Journals

Incoherent Neutron Scattering as a Probe of the Dynamics in Molecularly Thin Polymer Films

January 1, 2003

Author(s)

Christopher L. Soles, Jack F. Douglas, Wen-Li Wu, Robert M. Dimeo

Incoherent neutron scattering measurements were performed on polycarbonate (PC), poly(methyl methacrylate) (PMMA), and poly(vinyl chloride) (PVC) films of...

Prediction of Entropy and Dynamic Properties of Water below the Homogeneous Nucleation Temperature

January 1, 2003

Author(s)

Francis W. Starr, C A. Angell, H E. Stanley

Wall Migration and Shear-Induced Diffusion of Fluid Droplets in Emulsions

January 1, 2003

Author(s)

Steven D. Hudson

The spatial distribution of drops in multiphase flow through narrow passages is analyzed theoretically and experimentally. In simple shear between two plates...

Origin of Particle Clustering in a Simulated Polymer Nanocomposite and its Impact on Rheology

January 1, 2003

Author(s)

Francis W. Starr, Jack F. Douglas, S C. Glotzer

Proton NMR Characterization of Room-Temperature Aging in Isotactic Polypropylene and Ethylene/Octene Copolymers

January 1, 2003

Author(s)

David L. VanderHart, Chad R. Snyder, R G. Alamo

In this paper, we utilize the relatively high sensitivity of proton NMR to revisit a well recognized problem of ambient-temperature aging in a couple of...

Volumetric Contraction and Methacrylate Conversion in Photopolymerized Amorphous Calcium Phosphate/Methacrylate Composites

January 1, 2003

Author(s)

Drago Skrtic, J W. Stansbury, Joseph M. Antonucci

Confinement Effects on Moisture Absorption Kinetics in Polyelectrolyte Films

January 1, 2003

Author(s)

B D. Vogt, Christopher L. Soles, V. J. Lee, Eric K. Lin, Wen-Li Wu

Near Edge X-Ray Absorption Fine Structure Measurements of the Interface between Bottom Antireflective Coatings and a Model Deprotected Photoresist

January 1, 2003

Author(s)

E Jablonski, S Sambasivan, Eric K. Lin, Daniel A. Fischer, C Devadoss, R Puligadda

Recent Results On The Connection Between Thermodynamics And Dynamics In Supercooled Water

January 1, 2003

Author(s)

Francis W. Starr, C A. Angell, E LaNave, Srikanth Sastry, A Scala, F Sciortino, H E. Stanley

X-Ray Transition Energies: New Approach to a Comprehensive Evaluation

January 1, 2003

Author(s)

R Deslattes, Ernest G. Kessler, Paul Indelicato, L de Billy, E Lindroth, J Anton

The authors combine modern theoretical calculations with evaluated selected experimental data to produce a comprehensive data resource of K- and L-x-ray...

Stray Light and Ocean Color Remote Sensing

January 1, 2003

Author(s)

Steven W. Brown, Bettye C. Johnson, N Souaidia, R Barnes, D K. Clark

Instruments used to make radiometric measurements of the ocean are typically calibrated against incandescent sources with a spectral distribution that peaks in...

Experimental Studies of Peptide Bonds: Identification of the C₇^eq Conformation of the Alanine Dipeptide Analog N-Acetyl-Alanine N'-Methylamide From Torsion-Rotation Interactions

January 1, 2003

Author(s)

R J. Lavrich, David F. Plusquellic, R D. Suenram, Gerald T. Fraser, Angela R. Hight Walker, M J. Tubergen

Rotational spectra of the bio-mimetic molecule, alanine dipepitide and the double 15N( 15N 2) isotopomer have been observed using a pulsed-molecular-beam...

Development of a Portable Integrating Sphere Source for the Earth Observing System's Calibration Validation Programme

January 1, 2003

Author(s)

Steven W. Brown, Bettye C. Johnson

We have designed and built a portable integrating sphere source to be used at NASA satellite sensor calibration facilities in support of the EOS calibration...

Bogoliubov Approach to Superfluidity of Atoms in an Optical Lattice

January 1, 2003

Author(s)

A M. Rey, Karen G. Burnett, R Roth, M Edwards, Carl J. Williams, Charles W. Clark

We use the Bogoliubov theory of atoms in an optical lattice to the study the approach to the Mott-insulator transition. We derive an explicit expression for the...

Final Report on the Key Comparison CCM.P-K5 in Differential Pressure From 1 Pa to 1000 Pa

January 1, 2003

Author(s)

A P. Miiller, G Cignolo, M P. Fitzgerald, M P. Perkin, M Sardi, Philip A. Simpson

This report describes a CCM key comparison of low differential-pressure standards at four National Measurement Institutes (NMIs) that was carried out during the...

Analytical Advances in the SEM

January 1, 2003

Author(s)

J H. Scott

The scanning electron microscope (SEM) - when equipped with one or more x-ray spectrometers - is undoubtedly one of the most powerful tools ever devised for the...

