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Displaying 4726 - 4750 of 13217

Prototype Cantilevers for SI Traceable NanoNewton Force Calibration

September 20, 2006
Author(s)
Richard S. Gates, Jon R. Pratt
… silicon. Nominal spring constants were estimated to be in the range 0.02 N/m to 0.2 N/m. Resonance frequency … Variations of less than 1% (relative standard deviation) in resonance frequency attested to the high degree of … achieved. Independent calibration of cantilevers in the array using an electrostatic force balance indicated …

Prototype Cantilevers for SI-Traceable NanoNewton Force Calibration

September 20, 2006
Author(s)
Richard S. Gates, Jon R. Pratt
… (100) Si. Nominal spring constants were estimated to be in the range of 0.02 N/m to 0.2 N/m. Resonance frequency … portions of a silicon-on-insulator (SOI) wafer and in different processing batches. Variations of less than 1% (relative standard deviation) in resonance frequency attested to the high degree of …

Ionizing Radiation-Induced Destruction of Benzene and Dienes in Aqueous Media

March 28, 2006
Author(s)
M I. Al-Sheikhly, Dianne L. Poster, Jung-Chul An, Pedatsur Neta, Joseph Silverman, Robert E. Huie
… and reactions of radicals from benzene and dienes in aqueous solutions. The benzene OH adduct, C6H6OH, reacts with O2 (k = 3 x 108 L mol-1 s-1) in a reversible reaction. The peroxyl radical, HOC6H6O2 , … pH. The occurrence of the chain reaction is demonstrated in low-dose-rate gamma radiolysis experiments where the …

Reversible axial-strain effect in Y-Ba-Cu-O coated conductors

November 7, 2005
Author(s)
Najib Cheggour, John (Jack) W. Ekin, C. L. H. Thieme, Y Y. Xie, V Selvamanickam, Ron Feenstra
… The recently discovered reversible strain effect in Y-Ba-Cu-O (YBCO) coated conductors contrasts with the … that the effect of strain on critical-current density J c in practical high-temperature superconductors is determined only by crack formation in the ceramic component. Instead of having a constant J c as …

Low-Leakage Superconducting Tunnel Junctions with a Single-Crystal Al2O3 Barrier

September 5, 2005
Author(s)
Seongshik Oh, Katarina Cicak, Kevin Osborn, Raymond Simmonds, David P. Pappas, Robert Mcdermott, Ken B. Cooper, Matthias Steffen, John M. Martinis
… temperature and crystallizing it at a high temperature in oxygen environment, a morphologically intact … Superconductor Science and Technology …

Effect of Magnetic Field Dynamics on Thermocouple Performance

January 3, 2005
Author(s)
F Shir, Lawrence H. Bennett, C Mavriplis
… There are challenges in measuring temperature by thermocouples in a time-dependent magnetic field. Although there is … well as thermocouple type, length of the thermocouple wire in the field, and magnetic field are given with an example of … Instrumentation Science & Technology …

An Informatics Infrastructure for Combinatorial and High-throughput Materials Research Built on Open Source Code

January 1, 2005
Author(s)
Weiping Zhang, Michael J. Fasolka, Alamgir Karim, Eric J. Amis
… Research Informatics Systems (LRIS) hold great promise in streamlining research generally, and are particularly … such as combinatorial and high-throughput approaches. In this paper, we describe a LRIS geared towards combi materials research, which is being established in lab facilities at the NIST Combinatorial Method Center …

Discrete Combinatorial Investigation of Polymer Mixture Phase Boundaries

January 1, 2005
Author(s)
J Cabral, Alamgir Karim
… liquid dispenser system. The sample arrays are placed in a uniform, but continuously varying, temperature field, so … entire process is simple, flexible, inexpensive and rapid. In this demonstration, we investigate two binary mixtures of … Measurement Science & Technology …
Displaying 4726 - 4750 of 13217
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