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 29801 - 29825 of 73461

Standards for Monitoring the Temperature of Earth From Space

October 16, 2008
Author(s)
Joseph P. Rice
The National Aeronautical and Spece Administration (NASA), the National Oceanic and Atmospheric Administration (NOAA), the Department of Defense (DOD), the Department of Energy (DOE), and other Government agencies have projects in which space-flight

Statistics in Small-Angle Scattering Using Area Detectors

October 16, 2008
Author(s)
J D. Barnes, T J. Prosa
This paper presents straightforward procedures that can be used to assess the statistical significance of small-angle scattering data obtained using area detectors. Such data invariably contain contributions from the Poisson character of the data

Stick Slip Contact Mechanics Between Dissimilar Materials

October 16, 2008
Author(s)
P M. McGuiggan
Measurements of the contact diameter as a function of loading between a mica surface and a silica surface (mica/silica) in air are reported. The contact mechanics results show that the interaction generally follows JKR theory. However, an additional and

STM Studies of Halide Adsorption on CU(100), CU(110) and CU(111)

October 16, 2008
Author(s)
Thomas P. Moffat
The potential dependent adsorption of chloride and bromide on the three low index copper surfaces has been examined with voltammetry and STM. At saturation coverage, ordered halide adlayers are observed on all three surfaces; (square root 2 x square root 2

Straight-edge Diffraction of Planck Radiation

October 16, 2008
Author(s)
Peter J. Mohr, Eric L. Shirley
The irradiance diffraction profile of a straight edge is given as a Taylor series in powers of the distance from the geometrical shadow boundary to any point in the profile for monochromatic radiation. The coefficients of the series, which are obtained as

Structural Behavior of Ceramics

October 16, 2008
Author(s)
Sheldon M. Wiederhorn, Lin-Sien H. Lum
In this chapter, we discussed ceramic materials, materials that by and large do not deform plastically when subjected to high stresses. Consequently, ceramics have a low toughness and are very flaw sensitive. Methods of toughening ceramics involve grain or

Structural Instability in the B2-Type Ordered Alloys: Zr(Ru,Rh) and Zr(Ru,Pd)

October 16, 2008
Author(s)
Richard M. Waterstrat, R Kuentzler
Low temperature properties of B2-type solid solutions have been measured in the quasi-binary systems Zr(Ru,Rh) and Zr (Ru,Pd). A continuous transition from brittle to ductile behavior occurs in both of these systems as the B2 phases become unstable with

Structural Studies of Biological Minerals in Dental Research

October 16, 2008
Author(s)
M Mathew, S. Takagi
The crystallography program at the American Dental Association Health Foundation, Paffenbarger Research Center, National Institute of Standards and Technology was initiated in the early 1970's to provide a broad structural basis for understanding the

Structure of Archaeal Alanine Dehydrogenase and Relation to Bacterial and Human Proteins

October 16, 2008
Author(s)
David Travis Gallagher, H G. Monbouquette, I Schroeder, Hugh Robinson, Marcia J. Holden, N Smith
In the hyperthermophilic archaeon Archaeoglobus fulgidus, gene AF1665 encodes an L-ala dehydrogenase (AlaDH, EC 1.4.1.1) but has been annotated as an ornithine cyclodeaminase (OCD) based on homology with the mu crystalline/ornithine cyclodeaminase protein

Subcritical Crack Growth in Brittle Materials: Mechanics

October 16, 2008
Author(s)
Sheldon M. Wiederhorn
The fracture of ceramic materials is often preceded by subcritical crack growth originating from flaws or cracks contained in these materials. Subcritical crack growth usually results from a stress-enhanced chemical interaction between the solid and

Summaries of the Projects of the Manufacturing Engineering Laboratory 1998

October 16, 2008
Author(s)
Lisa J. Fronczek, Bessmarie A. Young
The National Institute of Standards and Technology[s Manufacturing Engineering Laboratory (MEL) works with the U.S. manufacturing industry to develop and apply infrastructural technology, measurements, and standards to meet their needs. This report

Summary of ISO/TC 201 Standard: XXIX. ISO 20903: 2006 - Surface Chemical Analysis - Auger Electron Spectroscopy and X-Ray Photoelectron Spectroscopy - Methods Used to Determine Peak Intensities and Information Required When Reporting Results

October 16, 2008
Author(s)
Cedric J. Powell
This article is a brief summary of ISO Standard 20903. This standard provides information on methods for the measurement of peak intensities in Auger electron and X-ray photoelectron spectra and on uncertainties of derived peak area. It also specifies the

Superhydrophibicity as a Multiscale Phenomenon

October 16, 2008
Author(s)
Michael Nosonovsky
Wetting of superhydrophobic surfaces is studied as a multiscale process involving the macroscale (water droplet size), microscale (surface texture size), and nanoscale. It is shown that proper understanding of the contact angle hysteresis and the Cassie

Surface Applications of Cavity Ring-Down Spectroscopy

October 16, 2008
Author(s)
A C. Pipino, Curtis Meuse, J P. Hoefnagels, Vitalii I. Silin, John T. Woodward IV
We report preliminary results describing two new applications of cavity ring-down spectroscopy (CRDS): 1) detection of non-absorbing species by refractive-index change using surface-plasmon-resonance (SPR)-enhanced CRDS, and 2) C-H overtone detection by

Surface Constrained Plasticity: Oxide Rupture and the Yield Point Process

October 16, 2008
Author(s)
D E. Kramer, W Gerberich, K A. Yoder
Nanoindentation of single crystals has been a topic of recent investigations. This is a result of their ability to withstand near theoretical stresses without showing signs of plastic deformation. When plasticity occurs, it produces a yield point, a sudden

Surface Effects on Capped and Uncapped Nanocrystals

October 16, 2008
Author(s)
Garnett W. Bryant, W Jaskolski
Surface effects significantly influence the functionality of semiconductor nanocrystals. A theoretical understanding of these effects requires an atomic-scale description of the surface. We present an atomistic tight-binding theory of the electronic and

Surface Patterning Using Microchannel-Confined Surface Transformation ( ST)

October 16, 2008
Author(s)
Chang Xu, Kathryn L. Beers
Most surface patterned polymer brushes synthesized to date contain only one type of polymer and the remaining surface areas are either bare substrate or SAM. To further control the entire surface area, several methods have been developed to fabricate
Displaying 29801 - 29825 of 73461
Was this page helpful?