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Search Publications

NIST Authors in Bold

Displaying 14626 - 14650 of 17285

Superconducting optoelectronic networks IV: transmitter circuits

May 9, 2018
Author(s)
Jeffrey M. Shainline, Adam N. McCaughan, Sonia M. Buckley, Richard P. Mirin, Sae Woo Nam, Amir Jafari-Salim
A superconducting optoelectronic neuron will produce a small current pulse upon reaching threshold. We present an amplifier chain which converts this small current pulse to a voltage pulse sufficient to produce light from a semiconductor diode. This light

Progress on Optical-clock-based Time Scale at NIST: Simulations and Preliminary Real-Data Analysis

April 20, 2018
Author(s)
Jian Yao, Jeffrey A. Sherman, Tara M. Fortier, Thomas E. Parker, Judah Levine, Joshua J. Savory, Stefania Romisch, William F. McGrew, Robert J. Fasano, Stefan A. Schaeffer, Kyle P. Beloy, Andrew D. Ludlow
This paper shows the recent NIST work on incorporating an optical clock into a time scale. We simulate a time scale composed of continuously-operating commercial hydrogen masers and an optical frequency standard that does not operate continuously as a

Incorporating an Optical Clock into a Time Scale at NIST: Simulations and Preliminary Real-Data Analysis

March 29, 2018
Author(s)
Jian Yao, Jeffrey A. Sherman, Tara M. Fortier, Thomas E. Parker, Judah Levine, Joshua J. Savory, Stefania Romisch, William F. McGrew, Robert J. Fasano, Stefan A. Schaeffer, Kyle P. Beloy, Andrew D. Ludlow
This paper shows the recent NIST work on incorporating an optical clock into a time scale. We simulate a time scale composed of continuously-operating commercial hydrogen masers and an optical frequency standard that does not operate continuously as a

Development of Orthogonal NISTmAb Size Heterogeneity Control Methods

February 10, 2018
Author(s)
Abigail Turner, Katharina S. Yandrofski, Srivalli Telikepalli, N. Alan Heckert, James J. Filliben, Dean C. Ripple, John E. Schiel
… antibody reference material from the National Institute of Standards and Technology; it is a class-representative IgG1κ …

Enhanced Transmission Algorithm for Dynamic Device-to-Device Direct Discovery

January 12, 2018
Author(s)
Aziza Ben Mosbah, David W. Griffith, Richard A. Rouil
In order to support the increasing demand for capacity in cellular networks, Long Term Evolution (LTE) introduced Proximity Services (ProSe) enabling Device-to-Device (D2D) communications, defining several services to support such networks. We are

Estimating and Correcting the Device-Under-Test Transfer Function in Loaded Reverberation Chambers for Over-the-Air Tests

December 1, 2017
Author(s)
Catherine A. Remley, Ryan J. Pirkl, Chih-Ming Wang, Damir Senic, Arvand Homer, Matt V. North, Maria G. Becker, Robert D. Horansky, Christopher L. Holloway
We assess the potential error in measurements of the power transfer function corresponding to a reverberation chamber set-up when different antenna types are used for the reference and DUT measurements. We derive a mathematical description of the transfer

Quantitative Fluorescence Measurements with Multicolor Flow Cytometry

November 20, 2017
Author(s)
Lili Wang, Adolfas K. Gaigalas, James Wood
Multicolor flow cytometer assays are routinely used in clinical laboratories for immunophenotyping, monitoring disease and treatment, and determining prognostic factors. However, existing methods for quantitative measurements have not yet produced

Valley blockade in a silicon double quantum dot

November 13, 2017
Author(s)
Justin K. Perron, Michael Gullans, Jacob Taylor, Michael Stewart, Neil M. Zimmerman
Electrical transport in double quantum dots (DQD) is useful for illuminating many interesting aspects of the carrier states in quantum dots. Here we show data comparing bias triangles (i.e., regions of allowed current in DQDs) at positive and negative bias

Studying Water and Solute Transport through Desalination Membranes via Neutron Radiography

October 25, 2017
Author(s)
Devin L. Shaffer, Jacob M. LaManna, David L. Jacobson, Daniel S. Hussey, Menachem Elimelech, Edwin P. Chan
Neutron radiography, a non-destructive imaging technique, is applied to study water and solute transport through desalination membranes. Specifically, we use neutron radiography to quantify lithium chloride draw solute concentrations across a thin-film

STEP File Analyzer User's Guide (Version 4)

August 17, 2017
Author(s)
Robert R. Lipman
This guide describes how to use the STEP File Analyzer, a software tool that analyzes and generates a spreadsheet or a set of CSV (comma-separated value) files from a STEP (STandard for the Exchange of Product model data) file. The spreadsheets simplify

Noise Refocusing in a Five-blade Neutron Interferometer

August 1, 2017
Author(s)
Michael G. Huber, Muhammad D. Arif, Dimitry A. Pushin, David G. Cory, Dusan Sarenac, Joachim Nsofini, Kamyar Ghofrani
We provide a quantum information description of a proposed five-blade neutron interferometer geometry and show that it is robust against low-frequency mechanical vibrations and dephasing due to the dynamical phase. The extent to which the dynamical phase

PROCEDURE FOR DEVELOPING KEY PERFORMANCE INDICATORS FOR SUSTAINABLE MANUFACTURING

June 8, 2017
Author(s)
Shaw C. Feng, Deogratias Kibira, Michael P. Brundage, Katherine C. Morris
The need for an open, inclusive, and neutral procedure for developing key performance indicators (KPIs) has been increasing as manufacturers seek to determine what to measure in order to improve environmental sustainability of their products and

High-brightness Cs focused ion beam from a cold-atomic-beam ion source

May 2, 2017
Author(s)
Adam V. Steele, Andrew Schwarzkopf, Jabez J. McClelland, Brenton Knuffman
We present measurements of focal spot size and brightness in a focused ion beam system utilizing a laser-cooled atomic beam source of Cs ions. Spot sizes as small as (2.1 ± 0.2) nm (one standard deviation) and brightness values as high as (1.3 ± 0.1) x 107

Magnetic field imaging with microfabricated optically-pumped magnetometers

March 28, 2017
Author(s)
Orang Alem, Rahul Mhaskar, Ricardo Jimenez-Martinez, Dong Sheng, John LeBlanc, Lutz Trahms, Tilman Sander, Svenja A. Knappe
A multichannel imaging system is presented, consisting of 25 microfabricated optically-pumped magnetometers. The sensor probes have a footprint of less than 1 cm2 and a sensitive volume of (1.5 mm)3. They are connected to a control unit through optical

Fabrication of Scanning Electrochemical Microscopy-Atomic Force Microscopy (SECM-AFM) Probes to Image Surface Topography and Reactivity at the Nanoscale

January 27, 2017
Author(s)
Jeyavel Velmurugan, Amit K. Agrawal, Sang M. An, Eric A. Choudhary, Veronika A. Szalai
Electrocatalysts, used in energy applications, rely on the solid-liquid interface to carry out productive chemistry. This interface is generally less amenable to standard surface-science characterization methods, making the investigation of the surface
Displaying 14626 - 14650 of 17285
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