3111 Chemla Room Abstract: Over the last 50 years, exponential increases in our ability to manipulate electrons and engineer electronic systems spawned the information technology revolution. Similarly rapid improvements in technologies for reading and writing DNA are now transforming our capacity to engineer biological systems. Leveraging these technologies, synthetic

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    8, 2016 Time: 11:00 am Speaker: Christian Dwyer, Arizona State University Title: Utilizing Inelastically Scattered Electrons in the Transmission Electron Microscope Location: 67-3111 Chemla Room Bio: Christian Dwyer is an electron microscopist with backgrounds in scattering and condensed-matter physics. He is an Associate Professor in the Department of Physics at Arizona State University. He obtained his PhD at the University of Cambridge in 2004, and has worked in academic/research institutes

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    In-Situ Specifications Specifications Accel. voltage: 300 kV Point-to-point resolution, wide gap 2.1 Å Point-to-point resolution, narrow gap 1.7 Å Specimen Stages Single-tilt heating to 1300° C ±40° Double-tilt heating to 1000°C ±40°/±40° Single-tilt electrical biasing ±40° Mechanical testing ±40° LN cold stage ±40°

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    FEG Specifications Specifications Accel. Voltage: 200 kV Spherical Aberration Cs: 1.2mm Chromatic Aberration Cc: 1.2mm Detectors Oxford INCA energy dispersive X-ray detector with energy resolution of 136eV for Mn k-alpha radiation. Gatan Imaging Filter with 1kx1k CCD camera and energy resolution of .9 eV with 1nm spatial resolution. Specimen stages Philips double tilt low background holder - ±30°/±30° Philips single tilt low background holder - ± 30° Gatan 652-Ta double tilt heating

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    Specifications Ion column Electron column Accel. voltage 10-30 kV 0.2 - 30 kV Resolution 7 nm 3 nm

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    LIBRA Specifications Resolution Point-to-Point 0.29 nm Information limit 0.19 nm Energy resolution 0.7 eV without monochromator 0.15 eV with monochromator STEM Spatial Resolution BF/DF 0.45 nm HAADF (attainable) 0.45 nm Electron emitter ZrO/W-field emitter system (Schottky) Illumination System Parallel wide field TEM mode 0.1 urad to 20 mrad illumination aperture Objective lens: HT objective Cs (Spherical aberration) 2.2 mm Cc (Chromatic aberration) 2.2 mm Specimen Stage Double tilt holder angle

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    1 Specifications Specifications 300 kV Monochromator ON Monochromator OFF Information limit 0.05 nm (at 0.15 eV) 0.05 nm STEM resolution 0.078 nm 0.05 nm Energy resolution (EELS) 0.15 eV 0.8 eV TEM 3rd order spherical aberration <1 µm, adjustable (± 50 µm) TEM 5th order spherical aberration ~4 mm STEM 3rd order spherical aberration <0.5 µm STEM 5th order spherical aberration <0.5 mm Specifications 80 kV Monochromator ON Monochromator OFF Information limit 0.07 nm (at 0.2 eV) 0.15 nm

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    0.5 Specifications Specifications 300 kV Monochromator ON Monochromator OFF Information limit 0.05 nm (at 0.15 eV) 0.08 nm STEM resolution 0.1 nm 0.05 nm Energy resolution (EELS) 0.10 eV 0.8 eV TEM 3rd order spherical aberration <1 µm, adjustable (± 50 µm) TEM 5th order spherical aberration ~5 mm STEM 3rd order spherical aberration <0.5 µm STEM 5th order spherical aberration <0.5 mm Specifications 80 kV Monochromator ON Monochromator OFF Information limit 0.07 nm (at 0.2 eV) 0.15 nm

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    Tecnai Specifications Specifications Accel. Voltage: 200 (and 120) kV Spherical Aberration Cs: 0.5 mm Chromatic Aberration Cc: 1.1 mm HRTEM Scherzer resolution 0.19 nm Information limit (monochromator off) 0.12 nm STEM Spatial Resolution Monochromator off 0.14 nm Monochromator on 1.0 nm EELS Energy Resolution Monochromator off 500 meV Monochromator on 150 meV

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    TITAN X Specifications General Accelerating Voltage 60, 80, 120, 200, and 300 kV Spherical Aberration Cs 1.2 mm Chromatic Aberration Cc: 1.2 mm Detectors EDS Four windowless silicon drift detectors with a total solid angle of 0.7 steradians and 140 eV energy resolution. STEM Gatan HAADF HRTEM Gatan UltraScan 1000 2k x 2k CCD Diffraction/Movies Gatan Orius 830 2k x 2k CCD; 30 fps Specimen stages FEI low background double tilt for EDS - ±40°/±40° Hummingbird Tomography holder for tomography

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    New and Improved Model of Molecular Bonding Jim DeYoreo of the Molecular Foundry led the development of a first-of-its-kind model for providing a comprehensive description of the way in which molecular bonds form and rupture. This enables researchers to predict the "binding free energy" of a given molecular system, a key to predicting how that molecule will interact with other molecules. Go here to read the paper. The work was a collaboration with Ray Friddle of the Sandia National

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    Three Foundry Scientists Honored with Director's Awards for Exceptional Achievement Congratulations to Molecular Foundry winners of the 2013 Director's Awards for Exceptional Achievement! Jim Schuck and Alex Weber-Bargioni: Early Scientific Career Award for their work on nanoscale optical imaging and spectroscopy Ron Zuckermann: Safety Award for his leadership in promoting a culture of safety The Director's Awards honor exceptional achievements by laboratory employees that advance the Lab's

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    Protein Folding Funnels Apply to Self-Assembly; Should Benefit Biomimicry and Nanosynthesis Jim DeYorero and Carolyn Bertozzi led a team of researchers at the Molecular Foundry that demonstrated the concept that folding funnels applies equally to individual and ensembles of proteins. Their findings provide important guidelines for future efforts in biomimicry - technological innovation inspired by nature - particularly for device fabrication and nanoscale synthesis. Also working on this study

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    Molecular Foundry Spin-Off Company Wins the NOVA Innovation Competition Heliotrope Technologies, a Molecular Foundry spinoff company, has been declared the winner of the 2012 NOVA Innovation Competition. An Oakland, CA based start-up, Heliotrope works to develop energy-efficient electrochromic window coatings that can switch reversibly between three states: solar transparent, heat blocking, and heat and light blocking.

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    Milliron wins ARPA-E Grant Awards to Advance Energy Efficiency and Storage In the recently announced "OPEN 2012" funding opportunity from the Department of Energy's Advanced Research Projects Agency-Energy (ARPA-E), Delia Milliron of the Molecular Foundry received a grant of $3 million for her work on smart window technologies, in partnership with scientists in Berkeley Lab's Environmental Energy Technologies Division (EETD) and Heliotrope Technologies. The project will seek to enhance

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    Arron Phillips Shakes Up Science at the Foundry Sometimes you need to shake up your perspective in order to do good science. So says Molecular Foundry intern Arron Phillips, who has captured some artistic views of her research on metal-organic frameworks (MOFs). Shown here is her color-altered photograph of MOF-199 samples, one of the best-known materials in that family of porous crystals. Visiting from the University of Florida, Phillips says she enjoys using photography as a way to shake up

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    Seeing in Color at the Nanoscale: Foundry Scientists Develop a New Nanotech Tool to Probe Solar Energy Conversion If nanoscience were television, we'd be in the 1950s. Although scientists can make and manipulate nanoscale objects with increasingly awesome control, they are limited to black-and-white imagery for examining those objects. Information about nanoscale chemistry and interactions with light-the atomic-microscopy equivalent to color-is tantalizingly out of reach to all but the most

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    Foundry User Alveo Energy Receives $4M from ARPA-E Alveo Energy-a Bay Area start-up company and Molecular Foundry user-has been awarded $4 million by ARPA-E for their project, "Open Framework Electrode Batteries for Cost-Effective Energy Storage." This venture seeks to develop a new class of batteries based on the pigment Prussian Blue to provide efficient, cost-effective support of renewable energy sources. "This ARPA-E award is an enormous opportunity for Alveo." says Colin

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    3 Black Gold Makes Bright Beams For the high-rep-rate x-ray beams essential to next generation light sources, electron guns with photocathodes that can deliver tight electron bunches with high charge and high energy are essential. Early this week Physical Review Letters posted reports of two nanoscale arrays for photocathodes using resonating plasmons, based on principles developed by Howard Padmore of the Advanced Light Source (ALS). Led by the Molecular Foundry's Alex Polyakov, one design is

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    Weber-Bargioni Shares Love of Bike Racing with Local Community If you've ever tried to take a sharp turn at high speed on a bicycle, you may have wished you knew more about bicycle physics. And while the basic movement feels simple, riding a bike is in fact quite complex. "It turns out the physics of riding a bike are really, really hard," confessed Alex Weber-Bargioni, a Berkeley Lab materials scientist. Weber-Bargioni was addressing a standing-room-only crowd at the Actual Café in

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    Three Foundry Scientists Honored with Director's Awards for Exceptional Achievement Congratulations to the winners from the Molecular Foundry of the 2013 Director's Awards for Exceptional Achievement! Jim Schuck and Alex Weber-Bargioni: Early Scientific Career Award for their work on nanoscale optical imaging and spectroscopy Ron Zuckermann (pictured with LBL Director Paul Alivisatos): Safety Award for his leadership in promoting a culture of safety The Director's Awards honor exceptional

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    Frank Svec: Using Gold to Boost Power of Chromatography MSD scientist Frantisek Svec, director of the Organic and Macromolecular Synthesis facility at the Molecular Foundry, described a technique for boosting the power of chromatography for separating proteins and peptides. Speaking at the recent national meeting of the American Chemical Society, Svec explained how the addition of gold nanoparticles to the surfaces of polymer monoliths in chromatographs creates a universal ligand that can be

