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Journals

Reduced Deadtime and Higher Rate Photon-Counting Detection Using a Multiplexed Detector Array

January 20, 2007

Author(s)

Stefania Castelletto, Ivo P. Degiovanni, V Schettini, Alan L. Migdall

We present a scheme for a photon-counting detection system that can be operated at incident photon rates higher than otherwise possible by suppressing the...

Phase Field Theory of Heterogeneous Crystal Nucleation

January 19, 2007

Author(s)

L Granasy, T Pusztai, D M. Saylor, James A. Warren

A phase field approach is developed to model wetting and heterogeneous crystal nucleation of an undercooled pure liquid in contact with a sharp wall. We discuss...

Origins of switching field distributions in perpendicular magnetic nanodot arrays

January 19, 2007

Author(s)

Justin Shaw, William Rippard, Stephen E. Russek, Tim Reith, Charles M. Falco

We studied the reversal properties of perpendicularly magnetized Co/Pd nanodots from 100 to 50 nm in diameter fabricated using electron beam lithography...

Detection of trace water vapor in high purity phosphine using cavity ring-down spectroscopy

January 18, 2007

Author(s)

H. H. Funke, Mark W. Raynor, Kristine A. Bertness, Yu-Hsuan Chen

The presence of trace water vapor in process gases such as phosphine, used for compound semiconductor epitaxial growth, can negatively affect the optical and...

Charge Offset Stability in Tunable-Barrier Si SET Devices

January 17, 2007

Author(s)

Neil M. Zimmerman, Brian Simonds, Mikio Fujiwara, Yukinori Ono, Yasuo Takahashi, Hiroshi Inokawa

The problem of charge offset drift in single-electron tunneling devices, based on the Coulomb blockade, can preclude their useful application in metrology and...

Synthesis and Structural Characterization of Glucopyranosylamide Films on Gold

January 16, 2007

Author(s)

Mridula Kadalbajoo, J J. Park, A Opdahl, Hiromi Suda, Kitchens A. C, Jayne C. Garno, J Batteas, Michael J. Tarlov, Phillip DeShong

Stereoselective synthesis of a- and b-linked glucopyranosylamide derivatives via the in situ generation of glucosyl isoxazolines has been performed utilizing a...

Analysis of C-S-H Gel and Cement Paste by Small-Angle Neutron Scattering

January 16, 2007

Author(s)

Andrew J. Allen, J Thomas

The role of small-angle x-ray and neutron scattering (SAXS and SANS) in the characterization of cement is briefly reviewed. The unique information obtainable...

Composition and Density of Amorphous Calcium-Silicate-Hydrate in Cement

January 16, 2007

Author(s)

Andrew J. Allen, J Thomas, Hamlin M. Jennings

Despite intensive research for over a century, the main binding reaction product of cement hydration, calcium-silicate-hydrate (C-S-H) gel, is not fully...

Measuring Molecular Order in Poly(3-alkylthiophene) Thin Films with Polarizing Spectroscopies

January 16, 2007

Author(s)

Marc Gurau, Dean DeLongchamp, Brandon M. Vogel, Eric K. Lin, Daniel A. Fischer, S Sambasivan, Lee J. Richter

We measured the molecular order of poly(3-alkylthiophene) chains in thin films before and after melting through the combination of several polarized photon...

A Measurement of Propagation Delay

January 16, 2007

Author(s)

Donald R. Larson, Nicholas Paulter

A measurement method and associated uncertainty analysis have been developed for the measurement of propagation or group delay in electrical transmission lines...

Study of the Packing Density and Molecular Orientation of Bimolecular Self-Assembled Monolayers of Aromatic and Aliphatic Organosilanes on Silica

January 16, 2007

Author(s)

M B. Smith, K Efimenko, Daniel A. Fischer, S E. Lappi, P K. Kilpatrick, Jan Genzer

Gradient Elution Moving Boundary Electrophoresis (GEMBE) for High-Throughput Multiplexed Microfluidic Devices

January 15, 2007

Author(s)

Jonathan G. Shackman, Matt S. Munson, David J. Ross

A novel method for performing electrophoretic separations is described - Gradient Elution Moving Boundary Electrophoresis (GEMBE). The technique utilizes the...

A Comprehensive Evaluation of Indoor ranging using Ultra-Wideband Technology

January 15, 2007

Author(s)

Camillo Gentile, El Kik

Ultra-wideband technology shows promise for precision ranging due to its fine time resolution to resolve multipath fading and the presence of lower frequencies...

