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Displaying 32326 - 32350 of 73830

Modeling of Photochemical Reactions in a Focused Laser Beam

July 1, 2007
Author(s)
Fern Y. Hunt, Adolfas Gaigalas, Lili Wang
This paper presents a mathematical model of photodegradation of fluorophores passing through a laser beam. The beam is focused on the sample and thus the power distribution of incident light is strongly dependent on spatial location while the fluorophores

NIST Measurement Services: cw Laser Power and Energy Calibrations at NIST

July 1, 2007
Author(s)
Joshua A. Hadler, Christopher L. Cromer, John H. Lehman
This document describes a calibration service for absolute laser power and energy measurements of laser power meters and detectors used with continuous wave lasers at laser wavelengths between 325 and 1550 nm. In addition to a summary of the calibration

Operational analysis of a quantum dot, optically gated, field-effect transistor as a single-photon detector

July 1, 2007
Author(s)
Eric Gansen, Mary A. Rowe, Marion Greene, Danna Rosenberg, Todd E. Harvey, Mark Su, Robert Hadfield, Sae Woo Nam, Richard Mirin
We report on the operation of a novel single-photon detector, where a layer of self-assembled quantum dots (QDs) is used as an optically addressable floating gate in a GaAs/Al0.2Ga0.8As Δ}-doped field-effect transistor. Photogenerated holes charge the QDs

RAPID INSPECTION OF CARBON NANOTUBE QUALITY

July 1, 2007
Author(s)
Stephanie A. Hooker, Roy H. Geiss, Aparna Kar
Carbon nanotubes have unique properties of interest for applications in aerospace, electronics, and biotechnology. However, the properties of different batches of carbon nanotubes can vary considerably depending on chemical purity and the nanotube types

RFID Devices and Systems in Homeland Security Applications

July 1, 2007
Author(s)
Kate Remley, Jeffrey R. Guerrieri, Dylan Williams, David R. Novotny, Anthony B. Kos, Nelson Bryner, Nader Moayeri, Michael Souryal, Kang Lee, Steven Fick
This article reports on activities being carried out by the National Institute of Standards and Technology to ensure secure, reliable use of Radio-Frequency Identification (RFID) technology in homeland security and public safety applications. These

Standards-Based Semantic Middleware

July 1, 2007
Author(s)
Nenad Ivezic, Boonserm Kulvatunyou, Marko Vujasinovic, Pat Snack, Zuran Marjanovic, Hyunbo Cho
We describe a novel semantics-based architecture for standards-based approaches to interoperable applications. The paper includes our experiences in prototyping the proposed architecture and demonstrating the resulting semantic middleware capability. This

The Role of Water in the Thermodynamics of Drug Binding to Cyclodextrin

July 1, 2007
Author(s)
Niya Tordorova, Frederick P. Schwarz
The thermodynamic parameters, DBGo, DBHo, and DBSo, of the drugs flurbiprofen (FLP), nabumetone (NAB), and naproxen (NPX) binding to b-cyclodextrin (bCD) and to g-cyclodextrin (gCD) in 0.10 M sodium phosphate buffer were determined from isothermal

Towards Standards for Integrated Gaming and Simulation for Incident Management

July 1, 2007
Author(s)
Sanjay Jain, Charles R. McLean, Yung-Tsun T. Lee
Simulation and gaming can support decision making through all phases of incident management including prevention, preparedness, response, recovery and mitigation. A number of gaming and simulation tools have been developed for the purpose but they

Visualization, A Tool For Understanding Fire Dynamics

July 1, 2007
Author(s)
Glenn P. Forney
Computational tools have been developed at the National Institute of Standards and Technology (NIST) for modeling fire spread and smoke transport. These models include FDS (Fire Dynamics Simulator) for modeling fire spread and smoke transport and Smokeview

Benchmarks for the Third Industrial Fluids Simulation Properties Challenge

June 28, 2007
Author(s)
Peter A. Gordon, Martin Schiller, Chien-Ping Chai Kao, Scott Bair, Daniel G. Friend
We outline the procedures used to establish benchmark physical property data for the Third Industrial Fluids Simulation Challenge. For both challenge problems, this involved measurement of new data. When possible, measurements were compared with published

Gold Nanostructures Created by Highly Charged Ions

June 28, 2007
Author(s)
Joshua M. Pomeroy, Holger Grube, A C. Perrella, John D. Gillaspy
Nanometer sized structures produced by individual highly charged ion (HCI)impacts are reported for the first time on a high conductivity surface andexamined by scanning tunnelling microscopy (STM). Highly charged ions, e.g.,Bi$^{81+}$, represent an exotic

A Comparison of Predicted to Measured Photovoltaic Module Performance

June 27, 2007
Author(s)
Arthur H. Fanney, Brian P. Dougherty, Mark W. Davis
Computer simulation models to accurately predict the electrical performance of photovoltaic modules are essential. Without such models, potential purchasers of photovoltaic systems have insufficient information to judge the relative merits and cost
Displaying 32326 - 32350 of 73830
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