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Search Publications

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Displaying 17151 - 17175 of 73929

LC-MS/MS Measurement of Nanomaterial Induced Genotoxicity in Isolated DNA

November 24, 2015
Author(s)
Bryant C. Nelson, Elijah J. Petersen, Pawel Jaruga, M Miral Dizdar
Making accurate measurements of the environmental fate and environmental and biological effects of engineered nanomaterials (ENMs) is critical for reliable risk assessment of these materials. However, the unique behaviors of ENMs may cause artifacts in

Observation of the reduction of thermal conductivity in a p-type nanostructured half-Heusler using neutron inelastic scattering

November 24, 2015
Author(s)
Winnie K. Wong-Ng, Jeffrey W. Lynn, Qingzhen Huang, Craig Brown, James A. Kaduk, Giri Joshi
To understand the role of the nanophase in reducing the lattice contribution of the thermal conductivity of thermoelectrics, the structure and phonon density of a p-type half-Heusler thermoelectric ingot (ingot-HH, nominal composition of (Hf0.5Zr0.5)Co(Sb0

Particle Fabrication Using Inkjet Printing onto Hydrophobic Surfaces for Optimization and Calibration of Trace Contraband Detection Sensors

November 24, 2015
Author(s)
John G. Gillen, Marcela N. Najarro, Matthew E. Staymates, Scott A. Wight, Marlon L. Walker, Jennifer R. Verkouteren, Eric S. Windsor, Aaron A. Urbas
A method has been developed to fabricate patterned arrays of micrometer-sized monodisperse solid particles of ammonium nitrate on hydrophobic silicon surfaces using inkjet printing. The method relies on dispensing one or more microdrops (typically 50 pL

Vapor-Liquid-Solid Etch of Semiconductor Surface Channels by Running Gold Nanodroplets

November 24, 2015
Author(s)
Babak Nikoobakht, Andrew A. Herzing, Shinichiro Muramoto, Jerry Tersoff
We show that Au nanoparticles spontaneously move across the (001) surface of InP, InAs, and GaP when heated in the presence of water vapor. As they move, the particles etch crystallographically aligned grooves into the surface. We show that this process is

Noncontact conductivity and dielectric measurement for high throughput roll-to-roll nanomanufacturing

November 23, 2015
Author(s)
Nathan D. Orloff, Christian J. Long, Jan Obrzut, Laurent Millaud, Francesca Mirri, Thomas R. Kole, Robert D. McMichael, Mattei Pasquali, Stephan J. Stranick, James A. Liddle
Advances in roll-to-roll processing of graphene [1] and carbon nanotube [2] have at last led to the continuous production of high-quality coatings and filaments, ushering in a wave of applications for flexible [3], [4] and wearable [5] electronics, woven

Neutron Scattering Study of Spin Ordering and Stripe Pinning in Superconducting La 1.93Sr d0.07^CuO 4

November 20, 2015
Author(s)
H. Jacobsen, I. A. Zaliznyak, A. T. Savici, B. L. Winn, S. Chang, M. Hucker, G. D. Gu, J. M. Tranquada, Peter M. Gehring
The relationships among charge order, spin fluctuations, and superconductivity in underdoped cuprates remain controversial. We use neutron scattering techniques to study these phenomena in La 1.93Sr 0.07CuO 4, a superconductor with a transition temperature

Adapting the Poisson-Influenced K-Means Algorithm for a Larger User Base

November 19, 2015
Author(s)
Brian P. Morris, Zachary H. Levine
A superconducting transition edge sensor (TES) can be a useful tool for counting the number of photons in a highly attenuated pulse of light, but it requires calibration for its outputs to be interpretable as photon numbers. The Poisson-Influenced K-Means

Chemical potential for light

November 19, 2015
Author(s)
Jacob M. Taylor, Mohammad Hafezi, Prabin Adhikari
Photons are not conserved in interactions with other matter. Consequently, when understanding the equation of state and thermodynamics of photons, while we have a concept of temperature for energy conservation, there is no equivalent chemical potential for

Emergence of chaotic scattering in ultracold Er and Dy

November 19, 2015
Author(s)
T. Maier, H Kadau, M. Schmitt, M. Wenzel, I. Ferrier-Barbut, T. Pfau, A. Frisch, S. Baier, K. Aikawa, L. Chomaz, Mark M.J., F. Ferlaino, Constantinos Makrides, A Petrov, Svetlana A. Kotochigova, Eite Tiesinga
We show that for complex and magnetic atoms chaotic scattering behavior emerges due to anisotropic inter- action potentials and finite Zeeman coupling. This generic behavior is studied in a collaborative effort for both ultracold dysprosium and erbium

A Constrained L2 Based Algorithm for Standardized Planar Datum Establishment

November 18, 2015
Author(s)
Craig M. Shakarji, Vijay Srinivasan
For years (decades, in fact) a definition for datum planes has been sought by ASME and ISO standards writers that combines the contacting nature of traditional surface plate mating with a means of balancing rocking conditions when there is a centrally

An apparatus for spatially resolved, temperature dependent near infrared reflectance measurements for identifying thermochromic transitions in combinatorial thin film libraries

November 18, 2015
Author(s)
Sara C. Barron, Nam T. Nguyen, Nhan V. Nguyen, Martin L. Green, Mitul P. Patel
A metrology and data analysis protocol is described for high throughput construction of thermochromic metal-insulator phase diagrams for lightly substituted VO2 thin films. The technique exploits the abrupt change in near infrared optical properties

On the Internet Connectivity in Africa

November 18, 2015
Author(s)
Assane Gueye, Peter Mell, Desire Banse, Faical Y. Congo
This study measures and documents growth of Internet connectivity in Africa from 2010 to 2014 with a focus on inter-country relationships. We evaluate both intra-continent connectivity as well as connectivity to other continents. An initial analysis

Relation Between Pore Size and the Compressibility of a Confi ned Fluid

November 18, 2015
Author(s)
Daniel W. Siderius, Vincent K. Shen, William P. Krekelberg, Gennady Y. Gor, Christopher J. Rasmussen, Noam Bernstein
When a fluid is conned to a nanopore, its thermodynamic properties differ from the properties of a bulk fluid. Measuring certain properties of con fined fluid can provide information about the pore sizes. Here we report a simple relation between the pore
Displaying 17151 - 17175 of 73929
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