An official website of the United States government
Here’s how you know
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
Experimental characterizations of a quantum system involve the measurement of expectation values of observables for a preparable state |f> of the quantum system
Makoto Otani, Nathan Lowhorn, Peter K. Schenck, Winnie K. Wong-Ng, Martin L. Green, K Itaka, H Koinuma
We have developed a high throughput screening tool that maps out thermoelectric power factors of combinatorial composition-spread film libraries. The screening
A method is presented that allows direct measurement of a wide range of spring constants of cantilevers using an indentation instrument with an integrated
First-principles calculations were used to study the effects of neutral and 2+ charged oxygen vacancies on the dielectric properties of crystalline HfO2. In
Peter K. Schenck, Nabil Bassim, Makoto Otani, Hiroyuki Oguchi, Martin L. Green
The goal of the design of pulsed laser deposition (PLD) combinatorial library films is to optimize the compositional coverage of the films while maintaining a
Densities, vapor pressures, and the critical point were measured for dimethyl ether, thus filling several gaps in the thermodynamic data for this compound
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
In October 2005, a 2-day follow up workshop, Single photon: sources, detectors, applications and measurement methods, was held at the NPL (National Physical
Michael Ware, Alan L. Migdall, Joshua Bienfang, Sergey Polyakov
When photon-counting detectors are calibrated in the presence of a background signal, deadtime effects can be significant and must be carefully accounted for to
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
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
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
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
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
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
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
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 method and associated uncertainty analysis have been developed for the measurement of propagation or group delay in electrical transmission lines
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
Ultra-wideband technology shows promise for precision ranging due to its fine time resolution to resolve multipath fading and the presence of lower frequencies
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
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
Given an unconditionally stable algorithm for solving the Cahn-Hilliard equations, we provide the mathematical basis for arbitrary accuracy -- we present a
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
Evaluation has always been an important part of scientific research, and in information retrieval, this evaluation has mostly been done using test collections
We employ scanning confocal laser microscopy (SLCM) to obtain topographic images of the surface of an aluminum alloy subjected to various levels of uniaxial