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Journals

Melting and Spread of Polymers in Fire with the Particle Finite Element Method

February 19, 2010

Author(s)

Eugenio Onate, Riccardo Rossi, Sergio R. Idelsohn, Kathryn Butler

A new computational procedure for analysis of the melting and flame spread of polymers under fire conditions is presented. The method, termed Particle Finite

Quantitative assessment of sample stiffness and sliding friction from force curves in atomic force microscopy

February 18, 2010

Author(s)

Jon R. Pratt, Gordon A. Shaw, Lee Kumanchik, Nancy Burnham

It has long been recognized that the angular deflection of a typical atomic force microscope (AFM) cantilever under normal loading conditions can be profoundly

Coexisting Magnetic Order and Cooperative Paramagnetism in the Stuffed Pyrochlore Tb_2+xTi_2-2xNb_xO₇

February 18, 2010

Author(s)

Benjamin Ueland, Jason S. Gardner, A. J. Williams, M. L. Dahlberg, J.G. Kim, Yiming Qiu, John R. Copley, P. Schiffer, R J. Cava

Neutron scattering and magnetization measurements have been performed on the stuffed pyrochlore system Tb 2+xTi 2-2xNb xO 7. We find that despite the

Fluorinated Copolymer Nanoparticles for Multimodal Imaging Applications

February 18, 2010

Author(s)

Mark M. Bailey, Christine M. Mahoney, Elodie Dempah, Jeffrey M. Davis, Matthew Becker, Supang Khondee, Eric J. Munson, Cory J. Berkland

Nanomaterials have emerged as valuable tools in biomedical imaging techniques, such as magnetic resonance imaging (MRI), fluorescence, positron emission

A Combinatorial Study of Thin Film Process Variables Using Microhotplates

February 17, 2010

Author(s)

David L. Lahr, Joshua L. Hertz, Stephen Semancik

A major goal of materials research over the past two decades has been the development of high throughput methods for rapid discovery and optimization of

Frequency Comparison of Two High-Accuracy Al+ Optical Clocks

February 17, 2010

Author(s)

Chin-Wen Chou, David Hume, J.C. Koelemeij, David J. Wineland, Till P. Rosenband

We have constructed an optical clock with a fractional frequency inaccuracy of 8.6e-18, based on quantum logic spectroscopy of an Al+ ion. A simultaneously

The Effects of Humidity and Surface Free Energy on Adhesion Force between AFM Tip and a Silane Self-Assembled Monolayer Film

February 17, 2010

Author(s)

Chien-Chao Huang, Lijiang Chen, , Xiaohong Gu, Minhua Zhao, Tinh Nguyen, Sanboh Lee

The relationship between AFM probe-sample adhesion force and relative humidity (RH) at five different levels of surface free energy (γs) of an organic self

Optimized continuum from a photonic crystal fiber for broadband time-resolved coherent anti-Stokes Raman scattering

February 17, 2010

Author(s)

Young Jong Lee, Sapun Parekh, Yeon Ho Kim, Marcus T. Cicerone

We demonstrate that an optimized 2-pulse broadband coherent anti-Stokes Raman scattering (CARS) technique can be used to simultaneously measure vibrational

Simultaneous Measurement of Magnetic Vortex Polarity and Chirality using Scanning Electron Microscopy with Polarization Analysis (SEMPA)

February 16, 2010

Author(s)

Seok-Hwan Chung, Daniel T. Pierce, John Unguris

The magnetic vortex structure is an equilibrium configuration frequently found in patterned magnetic nanostructures. It is characterized by an in-plane curling

Evidence for the involvement of DNA repair enzyme NEIL1 in nucleotide excision repair of (5'R)- and (5'S)-8,5'-Cyclo-2'-deoxyadenosines

February 16, 2010

Author(s)

Pawel Jaruga, Yan Xiao, Vladimir Vartanian, R S. Lloyd, Miral M. Dizdar

The DNA repair enzyme NEIL1 is a DNA glycosylase that is involved in the first step of base excision repair (BER) of oxidatively induced DNA damage. NEIL1

Tuning magnetostatic interaction in single-crystalline nanodot arrays with in-plane easy axes

February 16, 2010

Author(s)

Jung Phil Seo, Tae Hwan Kim, Seok-Hwan Chung, Youngtaek Oh, Jaehyuk Choi, Young Kuk

We have fabricated an ultrahigh-vacuum-processed, ordered, single-crystalline nanodot array. By mapping the magnetization of the nanodots with spin polarized

Heralded, pure-state single-photon source based on a Potassium Titanyl Phosphate waveguide

February 15, 2010

Author(s)

Zachary H. Levine, Jingyun Fan, Jun Chen, Alexander E. Ling, Alan L. Migdall

WWe analyze the generation of single spatial mode, spectrally uncorrelated photon pairs via type II spontaneous parametric downconversion in a Potassium Titanyl

Ultrafast Terahertz Spectroscopy for Measuring Carrier Dynamics in Nanoscale Photovoltaic Materials

February 15, 2010

Author(s)

Okan Esenturk, Paul A. Lane, Joseph S. Melinger, Edwin J. Heilweil

Femtosecond pump-probe methods are useful tools for investigating transient electronic and vibrational states of conducting materials and molecular

Steady-state and transient photoconductivity in c-axis GaN nanowires grown by nitrogen-plasma-assisted molecular beam epitaxy

February 12, 2010

Author(s)

Norman A. Sanford, Paul T. Blanchard, Kristine A. Bertness, Lorelle Mansfield, John B. Schlager, Aric W. Sanders, Alexana Roshko, Beau Burton, Steven George

Analysis of steady-state and transient photoconductivity measurements at room temperature performed on c-axis oriented GaN nanowires yielded estimates of free

