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Displaying records 21 to 30 of 231 records.
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21. 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 ...

22. Challenges in SIM to Create a Coordination Program for Time and Frequency
Topic: Physics
Published: 7/26/2010
Authors: J. Mauricio Lopez-Romero, Michael A Lombardi
Abstract: The Sistema Interamericano de Metrologia (SIM), one of the world s five major regional metrology organizations (RMOs) recognized by the Bureau International des Poids et Mesures (BIPM), is comprised of national metrology institutes (NMIs) located in ...

23. Characterization and Calibration of an Optical Time Domain Reflectometer Calibrator
Topic: Physics
Published: 8/23/2006
Authors: Donald R Larson, Nicholas G Paulter Jr., Kenneth C Blaney
Abstract: We report the results of an investigation into the signal characteristics and behavior of an instrument used to calibrate Optical Time Domain Reflectometers. This instrument implements the Telecommunications Industry Association standard TIA/EIA-455- ...

24. Characterization of Soluble Anthradithiophene Derivatives
Topic: Physics
Published: 3/18/2010
Authors: Brad Conrad, Calvin Chan, Marsha A. Loth, John E Anthony, David J Gundlach
Abstract: We will discuss the growth and electrical measurements of a newly developed, partially fluorinated anthradithiophene (F-ADT) derivative with tert-butyldiphenylsilyl (TBDMS) side groups. Single crystals of the material can be readily grown and device ...

25. Characterization of a Soluble Anthradithiophene Derivative
Topic: Physics
Published: 10/1/2010
Authors: Brad Conrad, Calvin Chan, Marsha A. Loth, Sean R Parkin, Xinran Zhang, John E Anthony, David J Gundlach
Abstract: The structural and electrical properties of a new solution processable material, 2,8-diflouro-5,11-tert-butyldimethylsilylethynl anthradithiophene (TBDMS), were measured for single crystal and spun cast thin-film transistors. TBDMS is observed to rea ...

26. Classical over-the-barrier model for neutralization of highly charged ions above thin dielectric films
Topic: Physics
Published: 6/3/2013
Authors: Joshua M Pomeroy, Russell Lake, C E Sosolik
Abstract: We apply the classical over-the-barrier model (COB) to charge transfer between highly charged ions (HCIs)and targets consisting of thin dielectric films on metals. Distances for the onset of classically allowed above surface electron capture are ...

27. Code-division SQUID multiplexing
Topic: Physics
Published: 4/23/2010
Authors: Michael D. Niemack, Kent D Irwin, Joern Beyer, Hsiao-Mei Cho, William B Doriese, Gene C Hilton, Carl D Reintsema, Daniel Richard Schmidt, Joel Nathan Ullom, Leila R Vale
Abstract: Multiplexed superconducting quantum interference device (SQUID) readout systems are a critical technology for measuring large arrays of superconducting transition-edge sensor (TES) detectors. Current successful SQUID multiplexing architectures are mo ...

28. Conflicting Observations Resolved by a Far IR and UV/Vis Study of the NO^d3^ Radical
Topic: Physics
Published: 5/4/2009
Authors: Helmut Beckers, Helge Willner, Marilyn E Jacox
Abstract: By codeposition of NO/Ne and O2/Ne mixtures at 6 K, weakly bound complexes between O2 and NO are formed. They exhibit a strong, structured charge transfer UV band at lambda(max) = 275 nm. The UV band disappears during UV irradiation of the neon mat ...

29. Controlling the Competition between Optically Induced Ultrafast Spin-Flip Scattering and Spin Transport in Magnetic Multilayers
Topic: Physics
Published: 5/7/2013
Authors: Justin M Shaw, Hans Toya Nembach, Thomas J Silva, Margaret M. Murnane, Henry C. Kapteyn, Martin Aeschlimann, Claus M. Schneider, Emrah Turgut, Stefan Mathias, Patrik Grychtol, Chan La-O-Vorakiat, Dennis Rudolf, Roman Adam
Abstract: The study of ultrafast dynamics in magnetic materials provides rich opportunities for greater fundamental understanding of correlated phenomena in solid-state matter, because many of the basic microscopic mechanisms involved are as-yet unclear and ar ...

30. Coupled quantized mechanical oscillators
Topic: Physics
Published: 3/10/2011
Authors: Kenton R. Brown, Christian Ospelkaus, Yves Colombe, Andrew C Wilson, Dietrich G Leibfried, David J Wineland
Abstract: The harmonic oscillator is one of the simplest physical systems but also one of the most fundamental. It is ubiquitous in nature, often serving as an approximation for a more complicated system or as a building block for larger models. Realizations o ...

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