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Search Publications

NIST Authors in Bold

Displaying 2826 - 2850 of 2915

Charge Nucleation and Wear on Mica Surfaces

October 16, 2008
Author(s)
J Batteas
The area of nanotribology has advanced greatly in the past 17 years with the introduction of scanned probe microscopies for the characterization of surface properties. The ability to probe the details of structure, friction and adhesion on a local atomic

Nonlinear charge transport in semiconducting polythiophene

May 23, 2006
Author(s)
Jan Obrzut
We measured the complex impedance and nonlinear conductivity for regioregular poly(3-hexylthiophene) (P3HT) by recording and analyzing AC waveforms at their fundamental frequency and at higher order harmonic frequencies. We used 50 µm thick films of P3HT

Ground Truth and Benchmarks for Performance Evaluation

April 25, 2003
Author(s)
A Takeuchi, Michael O. Shneier, Tsai H. Hong, Christopher J. Scrapper Jr, Geraldine Cheok
Progress in algorithm development and transfer of results to practical applications such as military robotics requires the setup of standard tasks, of standard qualitative and quantitative measurements for performance evaluation and validation. Although

TROPODEGRADABLE AND OTHER ENVIRONMENTALLY ACCEPTABLE FLAME EXTINGUISHANTS

January 1, 2003
Author(s)
J D. Mather, R E. Tapscott
In work sponsored by the National Institute of Standards and Technology and the Next-Generation Fire Suppression Technology Program, our current research effort is directed toward the continued study of known promising as well as several new chemical

Understanding the Correlation Structure of Network Traffic

December 24, 2002
Author(s)
Kevin L. Mills, J Yuan
This paper aims to improve current understanding of the correlation structure of traffic carried over large networks, such as the Internet. To achieve this aim we use simulation, adopting a methodology of homogenization to achieve a sufficiently large

Atomic Force Microscopy of Semiconductor Line Edge Roughness

October 1, 2002
Author(s)
N G. Orji, Jayaraman Raja, Theodore V. Vorburger
Over the last two decades the width of patterned lines on semiconductor devices has continuously decreased. Based on technology trends predicted by the International Technology Roadmap for Semiconductors (ITRS), the linewidth of isolated gate lines on

Alignment and Orientation Effects in Sr Energy Pooling

December 1, 1999
Author(s)
Harold V. Parks, S R. Leone
Alignment and orientation effects in the energy pooling process, Sr(5s5p 3P 1) + Sr(5s5p 3P 1)-> Sr(5s5p 1P 1) + Sr(5s 2 1S o), are studied in a single atomic beam. The Sr atoms are prepared in an aligned initial state with a polarized laser, and alignment

Rod and slit photonic crystal microrings for on-chip cavity quantum electrodynamics

January 10, 2023
Author(s)
Xiyuan Lu, Feng Zhou, Yi Sun, Mingkang Wang, Qingyang Yan, Ashish Chanana, Andrew McClung, Vladimir Aksyuk, Marcelo Davanco, Kartik Srinivasan
Micro-/nanocavities that combine high quality factor (Q) and small mode volume (V) have been used to enhance light-matter interactions for cavity quantum electrodynamics (cQED). Whispering gallery mode (WGM) geometries such as microdisks and microrings

Chip-based laser with 1-hertz integrated linewidth

October 28, 2022
Author(s)
Joel Guo, Charles McLemore, Chao Xiang, Dahyeon Lee, Lue Wu, Warren Jin, Megan Kelleher, Naijun Jin, Lin Chang, Avi Feshali, Mario Paniccia, Peter Rakich, Kerry Vahala, Scott Diddams, Franklyn Quinlan, John Bowers
Lasers with hertz-level linewidths on timescales up to seconds are critical for precision metrology, timekeeping, and the manipulation of quantum systems. Such frequency stability typically relies on bulk-optic lasers and reference cavities, where

Soluble Amyloid [Beta] Oligomers Affect Dielectric Properties by Membrane Incorporation and Domain Formation: Implications for Cell Toxicity