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    Foundry's Ritankar Das is Campus's Top Graduating Senior With a double major in bioengineering and chemical biology, and a minor in creative writing, UC Berkeley student Ritankar Das has been named the campus's University Medalist, recognizing him as the top graduating senior. And he's only 18. And he did it in only three years. He works with Lab materials scientist Frank Ogletree in the Molecular Foundry. [MORE]

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    Foundry Researchers Receive Two 2013 R&D 100 Awards Congratulations to the Molecular Foundry's award-winning innovators! Presented by R&D Magazine, the R&D 100 Awards recognize the year's top 100 technology products from industry, academia, and government-sponsored research, ranging from chemistry to materials to biomedical breakthroughs. Of the record eight awards that recognized Berkeley Lab research, two came from work at the Molecular Foundry. A team led by Delia Milliron

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    Rachel Segalman Appointed Acting Division Director for Materials Sciences Rachel Segalman has been appointed as the acting director of the Materials Sciences Division, effective July 8. The Molecular Foundry is a part of the Material Sciences Division. She is the lead principal investigator for the Thermoelectrics Program and project leader for the Membranes and Mesoscale Assembly at the Joint Center for Artificial Photosynthesis (JCAP). Segalman is also a professor of chemical engineering at UC

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    Ron Zuckermann Discusses his 'Big Idea' in 'Science at the Theater' talk Berkeley Lab's recent 'Science at the Theater' event featured eight researchers, each give 8 minutes to present a "big idea." Ron Zuckermann, from the Molecular Foundry, spoke about his work with synthetic proteins and how we can mimick Nature to make better materials. Catch Zuckermann around the 45:00 point, and don't miss a lively Q & A session at the end

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    3 Raising the IQ of Smart Windows Researchers at the Molecular Foundry have designed a thin coating of nanocrystals embedded in glass that can dynamically modify sunlight as it passes through a window. Unlike existing technologies, the coating provides selective control over visible light and heat-producing near-infrared (NIR) light, so windows can maximize both energy savings and occupant comfort in a wide range of climates. The work was published in the journal Nature by a team of Foundry

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    Size Matters as Nanocrystals Go Through Phases Understanding what happens to a material as it undergoes phase transformations - changes from a solid to a liquid to a gas or a plasma - is of fundamental scientific interest and critical for optimizing commercial applications. For metal nanocrystals, assumptions about the size-dependence of phase transformations were made that now need to be re-evaluated. A team of researchers at the Molecular Foundry has demonstrated that as metal nanocrystals go

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    Welcome to the Molecular Foundry's New Outreach and Communications Specialist Branden Brough joined the Molecular Foundry this month as their new communications and outreach specialist. Before joining the Foundry, Brough (rhymes with rough) worked at the National Institutes of Health where he led Congressional and public outreach efforts within the science policy office of the National Institute of Arthritis and Musculosketal and Skin Diseases. Brough received his Ph.D. in Mechanical Engineering

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    In Water as In Love, Likes Can Attract At some point in elementary school you were shown that opposite charges attract and like charges repel. This is a universal scientific truth - except when it isn't. A research team led by Berkeley Lab chemist Richard Saykally and theorist David Prendergast, working at the Advanced Light Source (ALS), has shown that, when hydrated in water, positively charged ions (cations) can actually pair up with one another. "Through a combination of X-ray

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    2013 Annual User Meeting Postponed Due to significant impacts on our event planning and outreach activities stemming from the recent partial government shutdown, the Annual User Meeting (AUM) that was scheduled for November 4-5, 2013 has been postponed. This event is always a great opportunity to share the latest science and foster stronger connections with members of the Molecular Foundry and NCEM User communities. Plans are being made to reschedule the AUM for the first half of 2014. We

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    Alison Hatt to Direct User Program Alison Hatt has been chosen to head the Molecular Foundry's User Program. She is succeeding David Bunzow, who is retiring this month. As User Program Director, Alison will be responsible for overseeing the Foundry's scientific proposal process, including administration associated with User proposal submissions, peer reviews, and scheduling approved projects; working with scientific staff to reach out to and grow new diverse, engaged and productive User

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    Researchers Take Cues From Nature in Designing a Programmable Nanomaterial for Biosensing Taking inspiration from the human immune system, researchers at the Molecular Foundry have created a new material that can be programmed to identify an endless variety of molecules. The new material resembles tiny sheets of Velcro, each just one-hundred nanometers across. But instead of securing your sneakers, this molecular Velcro mimics the way natural antibodies recognize viruses and toxins, and could

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    and NCEM Staff Gather to Identify Scientific Synergies The Molecular Foundry and NCEM staff participated in a Scientific Retreat on November 4-5 - formerly the dates of our joint Annual User Meeting that was canceled due to the government shutdown - to discuss new scientific opportunities in nanoscience and electron scattering that are of interest to the two centers. The retreat focused on the ways that the scientific achievements of the Molecular Foundry and NCEM benefit from increasingly close

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    Holistic Cell Design by Berkeley Lab Scientists Leads to High-Performance, Long Cycle-Life Lithium-Sulfur Battery Researchers at Berkeley Lab, including the Molecular Foundry, have demonstrated in the laboratory a lithium-sulfur (Li/S) battery that has more than twice the specific energy of lithium-ion batteries, and that lasts for more than 1,500 cycles of charge-discharge with minimal decay of the battery's capacity. This is the longest cycle life reported so far for any lithium-sulfur

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    Three Foundry Scientists Receive 2014 Lab Directed Research and Development (LDRD) Awards Director Alivisatos has announced the awards for the FY2014 Laboratory Directed Research and Development (LDRD) program. A total of about $22.1 million was allocated for 77 projects, which primarily focus on fundamental science and translational research in energy science and technology applications, address the use of large-scale computation and data science, and aid in the development of a biological

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    Jeff Neaton Named American Physical Society (APS) Fellow Molecular Foundry Director and Theory Facility Senior Faculty Scientist, Jeff Neaton, was recently elected as an American Physical Society (APS) Fellow for his "fundamental contributions to the understanding of phase behavior, electronic structure, and transport properties of condensed matter, particularly multiferroics, nanostructures, and materials for energy conversion and storage." This honor signifies "exceptional

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    Good Vibrations: Researchers Tune the Chemical Bonds of Buckyballs If the chemical bonds that hold together the constituent atoms of a molecule could be tuned to become stronger or weaker, certain chemical properties of that molecule might be controlled to great advantage for applications in energy and catalysis. Berkeley Lab researchers at the Molecular Foundry, in collaboration with researchers from Rice University, were able to accomplish this feat by using an applied voltage and electric

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    In Memoriam: Gareth Thomas (1932-2014) Gareth Thomas, founder of Berkeley Lab's National Center for Electron Microscopy (NCEM) and one of the world's foremost experts on electron microscopy, passed away on February 7. He was 81. A native of Wales, Thomas earned his Ph.D. in metallurgy from Cambridge University, and joined the UC Berkeley (UCB) faculty in 1960. He became a UCB professor of metallurgy and a faculty scientist at Berkeley Lab, then known as Lawrence Berkeley Lab (LBL), in 1966. At a

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    Foundry/NCEM Combined Call for Proposals - Deadline March 31st In preparation for their merge that will be finalized by October 1, 2014, the Molecular Foundry and the National Center for Electron Microscopy (NCEM) have combined their user proposal submission and review processes for their next Call for Proposals. Proposals can be submitted here and will be accepted through March 31, 2014. The new coordinated proposal submission and review process is designed to combine the best aspects of the

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    Bright Future for Protein Nanoprobes Researchers at the Molecular Foundry have discovered surprising new rules for creating ultra-bright light-emitting crystals that are less than 10 nanometers in diameter. These ultra-tiny but ultra-bright nanoprobes should be a big asset for biological imaging, especially deep-tissue optical imaging of neurons in the brain. The multidisciplinary team of researchers led by James Schuck and Bruce Cohen used advanced single-particle characterization and

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    Newly Developed Tool Enables Remote Researchers to Take a Deeper Look at Interfaces An international team of researchers working at the Advanced Light Source (ALS) and remotely operating instruments at the National Center for Electron Microcopy (NCEM) via the Energy Sciences Network (ESnet) recently developed a new technique called Standing Wave Angle-Resolved Photoemission Spectroscopy, or SWARPES, to unlock the vast potential of metal oxide interfaces, especially those buried in subsurface

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    NCEM Leadership Change After more than 20 years as Director of the National Center for Electron Microscopy (NCEM), Ulrich Dahmen has stepped into a new role as NCEM Senior Advisor, effective March 15. As Senior Advisor, Dahmen will be focusing on multidisciplinary materials research and helping to set the agenda for electron microscopy research at the Molecular Foundry and NCEM, which are merging into a single User Facility later this year. Under Dahmen's leadership, NCEM has become DOE's

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    Discovery of New Semiconductor Holds Promise for 2D Physics and Electronics From super-lubricants, to solar cells, to the fledgling technology of valleytronics, there is much to be excited about with the discovery of a unique new two-dimensional semiconductor, rhenium disulfide, by a large international team of Molecular Foundry users. Rhenium disulfide (ReS2), unlike molybdenum disulfide and other dichalcogenides, behaves electronically as if it were a 2D monolayer even as a 3D bulk material.

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    4 Sen. Feinstein Visits Molecular Foundry folks During her time at LBNL, Senator Dianne Feinstein (D-CA) and her staff visited the Molecular Foundry where she met with Director Jeff Neaton and Inorganic Nanostructures Staff Scientist Delia Milliron to see firsthand the impact brought about by the unique capabilities found within the National Laboratory system. She also had time for a quick photo op with (left to right) User Program Director Alison Hatt, Project Scientist Sahar Sharifzadeh, and

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    Molecular Foundry Participates in NASA Earth Day Global Selfie

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    4 Foundry Volunteers Participate in Lab's Science Festival at Daughters and Sons to Work Day folks On April 24, LBNL hosted a Science Festival comprised of eight hands-on tabletop activity "stations" for 120 Lab employee sons and daughters aged 9-16. As part of this event, Molecular Foundry and Materials Sciences Division volunteers helped children build a 20 foot carbon nanotube balloon model.

