Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Conferences

Assessment of Carrier Lifetimes and Surface Recombination Velocity through Spectral Measurements

May 11, 2018

Author(s)

John F. Roller, Behrang H. Hamadani

Charge carrier lifetimes and surface recombination velocities were measured on photovoltaic- grade silicon wafers using a spectral-dependent method. Narrow...

Design and Construction of Long-Span Composite Beam Specimens for Large Structural-Fire Tests

May 10, 2018

Author(s)

Selvarajah Ramesh, Lisa Choe, Matthew Hoehler, William L. Grosshandler, John L. Gross

A series of experiments is being conducted on five 12.8 m long composite floor beams at the newly-commissioned National Fire Research Laboratory at the National...

Optical Measurements of Dynamic Absorptance during High-power Laser Spot Welding

May 7, 2018

Author(s)

Brian Simonds, Jeffrey W. Sowards, Joshua A. Hadler, Boris Wilthan, Erik A. Pfeif, Jack Tanner, Chandler Harris, Paul A. Williams, John Lehman

We present precision measurements of the time-dependent absorptance during a 10 ms fiber-laser spot weld on 316L stainless steel. From these, the precise time...

Towards Evaluating Named Data Networking for the IoT: A Framework for OMNeT

May 4, 2018

Author(s)

Abdella Battou

Named Data Networking is a promising architecture for emerging Internet applications such as the Internet of Things (IoT). Many studies have already...

SiC power MOSFET gate oxide breakdown reliability Current status

May 3, 2018

Author(s)

Kin P. Cheung

SiC power MOSFET is poised to take off commercially. Gate oxide breakdown reliability is an important obstacle standing is the way. Early prediction of poor...

Spectral tuning of localized surface phonon-polariton modes in selective area epitaxy GaN nanowire arrays

May 1, 2018

Author(s)

Bryan T. Spann, J. Ryan Nolen, Matthew D. Brubaker, Thomas G. Folland, Chase T. Ellis, Joseph G. Tischler, Todd E. Harvey, Joshua D. Caldwell, Kristine A. Bertness

Polar semiconductor materials, such as GaN, InP, SiC et al., offer a basis to manufacture innovative long-wavelength photonic devices.1 Such semiconductors can...

Raman spectroscopy for dopant optimization in GaN nanowire light-emitting diodes

May 1, 2018

Author(s)

Kristine A. Bertness, Bryan T. Spann, Matthew D. Brubaker, Todd E. Harvey, Paul T. Blanchard

We apply Raman spectroscopy to optimize both n-type and p-type doping in GaN nanowire light- emitting diodes (LEDs) grown with selective epitaxy on Si(111) with...

SRM 2687a Portland Cement Clinker Development Data Analyses, and Certification

May 1, 2018

Author(s)

Paul E. Stutzman

The Standard Reference Material (SRM) clinkers are intended for use in developing and testing quantitative methods of phase analysis for portland cement and...

Improving the Representation and Conversion of Mathematical Formulae by Considering their Textual Context

May 1, 2018

Author(s)

Howard S. Cohl, Moritz Schubotz, Andre Greiner Petter, Norman Meuschke, Bela Gipp, Philipp Scharpf

Mathematical formulae represent complex semantic information in a concise form. Especially in Science, Technology, Engineering, and Mathematics, mathematical...

Resonant Pressure Sensing Using a Micromechanical Cantilever Actuated by Fringing Electrostatic Fields

April 26, 2018

Author(s)

Naftaly Krakover, Robert Ilic, Slava Krylov

We demonstrate a pressure sensing approach based on the resonant operation of a single crystal Si cantilever positioned near a flexible, pressurized membrane...

Evaluating Predictors of Congestion Collapse in Communication Networks

April 23, 2018

Author(s)

Christopher E. Dabrowski, Kevin L. Mills

Researchers model congestion in communication networks using a percolation process, where congestion spreads minimally before a critical load and expands...

Glassy-Electret Random Access Memory – A naturally Nanoscale Memory Concept

April 19, 2018

Author(s)

Jason Campbell, Pragya Shrestha, Vasileia Georgiou, D. E. Ioannou, Kin (Charles) Cheung

Self-heating is a serious issue in state-of-the-art MOSFET technology. Much efforts are currently being made to combat this problem to enable further scaling...

In Situ Neutron Transmission Bragg Edge and Synchrotron X-Ray Measurement of Strain Fields Near Fatigue Cracks Grown in Hydrogen

April 18, 2018

Author(s)

Matthew J. Connolly, Peter E. Bradley, Damian S. Lauria, Andrew J. Slifka, Elizabeth S. Drexler

The embrittlement and enhanced fatigue crack growth rate of metals in the presence of hydrogen is a long-standing problem. In an effort to determine the...

Experimental Study on Long-Span Composite Floor Beams Subject to Fire: Baseline Data at Ambient Temperature

April 17, 2018

Author(s)

Lisa Y. Choe, Selvarajah Ramesh, Matthew S. Hoehler, John L. Gross

The National Institute of Standards and Technology recently expanded its large-scale structural-fire testing capabilities in the National Fire Research...

Poster: What Proportion of Vulnerabilities can be Attributed to Ordinary Coding Errors?

April 11, 2018

Author(s)

David R. Kuhn, Mohammad Raunak, Raghu N. Kacker

The analysis reported in this poster developed from questions that arose in discussions of the Reducing Software Vulnerabilities working group, sponsored by the...

