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Journals

Alternative Analyses of Measurements of the Planck Constant

July 5, 2012

Author(s)

Blaza Toman

We compare different methods for the adjustment of the Planck constant using recent, inconsistent data. First we discuss the popular Birge ratio method. By...

Propagation of Vortex Electron Wave Functions in a Magnetic Field

July 5, 2012

Author(s)

Gregg M. Gallatin, Benjamin McMorran

The physics of coherent beams of photons carrying axial orbital angular momentum (OAM) is well understood and such beams, sometimes known as vortex beams, have...

Viscoelastic and poroelastic relaxations of polymer-loaded hydrogels

July 5, 2012

Author(s)

Blessing Deeyaa, Christopher Stafford, Edwin Chan, Peter M. Johnson

In this work, we study the viscoelastic and poroelastic contributions on the relaxation behavior of a polymer-loaded hydrogel using a recently develop...

First-principles studies of the atomic, electronic and magnetic structure of alpha-MnO2 (cryptomelane)

July 4, 2012

Author(s)

Eric Cockayne, Lan (. Li

First-principles density functional theory calculations are used to investigate alpha-MnO2, a structure containing a framework of corner and edge sharing MnO6...

Neurite Outgrowth Inhibition by Lithium Chloride in Differentiating Progenitor Cell Cultures

July 4, 2012

Author(s)

Kavita M. Jeerage, Tammy L. Oreskovic

Neuron-specific in vitro screening strategies have the potential to accelerate the evaluation of chemicals or nanomaterials for neurotoxicity. We examined the...

Observation of a superfluid Hall effect

July 3, 2012

Author(s)

Lindsay J. LeBlanc, Karina K. Jimenez Garcia, Ross A. Williams, Matthew C. Beeler, Abigail R. Perry, William D. Phillips, Ian B. Spielman

Measurement techniques based upon the Hall effect are essential tools in condensed matter physics. Here, we report the first observation of a Hall effect in an...

From Antiferromagnetic Insulator to Correlated Metal in Pressurized and Doped LaMnPo

July 3, 2012

Author(s)

J.W. Simonson, Z. P. Yin, M. Pezzoli, J. Guo, J. Liu, K. Post, A. Efimenko, N. Hollmann, Z. Hu, H.-J. Lin, C.-T. Chen, C. Marques, V. Leyva, G. Smith, Jeffrey W. Lynn, L. L. Sun, G. Kotliar, D.N. Basov, L.H. Tjeng, M.C. Aronson

More Durable or Vulnerable? --- Effect of Nanoparticles on Long-Term Performance of Polymeric Nanocomposites during UV Exposure

July 2, 2012

Author(s)

Xiaohong Gu, Minhua Zhao, Stephanie S. Watson, Tinh Nguyen, Joannie W. Chin, Jonathan W. Martin, Dongmei Zhe, Guodong Chen

Polymers are widely used as exterior coatings in buildings, bridges, aircrafts, and automobiles for both protection and aesthetic purposes. However, the...

Pigment and Nanofiller Photoreactivity Database

July 2, 2012

Author(s)

Stephanie S. Watson, I-Hsiang Tseng, Tarek Marray, Bastien T. Pellegrin

The service life and durability of nanocomposites that contain fillers are affected by photocatalytic properties of these fillers, particularly narrow band gap...

Kinetics of H atom attack on unsaturated hydrocarbons using spectral uncertainty propagation and minimization techniques

July 2, 2012

Author(s)

David A. Sheen, Claudette M. Rosado-Reyes, Wing Tsang

Unsaturated hydrocarbons are an important component of hydrocarbon fuels and intermediates in their oxidation. Under rich conditions, H atom attack is one of...

100 Years of Superconductivity

July 2, 2012

Author(s)

Richard L. Kautz

The 100th anniversary of the discovery of superconudctivity by Heike Kamerlingh Onnes was celebrated in 2011 at the Superconductivity Centennial Conference held...

In-situ Polarized 3He system for the Magnetism Reflectometer at the Spallation Neutron Source

July 2, 2012

Author(s)

Thomas R. Gentile, X Tong, C Y. Jiang, V Lauter, H. Ambaye, D. Brown, L Crow, R J. Goyette, W-T Lee, A. Parizzi

We report on the in-situ polarized 3He neutron polarization analyzer developed for the time-of-flight Magnetism Reflectometer (MAGICS) at the Spallation Neutron...

Large Eddy Simulation of Wind Loads on a Low-Rise Structure and Comparison with Wind Tunnel Results

July 2, 2012

Author(s)

isam janajreh, Emil Simiu

This work presents estimates of time histories of pressure coefficients at several taps on the roof of a 1/200 model of a 200 x 100 x 20 ft low-rise building...

The role of probe shape on the initiation of metal plasticity in nanoindentation

July 1, 2012

Author(s)

Li Ma, Dylan Morris, Stefhanni Jennerjohn, David Bahr, Lyle E. Levine

The dislocation nucleation stress of crystalline materials is frequently estimated from the maximum shear stress assuming Hertzian contact up to the first pop...

Small-Angle Scattering from Branched Polymers

July 1, 2012

Author(s)

Boualem Hammouda

The single-polymer form factor is worked out for branched polynmers using a scaling argument in order to recover the low-Q Porod exponent characterisitc of the...

Coriolis Analysis of Several High-Resolution Infrared Bands of Bicyclo [1.1.1]pentane-d0 and -d1*

July 1, 2012

Author(s)

Alfons Weber, A. Perry, M.A. Martin, J. W. Nibler, A. Maki, T. Masiello, T. A. Blake

High resolution infrared absorption spectra have been analyzed for two bicycle[1.1.1]pentane isotopologues, C5H8 (-d0) and C5H7D (-d1), where in the latter the...

