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Displaying 32376 - 32400 of 73830

Extending the Limits of Image-Based Optical Metrology

June 20, 2007
Author(s)
Richard M. Silver, Bryan M. Barnes, Ravikiran Attota, Jay S. Jun, Michael T. Stocker, Egon Marx, Heather J. Patrick
We have developed a set of techniques, referred to as scatterfield microscopy, in which the illumination is engineered in combination with appropriately designed metrology targets. Previously we reported results from samples with sub-50 nm sized features

Multifunctional ferrimagnetic-ferroelectric thin films for microwave applications

June 20, 2007
Author(s)
Ranko R. Heindl, S. Witanachchi, P. Mukherjee, A. Heim, G. Matthews, S. Balachandran, S. Natarajan, T. Weller
Ferrimagnetic and ferroelectric structures based on barium strontium titanate and barium hexaferrite are investigated for potential applications in tunable microwave devices. Thin film bilayers were grown on MgO and sapphire, and their underlying

Towards scaling up trapped ion quantum information processing

June 19, 2007
Author(s)
Dietrich G. Leibfried, David J. Wineland, Brad R. Blakestad, John J. Bollinger, Joseph W. Britton, J Chiaverini, Ryan Epstein, Wayne M. Itano, John D. Jost, Emanuel H. Knill, C. Langer, R Ozeri, Rainer Reichle, Signe Seidelin, Nobuyasu Shiga, Janus Wesenberg
Recent theoretical advances have identifed several computational algorithms that can be implemented utilizing quantum information processing (QIP), which gives an exponential speedup over the corresponding (known) algorithms on conventional computers. QIP

Tuning Polymer Melt Fragility With Antiplasticizer Additives

June 19, 2007
Author(s)
Robert A. Riggleman, Jack F. Douglas, J J. de Pablo
A polymer-diluent model exhibiting antiplasticization has beendeveloped and characterized by molecular dynamics simulations. Antiplasticizer molecules are shown to decrease the glass transition temperature Tg, but to increase the elastic moduli of the

High Contrast Scanning Nano-Raman Spectroscopy of Silicon

June 15, 2007
Author(s)
N Lee, R Hartschuh, D Mehtani, A Kisliuk, M D. Foster, Alexei Sokolov, J F. Maguire, Martin L. Green
We have demonstrated that scanning nano-Raman spectroscopy (SNRS), generally known as tip enhanced Raman spectroscopy (TERS), with side illumination optics can be effectively used for analysis of silicon based structures at the nanoscale. Even though the

Recent Developments of the HLPR Chair

June 15, 2007
Author(s)
Roger V. Bostelman, James S. Albus, Tommy Chang
The Home Lift, Position and Rehabilitation (HLPR) Chair, developed at the National Institute of Standards and Technology (NIST) within the Intelligent Systems Division (ISD) from 2005 to 2006, is currently being evaluated for static stability using

Urban Search and Rescue Robot Performance Standards: Progress Update

June 15, 2007
Author(s)
Adam S. Jacoff, Elena R. Messina
In this paper, we describe work in performance standards for urban search and rescue (US&R) robots, begun in 2004 by the Department of Homeland Security. This program is being coordinated by the National Institute of Standards and Technology and will

A Novel Cooling System to Reduce Thermally-Induced Errors of Machine Tools

June 14, 2007
Author(s)
M A. Donmez, Mahn-Hee Hahn, Johannes A. Soons
This study explores a method to reduce thermally-induced errors of machine tools through temperature stabilization with compressed air. The method uses inexpensive, specialy-shaped, silicon tubing wth small silts. Compressed air forced through such tubing

Density Dependence of the Forbidden Lines Ni-Like Tungsten

June 14, 2007
Author(s)
Yuri Ralchenko
The magnetic-octupole (M3) and electric-quadrupole (E2) transitions between theground state $3d^{10}~^1S_0$ and the lowest excited $3d^94s$ $(5/2,1/2)$ J = 3and J = 2 states in the Ni-like tungsten are shown to exhibit a strongdependence on electron

Common Industry Specification for Usability --Requirements

June 13, 2007
Author(s)
Mary F. Theofanos
.The Common Industry Specification for Usability - Requirements (CISU-R) helps usability professionals, product managers, and others working in product design and development to create usability requirements. It sets standards for specifying usability

Relationship between dispersion metric and properties of PMMA/SWNT nanocomposites

