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Journals

Quasielastic neutron scattering experiments of orthorhombic ammonia borane

May 16, 2008

Author(s)

Nancy J. Hess, Michael R. Hartman, Craig Brown, Eugene Mamontov, Abhijeet Karkamkar, David J. Heldebrant, Luke Daemen, Tom Autrey

Combinatorial study of the crystallinity boundary in the HfO2-TiO2-Y2O3 system using pulsed laser deposition library thin films

May 16, 2008

Author(s)

Peter K. Schenck, Jennifer L. Klamo, Nabil Bassim, Peter G. Burke, Yvonne B. Gerbig, Martin L. Green

HfO2-TiO2-Y2O3 is an interesting high-k dielectric system. Combinatorial library films of this system enable the study of the role of composition on phase...

Metrology Triangle Using a Watt Balance, a Calculable Capacitor, and a Single- Electron Tunneling Device

May 16, 2008

Author(s)

Mark W. Keller, Francois P. Piquemal, Nicolas Feltin, Barthelemy Steck, Laurent Devoille

The combination of a Watt balance, a calculable capacitor, and a single-electron tunneling device forms a triangle that yields a value for the single-electron...

Quantitation of HER2 and Telomerase Biomarkers in Solid Tumors with IgY Antibodies and Nanocrystal Detection

May 15, 2008

Author(s)

Yan Xiao, X Gao, G Gannot, M Emmert-Buck, S Srivastava, Paul D. Wagner, Michael D. Amos, Peter E. Barker

Finite element analysis of a crack tip in silicate glass: No evidence for a plastic zone

May 15, 2008

Author(s)

Theo Fett, G Rizzi, D Creek, Susanne Wagner, J.P. Guinn, JM Lopez-Cepero, Sheldon M. Wiederhorn

Recently, the claim was made that cracks in silicate glasses propagate by the nucleation, growth, and coalescence of cavities at crack tips, which is the same...

A Passive Heterodyne HEB Imager Operating at 850 GHz

May 15, 2008

Author(s)

Eyal Gerecht, Dazhen Gu, Lixing You, Sigfrid Yngvessen

We report the development and characterization of a passive heterodyne hot electron bolometer (HEB) imager operating at 850 GHz. HEB detectors provide...

Virtual Pervious Concrete: Microstructure, Porosity Percolation, and Permeability Prediction

May 14, 2008

Author(s)

Dale P. Bentz

As the usage of pervious concrete continues to increase dramatically, a better understanding of the linkages between microstructure, transport properties, and...

The Impact of the Dielectric / Semiconductor Interface on Microstructure and Charge Carrier Transport in High-Performance Polythiophene Transistors

May 14, 2008

Author(s)

Youngsuk Jung, Regis J. Kline, Eric K. Lin, Daniel A. Fischer, Michael F. Toney, Martin Heeney, Iain McCulloch, Dean DeLongchamp

The performance of organic field-effect transistors (OFETs) significantly depends on the properties of the interface between the semiconductor and gate...

Measurement of the Concentration of Bacillus Anthracis Spores by DNA Content: Comparison to Plate and Microscope Counts and the Use of Inactivated Materials

May 13, 2008

Author(s)

Jamie L. Almeida, Bruce Harper, Kenneth D. Cole

Reliable measurements of the concentration of Bacillus anthracis (BA) spore suspensions are essential for the production of useful reference materials that can...

The Ability of Actinic Light to Modify the Bacteriorhodopsin Photocycle Revisited: Heterogeneity vs. Photocooperativity

May 13, 2008

Author(s)

R W. Hendler, R I. Shrager, Curtis W. Meuse

In 1995, we reviewed the evidence both for photocooperativity and heterogeneity as possible explanations for the ability of actinic light to modify the kinetics...

Electric field control of the magnetic state in Bi Fe O3 single crystals

May 12, 2008

Author(s)

Seoungsu Lee, William D. Ratcliff, S.-W. Cheong, V. Kiryukhin

Single crystals of multiferroic BiFeO 3 were investigated using neutron scattering. Application of an electric field reversibly switches ferroelastic domains...

How the User can Improve Fingerprint Image Quality

May 12, 2008

Author(s)

Mary F. Theofanos, Ross J. Micheals, Shahram Orandi, Brian C. Stanton, Nien F. Zhang

Traditionally the biometric field has viewed the user as a passive source of the biometric sample rather than an interactive component of the biometric system...

Subspace Approximation of Face Recognition Algorithms: An Empirical Study

May 12, 2008

Author(s)

P J. Phillips, Pranab Mohanty, Sudeep Sarkar, Rangachar Kasturi

We present a theory for constructing linear subspace approximations to face recognition algorithms and empirically demonstrate that a surprisingly diverse set...

Curved–straight neutron guide system with uniform spatial intensity distribution

May 10, 2008

Author(s)

David Mildner, Jeremy Cook

The spatial intensity distribution of neutrons emerging from a curved guide is asymmetric, and straight guide sections are sometimes appended to curved guides...

Ab Initio Studies of the Spin-Transfer Torque in Tunnel Junctions

May 9, 2008

Author(s)

Christian Heiliger, Mark D. Stiles

We calculate the spin-transfer torque in Fe/MgO/Fe tunnel junctions and analyze the results in comparison to all-metallic junctions. We show that the spin...

The relationship between local order, long range order, and sub-bandgap defects in hafnium oxide and hafnium silicate films

May 9, 2008

Author(s)

D. H. Hill, Robert A. Bartynski, Nhan Van Nguyen, Albert Davydov, Deane Chandler-Horowitz, Martin M. Frank

We have measured X-ray absorption spectra (XAS) at the oxygen K-edge for hafnium oxide (HfO2) films grown by chemical vapor deposition (CVD) and atomic layer...

