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NIST Authors in Bold

Displaying 13076 - 13100 of 73697

Large Area Alpha Sources with a Lip: Integral Counting and Spectral Distortions

August 31, 2017
Author(s)
Lynne E. King, Ryan P. Fitzgerald, Ronald Tosh
The detection efficiency for large area alpha sources with adjustable heights of a raised lip around the edge were measured by 2π gas-filled proportional counter. The variations in low- energy spectral shape were modeled using a Geant4 radiation and charge

Small molecule inhibitors of DNA glycosylases as potential drugs in cancer therapy

August 31, 2017
Author(s)
M Miral Dizdar, Aaron C. Jacobs, Nathan Donley, Marcus J. Calkins, Ajit Jadhav, Dorjbal Dorjsuren, David Maloney, Anton Simeonov, Pawel Jaruga, Erdem Coskun, Amanda K. McCullough, R. S. Lloyd
Statement of the Problem: Most chemotherapeutic agents kill cancer cells by damaging DNA. Cancer cells overexpress DNA repair proteins and thus increase DNA repair capacity that can cause resistance to therapy by removing DNA lesions before they become

ThermoData Engine (TDE) Version 10.2 (Pure Compounds, Binary Mixtures, Ternary Mixtures, and Chemical Reactions): NIST Standard Reference Database 103b

August 31, 2017
Author(s)
Vladimir Diky, Chris D. Muzny, Alexander Y. Smolyanitsky, Ala Bazyleva, Robert D. Chirico, Joe W. Magee, Yauheni Paulechka, Andrei F. Kazakov, Scott A. Townsend, Eric W. Lemmon, Michael D. Frenkel, Kenneth G. Kroenlein
The ThermoData Engine is a software expert system implementing the concept of dynamic data evaluation for thermophysical and thermochemical properties of, primarily, organic compounds. This new release provides a substantially expanded database of

Threshold Dynamics of a Semiconductor Single Atom Maser

August 31, 2017
Author(s)
Michael Gullans, Jacob M. Taylor, Yinyiu Liu, J. Stehlik, Christopher Eichler, X Mi, T Hartke, Jason Petta
We demonstrate a single-atom maser consisting of a semiconductor double quantum dot (DQD) that is embedded in a high quality factor microwave cavity. A finite bias drives the DQD out of equilibrium resulting in sequential single electron tunneling and

Metrology Outreach and Training: A Fulbright Experience in Mexico

August 30, 2017
Author(s)
Georgia L. Harris, Flora Mercader, Adriana Veraza, Salvador Echeverria Villagomez
2016 was an exciting year for international collaboration on metrology education and training. This paper provides a 3-part look at how a Fulbright Specialist grant supported collaboration between the United States and Mexico. Part 1 describes the

Novel Nanofluidic Chemical Cells based on Self-Assembled Solid-State SiO2 Nanotubes

August 30, 2017
Author(s)
Hao Zhu, Haitao Li, Arvind Balijepalli, Joseph W. Robertson, Sergiy Krylyuk, Albert Davydov, John J. Kasianowicz, John S. Suehle, Qiliang Li
Novel nanofluidic chemical cells based on self-assembled solid-state SiO2 nanotubes on silicon- on-insulator (SOI) substrates have been successfully fabricated and tested. The vertical SiO2 nanotubes with a smooth cavity are built from Si nanowires which

Optical spin transfer and spin-orbit torques in thin-film ferromagnets

August 30, 2017
Author(s)
Junwen Li, Paul M. Haney
We study the optically induced torques on thin film ferromagnetic layers under excitation by circularly polarized light. We include Rashba spin-orbit coupling and assume an out-of-plane magnetization, and consider incident light with an in-plane component

Diffusion of water in silica: Influence of moderate stresses

August 29, 2017
Author(s)
Sheldon M. Wiederhorn, Susanne Wagner, Gabriele Rizzi, Michael J. Hoffmann, Theo Fett
Here we study the diffusive transfer of water into silica glass in the presence of externally applied stresses, and stresses caused by water induced swelling of the glass. By considering the simultaneous action of water penetration into the surface of

Towards integrated superconducting detectors on lithium niobate waveguides

August 29, 2017
Author(s)
Jan P. Hoepker, Moritz Bartnick, Evan Meyer-Scott, Frederik Thiele, Stephan Krapick, Nicola Montaut, Matteo Santandrea, Harald Herrmann, Sebastian Lengeling, Raimund Ricken, Victor Quiring, Torsten Meier, Adriana Lita, Varun Verma, Thomas Gerrits, Sae Woo Nam, Christine Silberhorn, Tim J. Bartley
Superconducting detectors are now well-established tools for low-light optics, and in particular quantum optics, boasting high-efficiency, fast response and low noise. Similarly, lithium niobate is an important platform for integrated optics given its

Understanding the Major Update to NIST SP 800-63: Digital Identity Guidelines

August 29, 2017
Author(s)
Michael E. Garcia, Paul A. Grassi, Kristina G. Rigopoulos, Larry Feldman, Gregory A. Witte
This bulletin outlines the updates NIST recently made in its four-volume Special Publication (SP) 800-63, Digital Identity Guidelines, which provide agencies with technical guidelines regarding the digital authentication of users to federal networked

Effects of Powder Oxidation on Impact Toughness of Electron Beam Melt Ti-6Al-4V

August 25, 2017
Author(s)
Edward J. Garboczi, Enrico Lucon, William Grell, Z Loftus, Maciej Kumosa, E Solis-Ramos, Paul Predecki, E Clark
Powder quality in additive manufacturing (AM) electron beam melt (EBM) of Ti-6Al-4V components is crucial in determining the critical material properties of the end item. In this study, we report on the effect of powder oxidation on Charpy impact energy of

Pattern selection in ternary mushy layers

August 25, 2017
Author(s)
Daniel M. Anderson
We consider finite-amplitude convection in a mushy layer during the primary solidification of a ternary alloy. A previous linear theory identified, for the case of vanishing latent heat, solute rejection and background solidification, a direct mode of

An Analytical Solubility Model for Nitrogen-Methane-Ethane Ternary Mixtures

August 24, 2017
Author(s)
Jason Hartwig, Peter Meyerhofer, Ralph Lorenz, Eric Lemmon
Saturn's moon Titan has surface seas of liquid hydrocarbons and a thick, cold, nitrogen atmosphere, and is a target for future exploration. Critical to the design and operation of vehicles for this environment is knowledge of the amount of dissolved
Displaying 13076 - 13100 of 73697
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