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Conferences

Using VRML in Construction Industry Applications

February 1, 2000

Author(s)

Robert R. Lipman, K A. Reed

This paper describes initial research using the Virtual Reality Modeling Language (VRML97) in construction industry applications. The modeling of steel...

A Unified Theory of Deterministic and Noise-Induced Transitions: Melnikov Processes and Their Application in Engineering, Physics and Neuroscience

February 1, 2000

Author(s)

Emil Simiu

For a class of deterministic systems chaotic dynamics entails irregular transitions between motions within a potential well (librations) and motions across a...

Kerr Imaging of a Co/Pt Bimodal Magneto-Optical Medium

February 1, 2000

Author(s)

R A. Fry

Spatially-resolved magneto-optical (MO) images of a (0.3 nm Co/1.2 nm Pt)15 multilayer film with perpendicular magnetic anisotropy have been obtained by Kerr...

Molecular Simulations of Filled Polymers

February 1, 2000

Author(s)

Francis W. Starr, T B. Schroeder, S C. Glotzer

Fillers are commonly used in industrial applications to alter the properties of polymer materials. However, little is known about the microscopic details of...

An Ultracold Neutral Plasma Created by Photoionizing Laser-Cooled Xenon

February 1, 2000

Author(s)

T C. Killian, S Kulin, S L. Rolston

We create an ultracold neutral plasma by photoionization of laser-cooled xenon atoms. The charge carrier density is as high as 2 x10^{9} cm^{-3}, and the...

Direct Imaging of Static and Dynamic Ion Cloud Distributions in an Electron Beam Ion Trap

February 1, 2000

Author(s)

James V. Porto

We have used long-lived uv transitions in the ground term of Ars 13+, Xe 31+ and Xe 32+ to directly image highly charged ions within an electron beam ion trap...

Four-Wave Mixing With Multiple Spin States

February 1, 2000

Author(s)

J P. Burke, Carl J. Williams, Paul S. Julienne, Y B. Band, M Trippenbach

Four-wave mixing is a common process in nonlinear optics wherein the nonlinear interaction between light and matter allows three light waves to interact or mix...

Measuring the Orientation and Re-Orientation Dynamics of Single Molecules

February 1, 2000

Author(s)

K D. Weston, Lori S. Goldner

Single molecule fluorescence techniques for the study of macromolecular motion and conformational dynamics are useful for understanding the mechanisms of...

Ultracold Atom Collisions Probed With Ultrashort Laser Pulses

February 1, 2000

Author(s)

F K. Fatemi, Kevin Jones, Paul D. Lett

Photoassociation, the light-assisted formation of molecules, has become a powerful tool for studying weakly bound molecules, and for extracting atomic...

Observation of Photons From an Inhibited Spontaneous Emitter

February 1, 2000

Author(s)

D A. Branning, Alan L. Migdall

A fun and timely problem in cavity quantum electrodynamics is the question of whether atoms are actually radiating anything when their spontaneous emission is...

A Frequency Stabilized Laser Array for Use in Displacement Metrology

February 1, 2000

Author(s)

J Pedulla, R Deslattes, John R. Lawall

We have developed a frequency stabilized laser system to supply light to measure atomic-scale displacements of a stage moved in real time. Each laser in the...

Δ-Kick and Raman Cooling on a Cesium Atomic Fountain

February 1, 2000

Author(s)

L Lising

Atomic clocks similar to the most precise clocks in existence are presently being developed for installation on the International Space Station. The...

Atomic Force Microscopy of Hybrid Bilayer Membranes

February 1, 2000

Author(s)

John T. Woodward IV

Hybrid bilayer membranes (HBM) are synthetic membrane mimics designed to form a biomimetic surface. The basic HBM system consists of a lipid monolayer adsorbed...

Novel Detection Method for DNA Hybridization Based on Molecular Spotlighting

February 1, 2000

Author(s)

T H. Huang, Michael J. Tarlov

A new platform for monitoring hybridization of thiol-derivatized DNA probes (SH-DNA) immobilized on gold surfaces is currently being developed. The gold surface...

Grazing Incidence X-Ray Photoemission Spectroscopy of Silicon Oxy-Nitride Ultrathin Films

February 1, 2000

Author(s)

E Landree, Terrence J. Jach

Grazing incidence X-ray photoemission spectroscopy (GIXPS) can be used to obtain both chemical and structural information to describe the depth profile for a...

Surface Plasmon Resonance Measurements of DNA Probe/Target Hybridization Reactions on Gold Surfaces

February 1, 2000

Author(s)

G B. Saupe, Michael J. Tarlov

Optimizing and understanding the parameters involved in thin film DNA hybridizations are important to emerging DNA sensor array technologies. We recently...

