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Displaying 32376 - 32400 of 73697

The Use of Apertures to Create Discrete Combinatorial Libraries Using Pulsed Laser Deposition

May 18, 2007
Author(s)
Nabil Bassim, Peter K. Schenck, Eugene Donev, Edwin J. Heilweil, Eric J. Cockayne, Martin L. Green, Leonard Feldman
In Pulsed-Laser Deposition (PLD), there are many processing parameters that influence film properties which may be studied such as substrate-target distance, background reactive gas pressure, laser energy, substrate temperature and composition in multi

Computer Simulations of Ionomer Self-Assembly and Dynamics

May 17, 2007
Author(s)
Moonjoy Goswami, S K. Kumar, Aniket Bhattacharya, Jack F. Douglas
Computer simulations of a model telechelic ionomer, i.e. a melt with a charge at each chain end along with neutralizing counterions, indicate a form of self-assembly that is hybrid between the packing driven interactions in block copolymers and the

Influence of Indium-Tin Oxide Surface Structure on the Ordering and Coverage of Organosilane, Carboxylic Acid and Thiol Monolayers

May 17, 2007
Author(s)
M Cerruti, C Rhodes, M Losego, A Efremenko, Jon-Paul Maria, Daniel A. Fischer, D L. Feldheim, S Franzen, Jan Genzer
We report on the formation of organosilane-, carboxylic acid- and thiol-based self assembled monolayers (SAMs) on two lots of commercially prepared Indium Tin Oxide (ITO) thin films. Contact angle measurements, electrochemical experiments, and near-edge x

Measuring the Performance of Urban Search and Rescue Robots

May 17, 2007
Author(s)
Elena R. Messina, Adam S. Jacoff
The Department of Homeland Security is sponsoring development of standards for urban search and rescue (USAR) robots. This program is being coordinated by the National Institute of Standards and Technology and will result in consensus standards developed

Preparing and Probing Atomic Number States With an Atom Interferometer

May 17, 2007
Author(s)
Jennifer Sebby-Strabley, Ben L. Brown, M Anderlini, Patricia J. Lee, William D. Phillips, James V. Porto, Philip R. Johnson
We describe the controlled loading and measurement of number-squeezed states and Poisson states in individual sites of a double well optical lattice. These states are input to an atom interferometer that is realized by symmetrically splitting individual

Securing Radio Frequency Identification (RFID) Systems

May 17, 2007
Author(s)
Karen A. Scarfone
Radio frequency identification (RFID) is a form of automatic identification and data capture technology that uses electric or magnetic fields at radio frequencies to transmit information. An RFID system can be used to identify many types of objects, such

Comparative Inter-Laboratory Study of Wind Loading on Low Industrial Buildings

May 16, 2007
Author(s)
Bogusz Bienkiewicz, Munehito Endo, Joseph Main, William P. Fritz
A progress report on an inter-laboratory comparative study of approach flow and wind pressures on low buildings is presented. The wind tunnel data generated at six wind engineering laboratories during a pilot project initiated and coordinated by the

Silicon Nanowire on Oxide/Nitride/Oxide for Memory Application

May 16, 2007
Author(s)
Qiliang Li, Xiaoxiao Zhu, Hao Xiong, Sang-Mo Koo, D. E. Ioannou, Joseph Kopanski, John S. Suehle, Curt A. Richter
We report the fabrication and characterization of Si nanowire memory devices with oxide/nitride/oxide stacked layers as the gate dielectrics and charge storage media. The devices were fabricated by using photolithography to pattern the metal contacts to

Calibrating Laser Vacuum Wavelength With a GPS-Based Optical Frequency Comb

May 15, 2007
Author(s)
Jack A. Stone Jr., Liang Lu, Patrick F. Egan
The Global Positioning System (GPS) can deliver an exceptionally accurate frequency standard to any point in the world. When we use the GPS signal to control an optical frequency comb, the comb+GPS system provides laser light with well-known frequencies

Face Recognition Algorithms surpass humans matching faces across changes in illumination

May 15, 2007
Author(s)
P. Jonathon Phillips, Alice J. O'Toole, Fang Jian, Julianne Ayadd, Nils Penard, Herve Abdi
We compared the accuracy of eight state-of-the-art face recognition algorithms with human performance on the same task. Humans and algorithms determined whether two face images, taken under different illumination conditions, were pictures of the same

Single Molecule Mass Spectrometry in Solution Using a Solitary Nanopore

May 15, 2007
Author(s)
Joseph W. Robertson, Claudio G. Rodrigues, Oleg V. Krasilnikov, Vincent M. Stanford, Kenneth A. Rubinson, John J. Kasianowicz
A solitary protein nanometer-scale pore provides the basis for single molecule mass spectrometry in solution. Individual poly(ethylene glycol) molecules of different mass that enter a nanopore cause distinct and statistically resolved conductance states

Access Control Policy Combinations for the Grid Using the Policy Machine

May 14, 2007
Author(s)
Vincent C. Hu, David F. Ferraiolo, Karen A. Scarfone
Many researchers have tackled the architecture and requirements aspects of grid security, concentrating on the authentication or authorization mediation instead of authorization techniques, especially the topic of policy combination. Policy combination is

Development of Surgical Lighting for Enhanced Color Contrast

May 14, 2007
Author(s)
Maritoni A. Litorja, Steven W. Brown, Maria E. Nadal, David W. Allen, Alexander Gorbach
The National Institute of Standards and Technology and the National Institutes of Health have started a collaborative study on the development of lighting that will provide enhanced, specific to various tissues, contrast with respect to its surroundings

Microfabricated Laser Saturated Absorption Spectrometer

May 14, 2007
Author(s)
Svenja A. Knappe, Hugh Robinson, Leo W. Hollberg
We demonstrate a miniature microfabricated laser saturated absorption spectrometer. The system consists of miniature optics, a microfabricated Rb vapor cell, heaters, and a photodetector, all contained within a volume of 0.1 cm 3. Saturated absorption

Utility Assessments of Soldier-Worn Sensor Systems for ASSIST

May 14, 2007
Author(s)
Michelle P. Steves
Utility assessments were performed for the Defense Advanced Research Projects Agency (DARPA)Advanced Soldier Sensor Information Systems and Technology (ASSIST) program. This paper describes the field-based, formative methods used to assess utility for
Displaying 32376 - 32400 of 73697
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