October 12, 2021
Author(s)
G Valinius, K F. Heinrich, R Budvytye, David J. Vanderah, Y Sokolov, J Hall, M Losche
Water-soluble prefibrillar amyloid b (Ab1 42) oligomers affect model bilayers by greatly reducing the membrane barrier to ion transport, as previously reported for Ab in many papers. However, important signatures of the molecular transport mechanism are

Blockchain Networks: Token Design and Management Overview

February 9, 2021
Author(s)
Loic D. Lesavre, Priam C. Varin, Dylan J. Yaga
Blockchain technology has enabled a new software paradigm for managing digital ownership in partial- or zero-trust environments. It uses tokens to conduct transactions, exchange verifiable data, and achieve coordination across organizations and on the web

Twist Angle-Dependent Atomic Reconstruction and Moire Patterns in Transition Metal Dichalcogenide Heterostructures

March 13, 2020
Author(s)
Matthew R. Rosenberger, Hsun-Jen Chuang, Vladimir Oleshko, Madeleine Phillips, Kathleen M. McCreary, Saujan V. Sivaram, C. Stephen Hellberg, Berend T. Jonker
Van der Waals layered materials, such as the transition metal dichalcogenides (TMDs), are an exciting class of materials with weak interlayer bonding which enables one to create so-called van der Waals heterostructures (vdWH). One promising attribute of

Terahertz-Rate Kerr-Microresonator Optical Clockwork

August 12, 2019
Author(s)
Tara E. Drake, Travis Briles, Daryl T. Spencer II, Jordan R. Stone, David R. Carlson, Daniel D. Hickstein, Qing Li, Daron A. Westly, Kartik A. Srinivasan, Scott A. Diddams, Scott B. Papp
Kerr microresonators generate interesting and useful fundamental states of electromagnetic radiation through nonlinear interactions of continuous-wave (CW) laser light. When implemented with photonic-integration techniques, functional devices with low

Transformation of Engineered Nanomaterials through the Prism of Silver Sulfidation

January 1, 2019
Author(s)
Fan Zhang, Andrew J. Allen, Aaron C. Johnston-Peck, Jingyu Liu, John M. Pettibone
Structure transformation of engineered nanomaterials (ENMs) often dictates their efficacy, safety, and environmental impact. To address the existing significant knowledge gap regarding the fundamental kinetic rate and extent of ENMs transformation in

A Versatile Technique to Enable Sub-Milli-Kelvin Instrument Stability for Precise Radial Velocity Measurements: Tests with the Habitable-Zone Planet Finder

December 16, 2016
Author(s)
Ryan C. Terrien, Guomundur K. Stefansson, Fred Hearty, Paul Robertson, Suvrath Mahadevan, Tyler Anderson, Chad Bender, Matthew Nelson, Andrew Monson, Basil Blank, Samuel Halverson, Chuck Henderson, Lawrence Ramsey, Arpita Roy, Christian Schwab
Insufficient instrument thermo-mechanical stability is one of the fundamental roadblocks for achieving 10 cm s −1 Doppler radial velocity (RV) precision, the precision needed to detect Earth-twins orbiting Solar-type stars. Exquisite temperature and

Measurement of DNA repair protein apurinic/apyrimidinic endonuclease 1 (APE1) in human tissues by liquid chromatography/tandem mass spectrometry with isotope dilution

June 5, 2016
Author(s)
Pawel Jaruga, Guldal Kirkali, Prasad T. Reddy, Alessandro Tona, Bryant C. Nelson, Li Mengxia, David M. Wilson III, Erdem Coskun, M Miral Dizdar
Introduction DNA repair proteins may be used as biomarkers in disease etiology and therapy. Thus, the accurate determination of DNA repair protein expression and genotype in human tissues is of fundamental importance. Apurinic/apyrimidinic endonuclease 1
Displaying 2826 - 2850 of 2915
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