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    Probing for Better Doping of Semiconductor Nanocrystals folks One method of altering the electrical properties of a semiconductor is by introducing impurities called dopants. A team led by Delia Milliron, a chemist in the Molecular Foundry's Inorganic Nanostructures Facility, has demonstrated that equally important as the amount of dopant is how the dopant is distributed on the surface and throughout the material. This opens the door for engineering the distribution of the dopant in order to

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    4 Weber-Bargioni Selected for Early Career Research Award folks Alex Weber-Bargioni, a staff scientist in the Molecular Foundry's Imaging and Manipulation Facility, was selected as one of 35 scientists from across the nation to receive significant funding for research as part of DOE's Early Career Research Program. The effort, now in its fifth year, is designed to bolster the nation's scientific workforce by providing support to exceptional researchers during the crucial early career years, when

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    folks

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    Organic Facility Director Frank Svec Retiring folks Frank Svec (left), Director of the Organic and Macromolecular Synthesis Facility since its inception, will be retiring on June 15. Svec's long and distinguished career has led to important discoveries and new understandings of nanoporous polymers, chromatography, and separations science. He has been recognized with several important awards and honors, many of them while at the Foundry. In addition to his valuable scientific contributions, he

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    Foundry and NCEM Scientists Join LBNL Contingent to Raise User Facility Awareness on Capitol Hill folks Foundry project scientist, Promita Chakraborty, and NCEM staff scientist, Peter Ercius, joined a contingent of staff and researchers from over 40 user facilities to help raise awareness on Capitol Hill through the 4th Annual National User Facility Organization (NUFO) Science Expo. Hosted by the U.S. House of Representatives' Science and National Labs Caucus, the Expo was held June 10 in the

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    Xiang Zhang Appointed Director of Materials Sciences Division folks Xiang Zhang has been appointed Director of the Lab's Materials Sciences Division, effective 1 July 2014. He has been a long-time Foundry user since the building opened in 2006. Xiang is the Ernest S. Kuh Endowed Chaired Professor at UC Berkeley and has served in the past ten years as the Director of NSF Nano-scale Science and Engineering Center (SINAM). Xiang received his Ph.D from UC Berkeley in 1996. He was an assistant

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    New Chemistry for High-Resolution Patterning at the Nanoscale folks Similar to film used in photography, photoresist is used to lay down the patterns of ever-shrinking lines and features on a surface. In a bid to continue decreasing transistor size while increasing computation and energy efficiency, chip-maker Intel has partnered with researchers from the Molecular Foundry - with contributions from ALS - to design an entirely new kind of resist. And importantly, they have done so by

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    Characterizing Hot Carriers Could Hold the Key to Future Solar Cell Efficiencies folks One of the major road blocks to the design and development of new, more efficient solar cells may have been cleared. Users of the Molecular Foundry have developed the first ab initio method - meaning a theoretical model free of adjustable or empirical parameters - for characterizing the properties of "hot carriers" in semiconductors. Hot carriers are electrical charge carriers - electrons and holes -

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    Industrial Users of the Foundry Produce Low-cost Printable Photonic Integrated Devices folks By directly printing devices onto a functional resist with a high refractive index, users from aBeam Technologies and NanoOptic Devices, in partnership with Foundry staff, created optical components without the use of any etching steps. The method combines the advantages of top-down (NIL) and bottom-up (sol-gel chemistry) approaches. After annealing at high temperatures, the photonic structures shrink

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    Shaping the Future of Nanocrystals The first direct observations of how facets form and develop on platinum nanocubes point the way towards more sophisticated and effective nanocrystal design and reveal that a nearly 150 year-old scientific law describing crystal growth breaks down at the nanoscale. Lawrence Berkeley National Laboratory researchers used several highly sophisticated transmission electron microscopes at NCEM through a user project, as well as an advanced high-resolution,

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    Oil/Water Interface From the people who brought us peptoid nanosheets that form at the interface between air and water, now come peptoid nanosheets that form at the interface between oil and water. Scientists at the Molecular Foundry have developed peptoid nanosheets - two-dimensional biomimetic materials with customizable properties - that self-assemble at an oil-water interface. This new development opens the door to designing these sheets with increasing structural complexity and chemical

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    Foundry/NCEM Users' Meeting Draws a Crowd Nearly 300 scientific users and prospective users of the Molecular Foundry and the National Center for Electron Microscopy (NCEM) came to Berkeley Lab from across the nation and around the world to attend the 2014 Annual Users' Meeting of these two facilities. The two-day event, which was held August 25-26, drew a number of prominent speakers including former Berkeley Lab director and Secretary of Energy Steve Chu, as well as Chris Murray from the

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    Fall Seminar Series Begins September 16 More information, including speaker abstracts can be found here

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    Foundry Helps Capture Birth of Mineral in Real Time Found in seashells, pearls, marble, and chalk, calcium carbonate is one of the most important molecules on Earth. It is also the most abundant form of carbon on our planet. But while scientists have studied calcium carbonate crystal growth for decades, they haven't actually been able to explain how the crystals appear from the very start. Now, a team of researchers have used a high-powered electron microscope at the Molecular Foundry to capture

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    Foundry Scientists Partner with Campus and UCSF in BRAINseed Through a one-of-a-kind collaboration between Berkeley Lab, UC Berkeley and UCSF, BRAINseed hopes to kickstart innovative but risky brain research. The partnership hopes to yield discoveries that accelerate President Barack Obama's national BRAIN (Brain Research through Advancing Innovative Neurotechnologies) Initiative and California's own Cal-BRAIN (California Blueprint for Research to Advance Innovations in Neuroscience) Initiative.

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    Molecular Foundry and NCEM Merge Complete As of October 1, 2014, the Molecular Foundry includes the National Center for Electron Microscopy (NCEM). Previously, NCEM was a separate user facility, but at the request of DOE and in response to evolving research needs, NCEM is now one of the seven facilities within the Molecular Foundry. This merger provides outstanding new characterization capabilities to the Foundry, enhancing its position as a leader in nanoscience research, and streamlines the

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    Study Reveals Molecular Structure of Water at Gold Electrodes At an electrode surface, the build-up of electrical charge, driven by a potential difference (or voltage), produces a strong electric field that drives molecular rearrangements in the electrolyte next to the electrode. Users and staff at the Molecular Foundry have developed a method to not only look at the molecules next to an electrode's surface, but to determine how their arrangement changes depending on the voltage. With gold as a

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    Nanotubes that Insert Themselves into Cell Membranes Researchers have helped show that short carbon nanotubes can make excellent artificial pores within cell membranes. Moreover, these nanotubes, which are far more rugged than their biological counterparts, can self-insert into a cell membrane or other lipid bilayers. Caroline Ajo-Franklin, a Foundry staff scientist, worked with Alex Noy, a biophysicist at Lawrence Livermore National Laboratory (LLNL) used lipids to get the nanotubes the right

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    Outsmarting Thermodynamics in Self-assembly of Nanostructures If you can uniformly break the symmetry of nanorod pairs in a colloidal solution, you're one step closer to achieving new and exciting metamaterial properties. The development of an innovative self-assembly route could surpass the conventional thermodynamic limit in chemical synthetic systems and lead to the production of nanostructures that have historically been considered impossible to assemble. But traditional thermodynamic-driven

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    Advanced Materials Cover

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    Enhanced CO2 Capture in Metal-Organic Frameworks CO2 binding in BTT-type metal-organic framework: the highly porous MOF structure and, inset, detail of the CO2 binding site illustrating the affinity with organic linker molecule. Led by the Molecular Foundry's Jeff Neaton, and in collaboration with Berend Smit in an Energy Frontier Research Center at UC-Berkeley, a team of researchers has identified a new mechanism by which CO2 binds to a nanoporous material with exceptional strength. Discovering

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    Making a Map for Nanotube Exploration Figures: Electron diffraction patterns and Rayleigh spectra of carbon nanotubes with different chiral indices. Inset, top, an illustration of a single nanotube suspended across a gapped substrate for measurement. An international team of scientists headed by Feng Wang of the Materials Science Division of Berkeley Lab and Enge Wang of the International Center for Quantum Materials in Beijing, has mapped out an "atlas" of key structural and optical

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    Combinatorial Nanoscience Shines in Pure Colors Green/red purity vs. total intensity, observed in the various lanthanide ion combinations. The Molecular Foundry's Delia Milliron and colleagues have employed a powerful combinatorial approach to synthesize nanocrystals that glow in bright, pure colors when excited with near infrared light. - a process known as upconversion. These nanocrystals may allow for biological imaging with less harmful radiation than current methods, and can be more easily

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    Enhancing Electron Photoemission with Nanopillar Array Figures: An array of nano-sized gold pillars, (a), creates a plasmonic surface resonance. (B), photoelectron kinetic energy spectrum for electrons ejected from the nanopillar array, showing significant increases compared to a flat gold surface. Working with the Molecular Foundry's Bruce Harteneck, researchers in the Lab's Ultrafast Materials and Chemical Sciences programs have verified and measured a boost in photoemitted-electron energies

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    2 Revealing nanorod formation with liquid-cell TEM Sequential TEM images show Pt3Fe nanorods forming by first making a kinked chain which then straightens out. On right, High-resolution STEM images reveal changes in crystal orientation as the chains relax. Materials Science Division researcher Haimei Zheng, the Molecular Foundry's Stephen Whitelam, and colleagues have imaged iron-platinum nanoparticle forming from solution, helping resolve a decades-long debate about growth dynamics. By

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    Defining Structure in Synthetic Proteins Predicted 3-dimensional structures, an N-aryl trimer and N-alkyl trimer (top) and a larger cyclic nonamer (bottom) later confirmed by X-ray crystallography results. Scientific Achievement Blind conformational predictions were performed for 3 new peptoids using Replica Exchange Molecular Dynamics simulation and Quantum Mechanical refinement. Subsequent comparison with the 3D structure determined by X-ray crystallography showed these predictions to be

