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Displaying 45751 - 45775 of 143793

Hydrodynamic Fractionation of Finite Size Nano Gold Clusters

June 15, 2011
Author(s)
De-Hao D. Tsai, Tae Joon Cho, Frank W. DelRio, Julian S. Taurozzi, Michael R. Zachariah, Vincent A. Hackley
We demonstrate a high resolution in situ experimental method for performing simultaneous size-classification and characterization of functional nanoscale gold clusters (NGCs) based on asymmetric-flow field flow fractionation (AFFF). Field emission scanning

Time-resolved photoluminescence of lithographically defined quantum dots fabricated by electron beam lithography and wet chemical etching

June 15, 2011
Author(s)
Varun B. Verma, Martin J. Stevens, Kevin L. Silverman, Neville Dias, Akash Garg, James J. Coleman, Richard P. Mirin
We measure the time-resolved photoluminescence characteristics of a novel type of lithographically patterned quantum dot fabricated by electron beam lithography, wet chemical etching, and overgrowth of the barrier layers by metalorganic chemical vapor

A Combinatorial Approach to Detecting Buffer Overflow Vulnerabilities

June 14, 2011
Author(s)
Raghu N. Kacker, Yu Lei, David R. Kuhn, Wenhua Wang
Buffer overflow vulnerabilities are program defects that can cause a buffer overflow to occur at runtime. Many security attacks exploit buffer overflow vulnerabilities to compromise critical data structures. In this paper, we present a black-box testing

Comparison of segmentation algorithms for fluorescence microscopy images of cells

June 14, 2011
Author(s)
Alden A. Dima, John T. Elliott, James J. Filliben, Michael W. Halter, Adele P. Peskin, Javier Bernal, Marcin Kociolek, Mary C. Brady, Hai C. Tang, Anne L. Plant
Segmentation results from nine different segmentation techniques applied to two different cell lines and five different sets of imaging conditions were compared. Significant variability in the results of segmentation was observed that was due solely to

Indistinguishability of single photons from dissimilar single-photon sources

June 14, 2011
Author(s)
Sergey V. Polyakov, Glenn S. Solomon, Edward B. Flagg, Alan L. Migdall, Andreas Muller
In quantum mechanics, particles in identical states are indistinguishable, giving rise to effects with no classical analog. For instance, the bosonic nature of light insures that upon interference two indistinguishable photons will coalesce into a single

Polarized He-3 cell development and application at NIST

June 14, 2011
Author(s)
Thomas R. Gentile, WangChun Chen, Changbo Fu, Shannon Watson, Gordon L. Jones, J. W. McIver, D. R. Rich
Over a period of well over a decade, a large number and variety of polarized 3He cells for neutron applications have been developed and tested at the U.S. National Institute of Standards and Technology (NIST). These cells have primarily been employed for
Displaying 45751 - 45775 of 143793
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