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Displaying 45726 - 45750 of 74141

Microhotplate Platforms for Chemical Sensor Research

June 1, 2001
Author(s)
Stephen Semancik, Richard E. Cavicchi, M C. Wheeler, J E. Tiffany, G Poirier, R M. Walton, John S. Suehle, B. Panchapakesan, D. E. DeVoe
This paper describes the development and use of microdevices and microarrays in chemical sensor research. The surface-micromachined microhotplate structure common within the various platforms included here was originally designed for fabricating

New NIST Mercury Triple-Point Cells

June 1, 2001
Author(s)
Gregory F. Strouse, J Lippiatt
Six new Hg triple-point (TP) cells (234.3156 K) were manufactured in the NIST PRT Laboratory for use in the realization of the International Temperature Scale of 1990 (ITS90). The fixed-point cells consisted of both glass and stainless steel designs with

NIST Activities in Support of Space-Based Radiometric Remote Sensing

June 1, 2001
Author(s)
Joseph P. Rice, B C. Johnson
This paper provides an overview of NIST research and development in optical radiometry in the field of space-based remote sensing. The applications in this field can be generally divided into two areas: environmental and defense. In the environmental

NIST Colorimetric Calibration Facility for Displays - Part 2

June 1, 2001
Author(s)
F Manoocheri, Steven W. Brown, Yoshi Ohno
velopment of a calibration facility for spectroradiometric, colorimetric, and goniometric measurements of displays, display colorimeters, and spectroradiometers has been completed at the National Institute of Standards and Technology (NIST). An overview of

NIST Reference Goniophotometer for Specular Gloss Measurements

June 1, 2001
Author(s)
Maria E. Nadal, Ambler Thompson
The measurement of specular gloss consists of comparing the luminous reflectance from a test specimen to that from a gloss standard, under the same geometric conditions. The reference goniophotometer described here was designed and characterized to comply

OOF: An Image-Based Finite Element Analysis of Material Microstructure

June 1, 2001
Author(s)
Stephen A. Langer, W Carter, Lin-Sien H. Lum
The determination of macroscopic properties of a material given its microscopic structure is of fundamental importance to materials science. We present an overview of two public domain programs which jointly predict macroscopic behavior, starting from an

Pauli Blocking of Collisions in a Quantum Degenerate Atomic Fermi Gas

June 1, 2001
Author(s)
B. L. DeMarco, S Papp, D S. Jin
We have produced an interacting quantum degenerate Fermi gas of atoms composed of two spin-states of magnetically trapped 40K. The relative Fermi energies are adjusted by controlling the populations in each spin-state. Thermodynamic measurements reveal a

Photocurrent Measurement of PC and PV HgCdTe Detectors

June 1, 2001
Author(s)
George P. Eppeldauer, R J. Martin
Novel preamplifiers for working standard PC and PV HgCdTe detectors have been developed to maintain the spectral responsivity scale of the National Institute of Standards and Technology (NIST) in the wavelength range of 5 m to 20 m. The linear PC mode

Process Descriptions

June 1, 2001
Author(s)
Joshua Lubell
We consider the use of XML (Extensible Markup Language) for applications involving discrete processes. Examples of such processes include production scheduling, process planning, workflow, business process re-engineering, simulation, process realization

Quality Control of PCR Primers Used in Multiplex STR Amplifcation Reactions

June 1, 2001
Author(s)
John M. Butler, J E. Devaney, M A. Marino, Peter M. Vallone
Reliable amplification of short tandem repeat (STR) DNA markers with the polymerase chain reaction (PCR) is dependent on high quality PCR primers. The particular primer combinations and concentrations are especially important with multiplex amplification

Quantum Gates Using Motional States in an Optical Lattice

June 1, 2001
Author(s)
E Charron, Eite Tiesinga, F H. Mies, Carl J. Williams
We Study an implementation of a two-qubit universal quantum gate with neutral 87Rb atoms trapped in a far-detuned two-color optical lattice. The qubit states and represent the ground and first excited motional states of an atom in a laser induced potential

Referencing Dilution-Based Trace Humidity Generators to Primary Humidity Standards

June 1, 2001
Author(s)
Peter H. Huang, Gregory E. Scace, Joseph T. Hodges
We describe a technique for measuring the trace humidity level delivered by a permeationtube type moisture generator (PTMG). Amount fractions in the range 10 nmol/mol to 100 nmol/mol of H2O in N2 carrier gas were considered. The measurements are referenced
Displaying 45726 - 45750 of 74141
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