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    S-layer Formation: Trapped in the Middle Top: Schematic of S-layer formation on a lipid bilayer Bottom: 3-dimensional interpretation of AFM data acquired during analysis. Scientific Achievement Using in-situ Atomic Force Microscopy to directly observe S-layer formation on mica chips, Foundry scientists show that a kinetic trap occurs during protein self-assembly. Some domains become trapped in high-energy states. Once in this state, the energy barrier for relaxation into low-energy domains

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    A Comprehensive Model for Molecular-Bond Formation and Rupture Force spectra of ten different kinds of molecular bonds show transition from near-equilibrium to a kinetic regime. Inset, data re-plotted on the natural axes that emerge from the model show that it provides a universal description of bond breaking across the two regimes. Developed a new model for interpreting molecular-bond force spectra and verified it with measurements of ten different molecular systems Resolves inconsistencies in

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    Engineering electron nanoconduits in living bacteria This schematic shows that balanced expression of the Mtr electron conduit from Shewanella oneidensis in Escherichia coli enables E. coli to pass electrons across the membrane to an anode. Scientific Achievement A few specialized bacteria contain electron transfer protein complexes - electron nanoconduits - that allow them to reduce or oxidize an electrode. By exploring factors that control the synthesis of these electron nanoconduits, the

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    Seeing in Color at the Nanoscale An indium-phosphide nanowire imaged with scanning-electron microscope (left), campanile probe (center) and confocal microscope (right). The campanile probe delivers both spatial data and photoluminescence with a resolution of approximately 40 nm. Scientific Achievement A newly designed microscopy probe uses plasmonic enhancement to capture broadband spectroscopic data with sub-wavelength resolution Significance So-called "campanile" probe enables

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    Bio-inspired Polymers

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    Microscopy

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    Tomography

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    Near Field Imaging Browse the Molecular Foundry channel on YouTube »

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    Theory of Self-Assembly Browse the Molecular Foundry channel on YouTube »

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    1. Learn about the Molecular Foundry and its user program Before submitting your proposal, orient yourself to the Foundry's resources and capabilities, and learn about the User Program. The Molecular Foundry accepts standard user proposals twice annually. Proposals are reviewed by an external board of subject-matter experts for scientific merit and feasibility. Successful proposals can be started at any time and last for a maximum of one year. Learn more about the review process and about other,

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    3. Prepare responses to proposal questions Prepare responses to the six proposal questions, keeping in mind the review criteria for each. The questions and criteria are given in the User Policy. Figures can be included when entering your responses in the proposal form.

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    4. Create and submit your proposal through the online proposal portal If you are a new user, create a user profile on the proposal submission portal. The portal also gives you access to your past and current proposals. Log in to the portal and complete the proposal form. You can save the proposal form before submitting and return to it later, if needed. Submit the proposal form. You will be asked to review your proposal for completeness before submitting. When ready, click the 'submit proposal

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    5. Complete secondary safety screening (except NCEM users) Once your project has been approved, one member of your user team must submit more detailed safety information in the Tier II EHS forms. These forms must be evaluated and approved before you can begin work at the Foundry. To complete the Tier II EHS forms, log in to the proposal portal and locate a link to the right of your proposal title. The instructions for completing the forms are also given in your approval email

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    7. Contact your assigned Foundry scientist Once your proposal is approved, a Foundry scientist will be assigned to your project; he or she will be your primary contact at the Foundry. Contact your assigned scientist, named in your acceptance email, to discuss the logistics of your project and your arrival date. If your safety training can be done remotely, your assigned scientist will initiate that process at this time

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    0. Meet with your assigned staff scientist Meet with your assigned staff scientist, who will help orient you to the building and will discuss your safety training and lab access.

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    1. Complete safety training (except NCEM users) Before performing any work in a laboratory, you must complete all safety training. Each person who will work at the Foundry must complete an online Job Hazard Analysis (JHA) form and complete the designated training before the start of their project. Your assigned staff scientist will initiate the JHA process with you. Safety training typically takes two to four days to complete.

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    3. Sign out with your assigned scientist When you have completed your on-site work, you must sign out with your assigned scientist. He or she will go over any samples or data that need to be saved or shipped, and verify that all work areas/equipment used are clean and functional

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    5. Submit a final project report Users are required to submit a Final Project Report within 30 days of completing their project. This report is necessary for any subsequent proposal submission by the same user. A detailed discussion of the project along with a list of the resulting publications or patents is required

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    can "see" how temperature changes from point to point inside the smallest electronic circuits. The technique, called plasmon energy expansion thermometry, or PEET, allows...

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    A diode is a fundamental building block of integrated circuits that acts as an electricity valve. A diode must be asymmetric so that electricity flowing in one direction ...

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    Since a diode acts as an electricity valve, its structure needs to be asymmetric so that electricity flowing in one direction experiences a different environment than electricity ...

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    Oil-Water Interface Peptoid nanosheets are among the largest and thinnest free-floating organic crystals ever made. The sheets are a few nanometers thick but up to 100 micrometers...

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    Hosted by Jim Schuck: With the current explosion of big data and cloud computing, data storage is of paramount importance. For nearly 60 years, hard disk drive technology has been ...

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    Big, Deep and Smart Data Analytics in Materials Imaging Workshop Held at ORNL In June, Oak Ridge National Laboratory in Tennessee hosted a meeting organized by the five DOE ...

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    is enough to be analyzed. When combined with high performance liquid chromatography (HPLC), multiple fractions were directly characterized, establishing a prototypical LC-SCD...

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    control of chain conformation; combinatorial discovery technologies; therapeutic, vaccine and diagnostic applications; sequence-defined polymers; protein mimetic materials;...

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    carbonate-the ubiquitous compound that is a major component of seashells, limestone, concrete, antacids and myriad other naturally and industrially produced substances-may...

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    for vehicles. Q: My mother-in-law likes to occasionally visit my son at the Fermi daycare. Will I still need to get her security clearance when she wants to visit him? A: No,...

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    switch composition from CdSe to PbSe, Cu2Se, and Ag2Se through cation exchange: The architecture of these porous films remained intact and the chemical transformations were...

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    Functionalized Nanosheets Designed For Molecular Recognition Architecture of a natural antibody (left) and an antibody-mimetic nanosheet (right) with a high density of loops on a...

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    Since natural sugars are difficult to manage, the development of proteoglycan mimics could significantly decrease the cost and complexity of tissue engineering and stem cell ...

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    short life, however, carbonic acid imparts a lasting impact on Earth's atmosphere and geology, as well as on the human body. However, because of its short lifespan, the detailed...

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    academia, and government-sponsored research, ranging from chemistry to materials to biomedical breakthroughs. The Molecular Foundry's Stefano Cabrini, in collaboration with...

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    1, 2014 Time: 11:00 am Speaker: Peidong Yang, UC Berkeley Title: Semiconductor Nanowires for Artificial Photosynthesis Location: 67-3111 Chemla Room Abstract: Nanowires, with their...

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    to or may even exceed the capabilities of natural photosynthesis," says Peidong Yang, a Molecular Foundry user who led this work. "The bacteriainorganic-semiconductor...

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    for Microbial-based Energy Interconversion. Helms, from the Organic and Macromolecular Synthesis Facility, was awarded an LDRD for his project on Responsive Nanoparticle...

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    for ongoing Al K-edge XAS studies of actinide-aluminum alloys (with Booth, LBNL, and Bauer, LANL). A. B. Altman, C. D. Pemmaraju, C. Camp, J. Arnold, S. G. Minasian, D....

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    and do not distort during development, leading to good resolution (measured by half-pitch resolution (HP)), but suffer from poor sensitivity. Chemically amplified resists...

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    Probing carrier dynamics below the surface of solar cells (A) Schematic of the 2P microscope. 2D hyperspectral maps of lifetime were created by moving the laser excitation ...

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    The burning of fossil fuels and the consequent rising levels of atmospheric CO-2 has led to a number of negative environmental consequences, including global warming and ocean ...

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    located in the heart of the Blue Ridge Mountains and features the world's second largest man-made star, lit up every night for your viewing pleasure. He was an undergraduate...

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    The event built on recent planning activities such as the creation of the strategic plan and looked forward towards activities such as the DOE Budget Review in...

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    of 2D Semiconductor To the growing list of two-dimensional semiconductors, such as graphene, boron nitride, and molybdenum disulfide, whose unique electronic properties make...

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    2D Islands in Graphene Hold Promise for Future Device Fabrication In what could prove to be a significant advance in the fabrication of graphene-based nanodevices, a team of...

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    composite that improves water vapor blocking by 3000 times. Significance and Impact Corrosion of solar cell electrical contacts by water is a leading cause of device failure....

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    controls the majority of chemical properties at the nanoscale including catalysis and corrosion. Research Details Scanning electron microscopy (SEM) is an excellent technique for...

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    point to point inside the smallest electronic circuits. Significance and Impact Modern microelectronic circuits contain billions of nanometer-scale transistors, each generating...

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    Ralph Greenspan, UCSD Professor of Neurobiology and Director of the Center for Brain Activity Mapping, gave the first of three keynote addresses, discussing the BRAIN initiative ...

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    X-Therma scientists led by Xiaoxi Wei are developing a radical new highway of non-toxic, hyper-effective antifreeze agents to fight unwanted ice formation in regenerative...

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    block of nanoscience, yet until now we have only known the average positions of atom within them. This will enable scientists to control nanocrystals which are used in...

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    Call for Proposals The Molecular Foundry user program gives researchers access to expertise and equipment for cutting-edge nanoscience in a collaborative, multidisciplinary environment. The program is open to scientists from academia, industry, and research institutes worldwide. Access is obtained through a brief, peer-reviewed proposal with no charge for users who intend to publish their results. There are two calls for standard proposals each year, with deadlines of March 31 and September 30.

