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Search Publications

NIST Authors in Bold

Displaying 3576 - 3600 of 74638

Accelerator Mass Spectrometry Analysis of Carbonaceous Aerosols Captured in High Alpine Snow

October 12, 2021
Author(s)
R H. Weissenbok, Lloyd A. Currie, C Grollert, W Kutschera, J L. Marolf, A Priller, H Puxbaum, William N. Rom, P Steier
The capability for Accelerator Mass Spectrometry (AMS) to perform submilligram 14C measurements has considerable implications for environmental carbon research, especially for tracer studies of low concentration carbonaceous aerosols in remote regions. In

Acoustoelasticity, Theory and Experiment

October 12, 2021
Author(s)
L Jiang, Regis J. Kline, Y Yacobi, E Drescher-Krasicka
As a promising tool to characterize residual stress in engineering structural components, acoustoelasticity has been the subject of a great deal of research over the past forty years. Although considerable achievements have been derived, most approaches of

Additive-Containing Rinses for LER and Defectivity Control During High-Resolution Resist Patterning

October 12, 2021
Author(s)
D L. Goldfarb, S D. Burns, M Angelopolous, S Skordas, R L. Burns, M C. Lawson, C J. Brodsky, V Vishnu, E Jablonski, Vivek Prabhu, Ronald L. Jones, B D. Vogt, Christopher Soles, Eric K. Lin, Wen-Li Wu
The addition of a surface conditioning agent to the de-ionized water rinse used to quench the photoresist development process is an attractive methodology that can afford a controlled decrease in resist line edge roughness (LER) or a reduction in

Advanced Laser Cooling for the Atomic Space Clock

October 12, 2021
Author(s)
V Boyer, L Lising, S L. Rolston, William D. Phillips
An atomic clock works by comparing the frequency of a local oscillator (a micrwave generator) with the hyperfine transition of the cesium atom at 9.2 GHz. In general, the precision of a clock is limited by the observation time. For an atomic clock, it is

Advances in Magnetometry Through Miniaturization

October 12, 2021
Author(s)
A Edelstein, J Burnette, Greg Fischer, S F. Cheng, William F. Egelhoff Jr., Robert McMichael, E Nowak
Recent innovations may lead to magnetic sensors that are smaller, more sensitive and/or cost less than current magnetometers. Examples of this are the chip scale atomic magnetometer, magnetic tunnel junctions with MgO barriers, and a device for minimizing

Amino Acid Exchangeability from Experimental Data

October 12, 2021
Author(s)
L Y. Yampolsky, Arlin Stoltzfus
Amino acid sequence differences between proteins are often interpreted by reference to a pairwise measure of amino acid similarity, based either on observed evolutionary transition probabilities, or on some physicochemical model of effects. However

Analysis of Point-Contact Andreev Reflection Spectra in Spin Polarization Measurements

October 12, 2021
Author(s)
G T. Woods, Robert J. Soulen, I I. Mazin, B Nadgorny, M. S. Osofsky, J Sanders, H. Srikanth, William F. Egelhoff Jr., Raju V. Datla
We present a systematic analysis of point-contact Andreev reflection (PCAR) spectra for ferromagnetic materials, using both modeling and experimental data. We emphasize the importance of consistent data analysis to avoid possible misinterpretation of the

Analysis of the Free Ion Nd 3+ Spectrum (Nd IV)

October 12, 2021
Author(s)
J-F Wyart, Ali Meftah, Wan-U Lydia Tchang-Brillet, Norbert Champion, O Lamrous, Nissan Spector, J Sugar
Recent breakthrough in the analysis of Nd IV resulted in the establishment of 37 energy levels of the ground configuration 4f^3. We report here the completion to all 41 levels of this configuration. Wavelength measurements extended to 2800 A and in higher

Analytical and Numerical Analyses for Two-Dimensional Stress Transfer

October 12, 2021
Author(s)
C H. Hsueh, P Becher, Lin-Sien H. Lum, Stephen A. Langer, W Carter
Both analytical modeling and numerical simulations were performed to analyze the stress transfer in platelet-reinforced composites in a two-dimensional sense. In the two-dimensional model, an embedded elongate plate bonded to a matrix along its length

Annealing Temperature Dependences of Magnetization Reversal in Exchange Biased Bilayers

October 12, 2021
Author(s)
C G. Lee, V S. Gornakov, B H. Koo, K S. Shin, Robert McMichael, Andrew P. Chen, William F. Egelhoff Jr.
The thermal stability of the hysteretic properties and domain structures of exchange-coupled Co-Fe/Ir-Mn and Ni-Fe/Ir-Mn bilayers was studied. Using the magneto-optical indicator film technique, X-ray diffractometry, and VSM, we have revealed that the

Anomalous Asymmetric Intermixing in Pt/Ti

October 12, 2021
Author(s)
P Sule, M. Menyhard, L Kotis, J Labar, William F. Egelhoff Jr.
The ion-sputtering induced intermixing is studied by Monte-Carlo TRIM, molecular dynamics (MD) simulations, and Auger electron spectroscopy depth pro_ling (AES-DP) analysis in Pt/Ti/Si substrate (Pt/Ti) and Ta/Ti/Pt/Si substrate (Ti/Pt) multilayers

Anomalously Fast Decay of the LH-HH Exciton Raman Coherence

October 12, 2021
Author(s)
C N. Borca, A G. VanEngen Spivey, Steven T. Cundiff
We perform a three-pulse transient four-wave-mixing experiment on a weakly disordered GaAs/AlGaAs multiple quantum well. This allows us to measure both the decay of the Raman coherence between the heave-hole and light -hole excitons in a semiconductor

Anthrax Toxin Functional Assay: Lethal Factor Binding to Protective Antigen Ion Channel

October 12, 2021
Author(s)
Kelly Halverson, R G. Panchal, T L. Nguyen, S Little, Martin Misakian, Sina Bavari, John J. Kasianowicz
Bacillus anthracis secretes three toxins (protective antigen, PA; lethal factor, LF; and edema factor, EF) that are the molecular basis of anthrax-induced cell death. We studied the functional interaction between LF and activated PA (PA63) in planar
Displaying 3576 - 3600 of 74638