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NIST Authors in Bold

Displaying 15751 - 15775 of 73893

Design, sensitivity analysis, and testing of a Caenorhabditis elegans nanoecotoxicity assay

August 11, 2016
Author(s)
Shannon Hanna, Gregory A. Cooksey, Bryant C. Nelson, John T. Elliott, Elijah J. Petersen
Increasing production and usage of engineered nanomaterials (ENMs) has generated widespread interest in measuring their environmental and human health effects. However, the lack of standardized methods for these measurements has often led to contradictory

Interlaboratory Study of an Alternate Substrate for Use in ASTM E 2187

August 11, 2016
Author(s)
Richard G. Gann, Morgan Bruns, Edward J. Hnetkovsky, William F. Guthrie
ASTM E 2187 has become the internationally referenced standard for designing and specifying less fire-prone cigarettes. In this test method, a lit cigarette is laid on multiple layers of filter paper, and the observer identifies whether the cigarette burns

Key Recovery Attack on Cubic Simple Matrix Encryption

August 11, 2016
Author(s)
Ray Perlner, Dustin Moody, Daniel Smith-Tone
In the last few years multivariate public key cryptography has experienced an infusion of new ideas for encryption. Among these new strategies is the ABC Simple Matrix family of encryption schemes which utilize the structure of a large matrix algebra to

Microwave Radiometry of Blackbody Radiation

August 11, 2016
Author(s)
Dazhen Gu
We outline the theoretical formulation of radiometry of the free-space radiation emitted by a blackbody target. Simulation shows a much smaller drop of radiation intensity of a Lambertian source than that of an incoherent source in the near-field region

Standard Operation Procedures (SOPs) for the Palla VM-KT Vibrating Cryomill: Production of Fresh Frozen Standard Reference and Control Materials (SRMs/CMs) at the NIST Reference Material Production Facility

August 11, 2016
Author(s)
Amanda J. Moors, Rebecca S. Pugh, Jody R. Evans, Jennifer M. Ness, Debra L. Ellisor, Melannie J. Bachman
The NIST Reference Materials Production (RMP) Facility at the Hollings Marine Laboratory produces fresh, frozen powder materials which are used as Standard Reference Materials (SRMs) and Control Materials (CMs) from frozen biological, environmental

Using Design of Experiments in Finite Element Modeling to Identify Critical Variables in Laser Powder Bed Fusion

August 11, 2016
Author(s)
Li Ma, Jeffrey T. Fong, Brandon Lane, Shawn P. Moylan, James J. Filliben, N. Alan Heckert, Lyle E. Levine
In Laser Powder Bed Fusion (L-PBF) Finite Element Analysis (FEA), input of accurate material and simulation parameters is critical for accurate predictions. It is challenging and expensive to measure and control all possible material properties and process

Computer Security Division 2015 Annual Report

August 10, 2016
Author(s)
Patrick D. O'Reilly, Gregory A. Witte, Larry Feldman
Title III of the E-Government Act of 2002, entitled the Federal Information Security Management Act (FISMA) of 2002, requires NIST to prepare an annual public report on activities undertaken in the previous year, and planned for the coming year, to carry

Computer-Aided Molecular Design and Selection of CO2 Capture Solvents Based on Thermodynamics, Reactivity and Sustainability

August 10, 2016
Author(s)
Alexandros Chremos, Athanasios Papadopoulos, Sara Badr, Esther Forte, Theodoros Zarogiannis, Panos Seferlis, Stavros Papadokonstantakis, Amparo Galindo, George Jackson, Claire Adjiman
The identification of improved carbon dioxide (CO2) capture solvents remains a challenge due to the vast number of potentially-suitable molecules. We propose an optimization-based computer- aided molecular design (CAMD) method to identify and select, from

Design, Developments, and Results from the NIST Additive Manufacturing Metrology Testbed (AMMT)

