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.
Katherine Gettings, Rachel A. Aponte, Peter Vallone, John M. Butler
This article reviews what is currently known about short tandem repeat (STR) allelic sequence variation in and around the twenty-four loci most commonly used...
The removal of acetylene from ethylene/acetylene mixtures containing 1% acetylene is a technologically very important but highly challenging task. Current...
Virgil Provenzano, Robert D. Shull, G Kletetschka, Paul E. Stutzman
Because of its attractive magnetocaloric properties, gadolinium (Gd) metal is currently the refrigerant of choice in the development of near-room temperature...
We derive new formulas for the fundamental solutions of slow, viscous flow, governed by the Stokes equations, in a half-space. They are simpler than the...
Mark McLean, William A. Osborn, Oliver Boomhower, Christopher Keimel, Rebecca Kirkpatrick, Frank W. DelRio
Micromechanical testing of electroplated gold alloy films has been conducted using the theta specimen geometry. Specimens were formed by a standard combination...
Paul M. Haney, Heayoung Yoon, Prakash Koirala, Robert W. Collins, Nikolai B. Zhitenev
Electron beam induced current (EBIC) is a powerful technique which measures the charge collection efficiency of photovoltaics with sub-micron spatial resolution...
Solomon I. Woods, James E. Proctor, Alan W. Smith, Timothy M. Jung
We have developed a cryogenic amplifier for the measurement of small current signals from cryogenic optical detectors. Typically operated with gain near 10^7...
Guannan Liu, Baomei Wen, Ting Xie, Audie M. Castillo, Ratan K. Debnath, Albert Davydov
This paper describes a method for mass production of CMOS compatible gallium nitride (GaN) nanowire (NW) arrays for sensors and other application. The method...
Talapady N. Bhat, Ursula R. Kattner, Laura Bartolo, Carelyn E. Campbell, John T. Elliott
Intuitive, flexible, and evolving terminology plays a significant role in capitalizing on recommended knowledge representation models for material engineering...
One of the key concepts of a modernized smart grid is to combine modern communication technology with an improved electric grid to enable energy consumers to...
Piezoelectric actuation of atomic force microscope (AFM) cantilevers often suffers from spurious mechanical resonances in the loop between the signal driving...
David W. Allen, Paul Lemaillet, Jean-Pierre Bouchard
The development of a national reference instrument dedicated to the measurement of the scattering and absorption properties of solid tissue-mimicking phantoms...
John S. Villarrubia, Andras Vladar, Bin Ming, Regis J. Kline, Daniel F. Sunday, Jasmeet Chawla, Scott List
The width and shape of 10 nm to 12 nm wide lithographically patterned SiO2 lines were measured in the scanning electron microscope by fitting the measured...
In recent years silicon photonics has emerged as a powerful enabling technology that is being harnessed to devleop novel, highly sensitive sensing solutions to...
Examined here is the feasibility of employing Raman spectroscopy as a detection method in size- exclusion chromatography (SEC) and related macromolecular...
Robert G. Brinson, Jennifer T. Miller, Kahn Jason, Stuart F. Le Grice, John P. Marino
Proton assignment of NMR spectra of oligonucleotide duplexes can become difficult with increasing helical length due to cross peak overlap. Here we describe an...
Winnie K. Wong-Ng, Guangyao Liu, Yonggao Yan, Kevin R. Talley, James A. Kaduk
X-ray structural characterization and X-ray reference powder patterns have been determined for two series of iron- and cobalt-containing layered compounds...
Craig I. Schlenoff, Stephen B. Balakirsky, Edson Prestes
State-of-the-art robots are capable of sub-millimeter movement accuracy. However, they are often programmed by an operator using crude positional controls from...
We show that the strength of Internet-based network interconnectivity of countries is increasing over time. We then evaluate bounds on the extent to which a...
Human identification by fingerprints is based on the fundamental premise that ridge patterns from distinct fingers are different (uniqueness) and a fingerprint...
Yoshihiro Ohno, Aurelien David, Kevin Houser, Minchen Wei, Michael Royer, Kevin Smet, Lorne Whitehead
We have developed a two-measure system for evaluating light sources color rendition that builds upon conceptual progress of numerous researchers over the last...
Mixtures of small gaseous hydrocarbons with longer chain hydrocarbons are of interest to the natural gas industry. In particular, binary mixtures of nonane are...
Yuri Mishin, Geoffrey B. McFadden, Robert F. Sekerka, William J. Boettinger
We present a rigorous irreversible thermodynamics treatment of creep deformation of solid mate- rials with interfaces described as geometric surfaces capable of...
Quantum entanglement is the fundamental resource for quantum information processing and communications, including secure data rates with higher capacities and...
Winnie K. Wong-Ng, William J. Laws, Saul H. Lapidus, James A. Kaduk
The CaO-¿Sm2O3-CoOz system prepared at 885 °C in air consists of two calcium cobaltate compounds, namely, the 2D thermoelectric oxide solid solution, (Ca3-xSmx...
John E. Kitching, Chris Montoya, Jose Valencia, Andrew A. Geraci, Matt Eardley, John M. Moreland
Magnetic resonance in an ensemble of laser-cooled trapped Rb atoms is excited using a micro cantilever with a magnetic tip. The cantilever is mounted on a multi...