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Displaying 3101 - 3125 of 4212

Reliability of Lead-Free Solders

December 1, 2001
Author(s)
C A. Handwerker, D Noctor, G Whitten
… consumer electronics, environmentally conscious manufacturing, lead-free solder, microelectronic assemblies, …

Next-Generation Chip-Scale Atomic Clocks

October 16, 2023
Author(s)
John Kitching, Matthew Hummon, William McGehee, Ying-Ju Wang, Susan Schima
We describe work toward the development of next-generation chip-scale atomic clocks, which combine small size, low power consumption and manufacturability with high frequency stability. The use of optical transitions in microfabricated vapor cells improves

Smart Home Device Loss of Support: Consumer Perspectives and Preferences

July 23, 2023
Author(s)
Julie Haney, Susanne M. Furman
Unsupported smart home devices can pose serious safety and security issues for consumers. However, unpatched and vulnerable devices may remain connected because consumers may not be alerted that their devices are no longer supported or do not understand

A Reference Modulated Scatterer for ISO18000-6 UHF Tag Testing

November 15, 2012
Author(s)
David R. Novotny, Daniel G. Kuester, Jeffrey R. Guerrieri
We present a method for measuring Ultra-High Frequency Radio-Frequency Identification (UHF RFID) tag differential RCS that has the potential for being easier and more accurate than current and proposed methods [1-2]. This method is based on accurately

Calibration of Laminar Flow Meters for Process Gases

June 1, 2012
Author(s)
John D. Wright, Thiago Cobu, Robert F. Berg, Michael R. Moldover
We calibrated three models of commercially-manufactured, laminar flow meters (LFMs) at four pressures (100 kPa, 200 kPa, 300 kPa, and 400 kPa) with five gases (N2, Ar, He, CO2, and SF6) over a 10:1 flow range using NIST’s primary flow standards as

A New Electronic Verification Method for Vector Network Analyzers

June 13, 2010
Author(s)
Ronald A. Ginley, Dylan F. Williams, Denis X. LeGolvan
The National Institute of Standards and Technology (NIST) has recently introduced a new method for the verification of Vector Network Analyzers (VNAs). The technique is based on the new electronic calibration units that are available from several

An Automated Ionization Chamber for Secondary Radioactivity Standards

December 8, 2009
Author(s)
Ryan P. Fitzgerald
We report on the operation and characterization of a new ionization chamber system, called AUTOIC, featuring a commerical digital electrometer and a commerical robotic sample changer. The ralative accuracy of the electrometer was improved significantly

Standards Development for Wireless Communications for Urban Search and Rescue Robots

February 26, 2007
Author(s)
Kate Remley, Galen H. Koepke, Elena R. Messina, Adam S. Jacoff, George Hough
To gather data in support of standards development for urban search and rescue robots, NIST is conducting a series of field tests to quantify the functionality and performance of various candidate robots. During these tests, manufacturers bring robots that

Length Dependent Uptake of DNA-Wrapped Single Walled Carbon Nanotubes

January 1, 2007
Author(s)
Matthew Becker, Jeffrey Fagan, Nathan D. Gallant, Barry J. Bauer, Vardhan Bajpai, Erik K. Hobbie, Silvia H. De Paoli Lacerda, Kalman D. Migler, J P. Jakupciak
DNA-wrapped single wall carbon nanotubes (SWNTs) with broad length distributions are shown to reduce the viability of IMR90 primary human lung fibroblast cells above the (23 to 25) ug/mL concentration regime. Furthermore using well-defined length fractions

Characterization of Carbon Nanotube Purity Using a Quartz Sensor Platform

November 28, 2005
Author(s)
Stephanie A. Hooker, Ryan Schilt, Natalia Varaksa, John H. Lehman, Paul Rice
Carbon nanotubes are revolutionary materials, with properties that are vastly different than any other bulk form of carbon. Their unique combination of electrical, mechanical, and thermal properties makes them attractive for applications in advanced
Displaying 3101 - 3125 of 4212
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