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 S. Hussey, Christoph W. Brocker, David L. Jacobson, Thomas R. Gentile, Wangchun Chen, Elias M. Baltic, DV Baxter, J. Doskow, Muhammad D. Arif
The NIST neutron imaging program will build a new imaging instrument in the NCNR guide hall at the end of the neutron guide NG-6, beginning operation in summer...
In this work we report on the development of silicon photonic temperature sensors with ultra-small foot print and high temperature sensitivity as an alternative...
Laser interferometry, the basis for modern length metrology, achieves very high accuracies as a consequence of the stable, well-known frequencies of laser...
Uncertainty has proven difficult to implement in calibrations labs. The subject has mathematics and statistics that are part of normal scientific research but...
Douglas A. Olson, Kevin O. Douglass, Miao Yu, Haijun H. Liu
We have constructed a fiber optical sensor using graphene with four monolayers that demonstrates similar performance to a traditional high-precision acoustic...
We report on the fabrication and characterization of photonic-based nanothermometers, a silicon photonic Bragg grating and photonic crystal cavity. When cladded...
Image retargeting attempts to adapt images to different devices while preserving the salient contents. Most existing methods address retargeting of a single...
Eric Lass, Yaakov S. Idell, Carelyn E. Campbell, Ursula R. Kattner
The discovery of a two-phase γ (FCC)-γ' (L12) field in the ternary Co-Al-W phase diagram has sparked significant research interest into possible Co-based...
Bo Sundman, Ursula R. Kattner, Mauro Palumbo, Suzana G. Fries
Thermodynamics is at the core of materials science. The Calphad method, a powerful tool for materials design and engineering applications, has been shown to be...
Howard S. Cohl, Marjorie A. McClain, Bonita V. Saunders, Moritz Schubotz, Cherry Y. Zou, Alex A. Danoff, Azeem S. Mohammed
One initial goal for the DRMF is to seed our digital compendium with fundamental orthogonal polynomial formulae. We have received permission from Springer...
Ambient particles are ubiquitous in the atmosphere and exert a strong influence on the climate by altering the Earth's radiative balance. Aerosol interactions...
Frank Lombardo, Tanya Brown, Marc Levitan, James LaDue
Estimation of near-surface wind fields in tornadoes has important applications in both structural engineering and meteorology. Estimated near-surface wind...
Mark Alexander Henn, Richard M. Silver, Nien F. Zhang, Hui Zhou, Bryan M. Barnes
In hybrid metrology two or more measurements of the same measurand are combined to provide a more reliable result that ideally incorporates the individual...
The clamped single-edge notched tension (SE(T)) specimen has seen increased use as a single-specimen testing scheme to determine tearing resistance curves in...
Vladimir A. Aksyuk, Brian S. Dennis, Michael Haftel, David Czaplewski, Daniel Lopez, Girsh Blumberg
The authors recent Nature Photonics article titled Compact Nano-Mechanical Plasmonic Phase Modulators [1] is reviewed which reports a new phase modulation...
Craig R. Copeland, Craig D. McGray, Jon C. Geist, Vladimir A. Aksyuk, Samuel M. Stavis
A recently introduced particle-tracking method was used to measure the single motion cycles of an electrothermal actuator with nanometer and microradian...
A Padilla, Alex Watson, Christopher L. Holloway, James Booth
This work presents the design, fabrication and characterization results for a thick film (6µm Cu), coplanar waveguide (CPW) resonator operating at 2.2GHz with a...
Tasshi Dennis, Brent Fisher, Matt Meitl, John Wilson
We describe the design and operation of a spectrally programmable solar simulator capable of being concentrated to very high irradiance for the testing of multi...
Joseph J. Kopanski, Lin You, Jungjoon Ahn, Yaw S. Obeng
Scanning probe microscope (SPM) based methods to obtain subsurface structural information about nano-structured materials are described. A test structure chip...
Only a few years ago, librarians in the Information Services Office (ISO) of the National Institute of Standards and Technology (NIST) were providing a single...
Simulation is an indispensable part of design and analysis in a near infinite space of applications. Every day, simulation is applied to new problems as well as...
With the increasing attention directed to sustainable manufacturing, systematic methodologies and tools are needed for not only incorporating the traditional...
Aaron Forster, Wei-Lun Ho, Kar T. Tan, Donald Hunston
Polyethylene is an advantageous material for the construction of buried pipelines. It is corrosion resistant, seismic tolerant, and utilizes low cost...
Smart manufacturing technologies require a cyber-physical infrastructure to collect and analyze data and information across the manufacturing enterprise. This...
There has been a growing interest in the deployment of Phasor Measurement Units (PMUs) in a Distributed Generation (DG) grid system. The main obstacle is the...
Effective computational tools for shape analysis are needed in many areas of science and engineering. We address this and propose a fast algorithm to compute...
The atomic force microscope (AFM) is a widely utilized instrument for measuring nanometer-scale variations in mechanical properties. Most AFM techniques only...
Shaw C. Feng, Paul W. Witherell, Gaurav Ameta, Duck B. Kim
Additive Manufacturing (AM) processes intertwine aspects of many different engineering-related disciplines, such as powder material metrology, design, in-situ...