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Displaying 14976 - 15000 of 17286

Enabling Robot Agility in Manufacturing Kitting Applications

March 14, 2018
Author(s)
Zeid Kootbally, Craig I. Schlenoff, Brian Antonishek, Frederick M. Proctor, Thomas Kramer, William Harrison, Satyandra K. Gupta
… that are being developed at the National Institute of Standards and Technology (NIST) in conjunction with outside …

Quantification of DNA/SWCNT Solvation Differences by Aqueous Two Phase Separation

January 8, 2018
Author(s)
Ming Zheng, Yoona Yang, Akshaya Shankar, Thibault Aryaksama, Anand Jagota
Single wall carbon nanotubes (SWCNTs) coated with single-stranded DNA can be effectively separated into various chiralities using an aqueous two phase (ATP) system. Partitioning is driven by small differences in the dissolution characteristics of the

Measurements of the Newtonian Constant of Gravitation, G

November 30, 2017
Author(s)
Christian Rothleitner, Stephan Schlamminger
The Newtonian Constant of Gravitation G seems to be the fundamental constant that is most difficult to measure accurately. In the past three decades more than a dozen precision measurements were performed. Unfortunately the scatter of the data points is

Cell-based refractometer for pascal realization

July 24, 2017
Author(s)
Patrick F. Egan, Jack A. Stone Jr., Jacob E. Ricker, Jay H. Hendricks, Gregory F. Strouse
We describe a method for determining density of helium via measurements of optical refractivity. In combination with the equation of state, this allows realization of the pascal. Our apparatus is based on the integration of a gas triple-cell into a quasi

Developing a capability-based similarity metric for manufacturing processes

June 7, 2017
Author(s)
Kevin Li, William Z. Bernstein
Manufacturing taxonomies and accompanying metadata of manufacturing processes have been catalogued in both reference books and databases online. However, such information remains in a form that is uninformative to the various stages of the product life

Assessment of Powder Characterization Methods for Advanced Ceramics

February 19, 2017
Author(s)
Lin-Sien H. Lum
This report summarizes the results of an international round robin study on advanced ceramic powders. Thirty-four laboratories from Belgium, Germany, Japan, Sweden and the U.S. representing industrial, academic and government research organizations

Compact 2.2 K Cooling System for Superconducting Nanowire Single Photon Detectors

January 25, 2017
Author(s)
Vincent Y. Kotsubo, Ray Radebaugh, Sae Woo Nam, Joel N. Ullom, Brandon L. Wilson, Paul Hendershott, Micheal Bonczyski
We are developing a compact, low power, closed cycle cooling system for Superconducting Nanowire Single Photon Detectors. The base temperature of the present prototype, which uses a helium-4 Joule-Thomson stage, is 2.2 K with over 1.2 mW of cooling. This

Vector-Network-Analyzer Calibration Using Line and Multiple Coplanar-Waveguide Offset Reflects

December 9, 2016
Author(s)
Arkadiusz C. Lewandowski, Wojciech Wiatr, Dazhen Gu, Nate Orloff, Thomas Mitchell (Mitch) Wallis, Pavel Kabos
We present the application of our newly developed multi-reflect-thru technique to vector-network-analyzer calibration in the on-wafer environment. This technique uses a set of highly-reflective one-port devices, referred to as offset-reflects, and a single

Distributed Control and Communications for Grid Systems

December 5, 2016
Author(s)
Hamid Gharavi
A major problem of the grid system is identifying the source of abnormal behaviors. It is particularly important to identify the areas in which the grid system suffers from power deficiencies due to fault or voltage instability. Phasor Measurement Units

An Open Web-Based Repository for Capturing Manufacturing Process Information

December 1, 2016
Author(s)
William Z. Bernstein, Mahesh Mani, Katherine C. Morris, Kevin W. Lyons, Bjoern J. Johansson
With recent progress in developing more effective models for representing manufacturing processes, this paper presents an approach towards an open web-based repository for storing manufacturing process information. The repository is envisioned to include

Refractive index measurements of Ge

October 20, 2016
Author(s)
John H. Burnett, Simon G. Kaplan
A program has been started at NIST to make high-accuracy measurements of the infrared (IR) index properties of technologically important IR materials, in order to provide the IR optics community with updated values for the highest-quality materials now

Intelligent Building Agents Laboratory: Hydronic System Design

September 29, 2016
Author(s)
Amanda J. Pertzborn
Achieving national goals of net zero energy buildings requires substantial reduction in the energy consumption of commercial building systems. In 2015, commercial buildings consumed 18 % of the total energy consumed in the U.S. [1]. Although significant
Displaying 14976 - 15000 of 17286
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