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Displaying records 21 to 30 of 231 records.
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21. Preparation of nanocomposite plasmonic films made from cellulose nanocrystals or mesoporous silica decorated with unidirectionally aligned gold nanorods
Topic: Physics
Published: 4/11/2014
Authors: Michael Campbell, Qingkun Liu, Aric Warner Sanders, Julian Evans, Ivan I. Smalyukh
Abstract: Using liquid crystalline self-assembly of cellulose nanocrystals, we achieve long-range alignment of anisotropic metal nanoparticles in colloidal nanocrystal dispersions that are then used to deposit thin structured films with ordering features h ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=915636

22. Dual-polarization-sensitive kinetic inductance detectors for balloon-borne, sub-millimeter polarimetry
Topic: Physics
Published: 3/20/2014
Authors: James A Beall, Daniel Thomas Becker, Justus A Brevik, Hsiao-Mei Cho, Gene C Hilton, Kent D Irwin, Dale Li, David P Pappas, Jeffrey Lee Van Lanen, Johannes Hubmayr
Abstract: We are developing arrays of kinetic inductance detectors for sub-millimeter polarimetry that will be deployed on the BLAST balloon-borne instrument. The array is feedhorn-coupled, and each pixel contains two lumped-element kinetic inductance dete ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=914331

23. Head and Media Challenges for 3 Tb/in^u2^ Microwave Assisted Magnetic Recording
Topic: Physics
Published: 2/3/2014
Authors: Thomas J Silva, Justin M Shaw, Hans Toya Nembach, Mike Mallary, Kumar Srinivasan, Gerado Bertero, Dan Wolf, Christian Kaiser, Michael Chaplin, Mahendra Pakala, Leng Qunwen, Yiming Wang, Carl Elliot, Lui Francis
Abstract: A specific design for Microwave Assisted Magnetic Recording (MAMR) at about 3Tb/in^u2^ (0.47 Tb/cm^u2^ or 4.7 Pb/m^u2^) is discussed in detail to highlight the challenges of MAMR and to contrast its requirements with conventional Perpendicular Magnet ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=914220

24. Time Measurement
Topic: Physics
Published: 2/3/2014
Author: Michael A Lombardi
Abstract: An overview of time metrology, with emphasis on time interval measurements, and time synchronization. It covers the evolution of clocks and timekeeping, time scales, the fundamentals of time measurement, and the various time transfer technique used ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=907332

25. Absorptions Between 3000 and 5500 cm-1 of cyclic O4+ and O4- Trapped in Solid Neon
Topic: Physics
Published: 12/19/2013
Authors: Marilyn E Jacox, Warren Elwin Thompson
Abstract: Recently, gas-phase absorptions in the 3000 to 4300 cm-1 spectral region have been assigned to combination bands built on (v1 + v5) of ground-state cyc-O4+. Other gas-phase experiments identified an electronic transition of cyc-O4- complexed with an ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=914264

26. Standardization of 237Np
Topic: Physics
Published: 12/4/2013
Authors: Lizbeth Laureano-Perez, Ryan P Fitzgerald, Ronald Colle
Abstract: The standardization of 237Np was investigated. The certified massic activity for 237Np was obtained by 4 liquid scintillation (LS) counting with correction for the 233Pa daughter using the CIEMAT/NIST efficiency tracing method ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=913828

27. Absolute line intensities for oxirane from 1420 to 1560 cm-1
Topic: Physics
Published: 11/15/2013
Authors: F Kwabia Tchana, M. Ngom, Agnes Perrin, Jean-Marie Flaud, Walter Joseph Lafferty, S. A. Ndiaye, El. A. Ngum
Abstract: Absolute individual line intensities of numerous transitions of the fundamental ν2 and ν10 bands of oxirane (ethylene oxide, c-C2H4O) have been measured in the 1420-1560 cm-1 region using seven high- resolution Fourier transform spectra ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=914129

28. Absolute line intensities for the nu3 band of oxirane (C2H4O)
Topic: Physics
Published: 11/15/2013
Authors: Walter Joseph Lafferty, Jean-Marie Flaud, Fridolin Kwabia, A. Perrin, M. Ngom
Abstract: Seven Fourier transform spectra of the ν3 band of oxirane (ethylene oxide) have been recorded with different pressures and used to derive individual line intensities. These line intensities were satisfactorily fit leading to accurate transition ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=911937

29. EUV-Driven Carbonaceous Film Deposition and Its Photo-oxidation on a TiO2 Film Surface
Topic: Physics
Published: 9/23/2013
Authors: Nadir S. Faradzhev, Monica McEntee, John Yate, Shannon Bradley Hill, Thomas B Lucatorto
Abstract: We report the photo-deposition of a carbonaceous layer grown on a TiO2 thin film by EUV radiation-induced chemistry of adsorbed n-tetradecane and the subsequent photo-oxidation of this film. It is found by chemical analysis of the C layer that irradi ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=913704

30. Development of in-situ calibration method for current-to-voltage converters for high-accuracy SI-traceable low-DC-current measurements
Topic: Physics
Published: 9/20/2013
Authors: George P Eppeldauer, Howard W Yoon, Dean G Jarrett, Thomas C Larason
Abstract: For photocurrent measurements with low uncertainties, wide-dynamic range reference current-to-voltage converters and a new converter calibration method have been developed at the National Institute of Standards and Technology (NIST). The high feedba ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=914149



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