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Displaying records 1 to 10 of 282 records.
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1. High-contrast and fast electrochromic switching enabled by plasmonics
Topic: Physics
Published: 1/27/2016
Authors: Ting Xu, Erich C. Walter, Amit Kumar Agrawal, Christopher C. Bohn, Jeyavel Velmurugan, Wenqi Zhu, Henri J Lezec, Albert A. Talin
Abstract: With vibrant colours and simple, room-temperature processing methods, electrochromic polymers have attracted attention as active materials for flexible, low-power-consuming devices. However, slow switching speeds in devices realized to date, as well ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=915780

2. Direct observation of Feshbach enhanced s-wave scattering of fermions
Topic: Physics
Published: 12/17/2015
Authors: Dina Genkina, Lauren Moise Aycock, Hsin I Lu, Ian B Spielman, Benjamin K. Stuhl
Abstract: We directly measured the s-wave scattering cross-section of ultracold 40K atoms across the 20.2 mT Feshbach resonance by colliding pairs of degenerate Fermi gases (DFGs) and imaging the scattered atoms. Owing to DFG‰s low density, few atoms scatt ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=919309

3. A strong loophole-free test of local realism
Topic: Physics
Published: 12/16/2015
Authors: Lynden Krister Shalm, Evan Meyer-Scott, B. G. Christensen, Peter LaBonne Bierhorst, Michael Alan Wayne, Deny Hamel, Martin J Stevens, Thomas Gerrits, Scott C Glancy, Michael Shane Allman, Kevin J Coakley, Shellee Dawn Dyer, Adriana E Lita, Varun Boehm Verma, Joshua C Bienfang, Alan L Migdall, Yanbao Zhang, William Farr, Francesco Marsili, Matthew D. Shaw, Jeffrey Stern, Carlos Abellan, Waldimar Amaya, Valerio Pruneri, Thomas Jennewein, Morgan Mitchell, P. G. Kwiat, Richard P Mirin, Emanuel H Knill
Abstract: We present a loophole-free violation of local realism using entangled photon pairs. We ensure that all relevant events in our Bell test are spacelike separated by placing the parties far enough apart and by using fast random number generators and hig ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=919674

4. 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

5. 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 addition ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=919208

6. 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

7. 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

8. 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

9. 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

10. 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 spi ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=917482



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