Electromagnetic Properties of Iron Oxide Corrosion Product Powders at Radio Frequencies

July 1, 2012

Author(s)

Sung Kim, Jack T. Surek, James R. Baker-Jarvis, Virgil Provenzano

We calculated the refractive index from Sparameter data for corrosion samples tested in waveguide from 12.4 GHz to 110 GHz. This approach minimizes the modal...

A Verification Method for Noise-Temperature Measurements on Cryogenic Low-Noise Amplifiers

July 1, 2012

Author(s)

Dazhen Gu, James P. Randa, Robert L. Billinger, Dave K. Walker

We report a verification method for noise-temperature(NT) measurements on cryogenic low-noise amplifiers (LNAs) at liquid helium temperature. The method uses a...

Simple Test and Modeling of RFID Tag Backscatter

July 1, 2012

Author(s)

Daniel G. Kuester, David R. Novotny, Jeffrey R. Guerrieri, Aniwar Ibrahim, Zoya Popovic

We consider here worst-case analysis of backscatter from passive radio frequency identification (RFID) tags. The basis is a figure of merit "B" to relate link...

Improved performance of the ECCS experiment at PTB

July 1, 2012

Author(s)

Hansjoerg Scherer, Benedetta Camarota, Mark W. Keller, Sergey Lotkhov

Recent improvements on the ECCS experiment at PTB are reported. A 5-junction single-electron R-pump is shown to shuttle electrons with a relative transfer error...

UV-Assisted Alcohol Sensing with Zinc Oxide Functionalized Gallium Nitride Nanowires

July 1, 2012

Author(s)

Ritu Bajpai, Abhishek Motayed, Albert Davydov, Kristine A. Bertness, Mona E. Zaghloul

Alcohol sensors using gallium nitride (GaN) nanowires (NWs) functionalized with zinc oxide (ZnO) nanoparticles have been demonstrated. These sensors operate at...

In Situ and Ex Situ Diagnosis of Nanoscale Electrochemical Processes Using Miniature All-Solid-State Li-Ion Batteries

July 1, 2012

Author(s)

Vladimir Oleshko, Paul M. Haney, Dmitry A. Ruzmetov, Henri Lezec, Amit Agrawal, Albert Davydov, Kil-Won Moon, Sergiy Krylyuk, Mihaela M. Tanase, Alec Talin, Khim Karki, Kamal Baloch, John Cumings

Out-of-plane Stokes imaging polarimeter for early skin cancer diagnosis

July 1, 2012

Author(s)

P. Ghassemi, Paul Lemaillet, Thomas Germer, J. W. Shupp, S. Venna, M. E. Boisvert, K. E. Flanagan, M. H. Jordan, J. C. Ramella-Roman

Optimal treatment of skin cancer before it metastasizes depends critically on early diagnosis and treatment. Imaging spectroscopy and polarized remittance have...

Confocal Microscopy Analysis of Breech Face Marks on Fired Cartridge Cases from Ten Consecutively Manufactured Pistol Slides

July 1, 2012

Author(s)

Xiaoyu Alan Zheng, Robert M. Thompson, Todd Weller

Ten (10) pistol slides with consecutively manufactured breech faces, were obtained from Sturm, Ruger Co, Inc. A total of nine (9) test fires from each pistol...

LiBH₄•NH₃BH₃: A New Lithium Borohydride Ammonia Borane Compound with a Novel Structure and Favorable Hydrogen Storage Properties

July 1, 2012

Author(s)

Junhong Luo, Hui Wu, Wei Zhou, Xiangdong Kang, Zhanzhao Fang, Ping Wang

Mechanically milling ammonia borane and lithium borohydride and lithium borohydride in equivalanet molar ration results in the formation of a new complex, LiBH...

Proton Hopping and Long-Range Transport in the Protic Liquid [Im][TFSI], Probed by Pulsed-Field Gradient NMR and Quasi-Elastic Neutron Scattering

July 1, 2012

Author(s)

Megan L. Hoarfrost, Madhu Sudan Tyagi, Rachel A. Segalman, Jeffrey A. Reimer

Protic ionic liquids are promising candidates for a wide variety of electrochemical applications owing to their high proton conductivity, good thermal and...

Bio-inspired nanopore-based sensors

June 30, 2012

Author(s)

John J. Kasianowicz

Randomized Benchmarking of Multiqubit Gates

June 29, 2012

Author(s)

John P. Gaebler, Adam M. Meier, Ting Rei Tan, Ryan S. Bowler, Yiheng Lin, David Hanneke, John D. Jost, Jonathan Home, Emanuel H. Knill, Dietrich G. Leibfried, David J. Wineland

As experimental platforms for quantum information processing continue to mature, characterization of the quality of unitary gates that can be applied to their...

A versatile light-emitting-diode-based spectral response measurement system for photovoltaic device characterization

June 29, 2012

Author(s)

Behrang H. Hamadani, John F. Roller, Brian P. Dougherty, Howard W. Yoon

An absolute differential spectral response measurement system for solar cells is presented. The system couples an array of light emitting diodes (LEDs) with an...

Evaluation of 3D Interest Point Detection Techniques via Human-generated Ground Truth

June 29, 2012

Author(s)

Afzal A. Godil, Helin Dutagaci

In this paper, we present an evaluation strategy based on human-generated ground truth to measure the performance of 3D interest point detection techniques. We...

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