June 13, 2007
Author(s)
Takashi Kashiwagi, Jeffrey Fagan, Jack F. Douglas, Kazuya Yamamoto, N. Alan Heckert, Stefan D. Leigh, Jan Obrzut, Fangming Du, Minfang Mu, Sheng Lin-Gibson, K Winey, R Haggenmueller
Particle spatial dispersion is a crucial characteristic of polymer composite materials and this property is recognized as especially important innanocomposite materials due to the general tendency of nanoparticles to aggregate under processing conditions

Concepts of Operations (CONOPS) for the Evaluation of Latent Fingerprint Technologies (ELFT)

June 12, 2007
Author(s)
Vladimir N. Dvornychenko, Brian J. Cochran, Patrick J. Grother, Michael D. Indovina, Craig I. Watson
The National Institute of Standards and Technology (NIST) is conducting a series of tests for evaluating the state of the art in Automated Latent Fingerprint matching. The intent of the testing is to quantify the core algorithmic capability of contemporary

Near-field microwave microscope measurements to characterize bulk material properties

June 12, 2007
Author(s)
Atif A. Imtiaz, Thomas Baldwin, Hans T. Nembach, Thomas M. Wallis, Pavel Kabos
We measured bulk dielectric (Fused Silica), semiconductor (Silicon) and metal (Copper), with a Near-field Scanning Microwave Microscope (NSMM). We use three bulk materials to test the existing quasi-static theoretical approach to de-embed the materials

Towards Development of an ISO Container to Spreader Bar Sensor System

June 12, 2007
Author(s)
Richard J. Norcross
This report describes a sensor system that determines the relative pose between a crane spreader and an ISO container. The sensor system supports efforts to transfer cargo between ships in high sea states under ONR s HiCASS program. The sensor system is a

Cryogenic Technologies Group Website

June 11, 2007
Author(s)
Marilyn R. Yetzbacher, Peter E. Bradley
Revised website of Information pertaining to the Cryogenics Group. Provides general information, staffing, contact information, articles and publications relative to the subject of cryogenics and cryogenic coolers and their applications. Of a more

Margin Failures in Crown-Like Brittle Structures: Off-Axis Loading

June 11, 2007
Author(s)
Chris Ford, T Qasim, M T. Bush, X Z. Hu, Mahek Shah, Vibhu Saxena, Brian R. Lawn
The effect of off-axis loading of compliant indenters on the initiation of cracks at the margins of dental crown-like dome structures consisting of glass shells back-filled with an epoxy resin is examined. As in previous studies on similar structures but

Real-Time Deployment of Multihop Relays for Range Extension

June 11, 2007
Author(s)
Michael R. Souryal, Johannes Geissbuehler, Leonard E. Miller, Nader Moayeri
When the range of single-hop wireless communication is limited by distance or harsh radio propagation conditions, relays can be used to extend the communication range through multihop relaying. This paper targets the need in certain scenarios for rapid

Building Information for Emergency Responders

June 8, 2007
Author(s)
Stephen J. Treado, Alan B. Vinh, David G. Holmberg, Michael A. Galler
This paper describes a methodology for controlling access to building information to approved external entities such as police, fire and public safety officials. Building automation systems frequently monitor critical building information, including the

Inter-Laboratory Comparison of CMOS Distortion Measurements

June 8, 2007
Author(s)
Catherine A. Remley, Joe Gering, Susan L. Sweeney, C. Michael Olsen, Cliff Xie, Dave K. Walker, Tom McKay, John J. Pekarik
We describe an interlaboratory measurement comparison of distortion in a CMOS low-noise device operating under weakly nonlinear conditions. Issues that commonly arise in performing and interpreting nonlinear measurements are discussed, such as power vs

Liposome Characterization with Fluorescence Cumulant Analysis

June 8, 2007
Author(s)
Joseph E. Reiner, Andreas Jahn, Laurie E. Locascio, Michael Gaitan, John J. Kasianowicz
Liposomes are self-assembled spherical vesicles comprised of a lipid bilayer membrane that segregates an internal aqueous environment from an external aqueous environment. These nanometer-scale structures have demonstrated potential for targeted drug

A Combinatorial Testing Strategy for Concurrent Programs

June 7, 2007
Author(s)
Yu Lei, Richard Carver, Raghu N. Kacker, David Kung
One approach to testing concurrent programs is called reachability testing, which derives test sequences automatically and on-the-fly, without constructing a static model. Existing reachability testing algorithms are exhaustive in that they are intended to
Displaying 32376 - 32400 of 73830
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