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.
Thomas G. Cleary, William L. Grosshandler, Jiann C. Yang
As part of the USAF, Army, Navy and FAA sponsored halon replacement project, the pipe flow characteristics of selected alternative agents for engine nacelle...
Howard H. Harary, C Buchard, P L heritier, J Dufraigne, P Chollet
The careful study of manufactured parts is a prerequisite for their intelligent inspection. For this study, we conducted a survey of the processes for making...
Jabez J. McClelland, R E. Scholten, R Gupta, Robert Celotta
We demonstrate the use of a standing-wave laser beam to focus chromium atoms as they deposit onto a silicon surface. A permanent array of Cr lines has been...
The emphasis on International Standards Organization (ISO) certification of laboratories has resulted in a renewed interest in NIST traceable standards for...
During the manufacturing of present-day integrated circuits, certain measurements must be made of the submicrometer structures composing the device with a high...
The resonant frequency of a sphere in contact with a flat surface was measured as a function of loading force for contacting materials with different elastic...
The most significant contribution to uncertainty in the measurement of photomask linewidths is the rough shape of the edge of the etched chrome lines. This...
Jun-Feng Song, F Rudder, Theodore V. Vorburger, A Hartman, Brian R. Scace, J Smith
Microform calibrations include the measurement of complex profile forms and position errors of micrometer scale in combination with the measurement of...
The National Institute of Standards and Technology has investigated the efficacy of indicating gaging systems used to measure pitch diameter and functional size...
An instrument is described which is shown capable of making preliminary measurements of nanonewton forces. A technique is described which allows absolute...