Low-GWP Refrigerants; Options and Issues

April 11, 2018

Author(s)

Piotr A. Domanski, Riccardo Brignoli, J S. Brown, Andrei F. Kazakov, Mark O. McLinden

This research explored the possibilities for refrigerants having low global warming potential (GWP) with a particular focus on high-pressure applications. The...

Stability of Steel Structures at Elevated Temperatures: A Hybrid Fire Testing Approach

April 11, 2018

Author(s)

Ana Sauca, Chao Zhang, Mina S. Seif

The response of structural systems to fire loads is typically assessed through performing standard tests under constant mechanical boundary conditions. Such...

Combinatorial Security Testing Course

April 11, 2018

Author(s)

Dimitris Simos, Yu Lei, D. Richard Kuhn, Raghu N. Kacker

Combinatorial methods have attracted attention as a means of providing strong assurance at reduced cost, but when are these methods practical and cost-effective...

A Gateway to Easily Integrate Simulation Platforms for Co-Simulation of Cyber-Physical Systems

April 10, 2018

Author(s)

Thomas P. Roth, Martin J. Burns

Cyber-physical systems (CPS) research leverages the expertise of researchers from multiple domains to engineer complex systems of interacting physical and...

Spatial Channels for Wireless Over-the-Air Measurements in Reverberation Chambers

April 9, 2018

Author(s)

Maria G. Becker, Rob Horansky, Damir Senic, Vincent T. Neylon, Kate Remley

NIST is developing a hybrid test chamber for over-the-air characterization of the next generation of wireless devices in spatial channel environments. By...

Bringing Precision to 5G Test: Activities in the U.S.

April 9, 2018

Author(s)

Catherine A. Remley, Maria G. Becker

(Workshop Abstract) The next generation (5G) network wont just deliver much faster connection and higher data capacity. It also promises to provide reliable...

Angle- and Delay-Dispersion Characteristics in a Hallway and Lobby at 60 GHz

April 9, 2018

Author(s)

Roy Sun, Peter B. Papazian, Jelena Senic, Camillo A. Gentile, Catherine A. Remley

In this paper, we present results from measurement data collected in a hallway and lobby up to 33 meters in line-of-sight and non-line-of-sight conditions. The...

The New Large Antenna Positioning System for Over-The-Air Testing at the National Institute of Standards and Technology

April 8, 2018

Author(s)

Jeffrey R. Guerrieri, David R. Novotny, Josh Gordon, Alexandra Curtin, Michael S. Allman, Kim Hassett, Quang Ton

This paper introduces the new Large Antenna Positioning System (LAPS) at the National Institute of Standards and Technology (NIST). For the last eight years...

UNCERTAINTY IN MULTI-SCALE CREEP RUPTURE LIFE MODELING AND A NEW APPROACH TO ESTIMATING FREQUENCY OF IN-SERVICE INSPECTION OF COMPONENTS AT ELEVATED TEMPERATURES (*)

April 3, 2018

Author(s)

Jeffrey T. Fong, Nathanael A. Heckert, James J. Filliben, Marvin J. Cohn

Uncertainty in modeling the creep rupture life of a full-scale component using experimental data at microscopic (Level 1), specimen (Level 2), and full-size...

Integrating Data Visualization Software with Manufacturing Facility Databases: Reference Implementation and Lessons Learned

April 3, 2018

Author(s)

William Z. Bernstein

This paper enumerates challenges and limitations faced as an open source visualization software, namely Keshif, was paired with an SQL database from the NIST...

Method for Determining the Electrical Shape of a Scanning Probe Microscope Tip

April 2, 2018

Author(s)

Joseph J. Kopanski, Malcolm Regan, Lin You

Knowledge of the actual electrical tip shape can be used to better understand electric field gradients measured with eSPMs and to determine the suitability of...

Subsurface imaging of biased structures with electrostatic force microscopy (EFM)

April 2, 2018

Author(s)

Lin You, Yaw S. Obeng, Joseph Kopanski

In subsurface imaging applications, contrast in EFM depends on the electrostatic force between the tip and sample. In the related technique, scanning Kelvin...

HFERP -- A New Multivariate Encryption Scheme

April 1, 2018

Author(s)

Yashuhiko Ikematsu, Ray Perlner, Daniel Smith-Tone, Tsuyoshi Takagi, Jeremy Vates

In 2016, Yasuda et al.presented a new multivariate encryption technique based on the Square and Rainbow primitives and utilizing the plus modifier that they...

Stress Profiling in Cold-Spray Coatings by Different Experimental Techniques: Neutron Diffraction, X-ray Diffraction and Slitting Method

April 1, 2018

Author(s)

Vladimir Luzin, Kevin Spencer, Michael R. Hill, Tao Wei, Michael Law, Thomas H. Gnaupel-Herold

The residual stress profiles in Cu and Al coatings sprayed using kinetic metallization to thickness of 2 mm have been studied. Due to specific parameters of the...

Improved Cryptanalysis of HFEv- via Projection

April 1, 2018

Author(s)

Jintai Ding, Ray Perlner, Albrecht R. Petzoldt, Daniel Smith-Tone

The HFEv- signature scheme is one of the most studied multivariate schemes and one of the major candidates for the upcoming standardization of post-quantum...

Was this page helpful?