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Journals

Effects of Defocus and Algorithm on Optical Step Height Calibration

July 1, 1999

Author(s)

Theodore D. Doiron, Theodore V. Vorburger, P Sullivan

Defocus effects on step height measurements by interferometric microscopy are estimated using different algorithms to calculate the step height. The

Committee Reports for the 84th National Conference on Weights and Measures, July 25-29, 1999, Burlington, VT

July 1, 1999

Author(s)

G M. Ugiansky, J L. Land

The 84th Annual Meeting of the National Conference on Weights and Measures will be held in Burlington, VT, July 25-29, 1999. The theme of the conference is

Reduction Potential of the Sulfhydryl Radical. Pulse Radiolysis and Laser Flash Photolysis Studies of the Formation and Reactions of SH and HSSH in Aqueous Solutions

July 1, 1999

Author(s)

T N. Das, Robert E. Huie, Pedatsur Neta, S Padmaja

Formation and reactions of the SH/ S and HSSH /HSS 2- radicals in aqueous solutions have been studied by excimer laser flash photolysis and by pulse radiolysis

p-Terphenyl Sensitized Photoreduction of CO₂ With Cobalt- and Iron-Porphyrins. Interaction Between CO and Reduced Metalloporphyrins

July 1, 1999

Author(s)

T Dhanasekaran, J Grodkowski, Pedatsur Neta, P Hambright, E Fujita

Iron and cobalt porphyrins (FeP and CoP) are utilized as electron-transfer mediators to effect photochemical reduction of CO 2 in homogeneous solutions. The

Switching Characteristics of Spin Valve Devices Designed for MRAM Applications

July 1, 1999

Author(s)

Stephen E. Russek, J O. Oti, Y K. Kim

Magnetic Susceptibility Determination of the Relaxation Time for Domain-Wall Motion in Perpendicularly Magnetized, Ultrathin Films

July 1, 1999

Author(s)

C S. Arnold, David P. Pappas, D Dunlavy, D Venus

Geometry Dependence of Nonlinear Effects in High Temperature Superconducting Transmission Lines at Microwave Frequencies

July 1, 1999

Author(s)

James Booth, James A. Beall, David A. Rudman, Leila R. Vale, Ronald H. Ono

Microscopic Image Analysis of Defect Areas in Optical Disks

July 1, 1999

Author(s)

P L'Hostis, Frederick R. Byers, Fernando L. Podio, Xiao Tang

This paper presents techniques developed in the Information Technology Laboratory of the US National Institute of Standards and Technology (NIST/ITL) for

The NIST WWW High Temperature Superconducting Materials Database (WebHTS Version 2.0)

July 1, 1999

Author(s)

E F. Begley, R G. Munro

The NIST WWW High Temperature Superconducting Materials Database (WebHTS version 2.0) provides evaulated thermal, mechanical, and superconducting property data

A Critical Comparison Between Time and Frequency Domain Relaxation Functions

July 1, 1999

Author(s)

Chad R. Snyder, F I. Mopsik

Considerable work has been performed on providing a theoretical basis for the KohlrauschWilliamsWatts (KWW) and HavriliakNegami(HN) relaxation functions

Polarized Light Scattering Measurements of Dielectric Spheres upon a Silicon Surface

July 1, 1999

Author(s)

Li Piin Sung, George W. Mulholland, Thomas Germer

The polarization of light scattered into directions out of the plane of incidence by polystyrene latex spheres upon a silicon substrate was measured for p

Effects of Mutations of the Active Site Arginine Residues in-4-Oxalocrotonate Tautomerase on the pK_a Values of Active Site Residues and on the pH Dependence of Catalysis

July 1, 1999

Author(s)

R M. Czerwinski, T K. Harris, W H. Johnson, P M. Legler, J T. Stivers, A S. Mildvan, C P. Whitman

The unusually low pK a value of the general base catalyst Pro-1 (pK a = 6.4) in 4-oxalocrotonate tautomerase (4-OT) has been ascribed to both a low dielectric

Effectiveness of AlN Encapsulate in Annealing Ion-Implanted SiC

July 1, 1999

Author(s)

E Handy, M V. Rao, K A. Jones, M A. Derenge, P Chi, R D. Vispute, T Venkatesan, N A. Papanicolaou, J Mittereder

Aluminum nitride (AlN) has been used as an encapsulate for annealing nitrogen (N), arsenic (As), antimony (Sb), aluminum (Al), and boron (B) ion-implanted 6H

Kinetic, Stereochemical, and Structural Effects of Mutations of the Active Site Arginine Residues in 4-Oxalocrotonate Tautomerase

July 1, 1999

Author(s)

T K. Harris, R M. Czerwinski, W H. Johnson, P M. Legler, C Abeygunawardana, M A. Massiah, J T. Stivers, C P. Whitman, A S. Mildvan

Three arginine residues (Arg-11, Arg-39, Arg-61) are found at the active site of 4-oxalocrotonate tautomerase in the X-ray structure of the affinity-labeled

