U.S. flag

An official website of the United States government

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.

Search Publications

NIST Authors in Bold

Displaying 12876 - 12900 of 13226

Realizations of the Triple Point of Sulfur Hexafluoride in Transportable-Refillable Cells

July 1, 2018
Author(s)
Weston L. Tew
… (SF6) TP is a good candidate to provide adequate "drop-in compatible" replacements for the lowest costs. We report … performed at the National Institute of Standards and Technology (NIST) using a new series of transportable and … (p-T) equilibrium melting line of 1.55 MPa/K, which is in agreement with the value predicted via the Clapeyron …

Operationalizing Bibliometrics as a Service in a Research Library

June 11, 2018
Author(s)
Susan L. Makar, Amy Trost
… During the past year, librarians in the Information Services Office (ISO) of the National Institute of Standards and Technology (NIST) expanded ISO’s bibliometric analysis … emerging research topics • an exploration of keywords in a single research area over the course of a decade • a …

An Integrated-Photonics Optical-Frequency Synthesizer

May 3, 2018
Author(s)
Daryl T. Spencer, Tara E. Drake, Travis Briles, Jordan R. Stone, Laura C. Sinclair, Connor D. Fredrick, Qing Li, Daron A. Westly, Bojan R. Ilic, Aaron Bluestone, Nicolas Volet, Tin Komljenovic, Seung Hoon Lee, Dong Yoon Oh, Myoung-Gyun Suh, Ki Youl Yang, Martin H. Pfeiffer, Tobias J. Kippenberg, Erik Norberg, Kerry Vahala, Kartik A. Srinivasan, Nathan R. Newbury, Luke Theogarajan, John E. Bowers, Scott A. Diddams, Scott B. Papp
… cutting across disciplines of basic science and technology. Here we show how to synthesize the absolute … synthesis, which builds on the ubiquitous capability in the microwave domain, is enabling for measurement of …

Experimentally Generated Random Numbers Certified by the Impossibility of Superluminal Signaling

April 11, 2018
Author(s)
Peter L. Bierhorst, Emanuel H. Knill, Scott C. Glancy, Yanbao Zhang, Alan Mink, Stephen P. Jordan, Andrea Rommal, Yi-Kai Liu, Bradley Christensen, Sae Woo Nam, Martin J. Stevens, Lynden K. Shalm
… of determinism to build a system that can increase trust in random sources. In the future, random number generators based on loophole-free Bell tests may play a role in increasing the security and trust of our cryptographic …

Methods for Quantitative Infrared Directional-Hemispherical and Diffuse Reflectance Measurements Using a Fourier Transform Spectrometer and a Commercial Integrating Sphere

January 20, 2018
Author(s)
Leonard M. Hanssen, Thomas A. Blake, TImothy J. Johnson, Russell G. Tonkyn, Brenda M. Forland, Tanya L. Myers, Carolyn S. Brauer, Yin-Fong Su, Bruce E. Bernacki
… sphere measurements of solid samples are important in providing reference data for contact, standoff and remote … prepared by the National institute of Standards and Technology (NIST, USA), a LabSphere Spectralon visible …

STRSeq: A catalog of sequence diversity at human identification Short Tandem Repeat loci

November 1, 2017
Author(s)
Katherine Gettings, Lisa Borsuk, D Ballard, Martin Bodner, Bruce Budowle, Laurence Devesse, Jonathan King, W. Parson, Christopher Phillips, Peter Vallone
… alleles at the Short Tandem Repeat (STR) loci targeted in human identification assays. This international … to populate the project are the aggregate alleles observed in targeted sequencing studies across four laboratories: National Institute of Standards and Technology (N=1786), Kings College London (N=1043), …

Improving Software Assurance through Static Analysis Tool Expositions

October 31, 2017
Author(s)
Terry S. Cohen, Damien J. Cupif, Aurelien M. Delaitre, Charles Daniel De Oliveira, Elizabeth N. Fong, Vadim Okun
… for software assurance. One technique that has grown in acceptance since the early 2000s is static analysis, which … executing it. The National Institute of Standards and Technology (NIST) Software Assurance Metrics and Tool … Tool Expositions (SATEs), designed to advance research in static analysis tools that find security-relevant …

Electronic and Chemical Structure of 2D materials

October 3, 2017
Author(s)
Sujitra Pookpanratana
The drive to produce smaller, faster, lower power electronic components for computing is pushing the semiconductor industry to nanometer-scale device structures. Atomically thin two-dimensional (2D) materials such as transitional metal dichalcogenides