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    4, 2016 Time: 11:00 am Speaker: Ondrej Krivanek, Nion Title: Atomic-Resolution and Vibrational Studies of Materials by Aberration-Corrected Scanning Transmission Electron Microscopy Location: 67-3111 Chemla Room Abstract: Aberration-corrected scanning transmission electron microscopes (AC-STEMs) are able to form electron probes as small as 0.5 Å in diameter, and they can image and spectroscopically analyze single atoms in-situ. NCEM and Nion have pioneered many of these advances. Nion's main

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    1, 2016 Time: 11:00 am Speaker: Donglin Jiang, Japan Advanced Institute of Science and Technology Title: Covalent Organic Frameworks: Opportunities and Challenges Location: 67-3111 Chemla Room Abstract: Two-dimensional covalent polymers and organic frameworks are a class of crystalline polymers that enable the incorporation of organic building blocks into periodically aligned primary and high-order structures. In recent years, we have explored the design principle, synthetic reactions,

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    7, 2016 Time: 11:00 am Speaker: Ozgur Sahin, Columbia University Title: Microbe-Powered Machines: Harnessing Water Confinement in Biological Nanostructures Location: 67-3111 Chemla Room Abstract: Plants and many other biological organisms have developed structures that are extraordinarily effective in harnessing spatial and temporal changes in relative humidity to actuate structural changes. It is surprising that structures and devices made by humans rarely, if ever, take advantage of this

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    4, 2016 Time: 11:00 am Speaker: Anne Milasincic Andrews, UCLA Title: Chemical Neurotransmission and Functional Nanomaterials Location: 67-3111 Chemla Room Abstract: Numerous small molecules including amino acids, amino acid derivatives, and peptides have been identified as chemical neurotransmitters. Neuronal cells using different neurotransmitters have spatially distinct patterns that translate into highly heterogeneous chemistries in brain extracellular microenvironments. Accordingly,

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    8, 2016 Time: 11:00 am Speaker: Mike Mills, The Ohio State University Title: Revealing the Mechanisms of Deformation in Structural Materials Using Advanced Characterization Techniques Location: 67-3111 Chemla Room Abstract: The international initiative on Integrated Computational Materials Engineering holds great promise for accelerating the insertion of new materials in high performance structural applications. Achieving this aim relies upon the fidelity of materials models and their ability to

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    List 3010 INSITU 80+ Reactive Ion Etcher (tool referred to as the RIE by nanofab staff) AAPPTec Apex 396 Peptide Synthesizer AB Sciex TF4800 MALDI-TOF-TOF - Ideal for small molecules and (bio)polymers between 500 and 150,000 Da molecular weights ABM optical contact printer Agilent (Molecular Imaging) PicoPlus Scanning Probe Microscope Agilent 1100 series (ion trap) LC-MS-MS Mass spectrometer Agilent 1100 Series Agilent 1200 nanoHPLC System Agilent 1260 Infinity Agilent analytical HPLC Agilent

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    Foundry Winter Seminar Series Begins February 3 More information, including speaker abstracts can be found here.

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    New Molecular Foundry Logo Released Following the merge of the Molecular Foundry and the National Center for Electron Microscopy (NCEM) at the start of FY 2015, a new logo has been created to represent the newly integrated center. The logo, as well as the design package that accompanies it, was developed professionally and guided by input from staff and users throughout the Foundry. Signifying a sense of place that integrates seven distinct scientific facilities, the new logo features a clean

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    A Better Way of Scrubbing CO2 A team of researchers at Berkeley Laboratory, including the Molecular Foundry, have discovered a more effective and lower cost means to one day remove carbon dioxide (CO2) from coal-fired power plants. By modifying a metal-organic-framework (MOF), the researchers were able to more than triple the CO2-scrubbing capacity of the MOF, while significantly reducing parasitic energy. Current carbon capture and storage technologies are based on aqueous amine scrubbers that

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    Research Could Lead to More Efficient Electrical Energy Storage Working with the Molecular Foundry's David Prendergast, as well as researchers at the Advanced Light Source, users from Lawrence Livermore National Laboratory have identified electrical charge-induced changes in the structure and bonding of graphitic carbon electrodes that may one day improve the way energy is stored in electrical energy storage systems, such as batteries and supercapacitors. The team developed a new X-ray

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    Foundry Spring/Summer Seminar Series Begins May 19

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    Most Singular Nano-Imaging Technique A multi-institutional team of researchers working at the Molecular Foundry has developed a new technique called "SINGLE" that provides the first atomic-scale images of colloidal nanoparticles. SINGLE, which stands for 3D Structure Identification of Nanoparticles by Graphene Liquid Cell Electron Microscopy, has been used to separately reconstruct the 3D structures of two individual platinum nanoparticles in solution. "Understanding structural

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    Foundry Research Selected as One of Berkeley Lab's 10 Science Solutions that are "On the Way" Berkeley Lab has updated its "On the Way" list, which showcases ten research projects or technologies that are either starting up, moving along, or getting ready to deliver. The list first rolled out last year, and is intended to highlight how today's science could lead to the solutions and discoveries of tomorrow. This year's edition of the list included the Foundry's Caroline

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    User Work Featured on Cover of Energy & Environmental Science

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    Foundry Fall Seminar Series Begins September 15 More information, including speaker abstracts can be found here.

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    Defects Through the Looking Glass Observing individual nanoscale defects in bulk insulators, a ubiquitous and essential component to almost all devices, has remained elusive: it's far easier to image the detailed electrical structure of conductors than insulators. Now, researchers at Berkeley Lab using the Molecular Foundry have demonstrated a new method that can be applied to study individual defects in a widely used bulk insulating material, hexagonal boron nitride (h-BN), by employing

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    Berkeley Lab Awarded $8 Million for Hydrogen and Fuel Cell Research With commitments from leading car and stationary-power manufacturers to hydrogen and fuel cell technologies and the first ever fuel cell electric vehicle to go on sale later this year, interest is once again swelling in this carbon-free technology. Now, thanks to several new projects from the U.S. Department of Energy's (DOE) Fuel Cell Technologies Office, scientists from Lawrence Berkeley National Laboratory (Berkeley Lab) will

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    Making Smart Windows Even Smarter Nanocrystals of indium tin oxide (shown here in blue) embedded in a glassy matrix of niobium oxide (green) form a composite material that can switch between NIR-transmitting and NIR-blocking states with a small jolt of electricity. A synergistic interaction in the region where glassy matrix meets nanocrystal increases the potency of the electrochromic effect. Scientific Achievement Researchers have created a thin coating of nanocrystals embedded in glass that

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    3 Self-assembled Single-layer 2D Frameworks In the presence of macrocycle rings, rigid triangular struts are jointed and self-assemble in solution to create a supramolecular organic framework (SOF). Each strut contains functional units that resist stacking and results in single-layer 2D structures. Scientific Achievement Foundry Users have created the first 2D supramolecular organic framework (SOF) with honeycomb periodicity using a novel solution-based self-assembly approach. Significance and

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    Nanocrystal Simulation Verified by the Discovery of Predicted Hydroxyl Ions Calculated atomic structure of a 5 nm diameter nanocrystal passivated with oleate and hydroxyl ligands. Inset: High-resolution TEM images of the synthesized PbS-NC with enlarged views of selected nanocrystals Scientific Achievement A research team that included Molecular Foundry staff recently reported an atomic level simulation of semiconducting nanocrystals that provide a new understanding of the precise atomic

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    Research Team Creates a High-efficiency Solar Cell in 7 Steps An international team of researchers working at the Molecular Foundry has simplified the steps to create highly ...

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    Light JV characteristic and schematic of the dopant-free asymmetric heterocontact (DASH) silicon solar cell showing a conversion efficiency of 19.4%, with a high Voc above 710 mV, ...

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    Using Robots To Assemble Promising Antimicrobial Compounds There's an urgent demand for new antimicrobial compounds that are effective against constantly emerging drug-resistant...

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    and charge-phonon interactions, and slow energy relaxation due to mismatch between electronic energy gaps and phonon frequencies. The bulk view advocates that the kinetic...

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    Monolayer Behavior Retained in Bulk Semiconducting Transition Metal Dichalcogenide Comparison of the structure of ReS2 with the conventional structure of sTMDs such as MoS2 from...

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    A team of multidisciplinary researchers at the Berkeley Lab's Molecular Foundry used ... Manipulating GaN nanostructures offers the ability to custom design bulk material ...

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    Understanding and Predicting Self-Assembly Scientific Achievement Molecular Foundry staff worked with users to discover a new design rule that controls the way in which polymers ...

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    details of inorganic-organic interface interaction, which can one day lead to the development of a library of molecular functions for biomimetic materials design and engineering.

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    The Molecular Foundry scientists say this never-before-seen design rule could be used to piece together complex nanosheet structures and other peptoid assemblies such as nanotubes ...

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    Modular Design of Ordered Polymer-Nanoparticle Composites (a) Schematic illustration of ... fraction as a function of polymer molecular weight. (c) Schematic and (d) TEM image ...

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    Scientific Achievement A collaborative team of Molecular Foundry Users and staff used computation to design and predict a new metal-organic framework (MOF) able to separate ...

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    ribbon orientation and sizes The strong anisotropy was attributed mainly to phonon dispersion with some contribution from phonon-phonon scattering rate, both of which are...

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    localization and small mode volumes, thereby boosting the sensitivity and signal-to-noise ratio in appli- cations ranging from single photon sources to photodetection. Optical...

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    the U.S. Supreme Court to rule by the end of June 2015 on same-sex marriage-it's perfect timing to just take a moment to be proud of the progress we've made and of who I am." ...

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    R. Tunuguntla, L. R. Comolli, F. I. Allen, A. V. Shnyrova, K. Rae Cho, D. Munoz, Y. M. Wang, C. P. Grigoropoulos, C. M. Ajo-Franklin, V. A. Frolov & A. Noy. Nature 2014 in...

