U.S. flag

An official website of the United States government

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.

Search Publications

NIST Authors in Bold

Displaying 40326 - 40350 of 74099

Dilute Al-Mn alloys for superconductor device applications

December 17, 2003
Author(s)
Steve Ruggiero, Anthony Williams, W. H. Rippard, A. Clarke, Steven Deiker, Leila R. Vale, Joel N. Ullom
We discuss results on the superconducting and electron-transport properties of Mn doped Al produced by sputter deposition. The critical temperature of Al has been systematically reduced to below 50 mK by doping with 1000-3000 ppm Mn. Values of the α

Suppression of excess noise in transition-edge sensors using magnetic field and geometry

December 17, 2003
Author(s)
Joel N. Ullom, William B. Doriese, Gene C. Hilton, James A. Beall, Steven Deiker, Kent D. Irwin, Carl D. Reintsema, Leila R. Vale, Yizi Xu
We report recent progress at NIST on Mo/Cu Transition-Edge Sensors (TESs). While the signal- band noise of our sensors agrees with theory, we observe excess high-frequency noise. We describe this noise and demonstrate that it can be heavily suppressed by a

The Advanced Technology Solar Spectroscopic Imager (ATSSI) - a Novel Experiment Employing a Transition-Edge Sensor to Probe the Soft X-Ray Solar Corona

December 17, 2003
Author(s)
P F. Boerner, D S. Martinez-Galarce, K Wamba, B. Cabrera, Steven Deiker, Kent D. Irwin, T W. Barbee, P F. Baker
The Advanced Technology Solar Spectroscopic Imager (ATSSI) is a sounding rocket-borne experiment that will employ a Transition-Edge Sensor (TES) placed at the focus of a Wolter-I mirror to study large active region loops in the solar corona. The TES

Direct observation of photon pairs at a single output port of a beam-splitter interferometer

December 16, 2003
Author(s)
Matthew Shaw, Giovanni Di Giuseppe, A. Sergeinko, Bahaa E. A. Saleh, Malvin C. Teich, Aaron J. Miller, Sae Woo Nam
The seminal experiment carried out by Hong, Ou, and Mandel some fifteen years ago is one of the most important in the annals of quantum optics. This experiment demonstrated that two indistinguishable photons incident on a simple beam splitter interfere in

INVESTIGATION OF NANODISPERSION IN POLYSTYRENE -MONTMORILLONITE NANOCOMPOSITES BY SOLID STATE NMR

December 15, 2003
Author(s)
S Bourbigot, Jeffrey W. Gilman, David L. VanderHart, W H. Awad, Rick D. Davis, A B. Morgan, C A. Wilkie
Nanocomposites result from combinations of materials with vastly different properties at the nanometer scale. These materials exhibit many unique properties, such as improved thermal stability, reduced flammability, and improved mechanical properties. Many

Nanometrology - FY 2003 Program and Selected Accomplishments

December 15, 2003
Author(s)
Clare M. Allocca, Stephen W. Freiman
The emphasis on nanotechnology around the world is leading to the development and commercialization of unique products based upon significantly smaller devices and material ensembles. Materials at the nanoscale in three dimensions (NEMS, MEMS), two

Government/Industry Interactions in the Global Standards System

December 11, 2003
Author(s)
Roger Marks, Robert E. Hebner
We review the evolution of the global standards system and its relationship to industry. We then discuss some of the approaches that governments have taken in order to modify the system for the benefit of domestic and worldwide economic development. We use

Molecular Devices formed by Direct Monolayer Attachment to Silicon

December 10, 2003
Author(s)
Curt A. Richter, Christina A. Hacker, Lee J. Richter
We present the results of studies of solution-based attachment of long-chain aliphatic molecules to hydrogen-terminated Si surfaces formed to pursue the electrical properties of organic monolayers and as a first step towards creating hybrid silicon

Report of the 88th National Conference on Weights and Measures

December 9, 2003
Author(s)
Linda D. Crown, K M. Dresser, Steven E. Cook, Juana S. Williams, R C. Suiter, L T. Sebring, H V. Oppermann
The 88th Annual Meeting of the National Conference on Weights and Measures (NCWM) was held July 13 through 17, 2003, at the John Ascuaga s Nugget Hotel in Sparks, NV. The theme of the meeting was, Moving Strategically into the Future. Reports by the NCWM

Correcting For Systematic Errors In One-Port Calibration-Standards

December 5, 2003
Author(s)
John R. Juroshek, Denis X. LeGolvan
This paper describes how to correct for systematic errors in one-port vector network analyzer calibrations that are caused by modeling errors in the one-port calibration standards. The paper shows how to correct an open-short-load calibration that was made

Design and Characterization of a Superconducting Nonlinear Reference Device

December 5, 2003
Author(s)
James Booth, Kenneth Leong, Susan A. Schima, Jeffrey Jargon, Donald C. DeGroot
Abstract ' We describe the design, fabrication, and testing of a nonlinear reference device that has a calculable phase relationship between the fundamental signal and higher harmonic signals in the microwave range. Such a device would be useful for

State-Space Modeling of Slow-Memory Effects Based on Multisine Vector Measurements

December 4, 2003
Author(s)
Dominique Schreurs, Kate Remley, M. Myslinski, R. Vandermissen
Non-linear microwave devices and circuits often exhibit slow-memory effects. When subjected to two-tone, or more general multisine excitations, the characteristics of these devices and circuits depend on the offset frequency between the tones. Since

A Fundamental Equation for Trifluoromethane (R-23)

December 1, 2003
Author(s)
S G. Penoncello, Eric Lemmon, R. T. Jacobsen, Z Shan
A formulation for the thermodynamic properties of trifluoromethane R-23) is presented. The equation is valid for single-phase and saturation states from the triple point (1 18.02 K) to 475 K at pressures up to 120 MPa. The formulation includes an equation

A Suite of Homes Representing the U.S. Housing Stock

December 1, 2003
Author(s)
Andrew K. Persily, Dennis D. Leber
In order to facilitate nationwide analysis of ventilation and indoor air quality issues in residential buildings, a set of homes has been defined to represent the housing stock of the United States. This so-called suite of homes is based on two residential

Accessibility Test Suite Principles Document

December 1, 2003
Author(s)
Frederick E. Boland Jr.
The goal of this document is to help W3C editors write better specifications, by making a specification easier to interpret without ambiguity and clearer as to what is required in order to conform. It focuses on how to define and specify conformance. It

Air and Pollutant Transport From Attached Garages to Residential Living Spaces

December 1, 2003
Author(s)
Steven J. Emmerich, Cynthia H. Reed
NIST is conducting a study on the indoor air quality (IAQ) impacts and engineering solutions related to the transport of pollutants from attached garages to residential living spaces. Natural or fan-induced pressure differences across air leakage paths in

An Optimal Vector-Network-Analyzer Calibration Algorithm

December 1, 2003
Author(s)
Dylan Williams, Chih-Ming Wang, Uwe Arz
We present an iterative algorithm for calibrating vector network analyzers based on orthogonal distance regression. The algorithm features a robust, yet efficient, search algorithm, a complete error analysis that includes both random and systematic errors
Displaying 40326 - 40350 of 74099
Was this page helpful?