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You searched on: Topic Area: Physics

Displaying records 11 to 20 of 318 records.
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11. Corrections for the Combined Effects of Decay and Dead Time in Live-Timed Counting of Short-Lived Radionuclides
Topic: Physics
Published: 12/5/2015
Author: Ryan P Fitzgerald
Abstract: Studies and calibrations of short-lived radionuclides, for example 15O, are of particular interest in nuclear medicine. Yet counting experiments on such species are vulnerable to an error due to the combined effect of decay and dead time. Separat ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=918525

12. Adapting the Poisson-Influenced K-Means Algorithm for a Larger User Base
Topic: Physics
Published: 11/19/2015
Authors: Brian P. Morris, Zachary H Levine
Abstract: A superconducting transition edge sensor (TES) can be a useful tool for counting the number of photons in a highly attenuated pulse of light, but it requires calibration for its outputs to be interpretable as photon numbers. The Poisson-Influenced K- ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=919772

13. Radiative damping in wave guide based FMR measured via analysis of perpendicular standing spin waves in sputtered Permalloy films
Topic: Physics
Published: 11/17/2015
Authors: Thomas J Silva, Justin M Shaw, Hans Toya Nembach, Mathias Weiler, Martin Schoen
Abstract: The damping α of the spinwave resonances in 75 nm, 120 nm, and 200 nm -thick Permalloy films is measured via vector-network- analyzer ferromagnetic-resonance (VNA-FMR). Inductive coupling between the sample and the waveguide leads to an addi ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=919208

14. Gold Nanoparticle Quantitation by Whole Cell Tomography
Topic: Physics
Published: 11/13/2015
Authors: Aric Warner Sanders, Kavita M Jeerage, Cindi Schwartz, Alexandra E Curtin, Ann Chiaramonti Chiaramonti Debay
Abstract: Many proposed biomedical applications for engineered gold nanoparticles require their incorporation by mammalian cells in specific numbers and locations. Here, the number of gold nanoparticles inside of individual mammalian stem cells was character ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=918316

15. Solar cell characterization
Topic: Physics
Published: 10/23/2015
Authors: Behrang H Hamadani, Brian P Dougherty
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=915586

16. Quantitative Measurement of Resolution as a Function of Defocus in Different Microscopy Modalities Using a Simplified Technique
Topic: Physics
Published: 9/23/2015
Authors: Aric Warner Sanders, Alexandra E Curtin, Ryan Skinner
Abstract: The distance over which the resolution of a microscope image changes appreciably, related to the depth of field, is an important parameter. This value determines the height of an object that can be imaged and said to be ,in focusŠ. Although this dist ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=917950

17. When does a branched polymer becomes a particle?
Topic: Physics
Published: 9/17/2015
Authors: Alexandros Chremos, Jack F Douglas
Abstract: Melts with topologically distinct molecular structures are investigated by molecular dynamics simulation. We determine the mean polymer size and shape, and glass transition temperature for each molecular topology. Both in terms of structure and dynam ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=918746

18. Report for Dedicated JPSS VIIRS Ocean Color Calibration/Validation Cruise
Topic: Physics
Published: 9/10/2015
Authors: Bettye C Johnson, Michael Ondrusek, Eric Stengel, Veronica P. Lance, Menghua Wang, Kenneth Voss, Giuseppe Zibordi, Marco Talone, Zhongping Lee, Jianwei Wei, Junfang Lin, Chuanmin Hu, David English, Charles Kovach, Jennifer Cannizzaro, Alex Gilerson, Sam Ahmed, Amir Ibrahim, Ahmed El-Habashi, Robert Foster, Robert Arnone, Ryan Vandermeulen, Sherwin Ladner, Wesley Goode, Joaquim I Goes, Helga de Rosario Gomes, Kali McKee, Scott Freeman, Aimee Neeley
Abstract: The purpose of this cruise aboard the NOAA Ship Nancy Foster was to collect in situ optical and ancillary data for validation of JPSS VIIRS satellite ocean color radiometry and derived products [Wang et al., 2013; Wang et al., 2014]. The project inte ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=918832

19. Parametric force analysis for measurement of arbitrary optical forces on particles trapped in air or vacuum
Topic: Physics
Published: 9/8/2015
Authors: Haesung Park, Thomas W LeBrun
Abstract: We demonstrate a new method to measure general optical forces on particles trapped in gaseous or vacuum environments during the ring down of a trapped particle following electrostatic excitation. The method is not limited to the common constraint ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=918522

20. Linear relation between Heisenberg exchange and interfacial Dzyaloshinskii‹Moriya interaction in metal films
Topic: Physics
Published: 8/3/2015
Authors: Hans Toya Nembach, Justin M Shaw, Mathias A. Weiler, Emilie Marie Jue, Thomas J Silva
Abstract: Proposals for novel spin-orbitronic logic and memory devices are often dependent on assumptions as to how materials with large spin-orbit and ferromagnets interact when in contact. Such interactions give rise to a host of novel phenomena, such as ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=917482



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