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Displaying 43976 - 44000 of 143793

Feedback Control of Optically Trapped Particles

December 17, 2011
Author(s)
Jason J. Gorman, Arvind K. Balijepalli, Thomas W. LeBrun
Optical trapping is a method for manipulating micro- and nanoscale particles that is widely used in biophysics and colloid science, among other areas. This method uses optical forces to confine the position of a particle to a localized region, which is

New Equations for the Sublimation Pressure and Melting Pressure of H2O Ice Ih

December 17, 2011
Author(s)
Wolfgang Wagner, T Riethmann, Rainer Feistel, Allan H. Harvey
New reference equations, adopted by the International Association for the Properties of Water and Steam (IAPWS), are presented for the sublimation pressure and melting pressure of ice Ih as a function of temperature. These equations are based on input

Correlation between in-plane grain orientation and the reversible strain effect on flux pinning in RE-Ba 2 Cu 3 O 7-d coated conductors

December 16, 2011
Author(s)
Daniel C. van der Laan, Loren F. Goodrich, Fraser Douglas, R. Semerad, M Bauer
The pressure dependence of the critical temperature causes a reversible effect of strain on the critical current density and flux pinning strength in many high-temperature superconductors. Recent experiments on patterned coated conductor bridges have shown

Correlation Between the Pressure Dependence of the Critical Temperature and the Reversible Strain Effect on the Critical Current and Pinning Force in Bi 2 Sr 2 CaCu 2 O 8+x Wires

December 16, 2011
Author(s)
Xifeng Lu, Loren F. Goodrich, Daniel C. van der Laan, Jolene D. Splett, Najib Cheggour, T G. Holesinger, F J. Baca
Bi 2Sr 2CaCu 2O 8+x round wires are among the most promising high-temperature superconductor candidates for making high-field magnets that operate at fields above 20 Tesla. Owing to the brittle nature of high-temperature superconductors, their electro

Development and Use of the NIST Intelligent and Automated Construction Job Site Testbed

December 16, 2011
Author(s)
Kamel Saidi, Geraldine Cheok, Marek Franaszek, Christopher U. Brown, Jeremy Swerdlow, Robert R. Lipman, Itai Katz, Mani Golparvar-Fard, Paul Goodrum, Manu Akula, Gabriel Dadi, Behshad Ghadimi
The Intelligent and Automated Construction Job Site (IACJS) Testbed is a large laboratory facility that was established at the National Institute of Standards and Technology (NIST) in 2011. The creation of the testbed was motivated by the need for such

Development of a combinatorial characterization scheme for high-throughput investigations of hydrogen storage materials.

December 16, 2011
Author(s)
Jason Hattrick-Simpers, Z. Tan, H. Oguchi, Chun Chiu, Edwin J. Heilweil, James E. Maslar, Leonid A. Bendersky
In order to reliably increase the throughput of materials measured for hydrogen storage properties, a complete high-throughput characterization scheme has been developed that accurately measures the hydrogen storage properties of materials in quantities

First-Principles Calculation of the Non-Adiabatic Spin Transfer Torque in Ni and Fe

December 16, 2011
Author(s)
Keith Gilmore, Ion Garate, Allan H. MacDonald, Mark D. Stiles
The magnetization dynamics of a ferromagnet subjected to an electrical current are given by an extension of the Landau-Lifshitz-Gilbert equation that contains two additional terms, the adiabatic and non-adiabatic spin-transfer torques. First-principles

Higher-order photon correlations in pulsed photonic crystal nanolasers

December 16, 2011
Author(s)
D. Elvira, X. Hachair, Varun Verma, R. Braive, G. Beaudoin, I. Robert-Philip, I. Sagnes, Burm Baek, Sae Woo Nam, E Dauler, I. Abram, Martin Stevens, A. Beveratos
We report on the higher-order photon correlations of a high-Β nanolaser under pulsed excitation at room temperature. Using a multiplexed four-element superconducting single-photon detector we measured g (n)(0) with n = 2,3,4. All orders of correlation

Insensitivity of Sub-Kelvin Electron-Phonon Coupling to Substrate Properties

December 16, 2011
Author(s)
Jason M. Underwood, Peter J. Lowell, Galen C. O'Neil, Joel N. Ullom
We have examined the role of the substrate on electron-phonon coupling in normal metal films of Mn-doped Al at temperatures below 1 K. Normal metal-insulator-superconductor junctions were used to measure the electron temperature in thin metal films as a

Spherical indentation testing of poroelastic relaxations in thin hydrogel layers

December 16, 2011
Author(s)
Edwin Chan, Yuhang Hu, Peter M. Johnson, Zhigang Suo, Christopher Stafford
In this work, we present the Poroelastic Relaxation Indentation (PRI) testing approach for quantifying the mechanical and transport properties of thin layers of poly(ethylene glycol) hydrogel materials with thicknesses on the order of 200 m. Specifically

Atomistic Ensemble Modeling and Small-Angle Neutron Scattering of Intrinsically Disordered Protein Complexes: Applied to Minichromosome Maintenance Protein

December 15, 2011
Author(s)
Susan Krueger, Jae-Ho Shin, Sindhushree NMN Raghunandan, Joseph E. Curtis, Zvi Kelman
The minichromosome maintenance (MCM) proteins are thought to function as the replicative helicases in archaea and eukarya. The solution structure of the N-terminal portion of the MCM complex from the archaeon Methanothermobacter thermautotrophicus {N-mtMCM

Experimentally Based Methodology for Charge Pumping Bulk Defect Trapping Correction

December 15, 2011
Author(s)
Jason T. Ryan, Richard G. Southwick, Jason P. Campbell, Kin P. Cheung, Chadwin Young, John S. Suehle
We develop a simple experimental approach to remove bulk trap contributions from charge pumping data collected on devices which suffer from large amounts of bulk dielectric electron trapping. The approach is more desirable and easier to implement than
Displaying 43976 - 44000 of 143793
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