Stability Phase-Fields in the and Pyrochlore Formation in Sections of the Bi₂O₃-Al₂O_3-Nb₂O₅

May 8, 2008

Author(s)

Terrell A. Vanderah, Jorge T. Guzman, Juan C. Nino

Bismuth niobate-based ceramic materials are of interest for embedded elements such as capacitors, resonators, and filters because they exhibit high relative...

Deprotecting Thioacetyl-Terminated Terphenyldithiol for Assembly on Gallium Arsenide

May 8, 2008

Author(s)

D Krapchetov, H Ma, AKY Jen, Daniel A. Fischer, Y-L Loo

We characterize the assembly of terphenyldithiol (TPDT) on gallium arsenide from ethanol (EtOH) and tetrahydrofuran (THF) as a function of ammonium hydroxide...

Investigation of Electron Hole Recombination-Activated Partial Dislocations and Their Behavior in 4H-SiC Epitaxial Layers

May 8, 2008

Author(s)

Yi Chen, Ning Zhang, M Dudley, JOSHUA CALDWELL, Kendrick Liu, ROBERT STAHLBUSH, XIANRONG HUANG, A T. Macrander, David R. Black

Electron hole recombination-activated partial dislocations in 4H silicon carbide homoepitaxial layers and their behavior have been studied using synchrotron X...

Nature and Tunability of Enhanced Hydrogen Binding in Metal−Organic Frameworks with Exposed Transition Metal Sites

May 6, 2008

Author(s)

Wei Zhou, Taner N. Yildirim

Metal−organic framework (MOF) compounds with exposed transition-metal (TM) sites were recently found to exhibit significantly larger experimental heats of...

Directional Routing Protocols for Ad Hoc Networks

May 6, 2008

Author(s)

Hamid Gharavi, Bin Hu

This paper presents a directional routing approach for multihop ad-hoc networks, which has been applied to two on-demand routing protocols: namely Dynamic...

Frequency evaluation of the doubly forbidden ¹S₀–³P₀ transition in bosonic ¹⁷⁴Yb

May 6, 2008

Author(s)

Nicola Poli, Zeb Barber, Nathan D. Lemke, Christopher W. Oates, Tara Fortier, Scott Diddams, Leo W. Hollberg, James C. Bergquist, Anders Brusch, Steven R. Jefferts, Thomas P. Heavner, Tom Parker

We report an uncertainty evaluation of an optical lattice clock based on the 1S 0 – 3P 0 transition in the bosonic isotope 174Yb using magnetically induced...

Electronic Wiring of a Multi-Redox Site Membrane Protein in a Biomimetic Surface Architecture

May 5, 2008

Author(s)

Marcel G. Friedrich, Joseph W. Robertson, Dieter Walz, Wolfgang Knoll, Renate L. Naumann

Electronic coupling of proteins to electrodes is an active field of research. Electronic coupling of membrane proteins remains difficult because the proteins...

Close Proximity Self-Aligned Shadow Mask for Sputter Deposition Onto a Membrane or Cavity

May 5, 2008

Author(s)

Ravi Kummamuru, L Hu, Lawrence P. Cook, M Y. Efremov, E A. Olson, Martin L. Green, L H. Allen

In this paper we report fabrication of a shadow mask designed for sputtering into cavities or on the back surface of freestanding silicon nitride (SiNx)...

Nanotwin formation and its physical properties and effect on reliability of copper interconnects.

May 3, 2008

Author(s)

Di Xu, Vinay Sriram, Vidvuds Ozolins, Jenn-Ming Yang, K. N. Tu, Gery R. Stafford, Carlos R. Beauchamp, Inka Zienert, Holm Geisler, Petra Hofmann, Ehrenfried Zschech

Ultra-fine grained copper with a large amount of nano-scale twin boundaries has high mechanical strength and maintain normal electrical conductivity. The...

Glass-Blown Spherical Microcells for Chip-Scale Atomic Devices

May 2, 2008

Author(s)

E. J. Eklund, A Shkel, Svenja A. Knappe, Elizabeth Donley, John Kitching

This paper presents an application of micro glass blowing, in which multiple glass spheres are simultaneously shaped on top of a silicon wafer and subsequently...

Ca Pre-Rinse Greatly Increases Plaque and Plaque Fluid F After a F Rinse

May 1, 2008

Author(s)

Gerald L. Vogel, Gary E. Schumacher, Laurence C. Chow, Shozo Takagi, Clifton M. Carey

This study examines if a Ca pre-rinse/F rinse increased plaque and plaque fluid F relative to the F rinse alone. Subjects (n = 13) accumulated plaque two days...

Optical fiber metrology

May 1, 2008

Author(s)

Gordon W. Day, Douglas L. Franzen, Kent B. Rochford

The development of metrology to support the optical fiber communications industry is an excellent case study of how stakeholders ? fiber manufacturers, their...

Designing high electron mobility transistor heterostructures with quantum dots for efficient, number-resolving photon detection

May 1, 2008

Author(s)

Mary A. Rowe, Eric Gansen, M. Greene, Danna Rosenberg, Todd E. Harvey, Mark Su, Robert Hadfield, Sae Woo Nam, Richard P. Mirin

We describe the design of the epitaxial layers for an efficient, photon-number-determining detector that utilizes a layer of self-assembled quantum dots as an...

Methods for Producing Optical Coherent State Superpositions

May 1, 2008

Author(s)

Scott C. Glancy, Hilma M. Vasconcelos

We discuss several methods to produce superpositions of optical coherent states (also known as "cat states"). Cat states have remarkable properties which could...

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