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Journals

Excess Noise Generation During Spectral Boradening in Microstructure Fiber

July 1, 2003

Author(s)

J N. Ames, S Ghosh

We observe that nanojoule femtosecond pulses that are spectrally broadened in microstructure fiber acquire excess noise. The excess noise is namifest as an...

Quantum Information With Neutral Atoms as Quibits

July 1, 2003

Author(s)

James V. Porto, S L. Rolston, B L. Tolra, Carl J. Williams, William D. Phillips

One of the essential features of a quantum computer is a quantum register of well-characterized qubits. Neural atoms in optical lattices are a natural candidate...

Momentum-transfer dependence of x-ray Raman scattering at the Be K-Edge

July 1, 2003

Author(s)

C Sternemann, M Volmer, J A. Soininen, H Nagasawa, M Paulus, H Enkisch, G Schmidt, M Tolan, W Schulke

Inelastic x-ray scattering spectra have been measured for energy losses around the Be K-edge in order to perform a systematic study of the dependence of the...

The Expanding NIST Atomic Spectra Database

July 1, 2003

Author(s)

Wolfgang L. Wiese

The NIST Atomic Spectra Database is reviewed, and the additions planned for the near-term and longer range future are discussed. Two examples are presented...

Quantum Information With Neutral Atoms as Qubits

July 1, 2003

Author(s)

James V. Porto, S L. Rolston, B L. Tolra, Carl J. Williams, William D. Phillips

Neutral atoms trapped in periodic optical potentials (optical lattices) offer a possible route toward quantum computation. The atoms can be kept well isolated...

Delivery of High Stability Optical and Microwave Frequency Standards Over an Optical Fiber Network

July 1, 2003

Author(s)

Jun Ye, J L. Peng, R J. Jones, K W. Holman, John L. Hall, D J. Jones, Scott A. Diddams, John E. Kitching, S Bize, James C. Bergquist, Leo W. Hollberg, Lennart Robertsson, L -. Ma

Optical and radio frequency standards located in JILA and NIST laboratories have been connected through a 6.9 km roundtrip optical fiber link. An optical...

Oxidative DNA Damage: Mechanisms, Mutation, and Disease

July 1, 2003

Author(s)

M S. Cooke, M D. Evans, M. Dizdaroglu, J Lunec

Oxidative DNA damage is an inevitable consequence of cellular metabolism, with a propensity for increased levels following toxic insult. Although more than base...

Theory of the Greenspan Viscometer

July 1, 2003

Author(s)

Keith A. Gillis, J B. Mehl, Michael R. Moldover

We present a detailed acoustic model of the Greenspan acoustic viscometer, a practical instrument for accurately measuring the viscosity eta of gases. As...

Substrate Specificities and Excision Kinetics of DNA Glycosylases Involved in Base-Excision Repair of Oxidative DNA Damage

July 1, 2003

Author(s)

M. Dizdaroglu

Reactive oxygen derived species such as free radicals are formed in living cells by normal metabolism and exogenous sources, and cause a variety of types of DNA...

Pseudo-Pure Fluid Equations of State for the Refrigerant Blends R-410A, R-404A, R-507A, and R-407C

July 1, 2003

Author(s)

Eric W. Lemmon

Pseudo pure-fluid equations of state explicit in Helmholtz energy have been developed to calculate the thermodynamic properties of the refrigerant blends R-410A...

Virtual Environment for Manipulating Microscopic Particles with Optical Tweezer

July 1, 2003

Author(s)

Thomas W. LeBrun, Kevin W. Lyons, Yong-Gu Lee

In this paper, we use virtual reality techniques to define an intuitive interface to a nanoscale manipulation device. This device utilizes optical methods to...

Coherent imagin of nanoscale plasmon patterns with a carbon nanotue optical probe

July 1, 2003

Author(s)

R Hillenbrand, F Keilmann, P Hanarp, D S. Sutherland, J Aizpurua

We introduce a carbon nanotube as optical near-field probe and apply it to visualize the plasmon fields of metal nanostructures in both amplitude and phase at...

Learning from Other Libraries: Benchmarking to Assess Library Performance

July 1, 2003

Author(s)

P J. Deutsch, Barbara P. Silcox

The Research Advisory Committee (RAC) at the National Institute of Standards and Technology (NIST) in its 2000 Annual Report to the NIST Director expressed...

Committee Reports for the 88th National Conference on Weights and Measures, July 13-17, 2003, Sparks, NV

July 1, 2003

Author(s)

H V. Oppermann, Georgia L. Harris

The 88th annual meeting of the National Conference on Weights and Measures will be held in Sparks, NV, July 13-17, 2003. The theme of the Conference is Moving...

Microwave Properties of Low-Temperature Co-Fired Ceramic Systems

July 1, 2003

Author(s)

Richard G. Geyer, Liang Chai, Aziz Shaikh, Vern Stygar

Co-fired, patterned multi-layer ceramic structures can provide RF designers with the means for compact, dense microwave circuit and component design spanning...