Challenges in Continuum Modeling of Intergranular Fracture

February 11, 2010

Author(s)

Valerie R. Coffman, James P. Sethna

Intergranular fracture in polycrystals is often simulated by finite elements coupled to a cohesive-zone model for the interfaces, requiring cohesive laws for

Local Excitation of Ferromagnetic Resonance and Its Spatially Resolved Detection With an Open-Ended Radio-Frequency Probe

February 10, 2010

Author(s)

Pavel Kabos

A local excitation of ferromagnetic resonance (FMR) and its detection were performed by using an open-ended radio frequency (RF) probe. THe RF probe is composed

Interfacial reactions of Ba2YCu3O6+x with Coated Conductor Buffer Layer, LaMnO3

February 10, 2010

Author(s)

Winnie K. Wong-Ng, Guangyao Liu, Lawrence P. Cook, James A. Kaduk

Chemical interactions between the Ba2YCu3O6+x superconductor and the LaMnO3 buffer layers employed in coated conductors have been investigated experimentally by

Rational synthesis and characterization of a new family of low thermal conductivity misfit layered compounds [(PbSe)0.99]m[(WSe2)]n

February 9, 2010

Author(s)

Ian M. Anderson, Michael D. Anderson, Qiyin Lin, Mary Smeller, Colby L. Heideman, Paul Zschack, Mikio Koyano, Robert Kykyneshi, Douglas A. Keszler, David C. Johnson

We describe here a general synthesis approach for the preparation of new families of misfit layer compounds and demonstrate its effectiveness through the

Viewpoint on "Symmetry breaking in the zero-energy Landau level in bilayer graphene"

February 8, 2010

Author(s)

Shaffique Adam

A Heat Transfer Model for Firefighters Protective Clothing, Continued Developments in Protective Clothing Modeling

February 7, 2010

Author(s)

James R. Lawson, William E. Mell, Kuldeep R. Prasad

In the year 2000, a paper entitled A Heat Transfer Model for Firefighters Protective Clothing was published in Volume 36, No. 1, of Fire Technology, and it

Magnetic Properties of Zr_(9)Ni_(11)Intermetallic Compound

February 7, 2010

Author(s)

Virgil Provenzano, Robert D. Shull, Richard M. Waterstrat, Lawrence H. Bennett, Edward Della Torre, H. Seyoum

We report on a very interesting magnetic behavior in the intermetallic compound Zr_(9)Ni_(11), namely, (i) spin-glass behavior and (ii) fluctuations in

Measurement Bandwidth Extension Using Multisine Signals: Propagation of Error

February 6, 2010

Author(s)

Catherine A. Remley, Dominique Schreurs, M. Myslinski, Dylan F. Williams

We describe a post-processing technique that can extend the effective measurement bandwidth of narrowband vector receivers by phase aligning overlapping

Optimization of spin-valve parameters for magnetic bead trapping and manipulation

February 6, 2010

Author(s)

Wendy R. Altman, John M. Moreland, Stephen E. Russek, Victor M. Bright

Magneto-optic Kerr effect (MOKE) and magnetoresistance (MR) measurements were used to measure the switching characteristics of spin-valve (SV) arrays currently

Comparison of Large-Signal-Network-Analyzer Calibrations

February 5, 2010

Author(s)

Dylan F. Williams, Catherine A. Remley, Joe Gering, Grand Aivazian

We develop a procedure and metrics for comparing large-signal-network-analyzer calibrations. The metrics we develop provide a bound on differences between

Development of a Candidate Reference Measurement Procedure for the Determination of 25-hydroxyvitamin D3 and 25-hydroxyvitamin D2 in Human Serum Using Isotope-Dilution Liquid Chromatography/Tandem Mass Spectrometry

February 5, 2010

Author(s)

Susan S. Tai, Mary Bedner, Karen W. Phinney

Vitamin D exists in two major forms, vitamin D3 and vitamin D2. Vitamin D helps the body absorb calcium and promote optimal growth. Both forms of vitamin D are

Lateral force microscope calibration using pivot loading of rectangular cantilevers

February 5, 2010

Author(s)

Koo-Hyun Chung, Mark Reitsma

This note outlines a calibration method for atomic force microscope friction measurement that uses the pivot method of Bogdanovic et al [Colloids Surf. B 19

Remarks on the Undecidability of the Quantum Halting Problem

February 5, 2010

Author(s)

David Song

The halting problem is a decision problem first posed and proved by Alan Turing in 1936. With the recent surge of interest in quantum computation, one is led to

Predicted Functions of MdmX in Fine Tuning the Response of p53 to DNA Damage

February 5, 2010

Author(s)

Sohyoung Kim, Mirit I. Aladjem, Geoffrey B. McFadden, Kurt W. Kohn

Tumor suppressor protein p53 is negatively regulated by two structurally homologous proteins, Mdm2 and MdmX. In contrast to Mdm2, MdmX lacks ubiquitin ligase

The oxidative DNA glycosylases of Mycobacterium tuberculosis exhibit different substrate specificities from their Escherichia coli counterparts

February 4, 2010

Author(s)

Yin Guo, Viswanath Bandaru, Pawel Jaruga, Xiaobei Zhao, Cynthia Burrows, Shigenori Iwai, Miral M. Dizdar, Jeffrey Bond, Susan Wallace

The DNA glycosylases function in the first step of the base excision repair process that is responsible for removing endogenous oxidative purine and pyrimidine

Frequentist coverage properties of uncertainty intervals for weak Poisson signals in the presence of background

February 3, 2010

Author(s)

Kevin J. Coakley, Jolene D. Splett, David S. Simons

We construct uncertainty intervals for weak Poisson signals in the presence of background. We consider the case where a primary experiment yields a realization

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