Time-of-Flight Secondary Ion Mass Spectrometry (TOF-SIMS) for High-Throughput Characterization of Biosurfaces

January 1, 2003

Author(s)

S V. Roberson, A Sehgal, Albert J. Fahey, Alamgir Karim

In this approach, a coated polymer film was exposed to UV-ozone treatment through a variable density filter, producing a surface energy gradient with a...

Effect of Changing the Electrode Gap on the Spatial and Electrical Properties of O₂/CF₄ Plasmas

January 1, 2003

Author(s)

Kristen L. Steffens, Mark A. Sobolewski

Planar laser-induced fluorescence (PLIF) measurements were made to determine 2-D spatial maps of CF2 density as a chemical marker of plasma uniformity in 9% O2...

Indicator Cells Assist the Development of Tissue Engineering Products

January 1, 2003

Author(s)

Anne L. Plant, John T. Elliott, K J. Langenbach

The field of tissue engineering holds great promise. The premise is that living cells can be coaxed to differentiate, organize, and regenerate normal...

Time of Flight Secondary Ion Mass Spectrometry (TOF-SIMS) for High-Throughput Characterization of Bio-Surfaces

January 1, 2003

Author(s)

S V. Roberson, A Sehgal, Albert J. Fahey, Alamgir Karim

A graded oxidation process, involving UV-ozone (UVO) treatment, was used to create a poly(epsilon-caprolactone) (PCL) surface with a systematic variation in...

Comparison Of The Complete Mtdna Genome Sequences Of Human Cell Lines - Hl-60 And Gm10742a - From Individuals With Pro-Myelocytic Leukemia And Leber Hereditary Optic Neuropathy, Respectively, And The Inclusion Of Hl-60 In The Nist Human Mitochondrial Dna

January 1, 2003

Author(s)

Barbara C. Levin, K A. Holland, Diane K. Hancock, Michael Coble, T. J. Parsons, L J. Kienker, D W. Williams, M P. Jones, K L. Ritchie

Forensic and clinical laboratories benefit from DNA Standard Reference Materials (SRMs) that provide the quality control and assurance that their results from...

The Remarkable Metrological History of ¹⁴C Dating: From Ancient Egyptian Artifacts to Particles of Soot and Grains of Pollen

January 1, 2003

Author(s)

Lloyd A. Currie

Radiocarbon dating would not have been possible if 14C had not had the wrong half-life -- a fact that delayed its discovery[1]. Following the discovery of this...

Electron-Impact Total Ionization Cross-Sections of the Chlorofluoromethanes

January 1, 2003

Author(s)

Karl K. Irikura, M A. Ali, Yong Sik Kim

Electron-impact total ionization cross sections for CCl 3F (Freon 11), CCl 2F 2 (Freon 12), CClF 3 (Freon 13), CHCl 2F (Freon 21), CHClF 2 (Freon 22), and CH...

Comparing Mass Spectra: When Do They Match?

January 1, 2003

Author(s)

Stephen E. Stein

A common method of determining the identity of a compound is to compare its spectrum against a known standard spectrum of the same substance. Comparisons can be...

Updated NIST Photomask Linewidth Standard

January 1, 2003

Author(s)

James E. Potzick, J Pedulla, Michael T. Stocker

NIST is preparing to issue the next generation in its line of binary photomask linewidth standards. Called SRM 2059, it was developed for calibrating...

A Framework for Planning withIncrementally Created Graphs in Attributed Problem SpacesProblem Spaces

January 1, 2003

Author(s)

Stephen B. Balakirsky

In this thesis, a framework for parallel planning agents is developed and applied to planningproblems ranging from domain independent planning to planning for...

X-ray diffraction, photoluminescence and composition standards of compound semiconductors

January 1, 2003

Author(s)

Alexana Roshko, Kristine A. Bertness, J T. Armstrong, Ryna B. Marinenko, Marc L. Salit, Lawrence H. Robins, Albert J. Paul, R J. Matyi

Work is underway to develop composition standards and standardized assessment procedures for compound semiconductors. An AlGaAs composition standard with less...

Effects of noise level in fitting in situ optical reflectance spectroscopy data

January 1, 2003

Author(s)

Chih-chiang Fu, Kristine A. Bertness, C. M. Wang

Curve-fitting of simulated optical reflectance spctroscopy data is used to evaluate the accuracy of parameters derived from the fits of actual data. These...

Interlaboratory comparison of InGaAsP EX-SITU characterization

January 1, 2003

Author(s)

Alexana Roshko, Kristine A. Bertness

A study to improve the accuracy of ex-situ characterization of InGaAsP materials for optoelectronics is underway. Six InGaAsP thin film specimens, with nominal...

The National Institute of Justice Standards for Hand-Held and Walk-Through Metal Detectors Used in Concealed Weapon and Contraband Detection

January 1, 2003

Author(s)

Nicholas G. Paulter Jr.

The National Institute of Justice (NIJ) standards for hand-held and walk-through metal detectors were initially published in 1974 and later revised in 2000 and...