NanoUV-VIS: an interactive visualization tool for monitoring the evolution of optical properties of nanoparticles throughout synthesis reactions

September 20, 2017
Author(s)
Bryan Calderon Jimenez, Gabriel Sarmanho, Karen E. Murphy, Antonio R. Montoro Bustos, Jose R. Vega Baudrit
… (NPs) are being used for a broad array of high technology applications including sensing, imaging, targeted … important to ensure their effective use and applicability. In this context, Ultraviolet/Visible Spectroscopy (UV/VIS) is … the optical properties of the newly formed nanomaterials. In view of the extensive use of UV/VIS for NP …

The structural phases and vibrational properties of Mo1-xWxTe2 alloys

September 1, 2017
Author(s)
Sean M. Oliver, Ryan Beams, Sergiy Krylyuk, Arunima Singh, Irina Kalish, Alina Bruma, Francesca Tavazza, Iris Stone, Stephan J. Stranick, Albert Davydov, Patrick M. Vora
… The structural polymorphism in transition metal dichalcogenides (TMDs) provides exciting … advanced electronics. For example, MoTe2 crystallizes in the 2H semiconducting phase at ambient temperature and … is therefore promising for developing phase change memory technology. However, achieving this goal necessitates a …

Development of a New ASTM E57 Point-to-Point Standard Related to 3D Imaging Systems

July 19, 2017
Author(s)
Prem K. Rachakonda
… Metrology Group (DMG) at National Institute of Standards & Technology (NIST), along with various other organizations has been involved in the development of a documentary standard for a class of … group within the sub-committee E57.02 on Test Methods in 2006 to standardize the evaluation of instruments such as …

Demonstration of efficient nonreciprocity in a microwave optomechanical circuit

July 6, 2017
Author(s)
Gabriel A. Peterson, Florent Q. Lecocq, Katarina Cicak, Raymond W. Simmonds, Jose A. Aumentado, John D. Teufel
… engineer nonreciprocal interactions is an essential tool in modern communication technology as well as a powerful resource for building … have shown that nonreciprocal behavior can be achieved in optomechanical systems, but performance in these last two … Demonstration of efficient nonreciprocity in a microwave optomechanical circuit …

Influence of Aggregate Characteristics on Concrete Performance

May 16, 2017
Author(s)
Dale P. Bentz, Scott Z. Jones, Paul E. Stutzman, Joshua Arnold, Michael Boisclair, Paul Rothfeld, Jussara Tanesi, Haejin Kim, Jose Munoz, Mengesha Beyene
… on concrete performance has been extensively studied and in many cases reduced to quantitative relationships, that … and concrete performance has not been investigated in detail. Based on previous research that demonstrated … study between the National Institute of Standards and Technology and the Federal Highway Administration was …

Expanding lipidome coverage using LC-MS/MS data-dependent acquisition with automated exclusion list generation

March 6, 2017
Author(s)
John Bowden, Jeremy P. Koelmel, Nicholas M. Kroeger, Emily L. Gill, Candice Z. Ulmer, Rainey E. Patterson, Richard A. Yost, Timothy J. Garrett
… biomolecules within a biological system. Changes in the presence or quantity of these biomolecules can … the entire genome can now be sequenced, however, in the burgeoning fields of metabolomics and lipidomics, only … of high resolution tandem mass spectrometry (HR-MS/MS), in combination with ultra-high performance liquid …

Time and frequency from electrical power lines

March 6, 2017
Author(s)
Jonathan E. Hardis, Demetrios Matsakis, Blair Fonville
… for the public for over a hundred years. However, advances in technology and changes in the electric power industry have generated a movement …

Examining the Copy and Paste Function in the Use of Electronic Health Records

January 19, 2017
Author(s)
Svetlana Z. Lowry, Mala Ramaiah, Sandra S. Prettyman, Debora Simmons, David Brick, Ellen Deutsch, Lorraine B. Possanza, Ollie B. Gray, Betty A. Levine, Kinsey Gimbel, Kyle Andrews
… The National Institute of Standards and Technology (NIST) in collaboration with ECRI conducted a study titled “Examining the Copy and Paste Function in the Use of Electronic Health Records” which was intended … Examining the Copy and Paste Function in the Use of Electronic Health Records …

