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NIST Authors in Bold

Displaying 21651 - 21675 of 73697

The Exothermic Reaction of Fire Suppressants

March 13, 2013
Author(s)
Gregory T. Linteris, Valeri I. Babushok, Fumiaki Takahashi, Viswanath R. Katta, Oliver Meier
Several fire suppressants are under consideration to replace CF3Br for use in suppressing fires in aircraft cargo bays. In Federal Aviation Administration performance tests simulating the explosion of an aerosol can, however, the replacements HFC-125, 2-

Experimental Evidence for s-Wave Pairing Symmetry in Superconducting Cu_x}Bi_2}Se_3} Single Crystals Using a Scanning Tunneling Microscope

March 12, 2013
Author(s)
Niv Levy, Tong Zhang, Jeonghoon Ha, Fred Sharifi, Alec Talin, Young Kuk, Joseph A. Stroscio
Topological superconductors (TS) are a newly predicted phase of matter which is topologically distinct from conventional superconducting condensates of Cooper pairs. As a manifestation of its topological character, TS supports massless itinerant quasi

Scanning Tunneling Microscopy of Gate Tunable Topological Insulator Bi2Se3 Thin Films

March 12, 2013
Author(s)
Tong Zhang, Niv Levy, Jeonghoon Ha, Young Kuk, Joseph A. Stroscio
Electrical field control of the carrier density of topological insulators (TI) has greatly expanded the possible practical use of these materials. However, the combination of low temperature local probe studies and a gate tunable TI device remains

The Art in Science of microTAS (Editorial)

March 12, 2013
Author(s)
Michael Gaitan
The discovery of a natural phenomenon unveils a curtain of ignorance from what has always existed. However, the creation of art requires the use of materials and knowledge combined with artistic inspiration to create a work of aesthetic appeal. By this

Where is the required lattice match in horizontal growth of nanowires?

March 12, 2013
Author(s)
Babak Nikoobakht
The surface-directed growth of nanowires (NWs) has been demonstrated for a number of semiconductors and is anticipated to be applicable to a wider group of materials. However, the epitaxial relationship between NWs and their underlying surface has not been

Highly efficient heralding of entangled single photons

March 11, 2013
Author(s)
Sven Ramelow, Alexandra Mech, Marissa Giustina, Simon Groeblacher, Witlef Wieczorek, Adriana Lita, Brice R. Calkins, Thomas Gerrits, Sae Woo Nam, Anton Zeilinger, Rupert Ursin
Single photons are an important prerequisite for a broad spectrum of quantum optical applications. We experimentally demonstrate a heralded single-photon source based on spontaneous parametric down- conversion in collinear bulk optics, and fiber-coupled

Exploiting shot noise correlations in the photodetection of ultrashort optical pulse trains

March 10, 2013
Author(s)
Franklyn J. Quinlan, Tara M. Fortier, Haifeng (. Jiang, Archita Hati, Craig W. Nelson, Yang Fu, J. C. Campbell, Scott A. Diddams
Photocurrent shot noise represents the fundamental quantum limit of amplitude, phase and timing measurements of optical signals. It is generally assumed that non-classical states of light must be employed to alter the standard, time-invariant shot noise

Hyperspectral Image Segmentation of the Common Bile Duct

March 8, 2013
Author(s)
Daniel V. Samarov, Eleanor Wehner, Roderich E. Schwarz, Karel Zuzak, Edward Livingston, Maritoni A. Litorja
Over the course of the last several years hyperspectral imaging (HSI) has seen increased usage in biomedicine. Within the medical field in particular HSI has been recognized as having the potential to make an immediate impact by reducing the risks and

Spectral Light source Distribution variations to enhance discrimination of the common bile duct from surroundings in reflectance hyperspectral imaging

March 8, 2013
Author(s)
Maritoni A. Litorja, Mira Fein, Eleanor Wehner, Karel Zuzak, Edward Livingston
The classification of anatomical features using hyperspectral imaging has been a common goal in biomedical hyperspectral imaging. Identification and location of the common bile duct is critical in cholecystectomies, one of the most common surgical

Accurate, inexpensive testing of handheld lasers for safe use and operation

March 7, 2013
Author(s)
Marla L. Dowell, Joshua A. Hadler
An accurate, inexpensive test bed for measurements of optical power emitted from handheld lasers is described. Our test bed consists of a thermopile detector, bandpass optical filters, an adjustable iris, and self-centering holders for mounting of the

Direct Imaging of Topological Edges States with Cold Atoms

March 7, 2013
Author(s)
Ian B. Spielman, Nathan Goldman, Jean Dalibard, Alexandre Dauphin, Maciej Lewenstein, Fabrice Gerbier, Peter Zoller
Detecting manifestation of topological order in cold-atom experiments is an outstanding challenge, the resolution of which offers novel perspectives on topological phases of matter. In material systems, unambiguous signatures of topological states have

Energy levels and spectral lines of singly ionized manganese (Mn II)

March 7, 2013
Author(s)
Alexander Kramida, Jean E. Sansonetti
This compilation revises the previously recommended list of energy levels of singly ionized manganese (Mn II) and provides a comprehensive list of observed spectral lines and transition probabilities in this spectrum. The new level optimization takes into

Light polarization and quantum interference effects in unresolvable atomic lines: application to a precise measurement of the 6,7Li D2 lines.

March 7, 2013
Author(s)
Roger C. Brown, Saijun Wu, James V. Porto, Craig J. Sansonetti, Clayton Simien, Samuel M. Brewer, Joseph N. Tan, John D. Gillaspy
We characterize the effect of quantum interference of light scattering on the line shapes and measured line positions in atomic spectra. These effects occur when the excited state splittings are of order the excited state line widths, and represent an

Shifts of optical frequency references based on spectral hole burning in Eu3+:Y2SiO5

March 6, 2013
Author(s)
David R. Leibrandt, Michael J. Thorpe, Till P. Rosenband
Spectral hole burning laser frequency stabilization in Eu3+:Y2SiO5 is performed in a cryogenic environment with high temperature stability and low levels of vibration. Several properties of Eu3+:Y2SiO5 spectral holes are measured, including magnetic field
Displaying 21651 - 21675 of 73697
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