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NIST Authors in Bold

Displaying 10976 - 11000 of 73697

Spectroscopic Compton Imaging of Prompt Gamma Emission at the MeV Energy Range

October 1, 2018
Author(s)
Haijian Chen, Huaiyu Chen-Mayer, Danyal J. Turkoglu, Benjamin Riley, Emily Draeger, jerimy Polf
Prompt gamma activation analysis (PGAA) is a bulk elemental analysis technique using gamma rays emitted immediately following neutron capture. Spatial information about the composition within the sample could be obtained with PGAA in a time-consuming

Visualizing Structural Transformation and Guest Binding in a Flexible Metal-Organic Framework under High Pressure and Room Temperature

October 1, 2018
Author(s)
Hui Yang, Feng Guo, Prem Lama, Gaurav Verma, Wen-Yang Gao, Hui Wu, Leonard J. Barbour, Wei Zhou, Jian Zhang, Briana Aguila, Shengqian Ma
Understanding effect of gas molecules on the framework structures upon gas sorption in porous materials is highly desirable for the development of gas storage and separation technologies. However, this remains challenging for flexible metal-organic

ABC's of Conformity Assessment

September 30, 2018
Author(s)
Lisa J. Carnahan, Amy L. Phelps
The Standards Coordination Office periodically publishes information related to standards and conformity assessment as a service to producers and users of such systems – both in the public and private sector. This publication is designed to provide the

Conformity Assessment Considerations for Federal Agencies

September 30, 2018
Author(s)
Lisa J. Carnahan, Amy L. Phelps
The Standards Coordination Office periodically publishes information related to standards and conformity assessment as a service. This document provides those not fully familiar with the field of conformity assessment an introduction to the complexities in

Control of thermal expansion in a low-density framework modification of silicon

September 30, 2018
Author(s)
Beekman Mathew, James A. Kaduk, Winnie Wong-Ng, George S. Nolas
The low-density clathrate-II modification of silicon, Si136, contains two distinct cage-like voids large enough to accommodate various types of guest atoms which influence both the host structure and its properties. Although the linear coefficient of

Development of a Detection Algorithm for Kitchen Cooktop Ignition Prevention

September 30, 2018
Author(s)
Amy Mensch, Anthony Hamins, Kathryn Markell
A small number of previous studies focused on cooktop fire sources and considered multi-detector sensing of pre-ignition signatures in a kitchen environment. Johnsson conducted a series of experiments investigating the feasibility of distinguishing between

Microscopic Identification of Micro-Organisms on Pre-Viking Swedish Hillfort Glass

September 30, 2018
Author(s)
Bruce Arey, Edward Vicenzi, Rolf Sjoblom, Robert Koestler, Paula DePriest, Thomas Lam, David Peeler, John McCloy, Albert Kruger, Jamie Weaver
Borborg Hillfort is a vitrified hillfort located in the Husby-Långhundra parish in Uppland Sweden (Fig. 1A). The site dates to the Great Migration Period, around 740 ± 100 CE. [1]. Two types of glasses have been identified within the ramparts – one that is

Development of a new reversed-phase liquid chromatography and fluorescence method with multichannel selective wavelength detection for the analysis of benzo[a]pyrene and six of its isomers

September 28, 2018
Author(s)
Walter B. Wilson, Stephen A. Wise, Lane C. Sander
The baseline separation of benzo[a]pyrene in complex samples via reversed-phase liquid chromatography (RPLC) is particularly challenging due to the potential for interferences from other molecular mass 252 (MM, g/mol) polycyclic aromatic hydrocarbons (PAHs

A Computable General Equilibrium Model of Cedar Rapids

September 27, 2018
Author(s)
Jennifer Helgeson, Juan Fung, Cheyney O'Fallon, David Webb, Harvey Cutler
This report presents the development of a Computable General Equilibrium (CGE) model for the regional economy of Cedar Rapids, Iowa. The general approach that this case study takes is outlined in Helgeson et al. [1] as a method to quantify the net co

