NOTICE: Due to a lapse in annual appropriations, most of this website is not being updated. Learn more.

Form submissions will still be accepted but will not receive responses at this time. Sections of this site for programs using non-appropriated funds (such as NVLAP) or those that are excepted from the shutdown (such as CHIPS and NVD) will continue to be updated.

U.S. flag

An official website of the United States government

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.

Search Publications

NIST Authors in Bold

Displaying 5651 - 5675 of 73697

Wear Analysis of UHMWPE Using a Load Sum Method

October 12, 2021
Author(s)
M C. Shen, Stephen M. Hsu, John A. Tesk, A Christou
An accelerated wear test pro-cedure has been developed for wear screening of ultra-high molecular weight polyethylene (UHMWPE) using a new wear tester. Results showed that the test procedure was able to discriminate known wear level samples within seven

Wind-Excited Torsional Response of Tall Buildings

October 12, 2021
Author(s)
I Venanzi, William P. Fritz
A procedure for the evaluation of wind-induced torsional vibrations of tall buildings is proposed. The procedure is capable of accounting for the time-dependent eccentricity of the aerodynamic forces on the building surface with respect to the elastic

Wind-Tunnel Model Scale and Estimates of Wind Effects on Low-Rise Buildings

October 12, 2021
Author(s)
Michael A. Riley, Emil Simiu
Although the wind load provisions of many modern building codes are based on the results of wind tunnel testing, some effects of model scale and pressure tap quantity are still not well understood. Using test data obtained at two different scales for a low

Wireless Ad-hoc Network for Trades Tracking

October 12, 2021
Author(s)
D P. Starin, William C. Stone
The NIST Construction Metrology and Automation Group (CMAG), at the suggestion of various members of the CII FIATECH consortium, investigated the possibility of developing an economical, rugged system for approximate localization of crafts and trades

X-Ray Diffraciton and the Existence of Long Range Internal Stresses

October 12, 2021
Author(s)
M A. Delos-Reyes, M E. Kassner, Lyle E. Levine
Long range internal stresses (LRIS) are often used to explain various aspects of the mechanical behavior of materials. Recent experiments by the authors indicate an absence of measurable LRIS. X-ray line asymmetry, however, has long been interpreted as an

X-Ray Diffraction Study of the Optimization of MgO Growth Conditions for Magnetic Tunnel Junctions

October 12, 2021
Author(s)
O Se Young, C G. Lee, Alexander J. Shapiro, William F. Egelhoff Jr., Mark D. Vaudin, Jennifer L. Klamo, J Mallett, Philip Pong
MgO based magnetic tunnel junctions (MTJs) show large tunneling magnetoresistance (TMR) effects and are currently the most promising technology for the applications in magnetoelectronics devices. Conventional MTJs with amorphous AlOx barriers yield TMR

X-Ray Spectroscopy and Calibrations in the 50 eV to 60 keV Range

October 12, 2021
Author(s)
J Seely, Uri Feldman, J. Weaver, Lawrence T. Hudson
Spectrometers have been developed to record x-ray spectra in the energy range 50 eV to 60 keV. The dispersion elements are transmission crystals for energies higher than approximately 11 keV, reflection crystals for 1 keV to 20 keV, and transmission

Improved shadow correction for the Marine Optical BuoY, MOBY

October 11, 2021
Author(s)
Kenneth Voss, Edouard Leymarie, Stephanie Flora, B. Carol Johnson, Arthur Gleason, Mark Yarbrough, Michael Feinholz, Terrance Houlihan
A 3-D instrument self-shading correction has been developed for the MOBY upwelling radiance measurements. This correction was tested using the 23 year time series of MOBY measurements, at the Lanai, Hawaii site. The correction is small (less than 2%)

Microwave characterization of graphene inks

October 11, 2021
Author(s)
Jan Obrzut, Ana C. M. Moraes
Systematic charge transport characterization of solution-processed graphene inks using ethyl cellulose polymer as a binder/stabilizer, showed graphene patterns with high mobility ( 160 cm2 V-1 s-1), low energy gap, thermally activated charge transport and

Sequential Bayesian experiment design for adaptive Ramsey sequence measurements.

October 11, 2021
Author(s)
Robert D. McMichael, Sergey Dushenko, Sean Blakley
The Ramsey sequence is a canonical example of a quantum phase determination for a spin qubit, but when readout fidelity is low, as with NV centers, measurement efficiency can be increased by focusing measurement resources on the most productive settings

Calculating Voxel-Polyhedron Intersections for Meshing Images

October 9, 2021
Author(s)
Stephen A. Langer, Andrew Reid
Finite element meshes constructed from 3D images are useful in materials science and medical applications when it is necessary to model the actual geometry of a sample, rather than an idealized approximation of it. Constructing the mesh involves computing

Screening and Confirmation of Seized Drugs Utilizing Portable Raman Spectroscopy (TacticID) and Direct Analysis in Real Time-Mass Spectrometry (DART-MS)

October 8, 2021
Author(s)
Travon Cooman, Colby E. Ott, Kourtney A. Dalzell, Amber Burns, Edward Sisco, Luis E. Arroyo
The continuous change of the drug landscape in the United States demands adaptation and incorporation of emerging analytical methods that preferably allow onsite screening but are also capable of supporting the analysis of seized drugs received at forensic
Displaying 5651 - 5675 of 73697
Was this page helpful?