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Displaying 47676 - 47700 of 143784

Engineering Time-Reversal Invariant Topological Insulators With Ultra-Cold Atoms

December 16, 2010
Author(s)
Ian B. Spielman, Nathan Goldman, Indubala I. Satija, Predrag Nikolic, Alejandro Bermudez, Miguel A. Martin-Delgado, Maciej Lewenstein
Topological insulators are a broad class of unconventional states that respect all symmetries of the system, but have non-trivial transport and topological properties which cannot be defined locally. Until recently, all known realizations of these phases

Measurement of Nanoparticle Concentration Using Quartz Crystal Microgravimetry

December 16, 2010
Author(s)
Vytautas Reipa, Geoffrey Purdum, Jonghoon Choi
A common issue, encountered in nanoparticle-biological system interaction studies is accurate nanoparticle concentration expression, given the critical importance of the dose-response relationships. We present here the application of quartz crystal

3D Imaging Systems for Manufacturing, Construction, and Mobility (NIST TN 1682)

December 15, 2010
Author(s)
Geraldine S. Cheok, Maris Juberts, Marek Franaszek
The National Defense Center of Excellence for Industrial Metrology and 3D Imaging (COE-IM3DI) is conducting research to enable the next generation of manufacturing-centric human/instrument/machine interaction. The generalized goal of the COE-IM3DI research

Predicting Segmentation Accuracy for Biological Cell Images

December 15, 2010
Author(s)
Adele P. Peskin, Alden A. Dima, Joe Chalfoun, John T. Elliott
We have performed segmentation procedures on a large number of images from two mammalian cell lines that were seeded at low density, in order to study trends in the segmentation results and make predictions about cellular features that affect segmentation

Tapering Control of Si Nanowires Grown from SiCl4 at Reduced Pressure

December 15, 2010
Author(s)
Sergiy Krylyuk, Albert Davydov, Igor Levin
Device applications of tapered Si nanowire (SiNW) arrays require reliable technological approaches for fabricating nanowires with controlled shape and orientation. In this study, we systematically explore effects of growth conditions on tapering of Si

Polarized neutron beam properties for measuring parity-violating spin rotation in liquid He4

December 14, 2010
Author(s)
A M. Micherdzinska, C. D. Bass, T. D. Bass, K. F. Gan, D Lou, D M. Markoff, Hans Pieter Mumm, Jeffrey S. Nico, A. K. Opper, E I. Sharapov, M Snow, H E. Swanson, V Zhumabekova
Measurements of parity-violating neutron spin rotation can provide insight into the poorly nderstood nucleon-nucleon weak interaction. Because the expected rotation angle per unit length is small (10−7 rad/m), several properties of the polarized cold

Zone-Refinement Effect in Small Molecule-Polymer Blend Semiconductors for Organic Thin Film Transistors

December 14, 2010
Author(s)
Yeon Sook Chung, Nayool Shin, Jihoon Kang, Youngeun Jo, Vivek Prabhu, Regis J. Kline, John E. Anthony, Do Y. Yoon
The blend films of small molecule semiconductors with insulating polymers exhibit not only an excellent solution processability, but also superior performance characteristics (field-effect mobility, on/off ratio, threshold voltage and stability) over those

Free and Open Source Software

December 13, 2010
Author(s)
Keith Miller, Jeff Voas, Tom Costello
In this paper, free and open source software are discussed. Open source is an intellectual property destroyer. Nothing could be worse than this for the software business and the intellectual-property business. Microsoft has an official open source presence
Displaying 47676 - 47700 of 143784
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