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    shapes, robust DNARNA probes with near optimal binding specificity, and RNA- based translation regulators with unprecedented dynamic range and orthogonality. I'll then describe...

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    but also necessary support for rapid commercialization of nanotechnology. The translation of bench science into commercial reality requires the partnership of academic,...

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    Project, The Long Now Foundation; Molecular Foundry User Title: The Rosetta Disk and Strategies for Very Long-term Archiving Location: 67-3111 Chemla Room Abstract: The Rosetta...

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    , 2016 Time: 11:00 am Speaker: Sarah Burke, University of British Columbia Title: Electronic Landscapes of Molecular Nanostructures: Mapping States for Charge Transfer with Pixel-by-Pixel Scanning Tunnelling Spectroscopy Location: 67-3111 Chemla Room Bio: My research career has centred around the use of Scanning Probe Microscopy techniques to learn about materials from a nanoscale view. My early research opportunities as an undergraduate at Dalhousie University exposed me to UHV STM manipulation

  11. News Item

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    , 2016 Time: 11:00 am Speaker: Jean-Luc Bredas, KAUST Title: On the Nature of Polymer/Fullerene Intermolecular Interactions and their Impact on the Performance of Organic Solar Cells Location: 67-3111 Chemla Room Abstract: In this presentation, we seek to provide a rationalization of the impact that inter-molecular arrangements and interactions at the polymer/fullerene interfaces have on the performance of bulk-heterojunction solar cells. We discuss the results of combined electronic-structure

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    0, 2016 Time: 11:00 am Speaker: Frank van Veggel, University of Victoria Title: On the Optical and Magnetic Properties of Ln3+ Based Nanoparticles for Bio-Imaging Location: 67-3111 Chemla Room Abstract: One of our main research thrusts in the field of colloidal nanomaterials and their applications is based on the trivalent lanthanide ions, which have unique optical and magnetic properties. We cover the range from synthesis and characterisation to (in vivo) applications, with a recent focus on

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    7, 2016 Time: 11:00 am Speaker: Christopher Kemper Ober, Cornell University Title: Molecular Foundry/ALS Joint Seminar: Fifty Years of Moore's Law - Towards Fabrication at Molecular Dimensions Location: Building 66 Auditorium Abstract: In the last half century, critical dimensions in electronic devices have been reduced from micrometers to a few tens of nanometers on a pace that has been consistent for decades. Lithography now touches many areas of science ranging from electronics to biology and

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    Winter Seminar Series Begins January 19 More information, including speaker abstracts can be found here

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    Molecular Foundry and ALS Users, aBeam Technologies, Make Metrology History Through a collaboration with two Berkeley Lab user facilities - the Molecular Foundry and ALS - as well as two other national labs, a small Bay Area company has made big news in the semiconductor world. Modern electronics are getting smaller and smaller, which means the demands on semiconductor manufacturers are increasing. To ensure the quality and consistency of substrates, wafer manufacturers employ metrology tools to

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    Polar Vortices Observed in Ferroelectric The observation in a ferroelectric material of "polar vortices" that appear to be the electrical cousins of magnetic skyrmions holds intriguing possibilities for advanced electronic devices. These polar vortices, which were theoretically predicted more than a decade ago, could also "rewrite our basic understanding of ferroelectrics" according to the researchers who observed them. A team of Molecular Foundry users and staff have

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    Spectroscopy of Supercapacitor Electrodes In Operando Future technology will require energy storage systems that have much larger storage capability, rapid charge/discharge cycling, and improved endurance. Progress in these areas demands a more complete understanding of the processes involved in energy storage, from the atomic scale to the device level. Now, using soft x-ray absorption spectroscopy (XAS) under operating conditions ("in operando"), users of the Molecular Foundry, ALS

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    Foundry Users Developing Paint-on Coating for Energy Efficient Windows It's estimated that 10 percent of all the energy used in buildings in the U.S. can be attributed to window performance, costing building owners about $50 billion annually, yet the high cost of replacing windows or retrofitting them with an energy efficient coating is a major deterrent. Users at the Molecular Foundry are seeking to address this problem with creative chemistry-a polymer heat-reflective coating that can be

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    Form of Electron-beam Imaging Can See Elements that are 'Invisible' to Common Methods Electrons can extend our view of microscopic objects well beyond what's possible with visible light, all the way to the atomic scale. A popular method in electron microscopy for looking at tough, resilient materials in atomic detail is called STEM, or scanning transmission electron microscopy, but the highly focused beam of electrons used in STEM can also easily destroy delicate samples. To address this

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    Mr. Espresso Visits the Molecular Foundry It could be said that a lot of the research that is done at the Molecular Foundry is fueled by coffee, and for connoisseurs, you can't do much better on the hill than the second floor's coffee club run by Nanofabrication Facility Director Stefano Cabrini. On February 16, Carlo Di Ruocco, the Founder and CEO of the coffee maker company, Mr. Espresso, visited the Foundry's coffee club to discuss the art of brewing the perfect cup of espresso. During this

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    Experiment shows magnetic chips could dramatically increase computing's energy efficiency In a breakthrough for energy-efficient computing, engineers using the Molecular Foundry have shown for the first time that magnetic chips can operate with the lowest fundamental level of energy dissipation possible under the laws of thermodynamics. The findings mean that dramatic reductions in power consumption are possible-as much as one-millionth the amount of energy per operation used by transistors in

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    Fuel Cell Design Powered by Graphene-wrapped Nanocrystals Hydrogen is the lightest and most plentiful element on Earth and in our universe. So it shouldn't be a big surprise that scientists are pursuing hydrogen as a clean, carbon-free, virtually limitless energy source for cars and for a range of other uses, from portable generators to telecommunications towers-with water as the only byproduct of combustion. While there remain scientific challenges to making hydrogen-based energy sources more

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    Carbon Capture Membrane Boasts CO2 Highways A new, highly permeable carbon capture membrane developed by scientists at the Molecular Foundry could lead to more efficient ways of separating carbon dioxide from power plant exhaust, preventing the greenhouse gas from entering the atmosphere and contributing to climate change. The researchers focused on a hybrid membrane that is part polymer and part metal-organic framework, which is a porous three-dimensional crystal with a large internal surface

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    Nature-Inspired Nanotubes That Assemble Themselves, With Precision When it comes to the various nanowidgets scientists are developing, nanotubes are especially intriguing. That's because hollow tubes that have diameters of only a few billionths of a meter have the potential to be incredibly useful, from delivering cancer-fighting drugs inside cells to desalinating seawater. But building nanostructures is difficult. And creating a large quantity of nanostructures with the same trait, such as

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    Revealing the Fluctuations of Flexible DNA in 3D An international team of staff and users working at the Molecular Foundry has captured the first high-resolution 3D images from individual double-helix DNA segments attached at either end to gold nanoparticles. The images detail the flexible structure of the DNA segments, which appear as nanoscale jump ropes. This unique imaging capability developed at the Foundry is called individual-particle electron tomography (IPET) and could aid in the use of

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    6 Carbon Nanotubes Move into the Fast Lane Building off of their previous work demonstrating that short carbon nanotubes can make excellent artificial pores within cell membranes, Molecular Foundry users have now shown that carbon nanotubes can transport protons faster than bulk water, by an order of magnitude. What's more, the transport rates in these nanotube pores, which form one-dimensional water wires, also exceed those of biological channels and man-made proton conductors, making carbon

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    Seeing Atoms and Molecules in Action with an Electron 'Eye' A unique rapid-fire electron source-originally built as a prototype for driving next-generation X-ray lasers-will help scientists at Berkeley Lab study ultrafast chemical processes and changes in materials at the atomic scale. This could provide new insight in how to make materials with custom, controllable properties and improve the efficiency and output of chemical reactions. This newly launched setup, dubbed HiRES (for High

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    The Foundry's Jim Ciston Wins DOE Early Career Award Molecular Foundry staff scientist, Jim Ciston, was selected by DOE to receive the prestigious Early Career Research Program award, which supports the development of individual research programs of outstanding scientists early in their careers and stimulates research careers in the disciplines supported by the DOE Office of Science. In 2016, 49 awards were made from 720 proposals. "We invest in promising young researchers early in their

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    Foundry and ALS Hire Joint Project Scientist Mike Brady has recently been appointed to the role as a joint Molecular Foundry/ALS project scientist following the departure of Elaine Chan. Mike's mission will focus on (1) fostering user collaboration and displaying the novel Foundry-ALS working mode that uniquely enables iterative materials discovery research, and on (2) team-based, soft matter research that links molecular structure and function in biomimetic and biopolymer coatings,

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    Molecular Foundry Scientists Discover Surprising New Properties in a 2-D Semiconductor In the world of semiconductors, impurities and defects can be a good thing. They modify the properties of materials such as silicon, and scientists can exploit these properties to develop better transistors for laptops, smart phones, and solar cells. Recently, a new class of semiconductor was discovered that is only three atoms thick and which extends in a two-dimensional plane, similar to graphene. These 2-D

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    Highest Resolution Calibration Tool Created Scientific Achievement Industrial users at the Molecular Foundry have created the highest resolution calibration tool with feature sizes of 1.5 nanometers, a breakthrough that won an R&D100 Award. Significance and Impact Metrology tools are used to characterize advanced imaging systems from interferometers to electron microscopes. Research Details To ensure the quality and consistency of substrates, wafer manufacturers in the semiconductor industry

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    Molecular Self-Assembly in a Poorly Screened Environment: F4TCNQ on Graphene/BN (a) Chemical structure of F4TCNQ molecule. (b) STM and (c) nc-AFM images of a 2D F4TCNQ island on graphene/BN. Image resolves individual chemical bonds within the F4TCNQ molecules and shows that molecules within the island lie flat on the surface in a close-packed rectangular lattice. Scientific Achievement Using the Molecular Foundry, researchers show that charged molecules that would normally repel one another have

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    Lasing in Robust Cesium Lead Halide Perovskite Nanowires Power-dependent emission spectra from a CsPbBr3 nanowire. Narrow emission peaks at approximately 530 nm are indicative of lasing. Inset: A CsPbBr3 nanowire excited past the lasing threshold by a femtosecond pulsed laser. Scientific Achievement Molecular Foundry users achieve stable, high performance lasing in perovskite-based cesium lead halide nanowires (NWs). Significance and Impact These NW lasers demonstrate improved stability compared

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    Self-photosensitization of Nonphotosynthetic Bacteria for Solar-to-Chemical Production M. thermoacetica-CdS hybrids are formed by the one-pot growth and biological precipitation of CdS nanoparticles which serve as light absorbers for photosynthesis. Scientific Achievement Molecular Foundry users induced the nonphotosynthetic, CO2 reducing bacterium M. thermoacetica to precipitate cadmium sulfide nanoparticles which serve as light harvesters to enable photosynthetic production of acetic acid.

