NOTICE: Due to a lapse in annual appropriations, most of this website is not being updated. Learn more.

Form submissions will still be accepted but will not receive responses at this time. Sections of this site for programs using non-appropriated funds (such as NVLAP) or those that are excepted from the shutdown (such as CHIPS and NVD) will continue to be updated.

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 46851 - 46875 of 73697

Combinatorial Materials Science for Polymer Thin-Film Dewetting

December 1, 2000
Author(s)
J C. Meredith, A P. Smith, Alamgir Karim, Eric J. Amis
A combinatorial technique is described for rapid measurement of phenomena associated with thin-film polymer science. Thin-film libraries of polystyrene on silicon, containing systematic variations in film thickness and temperature, are prepared with a

Concrete Materials Database

December 1, 2000
Author(s)
C B. Oland, Chiara C. Ferraris
ACI Committee 126 on Database Formats for Concrete Materials Properties was organized in 1990 to develop and report information on database formats for concrete and related materials. The committee is accomplishing this mission by preparing guides for use

Control of Flow Direction in Microfluidic Devices with Polyelectrolyte Multilayers

December 1, 2000
Author(s)
S L. Barker, David J. Ross, Michael J. Tarlov, Michael Gaitan, Laurie E. Locascio
Electroosmotic flow (EOF) is commonly utilized in microfluidics. Because the direction of the EOF can be determined by the substrate surface charge, control of the surface chemical state offers the potential, in addition to voltage control, to direct the

Crystal Structure of the Monoclinic Perovskite Sr 3.94Ca d1.31^Bi 2.70 O 12

December 1, 2000
Author(s)
Winnie K. Wong-Ng, James A. Kaduk, Qingzhen Huang, Robert S. Roth
The crystal structure of the low temperature oxidized form of Sr 3.94Ca 1.31Bi 2.70O 12 has been determined using a combined Rietveld refinement technique with neutron, synchrotron, and powder x-ray diffraction data. The structure is pseudo-orthorhombic

Development of Arrays of TES X-ray Detectors

December 1, 2000
Author(s)
Steven Deiker, James A. Chervenak, Gene C. Hilton, Martin Huber, Kent D. Irwin, John M. Martinis, Sae Woo Nam, David A. Wollman
Both the x-ray astrophysics and microanalysis communities have a need for large format arrays of high-spectral-resolution x-ray detectors. To meet this need, we are transferring our successful single pixel Transition Edge Sensor (TES) x-ray

Directivity of the Test Device in EMC Measurements 1

December 1, 2000
Author(s)
Galen H. Koepke, David A. Hill, John M. Ladbury
We present a statistical theory for estimating the directive characteristics of unintentional emitters based on the electrical size of the device. We compare this theory to directivity derived from pattern measurements in an anechoic chamber. We also use

Editor's Preface

December 1, 2000
Author(s)
Kalman D. Migler, S G. Hatzikiriakos
The work of J.R. Rice has been central to developments in solid mechanics over the last thirty years. This volume collects 21 articles on deformation and fracture in honor of J.R. Rice on the occasion of his 60th birthday. Contributors include students (P

Elastic Flexure of Bilayered Beams Subject to Strain Differentials

December 1, 2000
Author(s)
Tze J. Chuang, S K. Lee
The residual stresses present in a thin film and the curvatures formed at its substyrate during deposition have been a great concern to electrochemists and process engineers. Here a new hybrid analytical method is presented to reanalyze the flexural

Elastic Properties of Model Porous Ceramics

December 1, 2000
Author(s)
A P. Roberts, Edward Garboczi
The finite element method (FEM) is used to study the influence of porosity and pore shape on the elastic properties of model porous ceramics. Young's modulus of each model is practically independent of the solid Poisson's ratio. At a sufficiently high

Embedded Decoupling Capacitance Materials Characterization

December 1, 2000
Author(s)
Jan Obrzut
The dielectric constant of the embedded capacitance materials was measured in the frequency range from 100 Hz to 5 GHz. The testing included evaluation of the capacitance density, leakage current, and the effect of HAST on the capacitance. A test specimen

Emission-Line Intensity Ratios in FeXVII Observed with a Microcalorimeter on an Electron Beam Ion Trap

December 1, 2000
Author(s)
J M. Laming, I Kink, E Takacs, James V. Porto, John D. Gillaspy, E Silver, H. Schnopper, Simon R. Bandler, N Brickhouse, S Murray, M Barbera, A K. Bhatia, G. A. Doschek, N. Madden, D Landis, J. Beeman, E. E. Haller
We report new observations of emission line intensity ratios of Fe XVII under controlled experimental conditions, using the National Institute of Standards and Technology electron beam ion trap (EBIT) with a microcalorimeter detector. . . .Both R-matrix

Enthalpies of Formation in the Pseudobinary LaAl x Ni 5-x System

December 1, 2000
Author(s)
R Klein, P A. O'Hare, I Jacob
The pseudobinary system LaAl xNi 5-x has a composition limit at x {nearly equal to} 1.3. The standard molar enthalpies of formation fHm (298.15 K) were determined by solution calorimetry in HCl (c = 6 mol dm -3) to be -(129.4 +6.5) kJ mol -1 for x = 0.25;

Epitaxial Si-Based Tunnel Diodes

December 1, 2000
Author(s)
P E. Thompson, K D. Hobart, M E. Twigg, S L. Rommel, N Jin, P R. Berger, R Lake, A C. Seabaugh, P Chi, David S. Simons
Tunneling devices in combination with transistors offer a way to extend the performance of existing technologies by increasing circuit speed and decreasing static power dissipation. We have investigated Si-based tunnel diodes grown using molecular beam

First Steps Towards Small Arrays of Mo/Au Microcalorimeters

December 1, 2000
Author(s)
J. Olsen, E. C. Kirk, K. Thomsen, B. van den Brandt, Ph. Lerch, L. Scandella, A. Zehnder, S. Mango, H. R. Ott, Martin Huber, Gene C. Hilton, John M. Martinis
We are developing small arrays of microcalorimeters based on transition edge sensors made with Mo/Au bilayers deposited on silicon nitride membranes and Au absorbers. The superconducting transition of the bilayers is adjusted to be around 130 mK with a
Displaying 46851 - 46875 of 73697
Was this page helpful?