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Search Publications

NIST Authors in Bold

Displaying 22326 - 22350 of 73697

Measurement Science for "More-Than-Moore" Technology Reliability Assessments

October 12, 2012
Author(s)
Chukwudi A. Okoro, Jungjoon Ahn, Meagan V. Kelso, Pavel Kabos, Joseph Kopanski, Yaw S. Obeng
In this paper, we will present an overview of metrology issues and some of the techniques currently under development in our group at NIST, aimed at understanding some of the potential performance limiting issues in such highly integrated systems. We will

Single photon frequency up-conversion and its applications

October 12, 2012
Author(s)
Lijun Ma, Oliver T. Slattery, Xiao Tang
The National Institute of Standards and Technology (NIST) has adapted a frequency up-conversion technique to develop highly efficient and sensitive single photon detectors and spectrometer for use at telecommunications wavelengths. The NIST team used these

The Infrared Spectrum of HOOH+ Trapped in Solid Neon

October 12, 2012
Author(s)
Warren E. Thompson, Catherine L. Lugez, Marilyn E. Jacox
When a Ne:H2O2 mixture is codeposited at 4.3 K with a beam of neon atoms that have been excited in a microwave discharge, three new, photosensitive absorptions appear which can be assigned to the three infrared-active fundamentals of trans-HOOH+. When the

Aggregating CVSS Base Scores for Semantics-Rich Network Security Metrics

October 11, 2012
Author(s)
Pengsu Cheng, Lingyu Wang, Sushil Jajodia, Anoop Singhal
A network security metric is desirable in evaluating the effectiveness of security solutions in distributed systems. Aggregating CVSS scores of individual vulnerabilities provides a practical approach to network security metric. However, existing

Development of a 4K Regenerator and Pulse Tube Test Facility

October 10, 2012
Author(s)
Michael A. Lewis, Peter E. Bradley, Ryan P. Taylor, Ray Radebaugh
Recent advances in superconducting electronic systems are requiring larger envelopes for cooling power, efficiency, and operational environments from commercial based cryogenic cooling systems. One such system targeted at meeting these requirements is the

How to Select Microscopy Image Similarity Metrics?

October 10, 2012
Author(s)
Peter Bajcsy, Joe Chalfoun, Mary C. Brady
Comparisons of two microscopy images can be accomplished in many different ways. This paper presents a system that recommends appropriate similarity metrics for microscopy image comparisons based on biological application requirements. The motivation stems

Testing Three-body Quantum Electrodynamics with Trapped Ti-20 Ions: Evidence for a Z-Dependent Divergence between Experiment and Calculation

October 10, 2012
Author(s)
Lawrence T. Hudson, C T. Chantler, Mark N. Kinnane, John D. Gillaspy, A.T. Payne, L F. Smale, Albert Henins, Joseph N. Tan, J A. Kimpton, E Takacs, K Makonyi, Joshua M. Pomeroy
We report the measurement of the w (1s2p 1P1 ! 1s2 1S0) resonance line transition energy in helium-like titanium. Our result, 4749.85(7) eV, deviates from the most recent ab initio prediction by three times our experimental uncertainty and by many times

EUV spectra of Rb-like to Cu-like gadolinium ions in an electron beam ion trap

October 8, 2012
Author(s)
Yuri Ralchenko, Deirdre Kilbane, G. O'Sullivan, John D. Gillaspy, Joseph Reader
Measurements of extreme ultraviolet radiation from highly-charged gadolinium ions were made at the National Institute of Standards and Technology. The ions were produced and confined in an electron beam ion trap (EBIT) and the spectra were recorded with a

Versus: A Framework for General Content-Based Comparisons

October 8, 2012
Author(s)
Peter Bajcsy, Antoine Vandecreme, Benjamin J. Long, Paul Khouri Saba, Joe Chalfoun, Luigi Marini, Rob Kooper, Michal Ondrejcek, Kenton McHenry, Smruti Padhy
Versus is a framework for the execution and dissemination of customizable content-based file comparison methods. Given digital objects such as files, database entries, or in-memory data structures, we are interested in establishing their proximity (i.e

A consistent methodology to characterize BAW resonators

October 7, 2012
Author(s)
Eduard Rocas, Carlos Collado, Robert Aigner, Jordi Mateu, A Hueltes, James Booth
We present a methodology to characterize BAW resonators both linearly and nonlinearly. The procedure uses physical modeling along with measurements that exploit different manifestations of the nonlinear phenomena to identify the dominant linear and

An Approach to Ontology-Based Intention Recognition Using State Representations

October 7, 2012
Author(s)
Craig I. Schlenoff, Sebti Foufou, Stephen B. Balakirsky
In this paper, we present initial thoughts on an approach to ontology/logic-based intention recognition based on the recognition, representation, and ordering of states. This is different than traditional approaches to intention recognition, which use

Current Compliance Circuit to Improve Variation in ON State Characteristics and to Minimize RESET Current

October 7, 2012
Author(s)
Pragya R. Shrestha, Adaku Ochia, Jason P. Campbell, Canute I. Vaz, Jihong Kim, Kin P. Cheung, Helmut Baumgart, Gary Harris
The wide distribution of ON and OFF values and high SET current in resistive memory is attributed to the high current overshoot during the SET process. In this paper we show a circuit which is capable of precisely limiting the current during SET process

In Situ Atomic Scale Imaging of Electrochemical Lithiation of Silicon

October 7, 2012
Author(s)
Xiao Hua Liu, Sergiy Krylyuk, Albert Davydov, Jian Yu Huang
In lithium-ion batteries, the electrochemical reaction between the electrodes and lithium is a critical process that controls the capacity, cyclability and reliability of the battery. Despite intensive study, the atomistic mechanism of the electrochemical

Toward a Recommendation System for Image Similarity Metrics

October 7, 2012
Author(s)
Peter Bajcsy, Joe Chalfoun, Mary C. Brady
This paper addresses the problem of mapping application specific requirements on image similarity metrics to the plethora of existing image similarity computations. The work is motivated by the fact that there is no recommendation method for choosing a

Automated Multiprobe Microassembly using Vision Feedback

October 5, 2012
Author(s)
John D. Wason, John T. Wen, Jason J. Gorman, Nicholas Dagalakis
This paper describes the algorithm development and experimental results of a vision-guided multi-probe microassembly system. The key focus is to develop the capabilities required for the construction of three dimensional (3D) structures using only planar

Effect of Polymer Degree of Conversion on Streptococcus mutans Biofilms

October 5, 2012
Author(s)
Alison M. Kraigsley, Kathy Tang, John A. Howarter, Katrice Lippa, Sheng Lin-Gibson, Nancy Lin
The effects of key material properties of polymeric composite restorations on cariogenic oral biofilms are needed to provide insight into the materials' role in recurrent caries. The objective of this study was to quantify the effects of degree of

High-Resolution Local Current Measurement of CdTe Solar Cells

October 4, 2012
Author(s)
Heayoung Yoon, Dmitry A. Ruzmetov, Paul M. Haney, Marina S. Leite, Behrang H. Hamadani, Albert A. Talin, Nikolai B. Zhitenev
We investigate local electronic properties of CdTe solar cells using electron beam to excite electron-hole pairs and evaluate spatially resolved photocurrent characteristics. Standard semiconductor processes were used to fabricate Ohmic metal contacts on
Displaying 22326 - 22350 of 73697
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