Intelligent Building Agents Laboratory: Air System Design

September 27, 2018
Author(s)
Amanda J. Pertzborn, Daniel A. Veronica
The National Institute of Standards and Technology has constructed the Intelligent Building Agents Laboratory (IBAL) to demonstrate the potential for distributed, intelligent software agents to optimize the control of heating, ventilation, and air

Nondestructive shape process monitoring of three-dimensional high aspect ratio targets using through-focus scanning optical microscopy Optical Microscopy

September 27, 2018
Author(s)
Ravikiran Attota, Hyeonggon Kang, Keana C. Scott, Richard A. Allen, Andras Vladar, Bunday Benjamin
Low-cost, high-throughput and nondestructive metrology of truly three-dimensional (3-D) targets for process control/monitoring is a critically needed enabling technology for high-volume manufacturing (HVM) of nano/micro technologies in multi-disciplinary

2018 Rapid DNA Maturity Assessment Results

September 26, 2018
Author(s)
Erica L. Romsos, Peter Vallone
The Rapid DNA Act, which amends the DNA Identification Act of 1994, allows for the integration of rapid DNA instruments for use by law enforcement for DNA testing of arrestees in a booking station environment. Several parallel efforts have been made to

Electronic Structure, Pore Size Distribution, and Sorption Characterization of an unusual MOF, {[Ni(dpbz)][Ni(CN)4]}n, dpbz=1,4-bis(4-pyridyl)benzene

September 26, 2018
Author(s)
Winnie K. Wong-Ng, Izaak Williamson, Daniel W. Siderius, Jeffrey T. Culp, Yu-Sheng Chen, Lan Li, Matthew Lawson
The monoclinic (Ni(L)[Ni(CN)4] (L= 1,4-Bis(4-pyridyl) benzene) compound (nick-name Ni-dpbz) is a flexible metal organic framework (MOF) which assumes a pillared structure with layers defined by 2D Ni[Ni(CN)4]n nets and dpbz ligands as pillars. The

Interface-generated spin currents

September 26, 2018
Author(s)
Vivek P. Amin, Jan Zemen, Mark D. Stiles
Transport calculations based on ab-initio band structures reveal large interface-generated spin currents at Co/Pt, Co/Cu, and Pt/Cu interfaces. These spin currents are driven by in-plane electric fields but flow out-of-plane, and can have similar strengths

Invited Article: Advances in Tunable Laser-based Radiometric Calibration Applications at the National Institute of Standards and Technology, USA

September 26, 2018
Author(s)
John T. Woodward IV, Ping-Shine Shaw, Howard Yoon, Yuqin Zong, Steven W. Brown, Keith R. Lykke
Recent developments at the National Institute of Standards and Technology's facility for Spectral Irradiance and Radiance responsivity Calibrations using Uniform Sources (SIRCUS) are presented. The facility is predicated on the use of broadly tunable

Optical lattice with torus topology

September 26, 2018
Author(s)
Hwanmun Kim, Guanyu Zhu, James V. Porto, Mohammad Hafezi
We propose an experimental scheme to construct an optical lattice where the atoms are confined to the surface of a torus. This construction can be realized with spatially shaped laser beams which could be realized with recently developed high resolution

Reversible Flat to Rippling Phase Transition in Fe Containing Layered Battery Electrode Materials

September 26, 2018
Author(s)
Xi Chen, Sooyeon Hwang, Robin Chisnell, Yichao Wang, Fan Wu, Sooran Kim, Jeffrey W. Lynn, Dong Su, Xin Li
The Jahn-Teller effect in solid-state chemistry relates the symmetry of electronic configuration to the atomic arrangement around the individual transition metal ion. The collective behavior of many such Jahn-Teller active entities is of great interest in
Displaying 10976 - 11000 of 73697
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