Chemical Analysis of HfO22/ Si (100) Film Systems Exposed to NH3 Thermal Processing

January 15, 2007

Author(s)

Patrick S. Lysaght, Joseph Woicik, Daniel A. Fischer, G K. Bersuker, Joel Barnett, Brendan Foran, H . Tseng, Raj Jammy

Biaxial Stress Dependence of AlxGa_1-xAs Photoluminescence

January 13, 2007

Author(s)

Grady S. White, Albert J. Paul, Kristine A. Bertness, Lawrence H. Robins

A study was conducted of the room temperature photoluminescence behavior of AlxGa1-xAs as a function of tensile, equi-biaxial stress for x = 0, 0.198, 0.36, 0...

Crack Propagation Across an Adhesive Interlayer in Flexural Loading

January 12, 2007

Author(s)

James J. Lee, Herzl Chai, I Lloyd, Brian R. Lawn

Tax Incentives for Innovation: Time to Restructure the R&E Tax Credit

January 12, 2007

Author(s)

Gregory C. Tassey

The R&E tax credit was originally designed incorrectly, and subsequent attempts to restructure it have not addressed the major deficiencies. Moreover, in the 25...

Accuracy of Unconditionally Stable Algorithms in Cahn-Hilliard Systems

January 11, 2007

Author(s)

Mowei Cheng, James A. Warren

Given an unconditionally stable algorithm for solving the Cahn-Hilliard equations, we provide the mathematical basis for arbitrary accuracy -- we present a...

Influence of Base Additives on the Reaction Diffusion Front of Model Chemically Amplified Photoresists

January 11, 2007

Author(s)

B D. Vogt, Shuhui Kang, Vivek Prabhu, Ashwin Rao, Eric K. Lin, Sushil K. Satija, Karen Turnquest, Wen-Li Wu

The effects of amine base quencher on the photoacid catalyzed deprotection reaction-diffusion front in model photoresists was measured by combination of neutron...

The Importance of Focused Evaluations: A Case Study of TREC and DUC

January 10, 2007

Author(s)

Donna K. Harman

Evaluation has always been an important part of scientific research, and in information retrieval, this evaluation has mostly been done using test collections...

Topography of Metallic Surfaces Subjected to Plastic Strain: Roughness Correlations and Eigenvalue Spectra

January 10, 2007

Author(s)

Joseph B. Hubbard, Mark R. Stoudt, Lyle E. Levine

We employ scanning confocal laser microscopy (SLCM) to obtain topographic images of the surface of an aluminum alloy subjected to various levels of uniaxial...

Reanalysis of the Microwave Absorption Spectrum of Dimethyl Methylphosphonate and Its Internal Rotation Problem

January 10, 2007

Author(s)

Nobukimi Ohashia, Jon T. Hougen

The Fourier transform microwave spectrum of dimethyl methylphosphonate studied by us previously is reanalyzed here to obtain more physically reasonable...

Long distance decoy state quantum key distribution in optical fiber

January 5, 2007

Author(s)

Danna Rosenberg, Jim A. Harrington, Patrick R. Rice, Philip A. Hiskett, Charles G. Peterson, Richard J. Hughes, Jane E. Nordholt, Adriana Lita, Sae Woo Nam

The theoretical existence of photon-number-splitting attacks creates a security loophole for most quantum key distribution (QKD) demonstrations that use a...

Frequency Dependence of the Nonlinear Response in YBA2Cu307-x Transmission Lines

January 5, 2007

Author(s)

Jordi Mateu, James Booth, Brian Moeckly

We evaluate the frequency dependence of the nonlinear response in High Temperature Superconductor YBa2Cu3O7-x thin films by simultaneously measuring the...

On the Vickers Indentation Fracture Toughness Test

January 4, 2007

Author(s)

George D. Quinn, Richard Bradt

The Vickers indentation fracture toughness test or VIF is addressed by considering its origins and the numerous equations that have been applied along with the...

Improvements in the Measurement of Distillation Curves. Part 4. Application to the Aviation Turbine Fuel JP-A

January 3, 2007

Author(s)

Thomas J. Bruno, Beverly L. Smith

We have recently introduced several important improvements in the measurement of distillation curves distillation curves for complex fluids. The modifications...

Computable Error Bounds for Approximate Periodic Solutions of Autonomous Delay Differential Equations

January 2, 2007

Author(s)

David E. Gilsinn

In this paper we prove a result that says: Given an approximate solution and frequency to a periodic solution of an autonomous delay differential equation that...

Elastic constants and internal friction of martensitic steel, ferritic-pearlitic steel, and α-iron

January 2, 2007

Author(s)

Sudook A. Kim, Ward L. Johnson

The elastic constants and internal friction of induction hardened and unhardened SAE 1050 plain-carbon steel were determined by acoustic resonance spectroscopy...

Review of Understanding and Implementing the Finite Element Method

January 1, 2007

Author(s)

William F. Mitchell

This paper reviews the book "Understanding and Implementing the Finite Element Method" by Mark S. Gockenbach.

Temperature gradient focusing for microchannel separations

January 1, 2007

Author(s)

Jonathan G. Shackman, Matt S. Munson, David J. Ross

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