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NIST Authors in Bold

Displaying 20751 - 20775 of 73751

Two-photon interference with continuous-wave operating multi-mode coherent light

September 12, 2013
Author(s)
Yong-Su Kim, Oliver T. Slattery, Paulina Kuo, Xiao Tang
We report two-photon interference with continuous-wave multi-mode coherent light. We show that the two-photon interference, in terms of the detection time difference, reveals two-photon beating fringes with the visibility V = 0.5. While scanning the

Use Case Analysis for Standard Manufacturing Service Capability Model

September 12, 2013
Author(s)
Yunsu Lee, Boonserm Kulvatunyou, Marko Vujasinovic, Nenad Ivezic
To efficiently assemble manufacturing supply chains, manufacturers need to provide precise and easily accessible their manufacturing service capability (MSC) information described in the form of MSC descriptions. However, a number of challenges exist in

Development of a Quantum-Voltage-Calibrated Noise Thermometer at NIM

September 11, 2013
Author(s)
Jifeng Qu, Samuel Benz, Jianqiang Zhang, Horst Rogalla, Yang Fu, Alessio Pollarolo, Jintao Zhang
A quantum-voltage-calibrated Johnson-noise thermometer was developed at NIM, which measures the Boltzmann constant k through comparing the thermal noise across a 100  sense resistor at the temperature of the triple point water to the comb-like voltage

Generalized Tabletop EUV Coherent Diffractive Imaging in a Transmission Geometry

September 11, 2013
Author(s)
Justin M. Shaw, Bosheng Zhang, Matthew Seaberg, Daniel Adams, Dennis Gardner, Elizabeth Shanblatt, Henry C. Kapteyn, Margaret M. Murnane
We demonstrate the first generalized tabletop EUV coherent microscope that can image extended, non-isolated, non-periodic, objects. By implementing keyhole coherent diffraction imaging with curved mirrors and a tabletop high harmonic source, we demonstrate

Johnson-noise thermometry based on a quantized-voltage noise source at NIST

September 11, 2013
Author(s)
Alessio Pollarolo, Tae H. Jeong, Samuel Benz, Paul Dresselhaus, Horst Rogalla, Weston L. Tew
Johnson Noise Thermometry is an electronic approach to measuring temperature. For several years, NIST has been developing a switching-correlator-type Johnson-noise thermometer that uses a quantized voltage noise source as an accurate voltage reference

Updated Uncertainty Budgets For NIST Thermocouple Calibrations

September 11, 2013
Author(s)
Christopher W. Meyer, Karen M. Garrity
We have recently updated the uncertainty budgets for calibrations in the NIST Thermocouple Calibration Laboratory. The purpose for the updates has been to 1) revise the estimated values of the relevant uncertainty elements to reflect the current

Time-resolved surface infrared spectroscopy during atomic layer deposition

September 10, 2013
Author(s)
Brent A. Sperling, John J. Hoang, William A. Kimes, James E. Maslar
This work presents a novel method for obtaining surface infrared spectra with sub-second time resolution during atomic layer deposition (ALD). Using a rapid-scan Fourier transform infrared (FT-IR) spectrometer, we obtain a series of interferograms (120 ms)

High-performance free-space photonic links for frequency/time transfer

September 8, 2013
Author(s)
Nathan R. Newbury, Fabrizio R. Giorgetta, William C. Swann, Laura C. Sinclair, Esther Baumann, Ian R. Coddington
We discuss optical two-way time and frequency transfer over air to connect remote optical clocks/oscillators. This method can link remote sites with a residual timing noise of femtoseconds and a residual fractional accuracy below 10^-18.

A Study of the Diurnal in the Transatlantic TWSTFT Difference

September 7, 2013
Author(s)
Victor S. Zhang, Thomas E. Parker
The daily variation (diurnal) in the two-way satellite time and frequency transfer (TWSTFT) difference is one of the most significant instabilities of the TWSTFT technique. The diurnal comes from the daily delay change of the TWSTFT signal paths. In recent

Holographic Radius Test Plates

September 7, 2013
Author(s)
Quandou (. Wang, Johannes A. Soons, Ulf Griesmann
We evaluate a method for testing the radius of spheres with a hologram that consists of a pair of nested Fresnel zone lenses. The hologram is positioned in the collimated test beam of a Fizeau interferometer. The inner zone lens generates a focus at the

Crystalline domain size and faulting in the new NIST SRM 1979 zinc oxide

September 6, 2013
Author(s)
James P. Cline, David R. Black, Albert Henins, John E. Bonevich, Whitfield S. Pam, Paolo Scardi, Matteo Leoni
A NIST SRM certified to address the issue of crystallite size measurement through a line profile analysis has been under development for several years. In order to prepare the feedstock for the SRM, nano-crystalline zinc oxide was produced from thermal

Improvement of Quality in Publication of Experimental Thermophysical Property Data: Challenges, Assessment Tools, Global Implementation, and Online Support

September 6, 2013
Author(s)
Robert D. Chirico, Michael D. Frenkel, Joe W. Magee, Vladimir Diky, Chris D. Muzny, Andrei F. Kazakov, Kenneth G. Kroenlein, Ilmutdin M. Abdulagatov, William E. Acree, Jr., Joan F. Brennecke, Paul L. Brown, Peter T. Cummings, Theodoor W. de Loos, Daniel G. Friend, Anthony R. Goodwin, Lee D. Hansen, William M. Haynes, Nobuyoshi Koga, Andreas Mandelis, K N. Marsh, Paul M. Mathias, Clare McCabe, O'Connell J. P., Agilio Padua, Vicente Rives, Christoph Schick, Martin P. Trusler, Sergey Vyazovkin, Ron D. Weir, Jiangtao Wu
This article describes a 10-year cooperative effort between the U. S. National Institute of Standards and Technology (NIST) and five major journals in the field of thermophysical and thermochemical properties to improve the quality of published reports of

Fourier Domain Optical Tool Normalization for Quantitative Parametric Image Reconstruction

September 5, 2013
Author(s)
Jing Qin, Richard M. Silver, Bryan M. Barnes, Hui Zhou, Francois R. Goasmat
There has been much recent work in developing advanced optical metrology methods that use imaging optics for critical dimension measurements and defect detection. Sensitivity to nanometer scale changes has been observed when measuring critical dimensions

Functionalization-Dependent Induction of Cellular Survival Pathways by CdSe Quantum Dots in Primary Normal Human Bronchial Epithelial Cells

September 5, 2013
Author(s)
Amber Nagy, Jennifer A. Hollingsworth, Bin Hu, Andrea Steinbruck, Peter C. Stark, Cristina Rios Valdez, Momchilo Vuyisich, Michael H. Stewart, Donald H. Atha, Bryant C. Nelson, Rashi Iyer
Quantum dots (QDs) are semiconductor nanocrystals exhibiting unique optical properties which can be exploited for many practical applications ranging from photovoltaics to biomedical imaging and drug delivery. They are increasingly manufactured in large
Displaying 20751 - 20775 of 73751
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