Image Sharpness Measurement in Scanning Electron Microscope - Part III

July 1, 1999

Author(s)

Samuel N. Jones, Robert D. Larrabee, Michael T. Postek, Andras Vladar, Nien F. Zhang

Fully automated or semi-automated scanning electron microscopes (SEM) are now commonly used in semiconductor production and other forms of manufacturing

Voltage Modulation Scanned Probe Oxidation

July 1, 1999

Author(s)

F Perez-murano, K Birkelund, K Morimoto, John A. Dagata

Scanned probe microscope (SPM) oxidation with voltage modulation leads to a significant enhancement of the oxide growth rate, improvement of the aspect ratio of

Frequency-Temperature Compensation in Ti³⁺ and Ti⁴⁺ Doped Sapphire Whispering Gallery Mode Resonators

July 1, 1999

Author(s)

J. G. Harnett, M. E. Tobar, A. G. Mann, E. N. Invanov, Jerzy Krupka, Richard G. Geyer

A new method of compensating the frequency temperature dependence of high-Q monolithic sapphire di-electric resonators near liquid nitrogen temperature is

Field Mapping with the Magnetic Resonance Force Microscope

July 1, 1999

Author(s)

T G. Ruskell, M Lohndorf, John M. Moreland

Studies of Ion Bombardment in High Density Plasmas Containing CF₄

July 1, 1999

Author(s)

James K. Olthoff, Yicheng Wang

We report ion energy distributions, relative ion intensities, and absolute total ion current densities at the grounded electrode of an inductively coupled

Standard Reference Material 2100: Ceramic Fracture Toughness

June 30, 1999

Author(s)

George D. Quinn, R J. Gettings, K Xu

A new Standard Reference Material (SRM) has been prepared for ceramic fracture toughness. It is the first reference material in the world for the property

Superconducting Multiplexer for Arrays of Transition Edge Sensors

June 28, 1999

Author(s)

James A. Chervenak, Kent D. Irwin, Erich N. Grossman, John M. Martinis, Carl D. Reintsema, Martin Huber

We report the design and testing of an analog superconducting time-division multiplexer to instrument large format arrays of low-temperature bolometers and

Shear Induced Polymer Melt Desorption From an Attractive Substrate

June 24, 1999

Author(s)

Eric K. Lin, R Kolb, Wen-Li Wu, Sushil K. Satija

Shear induced adsorption/desorption of a highly entangled polymer melt from an attractive interface was directly observed using neutron reflectometry. The

A Portable Integrating Sphere Source for Radiometric Calibrations From the Visible to the Short-Wave Infrared

June 19, 1999

Author(s)

Steven W. Brown, Bettye C. Johnson

A portable integrating sphere source has been developed by the National Institute of Standards and Technology (NIST) as part of a National Aeronautics and Space

Measurement Services for Optoelectronics at NIST

June 16, 1999

Author(s)

Sally S. Bruce

The National Institute of Standards and Technololgy (NIST) offers a variety of hundreds of measurement services to its customers as a part of it's core mission

Kinetic Characterization of Chiral Biocatalysis of Cycloarenes by the Camphor 5-Monooxygenase Enzyme System

June 15, 1999

Author(s)

D A. Grayson, V L. Vilker

Redox enzyme mediated biocatalysis has the potential to regio - and stereo-specificity oxidive hydrocarbons producing valuable products with minimal by-product

A Comparison of MAC Protocols for Hybrid Fiber/Coax Networks: IEEE 802.14 vs. MCNS

June 7, 1999

Author(s)

Nada T. Golmie, F Mouveaux, David H. Su

The first Medium Access Control (MAC) interface specifications for Hybrid Fiber/Coax networks to be completed are the Data Over Cable Service Interface

The Effects of Cultural Markers on Web Site Use

June 3, 1999

Author(s)

Charles L. Sheppard, Jean C. Scholtz

Our research involves identifying factors that affect the usability of web sites. In particular, given that many web sites are accessed by substantial numbers

Behavior of a Charged Two-Level Fluctuator in Al-AlO_x -Al Single-Electron Transistor

June 1, 1999

Author(s)

M. Kenyon, J. L. Cobb, A. Amar, D. Song, C. J. Lobb, Neil M. Zimmerman, F. C. Wellstood

We have studied the behavior of a charged two-level fluctuator in an Al-AlO x -Al single-electron transistor (SET) in the normal state over a temperature range

Defining Flashover for Fire Hazard Calculations

June 1, 1999

Author(s)

Richard D. Peacock, Paul A. Reneke, Richard W. Bukowski, Vyto Babrauskas

As the use of performance-based methods for evaluating the fire behavior of materials and systems becomes more widespread, objective criteria to judge fire

Method for the Characterization of Size-Exclusion Chromatography Media for Preparative Purification of DNA Restriction Fragments

June 1, 1999

Author(s)

C M. Tellez-Rodriguez, Kenneth D. Cole

A protocol has been developed to characterize the potential of size exclusion chromatography gels for the separation of DNA fragments at a preparative scale. A

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