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Displaying 18626 - 18650 of 73832

Poly(sulfobetaine methacrylate)s as Electrode Modifiers for Inverted Organic Electronics

January 14, 2015
Author(s)
Hyunbok Lee, Egle Puodziukynaite, Dean DeLongchamp, Todd Emrick, Alejandro Briseno
We demonstrate the use of poly(sulfobetaine methacrylate) (PSBMA), and its pyrene-containing copolymer, as solution-processable work function reducers for inverted organic electronic devices. A notable feature of PSBMA is its orthogonal solubility relative

Bottom-up processing and low temperature transport properties of polycrystalline SnSe

January 13, 2015
Author(s)
Zhen-Hua Ge, Kaya Wei, Hutton Lewis, Joshua Martin, George S. Nolas
A simple hydrothermal approach was employed to synthesize SnSe nanorods. Micro sized flower shaped crystals were obtained under reaction temperatures below 180°C and nanorods were obtained at a reaction temperature of 180°C, the "flowers" changed to rods

How Oxidation and Dissolution in Diabase and Granite Control Porosity during Weathering

January 13, 2015
Author(s)
Ekaterina Bazilevskaya, Gernot Rother, David F. Mildner, Milan Pavich, David Cole, Maya P. Bhatt, Lixin Jin, Carl I. Steefel, Susan L. Brantley
Weathering extends to shallower depths on diabase than granite ridgetops despite similar climate and geomorphological regimes of despite similar climate and geomorphological regimes of denudation in the Virginia (USA) piedmont. Deeper weathering has been

Reversing hydride-ion formation in quantum-information experiments with Be+

January 12, 2015
Author(s)
Brian C. Sawyer, Justin G. Bohnet, Joseph W. Britton, John J. Bollinger
We demonstrate photodissociation of BeH + ions within a Coulomb crystal of thousands of 9Be + confined in a Penning trap. The BeH + molecular ions form via exothermic reactions between trapped, laser-cooled Be +($^2\text{P}_{3/2}$) and background H 2

Magnetic structure and anisotropy of [Co/Pd]_5/NiFe multilayers

January 9, 2015
Author(s)
Larysa Tryputen, Feng Guo, Liu Frank, T. N. Anh Nguyen, Majid Mohseni, Sunjae Chung, Yeyu Fang, Johan Akerman, Robert McMichael, Caroline Ross
The magnetization behavior, magnetic anisotropy and domain congurations of Co/Pd multilayers with perpendicular magnetic anisotropy capped with permalloy is investigated using magnetometry, magnetic force microscopy and ferromagnetic resonance. The

Multiply-ionized Atoms Isolated at low energy in a Unitary Penning Trap

January 9, 2015
Author(s)
Joseph Tan, Shannon Hoogerheide, Samuel Brewer, Nicholas D. Guise
Ions extracted from the EBIT at NIST are slowed and captured in a Penning trap that is made very compact ( 150 cm3) by a unitary architecture. Measurements after 1 ms of ion storage indicate that the captured ions are distributed with 5(1) eV of energy

Quantum Nonlinear Optics Near Optomechanical Instabilities

January 9, 2015
Author(s)
Xunnong Xu, Michael Gullans, Jacob Taylor
Optomechanical systems provide a unique platform for observing quantum behavior of macro- scopic objects. However, efforts towards realizing nonlinear behavior at the single photon level have been inhibited by the small size of the radiation pressure

Spin-transfer torque switching observed in nanopillar superconducting-magnetic hybrid Josephson junctions

January 9, 2015
Author(s)
Burm Baek, William H. Rippard, Matthew R. Pufall, Samuel P. Benz, Stephen E. Russek, Horst Rogalla, Paul D. Dresselhaus
Combining superconducting and magnetic materials to create novel superconducting devices has been motivated by the discovery of the Josephson critical current (Ics) oscillations with magnetic layer thickness and the demonstration of devices with switchable

Structural Features of Membrane-bound Glucocerebrosidase and a-Synuclein Probed by Neutron Reflectometry and Fluorescence Spectroscopy

January 9, 2015
Author(s)
Thai Leong Yap, Zhiping Jiang, Frank Heinrich, James M. Gruschus, Candace M. Pfefferkorn, Marilia Barros, Joseph E. Curtis, Ellen Sidransky, Jennifer C. Lee
Mutations in glucocerebrosidase (GCase), the enzyme deficient in Gaucher disease, are a common genetic risk factor for the development of Parkinson disease (PD) and related disorders, implicating the role of this lysosomal hydrolase in the disease etiology

Fingerprint Vendor Technology Evaluation

January 8, 2015
Author(s)
Craig I. Watson, Gregory P. Fiumara, Elham Tabassi, Su L. Cheng, Patricia A. Flanagan, Wayne J. Salamon
FpVTE was conducted primarily to assess the current capabilities of fingerprint matching algorithms using operational datasets containing several million subjects. There were three classes of participation that examined various finger combinations from

In-situ Characterization of Polymer-Fullerene Bilayer Stability

January 8, 2015
Author(s)
Lee J. Richter, Regis J. Kline, Hyun Wook Ro, Chad R. Snyder, Andrew A. Herzing, Sebastian Engmann
A consensus is emerging that every phase present in a bulk heterojunction organic photovoltaic (OPV) device is not material pure. In general, there will exist at least one region characterized by a mixture of donor and acceptor. Significant insights into

The Use of Index-Matched Beads in Optical Particle Counters

January 8, 2015
Author(s)
Dean C. Ripple
Although multiple methods are available for counting and sizing of protein particles over a broad range of sizes, differences in physical properties between common polystyrene-bead reference materials and the actual protein particles of interest result in

A Rod-Packing Microporous Hydrogen-Bonded Organic Framework for Highly Selective Separation of C 2 H 2 /CO 2 at Room Temperature

January 7, 2015
Author(s)
Peng Li, Yabing He, Yunfeng Zhao, Linhong Weng, Hailong Wang, Rajamani Krishna, Hui Wu, Wei Zhou, Michael O'Keeffe, Yu Han, Banglin Chen
Self-assembly of well-designed trigonal building subunit with diaminotriazines (DAT)functional groups leads to a unique rod-packing 3D microporous hydrogen-bonded organic framework (HOF-3). This HOF-3 material shows permanent porosity and demonstrates

An efficient curve evolution algorithm for multiphase image segmentation

January 7, 2015
Author(s)
Gunay Dogan
We propose a novel iterative algorithm for segmentation of multiphase images by curve evolution. Specifically, we address a multiphase version of the Chan-Vese piecewise constant segmentation energy. Our algorithm is efficient: it is based on an explicit

Performance Ranking of Refrigerants With Low Global Warming Potential

January 7, 2015
Author(s)
Mark A. Kedzierski, J S. Brown, Junemo Koo
This paper evaluates in a typical air-conditioner the cycle performance of thirty-nine refrigerants identified in the AHRI Low Global Warming Potential (GWP) Alternative Refrigerants Evaluation Program (Low-GWP AREP). The Low-GWP AREP was initiated in
Displaying 18626 - 18650 of 73832
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