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Journals

Synthesis and properties of turbostratically disordered,ultrathin WSe2 films

May 11, 2010

Author(s)

Ngoc Nguyen, Polly Berseth, Qiyin Lin, Catalin Chiritescu, D.G. Cahill, Anastassios Mavrokefalos, Li Shi, Paul Zschack, Michael D. Anderson, Ian M. Anderson, David C. Johnson

Turbostratically disordered tungsten diselenide (WSe2) thin films with as few as two c-axis-oriented (basal plane) structural units were synthesized from...

Statistical modeling of short term fading and shadowing in Ultra-Wideband systems

May 10, 2010

Author(s)

Camillo A. Gentile

Statistical modeling of Ultra-Wideband (UWB) signals is undertaken to examine the existence of short term fading and shadowing. Based on the data collected from...

Accelerated weathering of polyaramid and polybenzimidazole firefighter protective clothing fabrics

May 10, 2010

Author(s)

Rick D. Davis, Joannie W. Chin, Chiao-Chi Lin, Sylvain H. Petit

Exposure to simulated ultraviolet sunlight at 50 C and 50% relative humidity caused a significant deterioration in the mechanical performance of polyaramid and...

FRVT 2006: Quo Vidas Face Quality

May 10, 2010

Author(s)

P J. Phillips, J. R. Beveridge, Geof H. Givens, Bruce A. Draper, David Bolme, Yui M. Lui

This paper summarizes a study of how three state-of-the-art algorithms from the Face Recognition Vendor Test 2006 (FRVT 2006) are effected by factors related to...

Shell-dependent Blinking of CdSe-Based Core/Shell Nanocrystals

May 10, 2010

Author(s)

Seung Koo Shin, Bonghwan Chon, Sung Jun Lim, Wonjung Kim, Hyeong G. Kang, Taiha Joo, Jeeseong C. Hwang

Blinking of zinc-blende CdSe-based core/shell nanocrystals are studied as a function of shell materials. CdSe/ZnS, CdSe/ZnSe/ZnS, and CdSe/CdS/ZnS core/shell...

Theoretical Studies on the Structure of Interacting Colloidal Suspensions by Spin-Echo Small Angle Neutron Scattering

May 7, 2010

Author(s)

Xin Li, Chwen-Yang Shew, Yun Liu, Roger Pynn, Emily Liu, Kenneth W. Herwig, Gregory S. Smith, J. L. Robertson, Wei-Ren Chen

The application of the spin-echo small angle neutron scattering (SESANS) technique for structural characterization of interacting colloidal suspensions is...

Hydrolytic stability of polybenzobisoxazole and polyterephthalamide body armor.

May 6, 2010

Author(s)

Amanda L. Forster, Guillaume Messin, Kirk D. Rice, Pierre Pintus, Joannie W. Chin, Sylvain H. Petit

Previous work conducted at the National Institute of Standards and Technology (NIST) to investigate the field failures of soft body armor containing the...

Microstructural Evolution of Pd-doped Nanoscale Zero-valent Iron (nZVI) Particles in Aqueous Media and Implications for Particle Reactivity

May 6, 2010

Author(s)

Andrew A. Herzing, Weile Yan, Christopher J. Kiely, Wei-xian Zhang

Palladized zero-valent iron nanoparticles have been frequently employed to achieve enhanced treatment of halogenated organic compounds. However no detailed...

Quasiparticle Density of States Measurements in Clean Superconducting AlMn Alloys

May 6, 2010

Author(s)

Galen C. O'Neil, Daniel R. Schmidt, Nathan A. Tomlin, Joel N. Ullom

Aluminum doped with Manganese (AlMn) forms a superconducting alloy with the transition temperature suppressed by the added Manganese. We present quasiparticle...

Deactivation of Sub-Melt Laser Annealed Arsenic Ultra Shallow Junctions in Silicon During Subsequent Thermal Treatment

May 4, 2010

Author(s)

Joseph C. Woicik, D. Giubertoni, G. Pepponi, S. Gennaro, M. Bersani, M. A. Sahiner, S. P. Kelty, M. Kah, K. J. Kirkby, R. Doherty, M. A. Foad, F. Meirer, C. Streli, P. Pianetta

The use of non-equilibrium annealing approaches can produce a very high level of arsenic electrical activation in Si but subsequent thermal treatments between...

Cross Sectional Determination of Perfluorinated Compounds in the Upper Mississippi River Basin

May 4, 2010

Author(s)

Jessica L. Reiner, Shoji F. Nakayma, Mark J. Strynar, Amy D. Delinsky, Andrew B. Lindstrom

Despite efforts to develop robust analytical methods for the determination of perfluorinated compounds (PFCs) such as perfluorooctane sulfonate (PFOS) and...

SANS from P85/Water-d Under Pressure

May 4, 2010

Author(s)

Bryna Clover, Boualem Hammouda

Pluronics are triblock copolymers of PEO-PPO-PEO. Pluronic P85 forms a rich phase behavior when dissolved in water. Unimers are observed at low temperature...

Blending Different Fineness Cements to Engineer the Properties of Cement-Based Materials

May 3, 2010

Author(s)

Dale P. Bentz

Concretes are designed to fulfill specific engineering requirements, most commonly exemplified by slump, unit weight, and compressive strength. One source of...

Good Policy Makes Good Science

May 3, 2010

Author(s)

Isabel M. Beichl

Better IAQ using ASHRAE Guide

May 3, 2010

Author(s)

Andrew K. Persily, Martha Hewett

Over the years, there have been many important contributions directed towards improving IAQ in buildings, including Standard 62.1 and other publications (EPA...

