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NIST Authors in Bold

Displaying 6351 - 6375 of 74129

Interoperability Assessment 2019: Contactless-to-Contact Fingerprint Capture

May 19, 2020
Author(s)
John M. Libert, John D. Grantham, Bruce Bandini, Kenneth Ko, Shahram Orandi, Craig I. Watson
This report describes computational comparison measurements as well as match error analysis applied to fingerprint images collected by researchers of the National Institute of Standards and Technology (NIST) in May of 2019. Fingerprint images from 200

Ion transport and reordering in a two-dimensional trap array

May 19, 2020
Author(s)
Yong Wan, Robert Jordens, Stephen Erickson, Jenny Wu, Ryan S. Bowler, Ting R. Tan, Panyu Hou, Andrew C. Wilson, Dietrich Leibfried
Scaling quantum information processors is a challenging task, requiring manipulation of a large number of qubits with high fidelity and a high degree of connectivity. For trapped ions, this could be realized in a two-dimensional array of interconnected

Learning to predict crystal plasticity at the nanoscale: Deep residual networks and size effects in uniaxial compression discrete dislocation simulations

May 19, 2020
Author(s)
Zijiang Yang, Stefanos Papanikolaou, Andrew C. Reid, Wei-keng Lao, Alok Choudhary, Carelyn E. Campbell, Ankit Agrawal
The increase of dislocation density in a metallic crystal undergoing plastic deformation influences the mechanical properties of the material. This effect can be used to examine the related inverse problem of deducing the prior deformation of a material

Polymer Dynamics in Block Copolymer Electrolytes Detected by Neutron Spin Echo

May 19, 2020
Author(s)
Whitney S. Loo, Antonio Faraone, Lorena S. Grundy, Kevin W. Gao, Nitash P. Balsara
Polymer chain dynamics of a nanostructured block copolymer electrolyte are investigated by neutron spin-echo spectroscopy. Monomeric friction, determined by fitting the short-time data to the Rouse model, increases with increasing salt concentration. Tube

SATE VI Ockham Sound Analysis Criteria

May 19, 2020
Author(s)
Paul E. Black, Kanwardeep S. Walia
Static analyzers examine the source or executable code of programs to find problems. Many static analyzers use heuristics or approximations to examine programs with millions of lines of code for hundreds of classes of problems. The Ockham Sound Analysis

Defining Actionable Rules for Verifying IOT Safety and Security

May 18, 2020
Author(s)
Kayla Ibrahim, Suryadipta Majumdar, Daniel Bastos, Anoop Singhal
Internet of Things (IoT) is being widely adopted in recent years. Security, however, has lagged behind, as evidenced by the increasing number of attacks that use IoT devices (e.g., an arson that uses a smart oven, burglary via a smart lock). Therefore, the

High-Q dark hyperbolic phonon-polaritons in hexagonal boron nitride nanostructures

May 18, 2020
Author(s)
Georg Ramer, Mohit Tuteja, Joseph R. Matson, Marcelo I. Davanco, Thomas G. Folland, Andrey Kretinin, Takashi Taniguchi, Kenji Watanabe, Kostya Novoselov, Joshua D. Caldwell, Andrea Centrone
The anisotropy of hexagonal boron nitride (hBN) crystals gives rise to hyperbolic phonon polaritons (HPhPs), notable for their volumetric frequency-dependent angular propagation and strong confinement. For frustum (truncated nanocone) structures, theory

The 2019 NIST Audio-Visual Speaker Recognition Evaluation

May 18, 2020
Author(s)
Seyed Omid Sadjadi, Craig S. Greenberg, Elliot Singer, Douglas A. Reynolds, Lisa Mason, Jaime Hernandez-Cordero
In 2019, the U.S. National Institute of Standards and Technology (NIST) conducted the most recent in an ongoing series of speaker recognition evaluations (SRE). There were two components to SRE19: 1) a leaderboard style Challenge using unexposed

The 2019 NIST Speaker Recognition Evaluation CTS Challenge

May 18, 2020
Author(s)
Seyed Omid Sadjadi, Craig S. Greenberg, Elliot Singer, Douglas Reynolds, Lisa Mason, Jaime Hernandez-Cordero
In 2019, the U.S. National Institute of Standards and Technology (NIST) conducted a leaderboard style speaker recognition challenge using conversational telephone speech (CTS) data extracted from the unexposed portion of the Call My Net 2 (CMN2) corpus