FT-IR Microspectroscopy and Multivariate Statistics on Plant Cells

February 1, 2000

Author(s)

B M. Allen

Agricultural biotechnology requires methods for the early diagnosis of the effects of environmental stressors such as excessive exposure to ozone, metal and...

Predictions of Environmental Properties of Halogenated Organics by a Computational Chemistry Screening Tool

February 1, 2000

Author(s)

F Louis

The abstraction of hydrogen atoms by hydroxyl radicals is the determining factor in the tropospheric lifetimes of most saturated organic compounds, including...

Development of a Heteroplasmic Mitochondrial DNA Standard Reference Material for Detection of Heteroplasmy and Low Frequency Mutations

February 1, 2000

Author(s)

L A. Tully, Frederick P. Schwarz, Barbara C. Levin

The National Institute of Standards and Technology (NIST) is developing a heteroplasmic human mitochondrial DNA (mtDNA) standard reference material (SRM) to...

Using Chemical Kinetic Effects for Understanding and Developing Chemical Sensors

February 1, 2000

Author(s)

M C. Wheeler, Richard E. Cavicchi, G Poirier, Stephen Semancik

While conductometric gas sensing has been widely studied, the mechanisms are not well understood (particularly for modified oxides). For example, what magnitude...

An Electrochemical Biosensor Sensitive to Structure Changes in an Absorbed Phospholipid Layer: Development of a Phospholipase C Biosensor

February 1, 2000

Author(s)

John T. Elliott

We have fabricated an electrochemical biosensor for detecting structure changes in a phospholipid layer absorbed onto a mixed thioalkyl self-assembled monolayer...

Recognition of Nonnative Polypeptides by the GroEL Chaperonin: How Important Is Hydrophobic Surface Area for Binding?

February 1, 2000

Author(s)

W K. Hartmann, E Eisenstein

The broad range of substrate polypeptides that interact with the GroEL chaperonin has prompted the proposal that hydrophobic interactions provide the primary...

Melting Analysis of DNA Dumbbells with Repeating Dinucleotide Stem Sequences Reveals Evidence for Long Range Sequence Dependent Interactions in Short Duplex DNA

February 1, 2000

Author(s)

Peter M. Vallone, R. Owczarzy, P. V. Riccelli, A. S. Benight

Melting Analysis of DNA Dumbbells with Repeating Dinucleotide Stem Sequences Reveals Evidence for Long Range Sequence Dependent Interactions in Short Duplex DNA...

The Role of Hydrogen Bonding in Transition-State Stabilization by Uracil-DNA Glycosylase

February 1, 2000

Author(s)

A C. Drohat

An important question regarding the mechanism of N-glycosidic bond cleavage by pyrimidine-specific DNA glycosylases is how the enzyme activates the pyrimidine...

Capillary X-Ray Microfluorescence Instrument

February 1, 2000

Author(s)

J R. Swider

Although many techniques for microanalysis exist, few are totally nondestructive, easy to maintain, or portable. Techniques such as Electron Probe Microanalysis...

Improving PDM Testability Through Standards Harmonization

February 1, 2000

Author(s)

Katherine C. Morris

Product Data Management (PDM) is quickly becoming a mainstay technology supporting product development. Several standards are emerging to support...

All-Dielectric Micromachined Calorimeter for High-Resolution Microwave Power Measurement

February 1, 2000

Author(s)

John M. Moreland, Pavel Kabos, Albrecht Jander

We have developed a micromachined bimaterial cantilever with a thin-film ferromagnetic resonance (FMR) sensor to probe rf fields near microwave devices. A...

Imaging of Impact Damage in Composites Using Optical Coherence Tomography

February 1, 2000

Author(s)

Joy Dunkers, D P. Sanders, Donald L. Hunston, M J. Everett

Resistance to impact damage is extremely important for most composites. Such damage can initiate delamination, one of the most common failure modes in...

Structure and Microwave Dielectric Properties in the x Ca₂AlNbO₆: (1-x) Ca₃Nb₂O₈ System

February 1, 2000

Author(s)

Julia Y. Chan, Terrell A. Vanderah, Robert S. Roth, Winnie Wong-Ng, B A. Reisner, Richard G. Geyer

The structure and dielectric properties of bulk ceramics in the xCa2AlNbO6: (1-x)Ca3Nb2O8 system were studied. Ca2AlNbO6 (P21/n, a = 5.3785(1) , b = 5.4158(1)...

Diagnostics for Light Measuring Devices in Flying-spot Display Measurements

January 31, 2000

Author(s)

Paul A. Boynton, Edward F. Kelley, S. Highnote, R. Hurtado

Flying-spot displays, such as some laser projection displays, use a high-energy beam as a light source that scans the image across the display screen. Each...

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