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.
NIST has upgraded its measurement capability of noise parameters on low-noise amplifiers with a variable termination unit in the 1 to 12.4 GHz range. Such a
Seiji Mukai, Kuniaki Amemiya, Michiyuki Endo, Igor Vayshenker, Xiaoyu X. Li, Shao Yang
Optical fiber power meter (OFPM) linearity standards of NMIJ (Japan) and NIST (USA) are compared using a commercial OFPM as a transfer standard at 1310 nm and
We investigate the importance of broadband substrate permittivity and loss tangent measurement for accurate calculations of the characteristic impedance and
Catherine A. Remley, Nuno Carvalho, Pedro Cruz, Kevin Gard
This paper presents a new type of analog-digital mixed-domain instrument that is specially tailored for software defined radio characterization. The instrument
Andreas Jahn, Joseph E. Reiner, Wyatt N. Vreeland, Don DeVoe, Laurie E. Locascio, Michael Gaitan
A new method to tailor the size and size distribution of nanometer scale liposomes and control loading of liposomes with a model drug in a continuous-flow
Deployment of Smart Cards for Identity Verification requires collection of credentials and provisioning of credentials from and to heterogeneous and sometimes
Factors that contribute to the resonance temperature dependence of low-expansion optical cavities are discussed, including deformation at the cavity ends due to
We present a microfabricated atomic force microscope (AFM) cantilever and associated calibration procedure that provide a path for quantitative friction
Catherine A. Remley, Galen H. Koepke, Christopher L. Holloway, Chriss A. Grosvenor, Dennis G. Camell
We present measurement data to support technology and standards development for broadband, digitally modulated radio communications used by emergency responders
This paper discusses implications of possible metastability of TCP-type fair bandwidth sharing under random flow arrivals/departures for understanding and
Molecular force spectroscopy is the practice of testing the mechanical properties of single molecules. The precision determination of these properties requires
Gregory W. Vogl, Jason J. Gorman, Gordon A. Shaw, Jon R. Pratt
A new self-excited micro-oscillator is proposed as a velocity standard for dissemination of nanoNewton-level forces that are traceable to the International
Magneto-resistive imaging of cassette tapes for forensic analysis applications is presented. Sample tapes were recorded on various tape recorders with events
David W. Berning, Tam H. Duong, Jose M. Ortiz, Angel Rivera, Allen R. Hefner Jr.
A high-current, high-voltage-isolated gate drive circuit developed for characterization of high-voltage, high-frequency 10 kV, 100 A SiC MOSFET/JBS half-bridge
A new set of values of the basic fundamental constants has been recommended by the Committee on Data for Science and Technology (CODATA) (http://physics.nist
Dean G. Jarrett, Randolph Elmquist, Nien F. Zhang, Alejandra Tonina, Janice Fernandes, Daniel Izquierdo, Dave Inglis, Felipe Hernandez-Marquez
A regional comparison of DC resistance standards at the nominal values of 1 Ohm, 1 MOhm, and 1 GOhm has recently been completed in the System Interamericano de
Randolph Elmquist, George R. Jones Jr., Brian J. Pritchard, Marcos E. Bierzychudek, Felipe L. Hernandez
We describe a cryogenic current comparator (CCC) bridge for resistance scaling that provides improved measurement uncertainty over a range of resistance values
In this paper we present the uncertainty evaluation of a new cryogenic current comparator (CCC) bridge designed to compare two-terminal 1M Ω} and 10M Ω}
A two-way Josephson voltage standard (JVS) direct comparison between the National Institute of Standards and Technology (NIST) and the National Research Council
Precision standard resistors manufactured within the last two decades using improved construction techniques and materials, such as the resistance alloy Evanohm
Dean G. Jarrett, Angelica M. Muniz-Mercado, Marlin E. Kraft
The automation of ultra-high resistance measurements at the National Institute of Standards and Technology (NIST) in the range 1 TOhm to 100 TOhm has been
Evaluation of Machine Translation (MT) technology is often tied to the requirement for tedious manual judgments of translation quality. While automated MT
Peter O. Denno, Thomas Thurman, John Mettenburg, Dwayne Hardy
This paper considers the requirements of a model-based systems engineering (MBSE) discipline, and the benefits that would be realized from it. A premise of MBSE
Brian A. Weiss, Craig I. Schlenoff, Gregory A. Sanders, Michelle P. Steves, Sherri Condon, Jon Phillips, Dan Parvaz
One of the most challenging tasks for uniformed service personnel serving in foreign countries is effective verbal communication with the local population. To
Patrick Hoffmann, Shaw C. Feng, Gaurav Ameta, Parisa Ghodous, Lihong Qiao
Multiple perspectives need to be included in a product development process. Engineers from different departments usually have different views on a product
Defects in nanoscale gate dielectric of MOS devices can exchange charges with the substrate via quantum mechanical tunneling. This characteristic has been
Nathan R. Newbury, Paul A. Williams, William C. Swann
We have recently demonstrated the coherent transfer of an optical signal over a 251 km link of optical fiber using the standard Doppler-cancellation approach to