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 43626 - 43650 of 73778

Transient Heating Study of Microhotplates by Using a High-Speed Thermal Imaging System

March 1, 2002
Author(s)
Muhammad Afridi, David W. Berning, Allen R. Hefner Jr., John S. Suehle, Mona E. Zaghloul, Eric Kelley, Zharadeen R. Parrilla, Colleen E. Hood
A high-speed thermal imaging system is used to investigate the dynamic thermal behavior of MEMS-based (MicroElectroMechanical Systems) microhotplate devices. These devices are suspended microstructures fabricated in CMOS technology and are used in various

DNA Hydrogel Plugs Immobilized in Microfluidic Channels with Improved Stability

February 28, 2002
Author(s)
Rebecca A. Zangmeister, K G. Olsen, David J. Ross, Michael J. Tarlov
It has been previously demonstrated that DNA, modified on the 5' end with an acrylic acid group, can be incorporated into a polyacrylamide hydrogel matrix. These types of DNA containing gels have recently been immobilized in plastic microfluidic channels

IT Security for Industrial Control Systems

February 28, 2002
Author(s)
Joseph Falco, Frederick M. Proctor, Keith A. Stouffer, Albert J. Wavering
The National Institute of Standards and Technology (NIST) is working to improve the IT security of networked digital control systems used in industrial applications. This effort is being carried out through the Process Control Security Requirements Forum

Phase Field Modeling of Elastic Domain Structures in Constrained Layers

February 28, 2002
Author(s)
Julia Slutsker
The formation and evolution of polydomain microstructure under external stress in the constrained layer are investigated by phase-field simulation and analytically using homogeneous approximation. As a result of simulation it has been shown that the three

Risk Management Guidance for Information Technology Systems

February 26, 2002
Author(s)
Joan Hash
Risk Management is the process of identifying risk, assessing risk, and taking steps to reduce risk to an acceptable level. Organizations use risk assessment, the first step in the risk management methodology, to determine the extent of the potential

Observation of Latent Reliability Degradation in Ultra-Thin Oxides after Heavy-Ion Irradiation

February 18, 2002
Author(s)
John S. Suehle, Bin Wang, J. F. Conley, Eric M. Vogel, Peter Roitman, C E. Weintraub, A. H. Johnston, J B. Bernstein
Constant voltage breakdown distributions of Time-Dependent-Dielectric-Breakdown (TDDB) were obtained for both non-irradiated and irradiated 3.0 and 3.2 nm thick SiO 2 films subjected to 60Co gamma irradiation and heavy ions of 823 MeV 129 Xe (Linear Energy

Random Packings of Frictionless Particles

February 18, 2002
Author(s)
C S. O'Hern, Stephen A. Langer, A J. Liu, S R. Nagel
We study random packings of frictionless particles at T=0. The packing fraction where the pressure becomes nonzero is the same as the jamming threshold, where the static shear modulus becomes nonzero. The distribution of threshold packing fractions narrows

Surface Characterization of Laser- Ablated Polymers Used for Microfluidics

February 15, 2002
Author(s)
D L. Pugmire, E A. Waddell, R Haasch, Michael J. Tarlov, Laurie E. Locascio
Fabrication of microfluidic devices by excimer laser ablation under different atmospheres may provide variations in polymer microchannel surface characteristics. The surface chemistry and electroosmotic (EO) mobility of polymer microchannels laser ablated

Handbook of Reference Data for Nondestructive Testing: Ultrasonics Chapter

February 14, 2002
Author(s)
John A. Slotwinski
The ASTM Handbook of Reference Data for Nondestructive Testing (NDT) is a collection of previously available NDT data for use by NDT practitioners. It is intended to be a ready reference guide, and will include chapters on several of the different NDT

Powder Standard Reference Materials

February 13, 2002
Author(s)
James F. Kelly
The measurement of particle size distributions has become increasingly important for the testing and certification of equipment used in size analysis. Requirements for quality control compliance with the ISO 9000 series of quality standards have emphasized

Total-Energy-Based Structure Prediction for Decagonal Al-Ni-Co

February 11, 2002
Author(s)
M Mihalkovic, I Al-Lehyani, Eric J. Cockayne, C L. Henley, N Moghadam, J A. Moriarty, Yijun Wang, M Widom
Quasicrystals are metal alloys whose noncrystallographic symmetry and lack of structural periodicity challenge methods of both experimental structure determination and theoretical structural prediction. Here we employ total energy calculations and Monte

Development of a Minimal IEEE 1451.1 Model for Microcontroller Implementation

February 7, 2002
Author(s)
A Stepanenko, Kang B. Lee, R Kochan, V Kochan, A Sachenko
The IEEE 1451.1 standard was studied and analyzed for resources needed for a minimal implementation of the standard. As a result, a Minimal IEEE 1451.1 Model optimized for the 8051 series of microcontrollers is proposed. In addition, a Minimal IEEE 1451.1

Improved Thermal Stability Of Crown Ether And Imidazolium Treatments for Flame Retardant Polymer Layered-Silicate Nanocomposites

February 6, 2002
Author(s)
Jeffrey W. Gilman, Cher H. Davis, Rick D. Davis, W H. Awad, A B. Morgan, Paul C. Trulove, Hugh C. De Long, T E. Sutto, L J. Mathias, D Schiraldi
The thermal stability of the organic treatment present on a layered silicate is of utmost importance in preparing a polymer-layered silicate (clay) nanocomposite by melt processing methods. Specifically, the organic treatment must not decompose at

A Functional Basis for Engineering Design: Reconciling and Evolving Previous Efforts

February 1, 2002
Author(s)
Kristen L. Wood, RJ B. Stone, DRJ Mcadams, J Hirtz, Simon Szykman
In engineering design, all products and artifacts have some intended reason behind their existence: the product or artifact function. Functional modeling provides an abstract, yet direct, method for understanding and representing an overall product or

Analysis of Electrically-Short Dipoles with a Nonlinear Load, Revisited

February 1, 2002
Author(s)
John M. Ladbury, Dennis G. Camell
We reexamine the characteristics of electrically short dipoles with nonlinear loads and, specifically, the early work of Motohisa Kanda. Although this problem has been examined in great detail in the past, some errors have not been addressed. We describe

Applications of Computational Thermodynamics

February 1, 2002
Author(s)
J Agren, F H. Hayes, LFJ H. Hoglund, Ursula R. Kattner, B Legendre, R Schmid-fetzer
The major tools used in applying computational thermodynamics to various problems in materials science are briefly presented and several practical examples are given as illustrations. Solutions to industrial problems pertaining to the processing of and
Displaying 43626 - 43650 of 73778
Was this page helpful?