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Search Publications

NIST Authors in Bold

Displaying 30751 - 30775 of 143727

Structural Elucidation of Chemical and Post-translational Modifications of Monoclonal Antibodies

October 15, 2015
Author(s)
Wenzhou Li, James L. Kerwin, John E. Schiel, Catherine A. Mouchahoir, Darryl Davis, Andrew Mahan, Sabrina A. Benchaar
Therapeutic monoclonal antibodies (mAbs), a rapidly growing class of therapeutic drugs, present a daunting challenge for structural characterization. They are heterodimers of separate light and heavy chains comprising over 1200 amino acid residues. During

Understanding Small-Molecule Interactions in Metal-Organic Frameworks: Coupling Experiment with Theory

October 14, 2015
Author(s)
Jason S. Lee, Bess Vlaisavljevich, David K. Britt, Craig Brown, Maciej Haranczyk, Jeffrey B. Neaton, Berend Smit, Jeffrey R. Long, W. L. Queen
Metal-organic frameworks (MOFs) have gained much attention as next generation porous media for various applications, especially gas separations/storage and catalysis. New MOFs are regularly reported; however, to develop better materials in a timely manner

Compact atom-interferometer gyroscope based on an expanding ball of atoms

October 12, 2015
Author(s)
Elizabeth A. Donley, John E. Kitching, Stefan Riedl, Gregory W. Hoth, Bruno M. Pelle
We present a compact atom interferometer based on 87Rb atoms that can simultaneously measure rotations and accelerations with a single source of atoms in a 300 cm3 vacuum package.

Measurement of the Microwave Lensing Shift in NIST-F1 and NIST-F2

October 12, 2015
Author(s)
Steven R. Jefferts, Stephan E. Barlow, Thomas P. Heavner, Neil Ashby
We present measurements of the microwave lensing frequency shift in the Primary Frequency Standards (PFS) NIST-F1 and NIST-F2. This frequency bias is reasonably controversial with differing theories giving quite different results. Our measurements are in

Microfabricated Optically-Pumped Magnetometers for Biomagnetic Applications

October 12, 2015
Author(s)
Svenja A. Knappe, John E. Kitching, Orang Alem, Dong Sheng
We report on the progress in developing microfabricated optically-pumped magnetometer arrays for imaging applications. We have improved our sensitivities by several orders of magnitude in the last ten years, Now, our zero-field sensors reach values below

Octave-spanning supercontinuum generation via microwave frequency multiplication

October 12, 2015
Author(s)
Daniel C. Cole, Katja M. Beha, Scott B. Papp, Scott A. Diddams
We demonstrate a system based on telecom components for the generation of an octave-spanning supercontinuum from a continuous-wave laser. The system utilizes direct multiplication of the 10 GHz signal derived from a synthesizer. Pulses are carved from the

SPIE 9639-49 Creation and Validation of Spectralon BRDF Targets & Standards

October 12, 2015
Author(s)
Catherine C. Cooksey, Gael Obein, Georgi T. Georgiev, Christopher Durell, Dan Scharpf, Greg McKee, Michelle L'Heureux
Spectralon is an extremely stable, near-perfect lambertian reflecting diffuser and calibration standard material that has been used by national labs, space, aerospace and commercial sectors for over two decades. New uncertainty targets of 2% on-orbit

Who Touched my Mission: Towards Probabilistic Mission Impact Assessment

October 12, 2015
Author(s)
Xiaoyan Sun, Anoop Singhal, Peng Liu
Cyber attacks inevitably generate impacts towards relevant missions. However, concrete methods to accurately evaluate such impacts are rare. In this paper, we propose a probabilistic approach based on Bayesian networks for quantitative mission impact

Antenna Measurement Implementations and Dynamic Positional Validation Using a Six Axis Robot

October 11, 2015
Author(s)
David R. Novotny, Josh Gordon, Michael H. Francis, Ronald C. Wittmann, Alexandra Curtin, Jeffrey R. Guerrieri
We have performed spherical and extrapolation scans of two antennas at 118 GHz using a commercial 6-axis robot. Unlike spherical scanning, linear extrapolations do not precisely conform to the native circular movement of the individual robot axes. To

Dielectric Spectroscopic Detection of Early Failures in 3-D Integrated Circuits

October 11, 2015
Author(s)
Yaw S. Obeng, Chukwudi A. Okoro, Jungjoon Ahn, Lin You, Joseph J. Kopanski
The commercial introduction of three dimensional integrated circuits (3D-ICs) has been hindered by reliability challenges, such as stress related failures, resistivity changes, and unexplained early failures. In this paper, we discuss a new RF-based

Consensus Value Method to Compile On-Axis Gain Measurement Results

October 10, 2015
Author(s)
Jeffrey R. Guerrieri, Michael H. Francis, Ronald C. Wittmann
This paper shows that a consensus value method can be used to compile on-axis gain measurement data that have a large range of values and uncertainties. A variety of methods are used to analyze multiple data sets such as un-weighted averages, weighted
Displaying 30751 - 30775 of 143727
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