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.
In a Key Comparison experiment, the Mutual Recognition Arrangement (MRA) requires the calculation of the Degrees of Equivalence (DoE) and the accompanying...
Recent theoretical work has produced quantitatively accurate potential-energy surfaces for water with common gases. These pair potentials have been used to...
We describe a new form of a fluid state equation, based on a conceptual extrapolation from the Debye equation for the specific heat of solid materials. The...
Jennifer M. Campbell, Stephen Stein, Paul S. Blank, Jonathan Epstein, Marvin L. Vestal, Alfred L. Yergey
The effects of laser fluence on ion formation in MALDI was studied using a tandem TOF mass spectrometer using a Nd-YAG laser and alpha-cyano hydrocinnamic acid...
This article describes how librarians at the Research Library at the National Institute of Standards and Technology planned and conducted focus group interviews...
This paper summarizes efforts at the National Institute of Standards and Technology to develop a waveform sampling and digitizing system with accuracy...
The partitioning of an adaptive grid for distribution over parallel processors is considered in the context of adaptive multilevel methods for solving partial...
John H. Lehman, Katie Hurst, Anne Dillon, A. M. Radojevic, R M. Osgood
Multiwall carbon nanotubes (MWNTs) were applied in a bulk layer to a pyroelectric film to increase the detector sensitivity nearly fourfold without a...
Abstract--A modified International System of units, SI, based on simply specifying exact numeric values of seven physical constants, is described. This ?set of...
Exact analytical solutions are used to investigate the complex eigenfrequencies of tensioned beams with a viscous damper attached transversely near a support...
Exact analytical solutions are formulated for the complex eigenmodes of tensioned beams with an intermediate viscous damper. The problem is formulated using the...
Cobalt/gold (Co/Au) bimetallic nanoparticles are prepared by synthesizing Au via chemical reduction in the presence of pre-synthesized Co nanoparticles...
Alignment for tomography using a transmission electron microscopy frequently uses colloidal gold particles as fiducial reference marks. Typically, there is an...
Automated peak identification in electron beam excited x-ray microanalysis with energy dispersive x-ray spectrometry is subject to occasional mistakes even on...
David Point, William C. Davis, Steven J. Christopher, Michael B. Ellisor, Rebecca S. Pugh, Olivier F. Donard, Paul R. Becker, Barbara J. Porter, Stephen A. Wise
Boonserm Kulvatunyou, J Jang, B Jeong, J Chang, Hyunbo Cho
Integrating distributed manufacturing systems is a longstanding dream of industrial engineers. The advent of Internet technologies has provided opportunities to...
John Labenski, Weston L. Tew, Sae Woo Nam, Samuel P. Benz, Paul D. Dresselhaus, Charles J. Burroughs
A conventional technique for scaling thermal noise power in Johnson Noise Thermometry (JNT) is via resistance ratios. We describe measurements in the low to...
Inspired by the development of a collaborative plan on understanding wildland fires, their interaction with weather and the built environment, the National...
NIST has developed the capability to measure noise parameters on a wafer int he 1-12.4 GHz range. We describe the measurement method and the uncertainty...
A S. Tremsin, Daniel S. Hussey, David L. Jacobson, Muhammad D. Arif, Robert Gregory Downing, W B. Feller, David F. Mildner
A new type of high performance and compact neutron collimator can be manufactured from Gd- or B-doped microchannel plates (MCPs). Structures only a few mm thick...
Jordi Mateu, James Booth, Carlos Collado, David Seron, Juan M. O'Callaghan
This work presents a general procedure for calculating intermodulation distortion in coupled-resonator filters with non-uniform distributed nonlinear properties...
Sankar Jayaram, Uma Jayaram, Young J. Kim, Charles Dechenne, Kevin W. Lyons, Craig Palmer, Tatsuki Mitsui
In this paper we report on two engineering case studies that have been conducted as part of a Virtual Assembly Technology Consortium. The objectives of the case...
Yicheng Wang, Andrew D. Koffman, Gerald FitzPatrick
We describe dissipation factor measurements of 10 pF fused-silica capacitance standards from 50 Hz to 20 kHz, using a toroidal cross capacitor and a 10 pF...
Yi-hua D. Tang, Clark Hamilton, David Deaver, Harold Parks, Barry Wood
The 7th interlaboratory comparison (ILC) of Josephson Voltage Standards (JVS) at 10 V, sponsored by the National Conference of Standard Laboratories...