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NIST Authors in Bold

Displaying 29101 - 29125 of 74186

Pulse shaping for background free broadband CARS

March 16, 2009
Author(s)
Young Jong Lee, Marcus T. Cicerone
We demonstrate that pulse shaping of a probe pulse can suppress the nonresonant background (NRB) contribution and retrieve resonant Raman signal efficiently in broadband coherent anti-Stokes Raman scattering (CARS) spectrum. A pulse shaper prepares a probe

Singularity in the Debye-Waller factor of graphene

March 16, 2009
Author(s)
Vinod K. Tewary, B. Yang
It is shown that the Debye-Waller factor for graphene has a singularity. However, the singularity does not affect the zero-temperature value of the Debye-Waller factor. We calculate the zero-temperature limit of the mean-square displacement separately for

Small Angle X-Ray Scattering Measurements of Spatial Dependent Linewidth in Dense Nanoline Gratings

March 16, 2009
Author(s)
Chengqing C. Wang, Wei-En Fu, Bin Li, Huai Huang, Christopher Soles, Eric K. Lin, Wen-Li Wu, Paul S. Ho, Michael W. Cresswell
Small angle X-ray scattering (SAXS) was used to characterize the line cross section of nanoline gratings fabricated using electron beam lithography (EBL) patterning followed by anisotropic wet etching into silicon single crystal. SAXS results at normal

EUVL dosimetry at NIST

March 13, 2009
Author(s)
Charles S. Tarrio, Steven E. Grantham, Marc J. Cangemi, Robert E. Vest, Thomas B. Lucatorto, Noreen Harned
As part of its role in providing radiometric standards in support of industry, NIST has been active in advancing extreme ultraviolet dosimetry on various fronts. Recently, we undertook a major effort in accurately measuring the sensitivity of three extreme

Polymerization Stress Development in Dental Composites: Effect of Cavity Design Factor

March 13, 2009
Author(s)
Joseph M. Antonucci, Anthony A. Giuseppetti, Justin N. O'Donnell, Gary E. Schumacher, Drago Skrtic
Objective: To assess the effect of the cavity design factor (C-factor) on polymerization stress development (PSD) in resin composites. Methods: An experimental resin (BT resin) was prepared, which contained 2,2-bis[p-(2 hydroxy-3 -methacryloxypropoxy

Structural Changes behind the Diffuse Dielectric Response in AgNbO3

March 13, 2009
Author(s)
Igor Levin, Victor L. Krayzman, Joseph C. Woicik, J. Karapetrova, T. Proffen, M. G. Tucker, I. M. Reaney
Structural changes among the so-called M-polymorphs of AgNbO3 were analyzed using combined high-resolution X-ray diffraction, neutron total scattering, electron diffraction, and X-ray absorption fine structure measurements. These polymorphs crystallize

Adhesion Research at the National Institute of Standard and Technology (NIST)

March 11, 2009
Author(s)
Donald L. Hunston, Christopher M. Stafford
Over the years, NIST has been very active in adhesion research. Although there has never been an organizational group or large-scale program that focused specifically on this topic, a wide variety of projects have had adhesion, or related properties, as a

Effect of Strain on the Modulus of Sealants Exposed to the Outdoors

March 11, 2009
Author(s)
Christopher C. White, Donald L. Hunston, Kar T. Tan
The effects of applied strain on sealants exposed to outdoor weathering were examined for two sealant formulations, sealants A and C. Both static and dynamic strain was applied to the sealants during the summer in a Gaithersburg, MD-outdoor location. Both

Cell volume distributions reveal cell growth rates and division times

March 7, 2009
Author(s)
Michael W. Halter, John T. Elliott, Joseph B. Hubbard, Alessandro Tona, Anne L. Plant
A population of cells in culture displays a range of phenotypic responses, even when those cells are derived from a single cell and are exposed to a homogeneous environment. Phenotypic variability can have a number of sources, including the variable rates
Displaying 29101 - 29125 of 74186
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