Scalable Data Pipeline Architecture to Support the Industrial Internet of Things

May 17, 2020
Author(s)
Moneer M. Helu, Timothy A. Sprock, Daniel Hartenstine, Rishabh Venketesh, William Sobel
Managing manufacturing data remains challenging despite the growth of the Industrial Internet of Things (IIoT). While various standards and technologies enable greater access to data, scaling data processing and distribution can be difficult given the

Contact resistance in organic field-effect transistors: conquering the barrier

May 15, 2020
Author(s)
Matthew Waldrip, Oana Jurchescu, David J. Gundlach, Emily Bittle
Organic semiconductors have sparked significant interest due to their inherent properties as flexible, solution processible, and chemically tunable electronic materials. In the last 10 years, the improvements in charge carrier mobility in small molecule

Correlating Magnetic Structure and Magnetotransport in Semimetal Thin Films of Eu 1-x Sm x TiO 3

May 15, 2020
Author(s)
Zach Porter, Ryan F. Need, Kaveh Ahadi, Yang Zhao, Zhijun Xu, Brian Kirby, Jeffrey W. Lynn, Susanne Stemmer, Stephen D. Wilson
We report on the evolution of the average and depth-dependent magnetic order in thin film samples of biaxially stressed and electron-doped EuTiO 3 for samples across a doping range 20 cm −3. Under an applied in-plane magnetic field, the G-type

Magnetic Properties and Electronic Origin of the Interface between Dilute Magnetic Semiconductors with Orthogonal Magnetic Anisotropy

May 15, 2020
Author(s)
Ryan F. Need, Seul-Ki Bac, Xinyu Liu, Sanghoon Lee, Brian Kirby, Margaret Dobrowolska, Jacek Kossut, Jacek K. Furdyna
Controlling changes in magnetic anisotropy across epitaxial film interfaces is an important prerequisite for many spintronic devices. For the canonical dilute magnetic semiconductor GaMnAs, magnetic anisotropy is highly tunable through strain and doping

Photocurrent detection of the orbital angular momentum of light

May 15, 2020
Author(s)
Zhurun Ji, Wenjing Liu, Sergiy Krylyuk, Xiaopeng Fan, Zhifeng Zhang, Anlian Pan, Liang Feng, Albert Davydov, Ritesh Agarwal
Utilizing the orbital angular momentum (OAM) of light is promising for increasing the bandwidth of optical communication networks. However, direct photocurrent detection of different OAM modes has not yet been demonstrated. Most studies on current

Approaches to Training Multi-Class Semantic Image Segmentation of Damage in Concrete

May 14, 2020
Author(s)
Peter Bajcsy, Steven B. Feldman, Michael P. Majurski, Kenneth A. Snyder, Mary C. Brady
This paper addresses the problem of creating a large quantity of high-quality training image segmentation masks from scanning electron microscopy (SEM) images of concrete samples that exhibit progressive amounts of degradation resulting from alkali-silica

Chemical Structure of Medium-Scale Liquid Pool Fires

May 14, 2020
Author(s)
Ryan Falkenstein-Smith, Kunhyuk Sung, Jian Chen, Anthony Hamins
This work documents a series of time-averaged local gas species measurements made throughout the centerline profile of 30 cm methanol, ethanol, and acetone pool fires steadily burning in a quiescent environment. All gas species measurements were obtained

Non-fuel Antineutrino Contributions in the High Flux Isotope Reactor

May 14, 2020
Author(s)
PROSPECT COLLABORATION, Jerome LaRosa, Hans Pieter Mumm, Svetlana Nour, Mark Tyra, Denis E. Bergeron
Reactor neutrino experiments have seen major improvements in precision in recent years. With the experimental uncertainties starting to surpass those from theory, it is important to carefully consider all sources of e in making theoretical predictions. One

NVLAP Thermal Insulation Materials

May 14, 2020
Author(s)
Timothy W. Rasinski
This handbook is intended for information and use by accredited TIM laboratories, assessors conducting onsite assessments, laboratories seeking accreditation, other laboratory accreditation systems, users of laboratory services, and others needing

Three-Magnon Bound States in the Quasi-One-Dimensional Antiferromagnet a-NaMnO 2

May 14, 2020
Author(s)
Rebecca L Dally, Alvin J. R. Heng, Anna Keselman, Mitchell M. Bordelon, Matthew B. Stone, Leon Balents, Stephen D. Wilson
Here we report on the formation of two and three magnon bound states in the quasi-one-dimensional antiferromagnet α-NaMnO 2, where the single-ion, uniaxial anisotropy inherent to the Mn 3+ ions in this material provides a binding mechanism capable of
Displaying 6351 - 6375 of 74129