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Search Publications

NIST Authors in Bold

Displaying 20151 - 20175 of 73963

Dual-polarization-sensitive kinetic inductance detectors for balloon-borne, sub-millimeter polarimetry

March 20, 2014
Author(s)
James A. Beall, Dan Becker, Justus Brevik, Hsiao-Mei Cho, Gene C. Hilton, Kent D. Irwin, Dale Li, David P. Pappas, Jeffrey L. Van Lanen, Johannes Hubmayr
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 detectors

Bootstrap Variability Studies in ROC Analysis on Large Datasets

March 19, 2014
Author(s)
Jin Chu Wu, Alvin F. Martin, Raghu N. Kacker
The nonparametric two-sample bootstrap is employed to compute uncertainties of measures in receiver operating characteristic (ROC) analysis on large datasets in areas such as biometrics, and so on. In this framework, the bootstrap variability was

Comparison of independently calculated ab-initio normal-mode displacements for the three C-H stretching vibrations of methanol along the internal rotation path

March 19, 2014
Author(s)
Li-Hong Xu, Ronald M. Lees, Jon T. Hougen, Joel M. Bowman, Xinchuan Huang, Stuart Carter
Comparison of graphical displays of normal-mode coefficients from recent quantum chemical projected-frequency calculations with analogous displays constructed after reexamination of results from more extensive higher-level calculations described earlier in

Growth and Applications of Single-Nanowire GaN Light Emitting Diodes

March 19, 2014
Author(s)
Kristine A. Bertness
We discuss two applications of single-nanowire GaN light emitting diodes, optical interconnects and multifunction scanning probes. These applications take advantage of the native morphology of nanowires and the high mechanical strength of GaN.

Application of Falling-Needle Rheometry to Highly Concentrated DNA Solutions.

March 18, 2014
Author(s)
Jessica L. Burger, Hideki Yamamoto, Takamasa Suzuki, Arno D. Laesecke
High concentration DNA solutions are common both in vitro and in vivo, and understanding the rheological properties is a critical area of bioscience. Our previous measurements on high concentration DNA solutions (2-6 mg/ml) interestingly provided evidence

Effect of High-(KAPPA) Dielectric Passivation on Electrical Transport and Low-Frequency Noise in Single-Layer MoS_(2) Devices

March 18, 2014
Author(s)
Deepak K. Sharma, Matin Amani, Abhishek Motayed, Pankaj B. Shah, A. Glen Birdwell , Sina Najmaei, Pulickel M. Ajayan, Jun Lou, Madan Dubey, Qiliang Li, Albert Davydov
We have studied temperature-dependent (300K to 77K) electrical characteristics and low-frequency noise (LFN) in chemical vapor deposited (CVD) single layer molybdenum disulfide MoS_(2) based back-gated field-effect transistors (FETs). Electrical

Phase Equilibria and Crystal Chemistry of the CaO-?Nd2O3-CoOz System at 885 degC in Air

March 18, 2014
Author(s)
Winnie K. Wong-Ng, William Laws, Kevin R. Talley, Qingzhen Huang, Jun Yan, Joshua B. Martin, James A. Kaduk
The phase diagram of the CaO-¿Nd2O3-CoOz system at 885 °C in air has been determined. The system consists of two calcium cobaltate compounds that have promising thermoelectric properties, namely, the 2D thermoelectric oxide solid solution, (Ca3-xNdx)Co4O9

Highly reproducible and reliable metal/graphene contact by UV-Ozone treatment

March 17, 2014
Author(s)
Wei Li, Christina A. Hacker, Guangjun Cheng, Angela R. Hight Walker, Curt A. Richter, David J. Gundlach, Yiran Liang, boyuan Tian, Xuelei Liang, Lianmao Peng
Resist residue from the device fabrication process is a significant source of contamination at the metal/graphene contact interface. Ultraviolet Ozone (UVO) treatment is proven here, by X-ray photoelectron spectroscopy (XPS) and Raman measurement, to be an

Performance of Coriolis Meters in Transient Gas Flows

March 17, 2014
Author(s)
Jodie G. Pope, John D. Wright
NIST evaluated the instantaneous and totalized flow measured by two commercial coriolis meters under transient flow, pressure, and temperature conditions using a Transient Flow Facility (TFF) developed for this purpose. During a simulated cascade fill of a

A nonlinear model for gusset plate connections

March 15, 2014
Author(s)
Dat Duthinh, Chiara Crosti
The investigation of the 2007 collapse of the I-35 W Bridge in Minnesota, United States, used very detailed nonlinear finite-element (FE) analysis, which is too difficult for routine design. On the other hand, simple guidelines amenable to hand

Objective Image Quality Assessment of Texture Compression

March 14, 2014
Author(s)
Wesley N. Griffin, Marc Olano
Texture compression is widely used in real-time rendering to reduce storage and bandwidth requirements. Recent research in compression algorithms has explored both reduced fixed bit rate and variable bit rate algorithms. The results are evaluated at the

Recommendations for Seismic Design of Reinforced Concrete Wall Buildings Based on Studies of the 2010 Maule, Chile Earthquake

March 14, 2014
Author(s)
Joseph Maffei, Patricio Bonelli, Dominic Kelly, Dawn E. Lehman, Laura Lowes, Jack Moehle, Karl Telleen, John Wallace, Michael Willford
Most mid-rise and high-rise buildings in the earthquake-affected regions were constructed with seismic-force-resisting systems consisting of reinforced concrete structural walls. Similar construction is also prevalent in regions of high seismicity in the
Displaying 20151 - 20175 of 73963
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