August 10, 2016
Author(s)
Brandon M. Lane, Sergey Mekhontsev, Steven E. Grantham, Mihaela Vlasea, Justin G. Whiting, Ho Yeung, Jason C. Fox, Clarence J. Zarobila, Jorge E. Neira, Michael L. McGlauflin, Leonard M. Hanssen, Shawn P. Moylan, M A. Donmez, Joseph P. Rice
NIST is developing a facility titled the Additive Manufacturing Metrology Testbed that will enable advanced research into monitoring, controls, process development, and temperature measurement for laser powder bed fusion additive manufacturing and similar

Development of a NIST WR10 Radiometer

August 10, 2016
Author(s)
Jack T. Surek, Dazhen Gu, Dave K. Walker
— This paper describes the development of a waveguide radiometer to measure noise from millimeter wave electronic components across the full WR10 band from 75 GHz to 110 GHz. DUT noise temperature is estimated based on comparison with room temperature and

NIST Updates Personal Identity Verification (PIV) Guidelines

August 10, 2016
Author(s)
Hildegard Ferraiolo, Larry Feldman, Gregory A. Witte
This bulletin summarized the information presented in NIST SP 800-156: Derived PIV Application and Data Model Test Guidelines and NIST SP 800-166: Representation of PIV Chain-of-Trust for Import and Export. These publications support Federal Information

A comprehensive Doppler error budget for next generation, extreme precision spectrometers

August 9, 2016
Author(s)
Ryan C. Terrien, Samuel Halverson, Suvrath Mahadevan, Arpita Roy, Chad Bender, Guomundur K. Stefansson, Andrew Monson, Eric Levi, Fred Hearty, Cullen Blake, Michael McElwain, Christian Schwab, Lawrence Ramsey, Jason Wright, Sharon Wang, Qian Gong, Paul Robertson
We describe a detailed radial velocity error budget for the NASA-NSF Extreme Precision Doppler Spectrometer instrument concept NEID (NN-explore Exoplanet Investigations with Doppler spectroscopy). Such an instrument performance budget is a necessity for

Energy Bandgap and Edge States in an Epitaxially Grown Graphene/h-BN Heterostructure

August 9, 2016
Author(s)
Beomyong Hwang, Hwang Jeongwoon, Jong K. Yoon, Sungjun Lim, Sungmin Kim, Minjun Lee, Jeong H. Kwon, Hongwoo Baek, Dongchul Sung, Gunn Kim, Suklyun Hong, Jisson Ihm, Joseph A. Stroscio, Young Kuk
Securing a stable bandgap is an essential requirement for applications of graphene layers in switching devices. Theoretical studies have suggested creating a bulk bandgap and modified edge states with an asymmetry between the A and B sub-lattice sites of

Laser Path Planning and Power Control Strategies for Powder Bed Fusion Systems

August 9, 2016
Author(s)
Ho Yeung, Jorge Neira, Brandon Lane, Jason Fox, Felipe F. Lopez
In laser powder bed fusion additive manufacturing process, laser scan path, velocity, and power are some of the most important parameters affecting the build quality. Control strategies for laser path and power are implemented and tested on a prototype

Reference Correlations of the Thermal Conductivity of Ethylene and Propylene

August 9, 2016
Author(s)
A. Koutian, Marc J. Assael, Marcia L. Huber, Richard A. Perkins
New, wide-range reference equations for the thermal conductivity of ethylene and propylene as a function of temperature and density are presented. The equations are based in part upon a body of experimental data that has been critically assessed for

Structure of Polyelectrolyte Brushes in the Presence of Multivalent Counterions

August 9, 2016
Author(s)
Jing Yu, Jun Mao, Guangcui Yuan, Sushil K. Satija, Zhang Jiang, Wei Chen, Matthew Tirrell
Polyelectrolyte brushes are of great importance to a wide range of fields, ranging from colloidal stabilization to responsive and tunable materials to lubrication. We synthesized high-density polystyrene sulfonate (PSS) brushes using surface force
Displaying 15751 - 15775 of 73893
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