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 18701 - 18725 of 73697

Cryptographic Module Validation Program (CMVP)

December 1, 2014
Author(s)
Apostol T. Vassilev, Larry Feldman, Gregory A. Witte
The Cryptographic Module Validation Program (CMVP) validates cryptographic modules for compliance with Federal Information Processing Standard (FIPS) Publication 140-2, Security Requirements for Cryptographic Modules, and other cryptography based standards

Dissipation due to pure spin current generated by spin pumping

December 1, 2014
Author(s)
Wayne M. Saslow, Tomohiro Taniguchi
Based on spin-dependent transport theory and thermodynamics, we develop a generalized theory of the Joule heating in the presence of a spin current. Along with the conventional Joule heating consisting of an electric current and electro-chemical potential

Flat lens criterion by small-angle phase

December 1, 2014
Author(s)
Peter Ott, Mohammed H. Al Shakhs, Henri Lezec, Kenneth J. Chau
It is sometimes possible to image using a flat lens consisting of planar, uniform media. There is conceptual division between theoretical flat lens proposals, which require exotic properties such as negative index or counter-intuitive behavior such as

In-situ Temperature Calibration Capability for Dimensional Metrology

December 1, 2014
Author(s)
Prem K. Rachakonda, Daniel S. Sawyer, Balasubramanian Muralikrishnan, Christopher J. Blackburn, Craig M. Shakarji, Gregory F. Strouse, Steven D. Phillips
The Dimensional Metrology Group (DMG) at the National Institute of Standards and Technology (NIST) has the capability to perform large range dimensional measurements in a facility, called the Tape Tunnel. The Tape Tunnel is equipped with a 60 m long steel

ISO TC 184/SC 4 product and manufacturing information (PMI) EXPRESS models

December 1, 2014
Author(s)
Thomas R. Thurman
This document provides product and manufacturing information (PMI) EXPRESS models to be used in ISO 10303-242 edition 2. The models include representations for the following PMI symbology: thread symbols, surface texture symbols, edge condition symbols

Multi-Scale Investigation of the Performance of Limestone in Concrete

December 1, 2014
Author(s)
Dale P. Bentz, Ahmad Ardani, Tim Barrett, Scott Z. Jones, Didier Lootens, Max A. Peltz, Taijiro Sato, Paul E. Stutzman, Jussara Tanesi, Jason Weiss
Limestone (calcium carbonate) has long been a critical component of concrete, whether as the primary raw material for cement production, a fine powder added to the binder component, or a source of fine and/or coarse aggregate. This paper focuses on the

Nanomanufacturing Metrology for Cellulosic Nanomaterials: an Update

December 1, 2014
Author(s)
Michael T. Postek
The development of the metrology and standards for advanced manufacturing of cellulosic nanomaterials (or basically, wood-based nanotechnology) is imperative to the success of this rising economic sector. Wood-based nanotechnology is a revolutionary

New Methods for Measurement of Neutron Detector Efficiency up to 20 MeV

December 1, 2014
Author(s)
Fred B. Bateman, Allan D. Carlson, N. A. Kornilov, S M. Grimes, T N. Massey, C E. Brient, D E. Carter, J E. O'Donnell, R. C. Haight, N Boukharouba
A new approach to neutron detector effciency has been taken. A neutron detector has been calibrated with a Cf-252 source at low energy. The calibration was extended to higher neutron energies by use of symetric reactions such as A + A ! (2A - 1) + n:

Potential Hazard Due to Induced Radioactivity Secondary to Radiotherapy: The Report of AAPM Task Group 136

December 1, 2014
Author(s)
Fred B. Bateman, Bruce R. Thomadsen, Ravinder Nath, Jonathan Farr, Cal Glisson, Mohammad K. Islam, T. LaFrance, M. E. Moore, X. G. Xu, Mark Yudelev
External-beam radiation therapy mostly uses high-energy photons (x-rays) produced by medical accelerators but many facilities now use proton beams and a few use neutrons. High energy photons offer several advantages over lower energy photons in terms of
Displaying 18701 - 18725 of 73697
Was this page helpful?