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Journals

Comment on The Reaction HCl+ + CF4 HCF4+ + Cl: Implications for the Heat of Formation of CF3+ (Ferguson et al., JCP 118, 2130, 2003)

October 16, 2008

Author(s)

Karl K. Irikura

Prompted by the suggestion that entropy is important in gas-phase ion-molecule reactions, Ferguson et al. recently re-examined the reaction between HCl+ and CF4...

Comments on the Entropy of NonEquilibrium Steady States

October 16, 2008

Author(s)

D J. Evans, R Lamberto

We discuss the entropy of nonequilibrium steady states. We show that the so-called spontaneous entropy production of reversible deterministic nonequilibrium...

Cellular DNA Biomarkers for the Safety of Tissue-Engineered Medical Products Using Artificial Skin as a Model

October 16, 2008

Author(s)

H Rodriguez, C D. O'Connell, Peter E. Barker, M. Dizdaroglu, Donald H. Atha, Pawel Jaruga, M Birincioglu, M A. Marino, P McAndrew

Fundamental to the safety of many tissue-engineered medical products is how cells respond to a given polymer when implanted into the body. Assurance of cellular...

Response to a Letter to the Editor of Microscopy and Microanalysis Journal

October 16, 2008

Author(s)

Dale E. Newbury

Response to a letter to the editor of Microscopy and Microanalysis journal from Simon Burgess commenting on my paper Misidentification of Major Constituents by...

The Use of an SF5+ Primary Ion Beam for Ultra Shallow Depth Profiling on an Ion Microscope SIMS Instrument

October 16, 2008

Author(s)

J Greg Gillen, Marlon L. Walker, P E. Thompson, J Bennett

A magnetic sector SIMS instrument has been fitted with a modified hot filament duoplasmatron ion source for generation of SF 5 + primary ion beams for SIMS...

Vibronic Coupling in Semi-Fluorinated Alkanethiol Junctions: Implications for Selection Rules in Inelastic Electron Tunneling Spectroscopy

October 16, 2008

Author(s)

J M. Beebe, H J. Moore, T R. Lee, James G. Kushmerick

Determining the selection rules for the interaction of tunneling charge carriers with molecular vibrational modes is important for a complete understanding of...

Comparison of Gas-Phase and Chemisorbed Photoemission Spectra of Oligo(para-phenylene-ethynlene)s

October 16, 2008

Author(s)

Steven W. Robey, Roger D. van Zee, Christopher D. Zangmeister, N E. Gruhn, Yuxing Yao, J M. Tour

Ultraviolet photoemission spectra of the three-ring oligo(para-phenylene-ethynylene) and corresponding thiol were measured in the gas phase and compared to the...

A Method for Partially Incoherent Imaging of Crystalline Specimens in Conventional TEM

October 16, 2008

Author(s)

Ian M. Anderson

Quantitative imaging of crystalline specimens in conventional transmission electron microscopy (TEM) is inhibited by diffraction effects coherent scattering...

Iodine-Stabilized HeNe-Laser Frequeny Measurements Referenced to the GPS System

October 16, 2008

Author(s)

Richard W. Fox, Scott Diddams, A Bartels, Leo W. Hollberg

Intramolecular Versus Intermolecular Hydrogen Bonding in the Adsorption of Aromatic Alcohols Onto an Acrylic Ester Sorbent

October 16, 2008

Author(s)

K L. Mardis, B J. Brune, P Vishwanath, B Giorgis, G F. Payne, M K. Gilson

Intramolecular hydrogen bonds influence the intermolecular binding constantsof adsorbate/adsorbent and guest/host systems. Understanding the competition between...

He⁴ Thermophysical Properties: New ab initio Calculations

October 16, 2008

Author(s)

John J. Hurly, J B. Mehl

Since 2000, atomic physicists have reduced the uncertainty of the helium-helium ab initio potential,for example, from approximately 0.6% to 0.1% at 4 bohr and...

A Novel Method for Determining Substances That Interfere With the Measurement of Water in Oils and Other Chemicals by the Karl Fischer Methods

October 16, 2008

Author(s)

S A. Margolis, J L. Paulson, E T. Park

A coulometric method has been developed and validated for the measurement of substances that interfere with the Karl Fischer method for the determination of...

Organizing Self-Assembled Porphyrin Arrays on Metal and Glass Surfaces

October 16, 2008

Author(s)

J Batteas, J C. Garno, Charles M. Drain, G Smeureanu, T Milic

Herein we report an investigation of the surface organization of tetrameric arrays of porphyrins self-assembled by metal ion coordination to exocyclic pyridyl...

Thermophysical Properties of Chlorine from Speed-of-Sound Measurements

October 16, 2008

Author(s)

John J. Hurly

The speed of sound was measured in gaseous chlorine using a highly precise acoustic resonance technique. The data span the temperature range 260 K to 440 K and...

Huntington s Disease: The Need for a Standard Reference Material to Provide Quality Control for the Accurate Detection of the Number of Causal Trinucleotide Repeats

October 16, 2008

Author(s)

Barbara C. Levin, Kristy L. Richie

Huntington disease (HD) is a neurodegenerative disease with prevalence rates that vary in different parts of the world, but average from 4 to 7 per 100,000...