Performance Data from the NIST Net-Zero Energy Residential Test Facility

January 17, 2017
Author(s)
William M. Healy, Arthur H. Fanney, Brian P. Dougherty, Lisa C. Ng, William V. Payne, Tania Ullah, Farhad Omar
… houses with comfortable and healthy indoor environments. In a net-zero energy building, any energy consumption over … examined whether the facility would reach net-zero status. In both years, the house was operated in an all-electric configuration, with slight modifications …

Differentiating Left- and Right-Handed Carbon Nanotubes by DNA

December 28, 2016
Author(s)
Ming Zheng, Geyou Ao, Jason K. Streit, Jeffrey A. Fagan
… of macromolecules of defined structures is a crucial step in the evolution of life. The mechanism by which these … respectively, rendering them large differences in fluorescence intensity and chemical reactivity. This … conformational entropy minimization an implicit criterion in the aqueous two-phase selection, resulting in exquisite …

Chemical Segregation and Microstructural Evolution of Fiber Laser-Welded Low Carbon Sheet Steel

July 25, 2016
Author(s)
Ann C. Chiaramonti Debay, Stephanie L. Miller, Paul T. Blanchard, Erik A. Pfeif
… improved since its first commercial deployment in 1966, and is the preferred joining method when high weld … of similar and dissimilar materials as is often the case in the automotive, aerospace, and medical industries. However this technology has not been implemented in many structurally …

Summary of results from the 2014/2015 Hydrocarbon Intercalibration Experiment (HIE)

May 27, 2016
Author(s)
Christopher Reddy, Stephen Wise, Lane C. Sander, Jacolin Murray
… Gulf of Mexico Oil Spill and Ecosystem Science Conference in Mobile, Alabama, the Gulf of Mexico Research Initiative … were supplied from the National Institute of Standards and Technology (NIST) with two standard reference materials … field-weathered residue of the Macondo well oil dissolved in toluene. Twenty laboratories submitted results on …

State of the Field: Extreme Precision Radial Velocities

May 17, 2016
Author(s)
Debra A. Fischer, Guillem Anglada-Escude, Pamela Arriagada, Roman V. Baluev, Jacob L. Bean, Lars A. Buchhave, Abhijit K. Chakraborty, Scott Diddams, Gabor Furesz, B. S. Gaudi, Philip C. Gregory, Frank Grundahl, Guillaume Hebrard, David W. Hogg, Andrew W. Howard, Colby A. Jurgenson, David W. Latham, Greg Laughlin, Thomas J. Loredo, Suvrath Mahadevan, Tyler M. McCracken, Mario R. Perez, David F. Phillips, P Plavchan, Lisa Prato, Andreas Quirrenbach, Paul Robertson, David Sawyer, Jason D. Eastman, Pedro Figueira, Eric B. Ford, Daniel Foreman-Mackey, Paul Fournier, John A. Johnson, Christophe Lovis, Francesco Pepe, Francesco Pepe, Ansgar Reiners, Nuno C. Santos, Damien Segransan, Alessandro Sozzetti, Thorsten Carroll, Francois Bouchy, Paul Jorden, Tilo Steinmetz, Xavier Dumusque, Artie P. Hatzes, Enrique Herrero, Michael Endl, Andrew Szentgyorgyi
… spectrometer environmental control, greater stability in the illumination of the spectrometer optics, better …

Pattern-Directed Phase Separation of Polymer-Grafted Nanoparticles in a Homopolymer Matrix

May 12, 2016
Author(s)
Ren Zhang, Bongjoon Lee, Michael R. Bockstaller, Sanat K. Kumar, Christopher Stafford, Jack F. Douglas, Dharmaraj Raghavan, Alamgir Karim
… and connectivity represents a continuing challenge in the development of novel hybrid materials for many … separation of polymer-tethered nanoparticles immersed in a chemically different polymer matrix provides an … scalable method for fabricating submicron-sized NP domains in polymer thin films. We investigate this phenomenon with a …

Evaluating Digital PCR as a primary method for the quantification of human genomic DNA: Accessible amplifiable targets

January 11, 2016
Author(s)
Margaret C. Kline, Erica L. Romsos, David L. Duewer
… can be accurately calibrated with solutions of DNA in aqueous buffer. Since they do not require external … dPCR system that tracks the progress of PCR amplification in multiple reaction chambers. We conclude that dPCR does not estimate the ab-solute number of PCR targets in a given volume but rather the number of accessible and …
Displaying 12876 - 12900 of 13226
Was this page helpful?