An official website of the United States government
Here’s how you know
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.
Daniel I. Genin, Vladimir Marbukh, Anastase Nakassis
This paper reports on work in progress on assessing and mitigating selfish routing vulnerability to strategic attacks. We explain mechanisms leading to this...
Bodt Bodt, Richard Camden, Harry A. Scott, Adam S. Jacoff, Tsai H. Hong, Tommy Chang, Richard J. Norcross, Anthony Downs, Ann Virts
The Army Research Laboratory (ARL) Robotics Collaborative Technology Alliance (CTA) conducted an assessment and evaluation of multiple algorithms for real-time...
David A. Yashar, Janusz Wojusiak, Kenneth Kaufman, Piotr A. Domanski
The efficiency of a vapor compression system is strongly influenced by the performance of the finned-tube heat exchangers it employs. Heat exchanger performance...
Nanying Yang, Tam H. Duong, Jeong-O Jeong, Jose M. Ortiz, Allen R. Hefner Jr., Kathleen Meehan
This paper presents an automated parameter extraction software tool developed for constructing Silicon (Si) and Silicon Carbide (SiC) power diode models, which...
Ronnie R. Fesperman Jr., M A. Donmez, Shawn P. Moylan
Many new emerging applications of nanotechnologies require the use of compact precision linear translation stages that have positioning resolution on the order...
David T. Butry, Jeffrey P. Prestemon, Karen L. Abt
Public outreach and wildfire education activities have been shown to limit the number of unintentional human-caused ignitions (i.e., accidental wildfires). Such...
In atomic force microscopy (AFM)-based techniques, material information (topography, mechanical, electrical, magnetic, etc.) is retrieved from the nanoscale...
Calibration of vibration transducers requires sinusoidal motion over a wide frequency range with low distortion and low cross-axial motion. Piezoelectric...
Piezoelectric shakers have been developed and used at NIST for decades for high-frequency calibration of accelerometers. Recently, NIST researchers built new...
Three films containing different mass fractions (0 %, 5 % and 10 %) of silica (SiO2) nanoparticles have been subjected to controlled degradation conditions at...
This paper develops a novel 3D shape retrieval method, which uses Bag-of-Features and an efficient multi-view shape matching scheme. In our approach, a properly...
Authentication assurance level taxonomies that have been specified in many real-world smart identity token deployments do not fully reflect all the security...
Nathan A. Tomlin, John H. Lehman, Katherine E. Hurst, D. B. Tanner, K. Kamaras, Aron Pekker
We have demonstrated a novel method to determine optical properties of opaque or semi-transparent films for photovoltaic (PV) applications. Such films may be...
Kristine A. Bertness, John B. Schlager, Norman A. Sanford, Atif A. Imtiaz, Thomas M. Wallis, Joel C. Weber, Pavel Kabos, Lorelle M. Mansfield
We demonstrate that near field scanning microwave microscopy (NSMM) can be used to detect photoresponse in photovoltaic materials with potential for...
The space charge limited current (SCLC) effect will be analyzed in undoped crystalline silicon wafers at high injection levels. Space charge limited currents...
James R. Baker-Jarvis, Michael D. Janezic, Billy F. Riddle, Kim Sung
In this project we study the behavior of the permittivity and loss tangent of a class of materials that exhibit relaxation. For relaxation response we show that...
This paper describes a simulation program that was developed to compare the uncertainties that would be expected with different measurement strategies for the...
Randall J. McDermott, Glenn P. Forney, Kevin B. McGrattan, William E. Mell
The Fire Dynamics Simulator (FDS) and Smokeview (SMV) are computational and visualization tools specifically designed for large-eddy simulations (LES) of low...
Biometrics is an umbrella term for methods that identify an individual based on physiological and/or behavioral characteristics such as fingerprint, face, iris...
Steve M. Gwynne, Erica D. Kuligowski, Daniel Nilsson
When using engineering tools to calculate RSET, the engineer must have sufficient expertise to identify actual human factors that will influence the outcome of...
Test collections are a mainstay of information retrieval research. Since the 1990s, large reusable test collections have been developed in the context of...
Ian R. Coddington, William C. Swann, Nathan R. Newbury
Coherent dual comb spectroscopy can harness many inherent strengths of frequency combs to provide high-resolution, high-accuracy measurements of a sample...
Fabrizio R. Giorgetta, Ian R. Coddington, Esther Baumann, William C. Swann, Nathan R. Newbury
Frequency combs provide broadband spectroscopic measurements with high frequency accuracy and precision. However, because the comb power is distributed over a...
Xiaohong Gu, Guodong Chen, Minhua Zhao, Stephanie S. Watson, Paul E. Stutzman, Tinh Nguyen, Joannie W. Chin, Jonathan W. Martin
The objective of this study is to investigate the role of ZnO nanoparticles in the life cycle of a waterborne polyurethane (PU) nanocomposite during UV exposure...
Nathalie Yarkony, Kamran Sayrafian, Antonio Possolo
Energy Harvesting (EH) refers to the process of capturing and storing energy from external sources or ambient environment. Kinetic energy harvested from the...
Ronald G. Dixson, Donald Chernoff, Shihua Wang, Theodore V. Vorburger, Ndubuisi G. Orji, Siew-Leng Tan, Joseph Fu
The National Institute of Standards and Technology (NIST), Advanced Surface Microscopy (ASM), and the National Metrology Centre (NMC) of the Agency for Science...