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Displaying 58101 - 58125 of 74189

Fabricating Nanostructures Using Optical Forces on Atoms

January 1, 1994
Author(s)
R Gupta, R E. Scholten, Jabez J. McClelland, Robert Celotta
We have demonstrated the use of the optical dipole force in a standing wave to focus chromium atoms into narrow lines as they deposit onto a silicon substrate. An array of chromium lines has been fabricated, with width of 65 nm and spacing of 213 nm.

Feature Recognition for Manufacturability Analysis

January 1, 1994
Author(s)
William Regli, Satyandra K. Gupta, D Nau
While automated recognition of features has been attempted for a wide range of applications, no single existing approach possesses the functionality required to perform manufacturability analysis. In this paper, we present a methodology for taking a CAD

Fire Safety of Passenger Trains: A Review of Current Approaches and of New Concepts (TN 1406)

January 1, 1994
Author(s)
Richard D. Peacock, Richard W. Bukowski, Walter W. Jones, Paul A. Reneke, Vyto Babrauskas, James E. Brown
Recent advances in passenger guided transportation, fire test methods, and hazard analysis necessitate re-examination of requirements for fire safety. Several studies have indicated nearly random ability of current tests to predict actual fire behavior

Flow of Alternative Agents in Piping

January 1, 1994
Author(s)
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 tire protection are being studied. Due to the remote location of the agent storage bottle, piping

Force Calibrations in the Nanonewton Regime

January 1, 1994
Author(s)
Lowell P. Howard, E C. Teague
An instrument is described which is shown capable of making preliminary measurements of nanonewton forces. A technique is described which allows absolute calibrations of small forces to be made in terms of electrical measurements.
Displaying 58101 - 58125 of 74189
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