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Displaying 48801 - 48825 of 73697

Raman Intensity Calibration With Glass Luminescence Standards

January 1, 2000
Author(s)
E S. Etz, Wilbur S. Hurst, Steven J. Choquette
This Paper describes the NIST development of standards and procedures for the calibration of the Raman Spectral Intensity. The work is based on the NIST proposal of the use of luminescent glass standards for the transfer of the white light calibration to

Real-Time Dielectric Measurements During Extrusion of Filled Polymers

January 1, 2000
Author(s)
M M. McBrearty, Anthony J. Bur, S C. Roth
Mineral fillers are added to extend and modify physical properties of polymers. To achieve porcessing control of mixing, real-time measurements are needed. Previuos work has shown that dielectric sensors can measure concentrations of fillers in non-polar

Real-Time Displacement Measurements With a Fabry-Perot Cavity and a Diode Laser

January 1, 2000
Author(s)
Lowell P. Howard, Jack A. Stone Jr.
We present the basic operating principles of a traceable measurement system for use with scanned probe microscopes and nanometer-resolution displacement sensors. Our method is based upon a tunable external-cavity diode laser system which is Pound-Drever

Recent Progress in Nanoscale Indentation of Polymers Using the AFM

January 1, 2000
Author(s)
Mark R. VanLandingham, John S. Villarrubia, G Meyers
Regardless of the type of test, reliable indentation measurements require knowledge of the shape of the indenter tip. For indentation measurements involving sub-micrometer scale contacts, accurate knowledge of the tip shape can be difficult to achieve. In

Reduced Gravity Combustion of Thermoplastic Spheres

January 1, 2000
Author(s)
Jiann C. Yang, Anthony P. Hamins, Michelle K. Donnelly
A series of low-gravity experiments were conducted to investigate the combustion of supported thermoplastic polymer spheres under varying ambient conditions. The three types of thermoplastics investigated were polymethyl methacrylate (PMMA), polypropylene

Rotational Signatures of Chemical Agents and Related Compounds

January 1, 2000
Author(s)
R D. Suenram, Angela R. Hight Walker, Gerald T. Fraser, David F. Plusquellic, R S. DaBell, Pamela M. Chu, George C. Rhoderick, A C. Samuels, J O. Jensen, Pavol Krivosik, J M. Lochner
The rotational spectra of more than twenty different chemical-warfare agents, precursors, and decomposition products have been studied using the technique of Fourier-Transform MicroWave (FTMW) spectroscopy. The compounds studied include the four common G
Displaying 48801 - 48825 of 73697
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