Absence of the Hyperfine Magnetic Field at the Ru Site in Ferromagnetic Rare-Earth Intermetallics

May 3, 2010

Author(s)

D. Coffey, M. DeMarco, P.C. Ho, M. B. Maple, T. Sayles, Jeffrey W. Lynn, Qingzhen Huang, S. Toorongian, M. Haka

The Mossbauer Effect(ME) is frequently used to investigate magnetically ordered systems. One usually assumes that the magnetic order induces a hyperfine...

Novel CaF2 Nanocomposite with High Strength and F Ion Release

May 3, 2010

Author(s)

Hockin D. Xu, Jennifer L. Moreau, Limin Sun, Laurence Chow

Secondary caries and restoration fracture remain the two most common problems. The objectives of this study were to develop stress-bearing, fluoride-releasing...

ADVANCES IN PORE STRUCTURE CHARACTERIZATION AND PERFORMANCE PREDICTION OF PERVIOUS CONCRETES

May 3, 2010

Author(s)

Narayanan Neithalath, Dale P. Bentz, Milani S. Sumanasooriya

Pervious concrete is receiving renewed interest as a sustainable construction material for parking lots, sidewalks, and low-traffic-volume roads. A key...

Solutions for Determining Equibiaxial Substrate Strain for Dynamic Cell Culture

May 2, 2010

Author(s)

Martin Y. Chiang, Tianle Cheng, Lisa Pakstis, Joy P. Dunkers

Empirical and analytical solutions are derived in this study to determine the equibiaxial strain on a flexible substrate upon which the cells can be cultured...

Bilateral comparison of power measurement standards for KrF lasers between PTB and NIST

May 2, 2010

Author(s)

Marla L. Dowell, Christopher L. Cromer, Darryl A. Keenan, Stefan Kuck, Friedhelm Brandt

We report results of the first bilateral laser power comparison for 248-nm KrF excimer lasers accomplished by the National Metrology Institutes of Germany...

Chirp characterization of external modulators with finite extinction ratio using linear optical sampling

May 1, 2010

Author(s)

Tasshi Dennis, Paul A. Williams

We demonstrate a network monitoring technique for the frequency chirping of external modulators based on linear optical sampling. We present α parameter...

Substrate Hybridization and Rippling of Graphene Evidenced by Near-Edge X-ray Absorption Fine Structure Spectroscopy

May 1, 2010

Author(s)

Daniel A. Fischer, V. J. Lee, Patrick S. Lysaght, Sarbajit Banerjee

Interfacial interactions at graphene/metal and graphene/dielectric interfaces are likely to profoundly influence the electronic structure of graphene. We...

Nanoscale characterization of natural fibers and their composites using contact resonance force microscopy

May 1, 2010

Author(s)

Donna C. Hurley, Sandeep S. Nair, Siqun Wang

In this study, contact resonance force microscopy (CR-FM) has been used for the first time to evaluate the mechanical properties of the interphase in natural...

Reactive MALDI Mass Spectrometry of Saturated Hydrocarbons: A Theoretical Study

May 1, 2010

Author(s)

William E. Wallace, Lewandowski Hans, Meier J. Robert

Recently it has been shown that the cobaltocenium cation, prepared by the laser ablation of a CoCp(CO)2/fullerene matrix, may react with alkanes and...

Strategies for Concordance Testing

May 1, 2010

Author(s)

Carolyn Steffen, David Duewer, Margaret C. Kline, John Butler

Concordance evaluations are important to conduct to determine if there are any allelic dropout or "null alleles" present in a data set. These studies are based...

Machine Learning Study of the Heulandite Family of Zeolites

May 1, 2010

Author(s)

Shujiang Yang, Mohammed Lach-hab, Estela Blaisten-Barojas, Xiang Li, Vicky L. Karen

Heulandite and clinoptilolite form the most abundant family of natural zeolite crystals. The topology of both of them is characterized by the framework type HEU...

Effective medium approximations for modeling optical reflectance from gratings with rough edges

May 1, 2010

Author(s)

Brent C. Bergner, Thomas Germer, Thomas Suleski

Line edge roughness (LER) has been identified as a potential source of uncertainty in optical scatterometry measurements. Characterizing the effect of LER on...

Probing Stress Effects in Single Crystal Organic Transistors by Scanning Kelvin Probe Microscopy

May 1, 2010

Author(s)

L C. Teague, Oana Jurchescu, Curt A. Richter, Sanker Subramanian, John E. Anthony, Thomas Jackson, David J. Gundlach, James Kushmerick

We report scanning Kelvin probe microscopy SKPM of single crystal difluoro bistriethylsilylethynyl anthradithiophene diF-TESADT organic transistors. SKPM...

Monitoring and Controlling Oxygen Levels in Microfluidic Devices

April 30, 2010

Author(s)

Samuel Forry, Peter C. Thomas, Srinivasa R. Raghavan

Mammalian cell culture has been traditionally performed in a static oxygen concentration of 20 mol %. However, oxygen level in vivo is significantly more...

Measuring the effects of low energy ion milling on the magnetization of Co/Pd multilayers using scanning electron microscopy with polarization analysis

April 30, 2010

Author(s)

Benjamin James McMorran, Aaron C. Cochran, Randy K. Dumas, Kai Liu, Paul Morrow, Daniel T. Pierce, John Unguris

The dependence of the magnetic properties of Co/Pd multilayer films with very thin individual layers, Co(0.4nm)/Pd(0.6nm), on the energy of ion milling is...

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