Suppression of Surface Pattern Formation in Blend Films With Block Copolymer Surfactant

July 1, 2003

Author(s)

Li Piin Sung, Jack F. Douglas, Charles C. Han, Alamgir Karim

We show that the addition of a small concentration of a block copolymer surfactant to a thin phase separating blend film can supppress the pattern formation...

The NSF NSDL GREEN Digital Library: Green's Functions Research and Education Enhancement Network

July 1, 2003

Author(s)

Laura M. Bartolo, Aadam C. Powell, G M. Shreve, Vinod Tewary

Green's functions are powerful mathematical tools with strong pedagogical value providing not only solutions to difficult problems but also visualization for...

Suppression of Phase Separation Pattern Formation in Blend Films With Block Copolymer Compatibilizer

July 1, 2003

Author(s)

Li Piin Sung, Jack F. Douglas, Charles C. Han, Alamgir Karim

We show that the addition of a small concentration of a block copolymer surfactant to a thin phase separating blend film can suppress the pattern formation that...

Suppression of Capillary Instability of a Polymeric Thread Via Parallel Plate Confinement

July 1, 2003

Author(s)

Y Son, Nicos Martys, John G. Hagedorn, Kalman D. Migler

We investigate the stability of a polymer thread imbedded in a matrix that is confined between two parallel plates. Utilizing a combination of experiments...

Cosolvent-assisted Spray Pyrolysis for the Generation of Metal Particles

July 1, 2003

Author(s)

Valeri I. Babushok, S H. Ehrman, Thomas Germer, Jae H. Kim, George W. Mulholland

A co-solvent assisted spray pyrolysis process was developed for the formation of pure metal particles from metal salt precursors without the direct addition of...

The Detection and Sizing of Flaws in Components From the Hot-End of Gas Turbines Using Phase Contrast Radiography: A Feasibility Study

July 1, 2003

Author(s)

J Thornton, P J. McMahon, B E. Allman, J E. Murphy, K A. Nugent, David L. Jacobson, Muhammad D. Arif, S. A. Werner

In this paper we present a feasibility study of the use of phase contrast radiography in the examination of components from the hot-section of gas turbine...

Monte Carlo Modeling of an Integrating Sphere Reflectometer

July 1, 2003

Author(s)

A Prokhorov, Sergey Mekhontsev, Leonard Hanssen

The Monte Carlo method has been applied to numerical modeling of an integrating sphere designed for hemispherical-directional reflectance factor measurements...

Nanoscale Oxidation of Zirconium Surfaces: Kinetics and Mechanisms

July 1, 2003

Author(s)

Natalia Farkas, Li Zhang, E A. Evans, R Ramsier, John A. Dagata

We show that AFM-induced oxide features can be reproducibly formed on both Zr and ZrN surfaces, and that the growth rate decreases rapidly with increasing time...

Response of Chromium-Doped Alumina Screens to Soft X-Rays Using Synchrotron Radiation

July 1, 2003

Author(s)

James K. McCarthy, Uwe Arp, A Baciero, B Zurro, B A. Karlin

We have measured the response of chromium-doped alumina screens to soft x-ray radiation and derived quantum efficiency curves for the energy range from 2.5 keV...

Rotational Spectroscopy of Vibrationally Excited States by Infrared-Fourier Transform Microwave-Microwave Triple-Resonance Spectroscopy

July 1, 2003

Author(s)

K O. Douglass, J C. Keske, F S. Rees, K Welch, H S. Yoo, Brooks H. Pate, I Leonov, R D. Suenram

A Fourier transform microwave (FTMW) spectroscopy technique for measuring the rotational spectra of vibrational excited states is demonstrated. A pulsed...

Terahertz Spectroscopy of Short-Chain Polypeptides

July 1, 2003

Author(s)

M R. Kutteruf, Craig Brown, L K. Iwaki, M B. Campbell, Timothy M. Korter, Edwin J. Heilweil

Terahertz (THz) absorption and neutron vibrational spectra for solid-phase short-chain peptide sequences at 77 K and 298 K are reported. We demonstrate that a...

High-frequency noise measurements in spin-valve Devices

July 1, 2003

Author(s)

N. A. Stutzke, S. L. Burkett, Stephen E. Russek

High-frequency magnetic noise in magnetoresistive devices being developed for read-sensor and magnetic random access memory applications may present fundamental...

In-situ conductance characterization of Fe/Ag multilayer contacts on GaAs

July 1, 2003

Author(s)

Dustin Hite, Stephen E. Russek, David P. Pappas

Electrical transport characteristics for epitaxially grown Ag/Fe/Ag multilayers on GaAs(100) and GaAs(110) have been studied under various growth conditions...

Formation of a Surface Quantum Dot Near Laterally and Vertically Neighboring Dots

July 1, 2003

Author(s)

B Yang, Vinod Tewary

Elastic energy release rate (EERR) of a surface quantum dot (QD) near laterally and vertically neighboring seed QDs in a linear anisotropic elastic substrate...

Characterization of Chinese Ink in Size and Surface

July 1, 2003

Author(s)

J R. Swider, Vincent A. Hackley, J Winter

Chinese lnk, a mixture of soot and animal glue, has been used in East Asia for centuries as the sole black paint of choice. The combination of animal glue and...

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