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    Direct growth of single crystalline III-V semiconductors on amorphous substrates SEM image of a single-crystalline Cal logo (top) along with a corresponding electron backscatter diffraction (EBSD) map showing the single crystal nature of the Cal logo (bottom) directly grown on amorphous SiO2 substrate. Scientific Achievement Molecular Foundry users worked with staff to develop a new growth method, templated liquid phase (TLP) crystal growth, for growing patterned single crystalline III-V's on

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    Imaging Technique Able to See Elements that are 'Invisible' to Common Methods Scientific Achievement Molecular Foundry scientists have developed a new imaging technique that greatly improves images of light elements using fewer electrons. Significance and Impact The MIDI-STEM method may prove to solve the challenge of seeing structures with a mixture of heavy and light elements in close proximity, thereby allowing high resolution electron microscopy to be used on a broader set of hybrid

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    Revealing the Fluctuations of Flexible DNA in 3D Scientific Achievement An international team of staff and users working at the Molecular Foundry has captured the first high-resolution 3D images from individual double-helix DNA segments attached at either end to gold nanoparticles Significance and Impact This unique imaging capability should lead to better understanding of disease-relevant proteins and the assembly process that forms DNA. It could also aid in the use of DNA segments as

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    Electron Microscopy Discovers Peptoid Crystalline Nanotubes (a) Cryogenic electron micrographs of crystalline peptoid nanotubes in water, revealing stripes spaced 2.4 nm apart. (b) Molecular model showing how the peptoid chains act as molecular tile units that form crystalline, brick-like lattices that roll into nanotubes, and expose both hydrophobic and hydrophilic groups to water. Scientific Achievement Electron micrographs of amphiphilic peptoids in water reveal crystalline nanotubes with

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    Carbon Capture Membrane Creates CO2 Highways Scientific Achievement Molecular Foundry scientists, working with the ALS, have developed a hybrid polymer-MOF membrane that is eight times more CO2 permeable than membranes composed only of the polymer. Significance and Impact This new, highly permeable carbon capture membrane could lead to more efficient ways of separating carbon dioxide from power plant exhaust, preventing the greenhouse gas from entering the atmosphere. Research Details The hybrid

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    Fuel Cell Design Powered by Graphene-wrapped Nanocrystals Scientific Achievement Researchers at the Molecular Foundry have partnered with the ALS to develop a new material recipe for a battery-like hydrogen fuel cell. Significance and Impact Hydrogen has the potential to be a clean, carbon-free, virtually limitless energy source. This hybrid technology allows for very compact and safe storage of hydrogen, while offering fast fueling times. Research Details Hydrogen is the lightest and most

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    functionality can be obtained at the second harmonic beam. Using this principle, we have created beam and polarization splitters operating at the second harmonic wavelength. ...

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    to reflect recent hires, acquisitions and programs. The plan is designed to provide a framework that guides Foundry-wide initiatives and priorities. The new plan builds off of...

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    the recently launched Theme Postdoc Program. Intended to better leverage the Foundry's multidisciplinary culture within its four research themes, this initiative supports a team...

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    within a self-assembling protective shell of S-layer proteins, like chainmail armor. A multidisciplinary team of Molecular Foundry researchers have uncovered key details in this...

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    the best previous compositions in single molecule conditions. Scientific Achievement A multidisciplinary team of Molecular Foundry scientists used advanced characterization and...

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    learned about the impact and potential of nanoscience while visiting the Foundry's cleanroom, several of the facility's combinatorial synthesis robots, and the TEAM 1 microscope...

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    including oceans, rivers and lakes, sunlight is well known to drive manganese oxide redox chemistry. It had long been assumed that electron-rich organic molecules were required to...

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    On October 27, Director Jeff Neaton and two Molecular Foundry users led a group to ... Chris Regan from UCLA spoke about his collaborations with the Foundry that have led to new ...

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    blend, with a molecular architecture composed of cube-like crystal structures, has also proven effective in an emerging wave of new designs for high-efficiency solar cells. Read

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    facility has experimentally confirmed strong in-plane anisotropy in thermal conductivity, up to a factor of two, along the zigzag and armchair directions of single-crystal...

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    molecules and enzymes that trigger or modulate cellular processes in inflammation and cancer. Using small molecules and engineered proteins, the Wells lab is studying how...

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    Size Doesn't Matter: Mechanical Deformation Remains in Small Crystals HR-TEM images and micrographs illustrate the morphological deformation observed in Sn nanocrystals after...

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    new materials with electrical, optical and magnetic properties needed for electronics and communication technology. At the Foundry, he has worked with staff and Users in the Theory...

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    Controlled Porous Membranes for Better Batteries Scientific Achievement Molecular Foundry staff and users have combined to develop membranes for lithium-sulfur batteries made from ...

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    Dispelling a Misconception About Mg-Ion Batteries Lithium (Li)-ion batteries serve us well, powering our laptops, tablets, cell phones and a host of other gadgets and devices. ...

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    and arrange for the necessary instrument qualification sessions. Instrument instruction will include a demonstration of specific instrument characteristics and will depend...

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    of relations between structure and physical properties. Each of these areas requires development of fundamental skills of experimental chemistry - synthesis and...

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    for the future design of hydrogen storage systems, catalysts, fuel cells, and batteries. Research Details Developed a unique optical probe based on luminescence that provided the...

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    SC15 Releases Video on Berkeley Lab's Electrolyte Genome Project A new breakthrough battery-one that has significantly higher energy, lasts longer, and is cheaper and safer-will...

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    Ecosystem Location: 67-3111 Chemla Room Abstract: Over the past 6 years as part of the DARPA SyNAPSE program, IBM's Brain Inspired Computing group has created an end-to-end ...

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    nanoparticles, new non-toxic MRI contrast agent was realized for high resolution MRI of blood vessels down to 0.2 mm.(2) We reported the first successful demonstration of...

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    of carbon dioxide between the atmosphere and the oceans - and in the buffering of blood and other bodily fluids. However, the short life span of carbonic acid in water has...

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    the interaction of nanoparticles with cells. We have investigated how proteins found in blood serum affect the cellular binding of protein-nanoparticle complexes. Using...

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    used in photovoltaics. Our far-field approach will enable the mapping of exciton migration with nanometer and picosecond precision in order to correlate it to the underlying...

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    6. Acknowledge Foundry support in published work All published work resulting from use of this facility must carry the following acknowledgment, regardless of whether Foundry staff...

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    Office of your publications, awards, or other research outcomes resulting from your Foundry project. This allows us to track the success of our program and is important to our...

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    Cooling Microprocessors with Carbon Nanotubes Researchers at the Molecular Foundry, through a User project with Intel, have developed a "process friendly" technique that would...

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    badge and sign out with the User Office Before going home, return your badge to the Foundry User Office and sign out. If you leave after hours, please leave your badge with your...

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    6. Become a badged LBNL "affiliate" All users who will be at the Foundry for more than five business days during the course of your Foundry project must become LBNL "affiliates"...

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    Time: 11:00 am Speaker: Paulo Ferreira, University of Texas at Austin Title: Molecular FoundryALS Joint Seminar: Seeing Small - Enabling New Discoveries in Nanomaterials Through...

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    9. Sign in with the Molecular Foundry User Office Visit the Foundry's user office on the third floor of Building 67 to sign in...

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    2. Explore Foundry capabilities and plan your proposal Start by determining which Facilities are required for your project. You can learn about our research Facilities on the...

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    4 Toyota's Battery Research Extends from ALS to the Molecular Foundry folks Toyota has been conducting research at the ALS since 2010 in an effort to gain insight into the...

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    UC President Janet Napolitano Visits Foundry Newly appointed UC President Janet Napolitano came to Lawrence Berkeley National Laboratory for a daylong visit on October 15 that...

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    Scheduling The Molecular Foundry's Instrument Scheduler allows approved users to schedule instrument time for given month beginning at 12:01 a.m. on the 15th day of the preceding...

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    your appointment with the Affiliate Office to collect your badge If you will be at the Foundry for more than five business days, you will have previously initiated the affiliate...

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    flexible, scaled, physical model of a polypeptide chain, which accurately reproduces the bond rotational degrees of freedom in the peptide backbone. Significance and Impact The...

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    Left, computationally optimized geometries of pyridine and amine-based molecules in gold junctions. Right, schematic of scanning electron microscope-based setup used to trap...

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    Carbon Nanotubes Organic molecules terminated by amine groups are bound to aluminum or gold surfaces. CNT arrays are treated to generate carboxylate polar groups that covalently...

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    4 Molecular Structure of Water at Gold Electrodes Revealed Schematic of the electrochemical cell - a silicon nitride (Si3N4) membrane separates the liquid from vacuum region of the...

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    Sciences, and she is a member of the departments of NanoEngineering, and Radiology. She came to UC San Diego from UC Berkeley, where she worked with Professor Jean...

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    could be harnessed into a renewable energy technology that would be a win for both the environment and the economy. That is the lure of artificial photosynthesis in which the...

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    Nanomaterials Location: 67-3111 Chemla Room Hosted by Jim Schuck Abstract: The safe and sustainable use engineered nanoparticles (NPs) will not be possible until between the...

