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.
Zahra Hussaini, Pin A. Lin, Bharath N. Natarajan, Wenhui Zhu, Renu Sharma
For a large number of reaction processes such as catalysis, phase transformation, nanomaterial synthesis etc., nanoscale observations at high spatial (atomic...
Karl Stupic, Janusz H. Hankiewicz, Zbigniew Celinski, Robert E. Camley, Marek Przybylski, Jan Zukrowski, Nick Anderson, Noweir Alghamdi, Nicholas Hammelev
We investigate the use of Cu0.35Zn0.65Fe2O4 particles as temperature-dependent sensors in magnetic resonance imaging (MRI). This material has a Curie...
The crystallization of a polymer melt is characterized by dramatic structural and mechanical changes that have a significant impact on the processing conditions...
Jennifer M. Lynch, Jared M. Ragland, Amanda J. Moors, Rebecca S. Pugh, Jessica L. Reiner
Perfluorinated alkyl acids (PFAAs) have been used for more than 50 years in materials such as stain-resistant treatments for paper and clothing, lubricants, and...
Ian B. Spielman, Carlos S? de Melo, Daisuke Yamamoto
Ultracold bosons in optical lattices are one of the few systems where bosonic matter is known to exhibit strong correlations. Here, to push the frontier of our...
Albert Davydov, Sergiy Krylyuk, Payam Taheri, Kirby K. Smithe, Andrey V. Krayev, Connor S. Bailey, Hye R. Lee, Eilam Yalon, Ozgur B. Aslan, Miguel M. Rojo, Tony F. Heinz, Eric Pop
Understanding growth, grain boundaries (GBs), and defects of emerging two-dimensional (2D) materials is key to enabling their future applications. For quick...
Schrödinger cat states are fundamental quantum states with no classical analogues. Schrödinger Gedanken experiment of 1935 described a cat apparently held in a...
Vladimir I. Azarov, Alexander Kramida, M. Y. Vokhmentsev
The article describes a Java program that can be used in a user]friendly way to visually identify spectral lines observed in complex spectra with theoretically...
Measurements of plasma electric fields are essential to the advancement of plasma science and applications. Methods for non-invasive in situ measurements of...
Adrian P. Defante, Wyatt N. Vreeland, Kurt D. Benkstein, Dean C. Ripple
Nanoparticle tracking analysis (NTA) obtains particle size by analysis of particle diffusion through a time series of micrographs and particle count by a count...
In this article, we review trends in cybersecurity vulnerabilities from 2008-2015, analyze vulnerability types and distributions, and prospects for the near...
Nathan Mahynski, Jeffrey R. Errington, Vincent K. Shen
We derive an approach for extrapolating the free energy landscape of multicomponent systems in the grand canonical ensemble, obtained from flat- histogram Monte...
Kristine A. Bertness, Wenjun Li, Matthew D. Brubaker, Bryan T. Spann, Patrick Fay
Top-gated GaN nanowire MOSFETs using Al2O3 as gate oxide have been experimentally demonstrated. The fabricated devices exhibit a minimum subthreshold slope of...
Timothy Hall, Anirudha Sahoo, Robert C. Hagwood, Sarah B. Streett
In this study, we design and implement two algorithms for dynamic spectrum access (DSA) that are based on survival analysis. They use a non-parametric estimate...
Harold W. Hatch, Nathan Mahynski, Marco A. Blanco Medina, Vincent K. Shen, Sally Jiao
Virial coefficients are predicted over a large range of both temperatures and model parameter values (e.g., alchemical transformation) from an individual Mayer...
William Z. Bernstein, Arun Bala Subramaniyan, Alexander Brodsky, Ian C. Garretson, Karl Haapala, Donald E. Libes, Katherine C. Morris, Rong Pan, Vittaldas Prabhu, Arkopaul Sarkar, Arvind Shankar Raman, Zhenhua Wu
The design of manufacturing systems can see dramatic improvements through the use of digital technologies for modeling and simulation prior to deployment. At...
Effective spin-spin interactions between N + 1 qubits enable the determination of the eigenvalue of an arbitrary Pauli product of dimension N with a constant...
