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Displaying records 61 to 70 of 217 records.
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61. Uncertainty analysis for a high-spatial resolution single-mode fiber-optic distributed temperature sensor
Topic: Physics
Published: 11/17/2011
Authors: Shellee Dawn Dyer, Michael Tanner, Burm Baek, Robert Hadfield, Sae Woo Nam
Abstract: We demonstrate a high-accuracy distributed fiber optic temperature sensor using superconducting nanowire single-photon detectors and single photon counting techniques. Our demonstration uses inexpensive single-mode fiber at standard telecommunication ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=910008

62. Generation and characterization of high-purity, pulsed squeezed light at telecom wavelengths from pp-KTP
Topic: Physics
Published: 11/15/2011
Authors: Thomas Gerrits, Martin J Stevens, Burm Baek, Brice R. Calkins, Adriana Eleni Lita, Scott C Glancy, Emanuel H Knill, Sae Woo Nam, Richard P Mirin, Robert Hadfield, Ryan Bennink, Warren Grice, Sander N. Dorenbos, Tony Zijlstra, Teun Klapwijk, Val Zwiller
Abstract: We characterize a pp-KTP crystal designed to produce pure single mode squeezed vacuum at 1570 nm. Measurements show a raw (corrected) Hong-Ou-Mandel interference with 86 % (90 %) visibility and a circular joint spectral probability distribution with ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=908774

63. Carbon nanotube arrays for absolute IR and THz radiometry
Topic: Physics
Published: 10/2/2011
Authors: John H Lehman, Kerry N. Betz, Erich N Grossman
Abstract: We have assembled and evaluated a novel electrically calibrated thermopile having an array of 1.5 mm long multiwalled carbon nanotubes as the radiation absorber. We find very low reflectance at the 390 {mu}m laser wavelength and excellent agreeme ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=908949

64. SEM Induced Shrinking of Solid State Nanopores for Single Molecule Detection
Topic: Physics
Published: 9/22/2011
Authors: Anmiv Prahbu, Kevin J Freedman, Joseph William Robertson, Zhorro Nikolov, John J Kasianowicz, MinJun Kim
Abstract: We have investigated the shrinkage of solid state nanopores by a scanning electron microscope and find the process to be reproducible and dependant beam parameters such as the accelerating voltage and electron flux. The shrinking phenomenon does ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=907430

65. State Discriminiation Signal Nulling Receivers
Topic: Physics
Published: 9/6/2011
Authors: Francisco E. Becerra Chavez, Jingyun Fan, Gerald Baumgartner, Sergey V Polyakov, Julius Goldhar, Jonathan Kosloski, Alan L Migdall
Abstract: Optimized state-discrimination receiver strategies for nonorthogonal states can improve the capacity of the communication channels operating with error rates below the ones corresponding to conventional receivers. Coherent signal-nulling receivers us ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=909465

66. SURF III: A flexible Synchrotron Radiation Source for Radiometry and Research
Topic: Physics
Published: 9/1/2011
Authors: Uwe Arp, Charles W Clark, Lu Deng, Nadir S. Faradzhev, Alex P. Farrell, Mitchell L. Furst, Steven E Grantham, Edward W Hagley, Shannon Bradley Hill, Thomas B Lucatorto, Ping-Shine Shaw, Charles S Tarrio, Robert Edward Vest
Abstract: The calculability of synchrotron radiation (SR) makes electron storage rings wonderful light sources for radiometry. The broadband nature of SR allows coverage of the whole spectral region from the x-ray to the far-infrared. Compact low-energy storag ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=906750

67. Perpendicular ferromagnetic resonance measurements of damping and Landé g-factor in sputtered (Co^d2^Mn)^d1-x^Ge^dx^ thin films
Topic: Physics
Published: 8/8/2011
Authors: Thomas J Silva, Hans Toya Nembach, Justin M Shaw, Michael Schneider, Matt Carey, Stefan Maat, Jeff Childress
Abstract: X-ray diffraction (XRD), magnetometry, and ferromagnetic resonance (FMR) measurements were performed on sputtered thin films of the nominal Heusler alloy (Co^d2^Mn)^d1-x^Ge^dx^ with varying Ge content and annealing temperature. XRD indicates some deg ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=906314

68. A circular dielectric grating for vertical extraction of single quantum dot emission
Topic: Physics
Published: 7/25/2011
Authors: Marcelo Ishihara Davanco, Matthew T. Rakher, Dieter Schuh, Antonio Badolato, Kartik A Srinivasan
Abstract: We demonstrate a suspended circular grating composed of partially etched annular trenches in a thin GaAs membrane, designed for e±cient and moderately broadband ( approx. 5 nm) extraction of emission from single InAs quantum dots. Simulations indic ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=908236

69. Increased responsivity pyroelectric radiometer with dome input and temperature control
Topic: Physics
Published: 7/18/2011
Authors: George P Eppeldauer, Jinan Zeng, Leonard M Hanssen
Abstract: Pyroelectric radiometers with noise-equivalent-power (NEP) close to 1 nW/Hz¿ have been developed to measure less than 1 microwatt radiant power levels at room temperature to 25 micrometer. The radiometers will be used as transfer standards for routin ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=908993

70. Dimensional Analysis of Through Silicon Vias Using the TSOM Method
Topic: Physics
Published: 7/12/2011
Authors: Ravikiran Attota, Andrew Rudack
Abstract: There is a great need for accurate, truly-3D metrology solutions that can be used for analysis of high aspect ratio features such as through-silicon-vias (TSVs). Through-focus scanning optical microscopy (TSOM) is an optical metrology method that pr ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=909226



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