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    9, 2015 Time: 11:00 am Speaker: Kirk Schanze, University of Florida Title: Triplet States in Organometallic Conjugated Materials Location: 67-3111 Chemla Room Abstract: Triplet...

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    by merging concepts from many-body perturbation theory and time-dependent density functional theory. We will discuss some of the theoretical approaches developed in the...

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    of nanostructures, design and fabricate novel electronic and photonic devices and other functional materials based on these nanostructures. Specifically, our research topics...

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    including scientists from the Molecular Foundry. "We've developed a reasonably direct method for determining the atomic structure of a surface that also addresses the very...

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    non-covalent bonds, is just beginning to come into its own with the emergence of nanotechnology. Metal-organic frameworks (MOFs) are commanding much of the attention because of...

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    Room Bio: Professor Liu's overall research objective focuses on the development of nanotechnology and potential applications to bioanalytical chemistry. One important aspect of the...

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    August 6, 2015 Time: 2:15 pm Speaker: Lloyd Whitman, Assistant Director for Nanotechnology, White House Office of Science and Technology Policy (OSTP) Title: Twenty Five Hundred...

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    and store. Ethanol is a potential alternative fuel that burns cleaner and has a higher energy density than other alternative fuels like methanol. Read the full Berkeley Lab news...

  12. Determining importance and grading of items and activities for the Yucca Mountain Project

    SciTech Connect (OSTI)

    DeKlever, R.; Verna, B.

    1993-12-31

    Raytheon Services Nevada (RSN), in support of the Department of Energy`s (DOE) Yucca Mountain Project, has been responsible for the Title 2 designs of the initial structures, systems, and components for the Exploratory Studies Facility (ESF), and the creation of the design output documents for the Surface-Based Testing (SBT) programs. The ESF and SBT programs are major scientific contributors to the overall site characterization program which will determine the suitability of Yucca Mountain to contain a proposed High Level Nuclear Waste (HLNW) repository. Accurate, traceable and objective characterization and testing documentation that is germane to the protection of public health and safety, and the environment, and that satisfies all the requirements of 10 CFR Part 60(1), must be established, evaluated and accepted. To assure that these requirements are satisfied, specific design functions and products, including items and activities depicted within respective design output documents, are subjected to the requirements of an NRC and DOE-approved Quality Assurance (QA) program. An evaluation (classification) is applied to these items and activities to determine their importance to radiological safety (ITS) and waste isolation (ITWI). Subsequently, QA program controls are selected (grading) for the items and activities. RSN has developed a DOE-approved classification process that is based on probabilistic risk assessment (PRA) techniques and that uses accident/impact scenarios. Results from respective performance assessment and test interference evaluations are also integrated into the classification analyses for various items. The methodology and results of the RSN classification and grading processes, presented herein, relative to ESF and SBT design products, demonstrates a solid, defensible methodological basis for classification and grading.

  13. Archived News Item: August 26, 2009 - Secretary Chu Announces Nearly $300

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

    Million in Clean Cities Grants to Support Clean Fuels, Vehicles, and Infrastructure Development | Department of Energy 26, 2009 - Secretary Chu Announces Nearly $300 Million in Clean Cities Grants to Support Clean Fuels, Vehicles, and Infrastructure Development Archived News Item: August 26, 2009 - Secretary Chu Announces Nearly $300 Million in Clean Cities Grants to Support Clean Fuels, Vehicles, and Infrastructure Development August 26, 2009 This page has been recreated from a retired EERE

  14. Archived News Item: January 11, 2010 - Secretary Chu Announces $187 Million

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

    to Improve Vehicle Efficiency for Heavy-Duty Trucks and Passenger Vehicles | Department of Energy January 11, 2010 - Secretary Chu Announces $187 Million to Improve Vehicle Efficiency for Heavy-Duty Trucks and Passenger Vehicles Archived News Item: January 11, 2010 - Secretary Chu Announces $187 Million to Improve Vehicle Efficiency for Heavy-Duty Trucks and Passenger Vehicles January 11, 2010 This page has been recreated from a retired EERE Network News archive for record-keeping purposes.

  15. Microsoft Word - Class 1 PMN_7_Items_9_30_15_Rev. 13

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    SEP 3 0 2015 Mr. John E. Kieling, Chief Hazardous Waste Bureau New Mexico Environment Department 2905 Rodeo Park Drive East, Building 1 Santa Fe, New Mexico 87505-6303 Subject: Class 1 Permit Modification Notifications to the Waste Isolation Pilot Plant Hazardous Waste Facility Permit Number: NM4890 139088-TSDF Dear Mr. Kieling: Enclosed is a Notification of Class 1 Permit Modifications for the following items: * Clarifications to Inspections of Liquid-Fueled Vehicles in Attachment E * Addition

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    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    FEB 1 7 2016 Mr. John E. Kieling, Bureau Chief Hazardous Waste Bureau New Mexico Environment Department 2905 Rodeo Park Drive East, Building 1 Santa Fe, New Mexico 87505-6303 Subject: Class 1 Permit Modification Notifications to the Waste Isolation Pilot Plant Hazardous Waste Facility Permit Number: NM4890139088-TSDF Dear Mr. Kieling: Enclosed is a Notification of Class 1 Permit Modifications for the following items: * Technical Training Organizational Change * Descriptive Changes Regarding

  17. Microsoft Word - FOI 2015-01299.Response letter for Item 1.doc

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    , 2015 CERTIFIED MAIL Mr. John Level Assistant Attorney General Washington State Attorney General's Office 2425 Bristol Court, SW Olympia, WA 98501 Dear Mr. Level: FREEDOM OF INFORMATION ACT REQUEST (FOI 2015-01299) This letter is in response to your electronic Freedom of Information Act (FOIA) request for documents regarding the Hanford Tank Vapor Assessment Report (TVAT). In a telephone conversation with me on May 18, 2015, you modified Item 1 of your request for a copy of the database that

  18. An Integrated RFID and Barcode Tagged Item Inventory System for Deployment at New Brunswick Laboratory

    SciTech Connect (OSTI)

    Younkin, James R; Kuhn, Michael J; Gradle, Colleen; Preston, Lynne; Thomas, Brigham B.; Laymance, Leesa K; Kuziel, Ron

    2012-01-01

    New Brunswick Laboratory (NBL) has a numerous inventory containing thousands of plutonium and uranium certified reference materials. The current manual inventory process is well established but is a lengthy process which requires significant oversight and double checking to ensure correctness. Oak Ridge National Laboratory has worked with NBL to develop and deploy a new inventory system which utilizes handheld computers with barcode scanners and radio frequency identification (RFID) readers termed the Tagged Item Inventory System (TIIS). Certified reference materials are identified by labels which incorporate RFID tags and barcodes. The label printing process and RFID tag association process are integrated into the main desktop software application. Software on the handheld computers syncs with software on designated desktop machines and the NBL inventory database to provide a seamless inventory process. This process includes: 1) identifying items to be inventoried, 2) downloading the current inventory information to the handheld computer, 3) using the handheld to read item and location labels, and 4) syncing the handheld computer with a designated desktop machine to analyze the results, print reports, etc. The security of this inventory software has been a major concern. Designated roles linked to authenticated logins are used to control access to the desktop software while password protection and badge verification are used to control access to the handheld computers. The overall system design and deployment at NBL will be presented. The performance of the system will also be discussed with respect to a small piece of the overall inventory. Future work includes performing a full inventory at NBL with the Tagged Item Inventory System and comparing performance, cost, and radiation exposures to the current manual inventory process.

  19. A database system for characterization of munitions items in conventional ammunition demilitarization stockpiles

    SciTech Connect (OSTI)

    Chun, K.C.; Chiu, S.Y.; Ditmars, J.D.; Huber, C.C.; Nortunen, L.; Sabb, R.

    1994-05-01

    The MIDAS (Munition Items Disposition Action System) database system is an electronic data management system capable of storage and retrieval of information on the detailed structures and material compositions of munitions items designated for demilitarization. The types of such munitions range from bulk propellants and small arms to projectiles and cluster bombs. The database system is also capable of processing data on the quantities of inert, PEP (propellant, explosives and pyrotechnics) and packaging materials associated with munitions, components, or parts, and the quantities of chemical compounds associated with parts made of PEP materials. Development of the MIDAS database system has been undertaken by the US Army to support disposition of unwanted ammunition stockpiles. The inventory of such stockpiles currently includes several thousand items, which total tens of thousands of tons, and is still growing. Providing systematic procedures for disposing of all unwanted conventional munitions is the mission of the MIDAS Demilitarization Program. To carry out this mission, all munitions listed in the Single Manager for Conventional Ammunition inventory must be characterized, and alternatives for resource recovery and recycling and/or disposal of munitions in the demilitarization inventory must be identified.

  20. Lattice dynamics of BaFe2X3(X=S,width='0.28em'/>Se) compounds

    SciTech Connect (OSTI)

    Popovi?, Z. V.; ?epanovi?, M.; Lazarevi?, N.; Opa?i?, M.; Radonji?, M. M.; Tanaskovi?, D.; Lei, Hechang; Petrovic, C.

    2015-02-27

    We present the Raman scattering spectra of the S=2 spin ladder compounds BaFe?X? (X=S,Se) in a temperature range between 20 and 400 K. Although the crystal structures of these two compounds are both orthorhombic and very similar, they are not isostructural. The unit cell of BaFe?S? (BaFe?Se?) is base-centered Cmcm (primitive Pnma), giving 18 (36) modes to be observed in the Raman scattering experiment. We have detected almost all Raman active modes, predicted by factor group analysis, which can be observed from the cleavage planes of these compounds. Assignment of the observed Raman modes of BaFe?S(Se)? is supported by the lattice dynamics calculations. The antiferromagnetic long-range spin ordering in BaFe?Se? below TN=255K leaves a fingerprint both in the A1g and B3g phonon mode linewidth and energy.