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Displaying 48101 - 48125 of 74075

Decoherence of Quantum Superpositions Through Coupling to Engineering Reservoirs

January 1, 2000
Author(s)
C J. Myatt, B E. King, Q A. Turchette, C A. Sackett, D Kielpinski, Wayne M. Itano, W M. Monroe, David J. Wineland
The theory of quantum mechanics applies to closed systems. In such ideal situations, a single atom can, for example, exist simultaneously in a superposition of two different spatial locations. In contrast, real systems always interact with their

Definitions of Terms and Modes Used at NIST for Value-Assignment of Reference Materials for Chemical Measurements

January 1, 2000
Author(s)
Willie E. May, Reenie M. Parris, C M. Beck, John D. Fassett, Robert R. Greenberg, Franklin R. Guenther, Gary W. Kramer, Stephen Wise, T E. Gills, Jennifer C. Colbert, R J. Gettings, Bruce S. MacDonald
Standard Reference Materials (SRMs) are certified reference materials (CRMs) issued by NIST that are well-characterized using state-of-the-art measurement methods and/or techniques for the determination of chemical compositon and physical properties. SRMs

Density Variations in Scanned Probe Oxidation

January 1, 2000
Author(s)
K Morimoto, F Perez-murano, John A. Dagata
The density of oxide nanostructures produced by scanned probe microscopy (SPM) is a function of substrate doping and voltage-pulse parameters. The total oxide thickness and molar-volume ratio of SPM oxide, obtained from high-resolution cross-sectional

Direct Measurement of Valence-Charge Asymmetry by X-Ray Standing Waves

January 1, 2000
Author(s)
Joseph C. Woicik, E Nelson, P Pianetta
By detecting valence-photoelectron under condition of strong x-ray Bragg reflection, we have determined that a majority of GaAs valence charge resides on the anion sites of this heteropolar crystal, in quantitative agreement with the Ga-As bond polarity as

Display Characteristics and the Impact on Usability for Stereo

January 1, 2000
Author(s)
John W. Roberts, Oliver T. Slattery
Over the past decade, the number of electronic display technologies available to consumers has risen dramatically, and the capabilities of existing technologies have expanded. This proliferation of choices provides new opportunities for visual stereo
Displaying 48101 - 48125 of 74075