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 48151 - 48175 of 74219

Controller Driven VRML Animation of a Real-Time Inspection System

June 1, 2000
Author(s)
Keith A. Stouffer, John A. Horst
Virtual objects in a web-based environment can be interfaced to and controlled by external real world controllers. A Virtual Reality Modeling Language (VRML) inspection cell was created that models a realtime inspection system The inspection system

Convective and Morphological Instabilities During Crystal Growth

June 1, 2000
Author(s)
Sam R. Coriell, Geoffrey B. McFadden, B T. Murray
We have studied the effects of interface morphology on the dynamics of dendritic growth. The Ivantsov solution for an isothermal paraboloid of revolution growing into a pure, supercooled melt provides a relation between the bulk supercooling and a

Coplanar-Waveguide-to-Microstrip Transition Model

June 1, 2000
Author(s)
Wojciech Wiatr, Dave K. Walker, Dylan Williams
We develop a novel four-port equivalent circuit for a coplanar-waveguide-to-microstrip transition using a finite-difference time-domain analysis. The lumped model accounts for mutual inductive coupling and works well up to about 30 GHz.

Correlation of the optical gap of (Ba,Sr)yTiO 2+y thin films with film composition

June 1, 2000
Author(s)
L D. Rotter, Mark D. Vaudin, John E. Bonevich, Debra L. Kaiser, S 0. Park
A series of (Ba 1-x,Sr x)yTiO 2+y films with a wide range of y and x < 0.07 was grown by metalorganic chemical vapor deposition. The composition of the films was determined by wavelength dispersive x-ray spectrometry. Transmission spectra were measured and

Critical Issues in the Characterization of Polymers for Medical Applications

June 1, 2000
Author(s)
Walter G. McDonough, Eric J. Amis, J Kohn
On June 14, 2000, the New Jersey Center for Biomaterials and the Polymers Division of the National Institute of Standards and Technology (NIST) co-sponsored a one-day workshop on Critical Issues in the Characterization of Polymers for Medical Applications

Evolution and Multidisciplinary Frontiers of C-14 Aerosol Science

June 1, 2000
Author(s)
Lloyd A. Currie
A review is given of some critical events in the development of radiocarbon aerosol science, and the profound influence of radiocarbon accelerator mass spectrometry (AMS) on its current applications and future prospects. The birth of this discipline

Extended Frequency Range Dielectric Measurements of Thin Films

June 1, 2000
Author(s)
F I. Mopsik
A method is described to measure the dielectric constant and loss of thin films. It employs a sample holder based on precision 50 {ohm} air line and can be used from audio frequencies to 1 GHz with a single sample. It is shown to maximize the precision
Displaying 48151 - 48175 of 74219
Was this page helpful?