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 43276 - 43300 of 143784

EFFECT OF AL2O3 NANOLUBRICANT ON A TURBO-BII R134A POOL BOILING SURFACE

March 3, 2012
Author(s)
Mark A. Kedzierski
This paper quantifies the influence of Al2O3 nanoparticles on the pool boiling performance of R134a/polyolester mixtures on a Turbo-BII-HP boiling surface. An Al2O3 nanolubricant (a lubricant containing dispersed nano-size particles) was made by suspending

Extension of the NIST spectral power-responsivity calibration service to 2500 nm

March 2, 2012
Author(s)
George P. Eppeldauer, Howard W. Yoon, Jinan Zeng, Thomas C. Larason, Jeanne M. Houston, Vladimir Khromchenko
The National Institute of Standards and Technology (NIST) is working to extend the upper wavelength limit of the spectral power-responsivity calibration service from 1800 nm to 2500 nm. This extension is based on extended-InGaAs (EIGA) transfer- and

Interactions of 14C-labeled multi-walled carbo nanotubes with soil minerals in water

March 2, 2012
Author(s)
Liwen Zhang, Elijah Petersen, Wen Zhang, Yongsheng Chen, Miguel Cabrera, Qingguo Huang
One of the critical factors related to the environmental fate of carbon nanotubes (CNTs) is their phase distribution between soil or sediment and water. To quantitatively understand the interaction between the model soil components and multiwalled carbon

Optical fibre-coupled cryogenic radiometer with carbon nanotube absorber

March 2, 2012
Author(s)
David J. Livigni, Nathan A. Tomlin, Christopher L. Cromer, John H. Lehman
A cryogenic radiometer was constructed for direct-substitution optical-fibre power measurements. The cavity is intended to operate at the 3 K temperature stage of a dilution refrigerator or 4.2 K stage of a liquid cryostat. The optical fibre is removable

Transitory Temperatures of Organic-Film Coated Specimens under Outdoor Exposure

March 2, 2012
Author(s)
William C. Thomas, Christopher C. White, Walter E. Byrd
A mathematical model is presented and validated for predicting the temperature of thin polymeric films bonded to substrate materials. The National Institute of Standards and Technology provided specimen temperature and simultaneous weather data for tests

An absolute cavity pyrgeometer to measure the absolute outdoor longwave irradiance with traceability to International System of Units, SI

March 1, 2012
Author(s)
Ibrahim Reda, Jinan Zeng, Jonathan Scheuch, Leonard Hanssen, Daryl Myers, Boris Wilthan, Tom Stoffel
This article describes a method of measuring the absolute outdoor longwave irradiance using an absolute cavity pyrgeometer (ACP). The ACP consists ofa domeless thermopile pyrgeometer, gold- plated concentrator, temperature controller, and data acquisition

An Assessment of Methods for Determining Wind Loads (NIST TN 1738)

March 1, 2012
Author(s)
Emil Simiu, Chris Letchford, Nicholas Isyumov, Arindam G. Chowdhury, Dong Hun Yeo
The purpose of this work is to present an assessment of methods for determining wind loads on buildings and other structures that warrant comment, correction or improvement. The assessment is intended to serve as a resource as a new version of the ASCE-7

Catalyst-free GaN Nanowires as Nanoscale Light Emitters

March 1, 2012
Author(s)
Kristine A. Bertness, Norman A. Sanford, John B. Schlager, Alexana Roshko, Todd E. Harvey, Paul T. Blanchard, Matthew D. Brubaker, Andrew M. Herrero, Aric W. Sanders
Catalyst-free growth of GaN nanowires with molecular beam epitaxy produces material of exceptionally high quality with long minority carrier lifetimes and low surface recombination velocity. The nanowires grow by thermodynamic driving forces that enhance

Challenges in Microbial Sampling in the Indoor Environment

March 1, 2012
Author(s)
Jayne B. Morrow, Autumn S. Downey, Jordan Peccia
This report summarizes the results of the Challenges in Microbial Sampling in the Indoor Environment Workshop held on February 14-15, 2011 at the National Institute of Standards and Technology in Gaithersburg, Maryland.
Displaying 43276 - 43300 of 143784
Was this page helpful?