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 18626 - 18650 of 74027

Implementing an Innovation Corner in a Federal Research Library

April 8, 2014
Author(s)
Stacy M. Bruss
Innovation centers have been formed in many public and academic libraries. However, there are no known case studies to date of Federal libraries creating innovation centers. The NIST Research Library has begun implementing an innovation centers to provide

Isolated line shapes of molecular oxygen: ab initio calculations versus measurements

April 8, 2014
Author(s)
Vincent T. Sironneau, Joseph T. Hodges, Jean M. Hartmann, Julien Lamouroux
We present comparisons between measured isolated line shapes of molecular oxygen in air and those calculated, free of any adjusted parameter, using requantized Classical Molecular Dynamics Simulations (rCMDS). This work extends a previous study made for a

Nanoparticle Brush Architecture Controls Polymer Diffusion in Nanocomposites

April 8, 2014
Author(s)
Jihoon Choi, Michael-Jon A Hore, Nigel Clarke, Karen I. Winey, Russell J. Composto
We show that polymer diffusion in polymer nanocomposites (PNCs) is controlled by the architecture of polymer brushes grafted to silica nanoparticles (NPs). At highly grafting density, diffusing chains having radius of gyration, R g, are excluded from the

A Quantitative Study of Nanoparticle Release from Nanocoatings Exposed to UV Radiation

April 7, 2014
Author(s)
Li Piin Sung, Deborah S. Jacobs, Justin M. Gorham, Savelas A. Rabb, Xiaohong Gu, Lee L. Yu, Tinh Nguyen
Nanoparticles are increasingly used in polymer coatings (i.e., nanocoatings) to improve multiple properties of traditional coatings such as mechanical, electrical, gas barrier, and UV resistance. These high performance nanocoatings are often used in

International Comparison of Ku-band Standard Gain Horn Characterization

April 6, 2014
Author(s)
Jeffrey R. Guerrieri
International comparison of antenna measurement results between national measurement laboratories supports interoperability of communication equipment in today's world market. The National Institute of Standards and Technology (NIST) is the pilot National

International Comparison of Ku-band Standard Gain Horn Characterization

April 5, 2014
Author(s)
Jeffrey R. Guerrieri
International comparison of antenna measurement results between national measurement laboratories supports interoperability of communication equipment in today's world market. The National Institute of Standards and Technology (NIST) is the pilot National

A Prescription for THz Transistor Characterization

April 4, 2014
Author(s)
Dylan F. Williams
Advances in microwave wafer probes and vector network analyzers have opened up a whole new world of discovery in microwave metrology, making possible accurate on-wafer measurements in printed transmission lines at microwave, millimeter-wave, sub-millimeter

An Empirical Comparison of Combinatorial and Random Testing

April 4, 2014
Author(s)
Raghu N. Kacker, David R. Kuhn
Some conflicting results have been reported on the comparison between t-way combinatorial testing and random testing. In this paper, we report a new study that applies t-way and random testing to the Siemens suite. In particular, we investigate the

Improvements and Extensions of the Neutron Cross Section and Fluence Standards

April 4, 2014
Author(s)
Allan D. Carlson, V G. Pronyaev, R. Capote, F. J. Hambsch, F. Kappeler, C. Lederer, A Mengoni, R O. Nelson, A.J.M Plompen, P Schillebeeckx, S Simakov, S. Tagesen, H Vonach, A Vorobyev, A Wallner
Updated evaluations of the standards are needed within a few years for new versions of several cross section libraries, e.g.; ENDF/B and JEFF, that have been planned. To update the standards, a collaboration, supported by an IAEA Data Development Project

NIST and Computer Security

April 4, 2014
Author(s)
William E. Burr, Hildegard Ferraiolo, David A. Waltermire
The US National Institute of Standards and Technology's highly visible work in four key areas--cryptographic standards, role-based access control, identification card standards, and security automation--has and continues to shape computer and information

The Performance of Essential Facilities in Superstorm Sandy

April 4, 2014
Author(s)
Therese P. McAllister
Superstorm Sandy affected the functionality of a number of essential buildings and facilities in the flooded areas of New York and New Jersey. The flood elevations exceeded design-level floods in many locations, as defined by FIRM maps and codes and

Robustness Assessment of RC Frame Buildings under Column Loss Scenarios

April 3, 2014
Author(s)
Yihai Bao, Joseph A. Main, Hai S. Lew, Fahim Sadek
A computational assessment of the robustness of reinforced concrete (RC) building structures under column loss scenarios is presented. A reduced-order modeling approach is presented for three-dimensional RC framing systems, including the floor slab, and

Robustness of Precast Concrete Frames: Experimental and Computational Studies

April 3, 2014
Author(s)
Joseph A. Main, Yihai Bao, Hai S. Lew, Fahim Sadek
This paper describes both full-scale testing and detailed finite-element modeling of a precast concrete moment-frame assembly extracted from the perimeter moment frame of a 10-story prototype building. The assembly comprises two beam spans and three

Superconformal Copper Electrodeposition in Complexed Alkaline Electrolyte

April 3, 2014
Author(s)
Daniel Josell, Thomas P. Moffat
This paper examines superconformal filling of trenches during copper electrodeposition from alkaline cupric tartrate electrolyte. Extreme bottom-up filling of submicrometer damascene trenches with minimal deposition on the sidewalls and the field around

Optical volumetric inspection of sub-20 nm patterned defects with wafer noise

April 2, 2014
Author(s)
Bryan M. Barnes, Francois R. Goasmat, Martin Y. Sohn, Hui Zhou, Richard M. Silver, Andras Vladar, Abraham Arceo
We have previously introduced a new data analysis method that more thoroughly utilizes scattered optical intensity data collected during defect inspection using bright-field microscopy. This volumetric approach allows conversion of focus resolved 2-D

Advances in source technology for focused ion beam instruments

April 1, 2014
Author(s)
Noel Smith, John Notte, Adam V. Steele
Owing to the development of new ion source technology, users of focused ion beams (FIBs) have an increasingly wide array of uniquely capable platforms to choose from. Specifically, the new ion sources are able to offer superior performance in several

An Empirical Comparison of Combinatorial and Random Testing

April 1, 2014
Author(s)
Laleh Ghandehari, Jacek Czerwonka, Yu Lei, Soheil Shafiee, Raghu N. Kacker, D. Richard Kuhn
Some conflicting results have been reported on the comparison between t-way combinatorial testing and random testing. In this paper, we report a new study that applies t-way and random testing to the Siemens suite. In particular, we investigate the
Displaying 18626 - 18650 of 74027