Application of a CMP Model to Tungsten CMP

October 16, 2008

Author(s)

E W. Paul

A general model of chemical mechanical polishing (CMP) has been derived which shows the dependence of the polishing rate on the concentration of chemicals and...

Deconvolution of Magnetic Measurements to Calculate the Surface Density of a Low Voltage Breaker Arc

October 16, 2008

Author(s)

Nadia Machkour-Deshayes, A Laurent, F Gary

In this paper, we present an original method, which allows reconstituting the current density in a low voltage breaker arc. This method is based on the...

Well-Ordered Polymer Melts with 5 nm Lamellar Domains from Blends of a Disordered Block Copolymer and a Selectively Associating Homopolymer of Low or High Molar Mass

October 16, 2008

Author(s)

Vijay Tirumala, August W. Bosse, Eric K. Lin, Vikram Daga, Alvin Romang, Jan Ilavsky, J J. Watkins

The use of short chain block copolymer melts as nanostructured templates for sub-10 nm domains is often limited by their low segregation strength (N). Since...

Molecular Simulation of the Swelling of Polyelectrolyte Gels by Monovalent and Divalent Counterions

October 16, 2008

Author(s)

De-Wei Yin, Jack F. Douglas, J J. de Pablo

In this study we examine the volumetric properties of such polyelectrolyte gels in relation to the progressive substitution of monovalent counterions by...

Characterization of Probe Dynamic Behaviors in Critical Dimension Atomic Force Microscopy

October 15, 2008

Author(s)

Shaw C. Feng, Che B. Joung, Theodore V. Vorburger

Critical Dimension Atomic Force Microscopy (CD-AFM) is a primary means to measure the geometric shapes of walls and trenches on the nanometer scale in...

Contact resonance atomic force microscopy for viscoelasticity

October 15, 2008

Author(s)

Donna C. Hurley, Philip Yuya, J Turner

We present a quantitative method for determining the viscoelastic properties of materials with nanometer spatial resolution. The approach is based on the atomic...

Strong Low-Frequency Quantum Correlations From a Four-Wave Mixing Amplifier

October 15, 2008

Author(s)

C F. McCormick, Alberto M. Marino, V Boyer, Paul D. Lett

Quantum-correlated light displays sub-classical noise fluctuations between frequency sidebands on a single beam (quadrature squeezing) or between the...

Impact of Sucrose Level on Storage Stability of Proteins in Freeze-Dried Solids: II. Correlation of Aggregation Rate with Protein Structure and Molecular Mobility

October 13, 2008

Author(s)

Bingquan S. Wang, Serguei Tchessalov, Marcus T. Cicerone, Nicholas W. Warne, Michael Pikal

The purpose of this study is to investigate the impact of sucrose level on storage stability of dried proteins and thus better understand the mechanism of...

Sounds of Atoms: Life in Science

October 10, 2008

Author(s)

Stephan J. Stranick

Early in setting up our nanoscience laboratory at Penn State, we were frustrated because we could not peer into the tunneling junctions of our scanning...

Influence of Nanotube Length on the Optical and Conductivity Properties of Thin Single-Wall Carbon Nanotube Networks

October 10, 2008

Author(s)

Daneesh O. Simien, Jeffrey Fagan, Wei R. Luo, Jack F. Douglas, Kalman D. Migler, Jan Obrzut

Thin layers of length-sorted single wall carbon nanotubes (SWCNT), formed through filtration from a dispersing solvent onto a filter substrate ( buckypaper )...

Structural Changes to the Calcium Silicate Hydrate Gel Phase of Hydrated Cement with Age, Drying, and Resaturation

October 8, 2008

Author(s)

J Thomas, Andrew J. Allen, Hamlin M. Jennings

The effects of partial and complete drying on the internal structure of hydrated cement paste were investigated using small angle neutron scattering (SANS)...

Exploring the Oxidative Decompositions of Methyl Esters: Methyl Butanoate and Methyl Pentanoate as Model Compounds for Biodiesel

October 7, 2008

Author(s)

Carrigan J. Hayes, Donald R. Burgess Jr.

Methyl esters are commonly used as surrogates for complex biofuel chemistry; this utility necessitates development of combustion mechanisms for these species. A...

Crystal Structure of Li2B12H12: a Possible Intermediate Species in the Decomposition of LiBH4

October 4, 2008

Author(s)

Jae-Hyuk Her, Mohammed Yousufuddin, Wei Zhou, Satish Jalisatgi, James Kulleck, Jason .. Zan, Son-Jong Hwang, Robert C. Bowman, Terrence J. Udovic

Performance of mitochondrial DNA mutations detecting early stage cancer

October 3, 2008

Author(s)

J P. Jakupciak, Samantha D. Maragh, Maura E. Markowitz, Alissa K. Greenberg, Mohammad O. Hoque, A Maitra, Peter E. Barker, Paul D. Wagner, William N. Rom, Sudhir Srivastava, David Sidransky, Catherine D. O'Connell

Neutron Scattering Study of the Excitation Spectrum of Solid Helium At Ultra-low Temperatures

October 1, 2008

Author(s)

Elizabeth Blackburn, John Goodkind, Sunil K. Sinha, Collin Broholm, John R. Copley, Ross W. Erwin

There has been a resurgence of interest in the properties of Solid Helium due to the recent discovery of non-classical rotational inertia (NCRI) in solid 4He by...

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