Melissa Singletary, Samantha Hagerty, Shinichiro N. Muramoto, Yasmine Daniels, William MacCrehan, Gheorghe Stan, June Lau, Oleg Pustovyy, Ludmila Globa, Edward E. Morrison, Iryna Sorokulova, Vitaly Vodyanoy
Responses of olfactory sensory neurons to odorants are intensely enhanced with the addition of small endogenous and engineered zinc nanoparticles, as shown by...
Slavomir Nemsak, Evgheni Strelcov, Tomas Duchon, Hongxuan Guo, Johanna Hackl, Alexander Yulaev, Ivan Vlassiouk, David Mueller, Andrei Kolmakov
Studies of the electrified solid-liquid interfaces are crucial for understanding of the biological and electrochemical systems. Until recently, the use of...
Bin Li, Xili Cui, Dan O'Nolan, Hui-Min Wen, Mengdie Jiang, Rajamani Krishna, Hui Wu, Rui-Biao Lin, Yu-Sheng Chen, Daqiang Yuan, Huabin Xing, Wei Zhou, Qilong Ren, Guodong Qian, Michael J. Zaworotko, Banglin Chen
Realization of ideal molecular sieves, in which the larger gas molecules are completely blocked without sacrificing high adsorption capacities of the preferred...
Xiangliang Liu, Weijie Guo, Y Wang, M Dai, L F. Wei , Bradley J. Dober, Christopher M. McKenney, Gene C. Hilton, Johannes Hubmayr, Jason E. Austermann, Joel Ullom, Jiansong Gao, Michael Vissers
We present a wafer trimming technique for producing superconducting micro-resonator arrays with highly uniform frequency spacing. With the light-emitting diode...
Thomas Cleveland, Wei He, Angela C. Evans, Nicholas O. Fischer, Matthew A. Coleman, Paul Butler
Nanolipoprotein particles (NLPs), composed of a membrane scaffold protein and lipids, have been used to support membrane proteins in a native-like bilayer...
The viscosity of 1,1,1-trifluoroethane (R143a) was measured with a piezoelectrically actuated, torsionally vibrating quartz sensor. The measurements extended...
Daniel D. Hickstein, David R. Carlson, Abijith S. Kowligy, Matt Kirchner, Scott Domingue, Nima Nader, Henry R. Timmers, Alexander J. Lind, Gabriel G. Ycas, Margaret Murnane, Henry Kapteyn, Scott B. Papp, Scott A. Diddams
Optical waveguides made from periodically poled materials provide high confinement of light and enable the generation of new wavelengths via quasi-phase...
Roger C. Brown, Nate B. Phillips, Kyle P. Beloy, William F. McGrew, Marco Schioppo, Robert J. Fasano, Gianmaria Milani, Xiaogang Zhang, Nathan M. Hinkley, Holly F. Leopardi, T H. Yoon, Daniele Nicolodi, Tara M. Fortier, Andrew D. Ludlow
Optical clocks benefit from tight atomic confinement enabling extended interrogation times as well as Doppler- and recoil-free operation. However, these...
Photothermal induced resonance (PTIR) is a scanning probe technique that provides sample composition information with a lateral resolution down to 20 nm...
Seung-Ho Yu, Xin Huang, Kathleen Schwarz, Rong Huang, Tomas Arias, H?ctor Abruna
As the need for the development of post lithium ion battery technologies rapidly rise, lithium sulfur batteries have attracted widespread attention due to their...
Jeff Walter, Guichuan Yu, Biqiong Yu, Alexander Grutter, Brian Kirby, Julie Borchers, Zhan Zhang, Hua Zhou, Turan Birol, Martin Greven, Chris Leighton
Ionic-liquid/gel-based transistors have emerged as an ideal means to accumulate high charge carrier densities at the surfaces of materials such as oxides...
Lisa C. Ng, Dustin G. Poppendieck, William S. Dols, Steven J. Emmerich
The National Institute of Standards and Technology constructed the Net-Zero Energy (NZE) Residential Test Facility to support the development and adoption of...