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Displaying records 31 to 40 of 297 records.
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31. Confronting the Complexity of Commercial Carbon Nanotube Materials
Topic: Physics
Published: 5/13/2015
Authors: Luis Fernando Vargas Lara, Jack F Douglas
Abstract: The morphology of commercially available carbon nanotube materials is often much more complex than the term ,carbon nanotubeŠ (CNT) would imply. Commercial CNT materials are typically composed of roughly spherical CNT domains having a highly rami ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=916178

32. Photon-noise limited sensitivity in titanium nitride kinetic inductance detectors
Topic: Physics
Published: 2/20/2015
Authors: Johannes Hubmayr, James A Beall, Daniel Thomas Becker, Hsiao-Mei Cho, Gene C Hilton, Dale Li, David P Pappas, Jeffrey Lee Van Lanen, Mark Devlin, Kent David Irwin, Chris Groppi, Phillip Mauskopf
Abstract: We demonstrate photon-noise limited performance at sub-millimeter wavelengths in microwave kinetic inductance detectors (MKIDs) made of a new superconducting material, a TiN/Ti/TiN trilayer film. Optical coupling is achieved by use of feedhorns, a st ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=916182

33. Temperature-dependent structure of Tb-doped magnetite nanoparticles
Topic: Physics
Published: 2/13/2015
Authors: Katherine P. Rice, Stephen E Russek, Roy H. Geiss, Justin M Shaw, Robert J. Usselman, Eric Raymond Evarts, Thomas J Silva, Hans Toya Nembach, Elke Arenholz, Yves U. Idzerda
Abstract: High quality 5 nm cubic Tb-doped magnetite nanoparticles have been synthesized by a modified wet-chemical method to investigate tailoring of magnetic properties for imaging and biomedical applications. We show that the Tb is incorporated into the ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=917576

34. Spin Hall Effect and Irreversible Thermodynamics; Center-to-Edge Transverse Current-Induced Voltage
Topic: Physics
Published: 1/5/2015
Author: Wayne Mark Saslow
Abstract: We examine the Dyakonov and Perel theory of the Spin Hall Effect from the viewpoint of irreversible thermodynamics. As thermodynamic driving forces we include the effect of the thermal gradient, the gradient of the electrochemical potential (rather ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=916034

35. Experimental Bounds on Classical Random Field Theories
Topic: Physics
Published: 12/10/2014
Authors: Joffrey Kent Peters, Sergey V Polyakov, Jingyun Fan, Alan L Migdall
Abstract: Alternative theories to quantum mechanics motivate important fundamental tests of our understanding and description of the smallest physical systems. Here we place experimental limits on those classical field theories which result in power-depend ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=917261

36. IR-enhanced Si reference detectors for 1-step scale transfers from 300 nm to 1000 nm
Topic: Physics
Published: 11/20/2014
Authors: George P Eppeldauer, Thomas C Larason, Jeanne M Houston, Robert Edward Vest, Uwe Arp, Howard W Yoon
Abstract: IR-enhanced Si photodiodes have improved radiometric and electronic characteristics as compared to other widely used Si photodiodes and can be used as responsivity standards in the wavelength range from 300 nm to 1000 nm. Their low predicted uncerta ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=916505

37. Ultra-Broadband Frequency Comb Generation in Superconducting Resonators
Topic: Physics
Published: 10/30/2014
Authors: David P Pappas, Michael R Vissers, Martin O. Sandberg, Jiansong Gao, Steven R Jefferts, Robert P Erickson
Abstract: Multi-octave frequency combs are generated in superconducting microresonators due to their low loss, strong Kerrlike kinetic inductance nonlinearity, and low frequency dispersion. This effect is illustrated at low frequency (60 MHz to 20 GHz) in long ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=915796

38. Extended and Revised Analysis of Singly Ionized Tin: Sn II
Topic: Physics
Published: 10/28/2014
Authors: K. Haris, Alexander Kramida, A. Tauheed
Abstract: The electronic structure of singly ionized tin (Sn II) is partly a one-electron and partly a three-electron system with ground configuration 5s25p. The excited configurations are of the type 5s2nℓ in the one-electron part, and 5s5p2, 5p3 and 5s ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=915078

39. Phase-Sensitive Detection of Spin Pumping via the ac Inverse Spin Hall Effect
Topic: Physics
Published: 10/6/2014
Authors: Thomas J Silva, Justin M Shaw, Hans Toya Nembach, Mathias A. Weiler
Abstract: Sources of pure spin currents are a fundamental building block of spintronic devices. In ferromagnet/normal metal heterostructures, spin currents are generated at ferromagnetic resonance. This is known as spin pumping, where spin currents of both ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=915317

40. Cryogenic Design and Performance of an Apparatus for Magnetically Trapping Ultracold Neutrons
Topic: Physics
Published: 10/5/2014
Author: Hans P Mumm
Abstract: The cryogenic design and performance of an apparatus used to magnetically confine ultracold neutrons (UCN) is presented. The apparatus is part of an effort to measure the beta-decay lifetime of the free neutron and is comprised of a high-current su ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=917558



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