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Displaying 31376 - 31400 of 73829

Probing molecules in integrated solid-state silicon junctions

January 12, 2008
Author(s)
Wenyong Wang, Adina Scott, Nadine Gergel-Hackett, Christina Hacker, David Janes, Curt A. Richter
In this research work, we fabricate integrated Si-SAMs-metal devices using the ?soft? top metal deposition technique and probe their electronic properties with IETS characterizations. IETS confirmed the existence of molecular species in the device area.

Reinvestigation of the Microwave Spectrum of 2-Methylmalonaldehyde

January 11, 2008
Author(s)
Vadim V. Ilyushin, E A. Alekseev, Y C. Chou, Y-C Hsu, Jon T. Hougen, Francis J. Lovas, L B. Picaux
The molecule 2-methylmalonaldehyde (2-MMA) exists in the gas phase as a six-membered hydrogen-bonded ring [HO-CH=C(CH3)-CH=O] and exhibits two large-amplitude motions, an intramolecular hydrogen transfer and a methyl torsion. The former motion is

Sigma Stellation: A Design Strategy for Electron Boxes

January 10, 2008
Author(s)
Karl K. Irikura
The carbon-fluorine antibonding (sigma*) orbitals in a fluorocarbon cage are directed toward a central, common point. If the cage is not too large or too small, the sigma* orbitals will overlap at that point. An added electron can occupy the resulting

Model for Reversible Nanoparticle Assembly in a Polymer Matrix

January 8, 2008
Author(s)
Andrew Rahedi, Jack F. Douglas, Francis W. Starr
The clustering of nanoparticles (NP) within solutions and polymer melts depends sensitively on the strength and directionality of the NP interactions involved, as well as the molecular geometry and interactions of the dispersing fluids. Since clustering

NIST Time and Frequency Bulletin

January 8, 2008
Author(s)
Eyvon Petty
The Time and Frequency Bulletin provides information on performance of time scales and a variety of broadcasts (and related information) to users of the NIST services.

A Device for Mechanically Folding Yarns and Woven Fabrics of Ballistic Fibers

January 7, 2008
Author(s)
Walter G. McDonough, Jae Hyun Kim, Nolan J. Brandenburg, William R. Blair, Gale A. Holmes
Abstract (2000 characters maximum - spell out acronyms the first time)An apparatus was designed and built that attaches to servo-hydraulic machines that typically perform material fatigue testing. The device was designed to systematically fold woven fabric

Building a Test Suite for Web Application Scanners

January 7, 2008
Author(s)
Elizabeth N. Fong, Romain Gaucher, Vadim Okun, Paul E. Black, Eric Dalci
This paper describes the design of a test suite for thorough evaluation of web application scanners. Web application scanners are automated, black-box testing tools that examine web applications for security vulnerabilities. For several common

Reference Values for Dynamic Calibration of PMUs

January 7, 2008
Author(s)
Gerard N. Stenbakken, Thomas L. Nelson, Ming Zhou, Virgilio A. Centeno
This paper discusses measurements of the dynamic performance of electric power Phasor Measurement Units, PMUs, and their relation to the requirements of the IEEE Synchrophasor Standard C37.118-2005. In particular, it proposes a new method for monitoring

Towards the Complete Analysis of the Rotational Spectrum of (CH 3 ) 3 SnCl

January 7, 2008
Author(s)
Melanie Schnell, Jon T. Hougen, J U. Grabow
The rotational spectrum of the symmetric top trimethyl tin chloride (CH3)3SnCl has been studied using a pulsed molecular beam Fourier transform microwave spectrometer in the frequency range from 3 to 24 GHz. The spectrum is exceedingly complicated by the

Trap-Imbalanced Fermion Mixtures

January 7, 2008
Author(s)
Menderes Iskin, Carl J. Williams
We analyze the ground state phases of two-component population- andmass-balanced but trap-imbalanced fermion mixtures as a function of interactionstrength from the weak attraction Bardeen-Cooper-Schrieffer (BCS) to the strongattraction Bose-Einstein

X-Ray Topography to Characterize Surface Damage on CdZnTe Crystals

January 7, 2008
Author(s)
David R. Black, Joseph C. Woicik, Martine Duff, Douglas Hunter, Arnold Burger, Michael Groza
Synthetic CdZnTe or CZT crystals can be used for room temperature detection of ?-radiation. Structural/morphological heterogeneities within CZT, such as twinning, secondary phases (often referred to as inclusions or precipitates), and polycrystallinity can

Mitochondrial Genome Deletion Aids in the Identification of Both False and True Negative Prostate Needle Core Biopsies

January 6, 2008
Author(s)
Jennifer Maki, Kerry Robinson, Brian Reguly, Jude Alexander, Roy Wittock, A A. Aguirre, Eleftherios Diamandis, Nicholas Escott, Anthony Skehan, Owen Prowse, Robert E. Thayer, Kent Froberg, Michael Wilson, Samantha D. Maragh, J P. Jakupciak, Paul D. Wagner, S Srivastava, Gabriel D. Dakubo, Ryan L. Parr
We report the utility of a 3.4kb mtgenome deletion (3.4mt?) for molecular definition of benign, malignant and proximal to malignant (PTM) needle biopsies. The 3.4mt_ was identified through long extension PCR analysis of frozen PCa samples. A quantitative

High-performance carbon nanotube coatings for high-power laser radiometry

January 3, 2008
Author(s)
Krishna Ramadurai, Christopher L. Cromer, Laurence A. Lewis, Katie Hurst, Anne Dillon, Roop Mahajan, John H. Lehman
Radiometry for the next generation of high-efficiency, high-power industrial lasers requires thermal management at optical power levels exceeding 10 kW. Laser damage and thermal transport present fundamental challenges for laser radiometry in support of

Announcement: Greetings from the New Co-Editors

January 2, 2008
Author(s)
Allan H. Harvey, Donald R. Burgess Jr.
This is an editorial from the two incoming editors of the Journal of Physical and Chemical Reference Data, describing their future plans.

Coherent, multiheterodyne spectroscopy using stabilized optical frequency combs

January 2, 2008
Author(s)
Ian R. Coddington, William C. Swann, Nathan R. Newbury
The broadband, coherent nature of narrow-linewidth fiber frequency combs is exploited to measure the full complex spectrum of a molecular gas through multiheterodyne spectroscopy. We measure the absorption and phase shift experienced by each of 155 000

Optical Critical Dimension Measurement of Silicon Grating Targets Using Back Focal Plane Scatterfield Microscopy

January 2, 2008
Author(s)
Heather J. Patrick, Ravikiran Attota, Bryan M. Barnes, Thomas A. Germer, Michael T. Stocker, Richard M. Silver, Michael R. Bishop
We demonstrate optical critical dimension measurement of lines in silicon grating targets using back focal plane scatterfield microscopy. In this technique, angle-resolved diffraction signatures are obtained from grating targets by imaging the back focal
Displaying 31376 - 31400 of 73829
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