Journals

Model colloid system for interfacial sorption kinetics

March 24, 2015

Author(s)

Paul NMN Salipante, Steven D Hudson

Adsorption kinetics of nanometer scale molecules, such as proteins at interfaces, is usually determined through measurements of surface coverage. Their small...

Update on the MiniCLEAN Dark Matter Experiment

March 24, 2015

Author(s)

Kevin J. Coakley, K. Rielage, M. Akashi-Ronquest, M. Bodmer, R. Bourque, B. Buck, A. Butcher, T. Caldwell, Y. Chen, F. A. Duncan, E. Flores, J. A. Formaggio, D. Glaster, F. Giuliani, M. Gold, E. Grace, J. Griego, N. Guerrero, V. Guiseppe, R. Henning, A. Hime, S. Jaditz, C. Kachulis, E. Kearns, J. Kelsey, J. R. Klein, A. Latorre, I. Lawson, O. Li, P. Liimatainen, S. Linden, F. Lopez, K. McFarlane, D. N. McKinsey, S. MacMullin, A. Mastbaum, D.-M. Mei, J. Monroe, J. A. Nikkel, J. Oertel, G. D. Orebi Gann, K. Palladino, G. Perumpilly, L. Rodriguez, R. Schnee, S. Seibert, J. Walding, B. Wang, J. Wang, C. Zhang

The direct search for dark matter is entering a period of increased sensitivity to the hypothetical Weakly Interacting Massive Particle (WIMP). One such...

"Weighing" a Gas With Microwave and Acoustic Resonances

March 24, 2015

Author(s)

Keith A. Gillis, James B. Mehl, James W. Schmidt, Michael R. Moldover

With calibrations of large flow meters in mind, we established the feasibility of determining the mass Mof argon gas contained within a 0.3 m 3 commercially...

Frequency shifts in NIST Cs primary frequency standards due to transverse RF field gradients

March 23, 2015

Author(s)

Steven R. Jefferts, Neil Ashby, Stephan E. Barlow, Thomas P. Heavner

A single-particle Green's function (propagator) is introduced to study the deflection of laser-cooled Cesium atoms in an atomic fountain due to RF field...

Open-air, broad-bandwidth trace gas sensing with a mid-infrared optical frequency comb

March 20, 2015

Author(s)

Lora L. Nugent-Glandorf, Scott A. Diddams

A mid-Infrared frequency comb is produced via an optical parametric oscillator (OPO) pumped by an amplified 100 MHz Yb:fiber mode-locked laser. We use this...

Rooftop Air-Conditioning Unit Performance Improvement using Refrigerant Circuitry Optimization

March 20, 2015

Author(s)

David A. Yashar, Sunil Lee, Piotr A. Domanski

This study demonstrates the performance improvement of an air-to-air 7.5 Ton (26.4 kW) rooftop unit (RTU) achieved by optimizing an evaporators refrigerant...

Interplay of particle shape and suspension properties: a study of cube-like particles

March 20, 2015

Author(s)

Debra J. Audus, Ahmed M. Hassan, Edward J. Garboczi, Jack F. Douglas

With advances in anisotropic particle synthesis, particle shape is now a feasible parameter for tuning suspension properties. However, there is a need to...

A perspective on the use of nanomaterial categorization for risk assessment and regulatory decision-making

March 19, 2015

Author(s)

Hilary Godwin, Catherine Nameth, David Avery, Lynn Bergeson, Elizabeth Beryt, Wlliam Boyd, Amy Clippinger, Christine Hendren, Patricia Holden, Keith Houck, Agnes Kane, Frederick Klaessig, Tong Kooi Lee, Iseult Lynch, Timothy Malloy, Mary Miller, Gunter Oberdorster, Elijah Petersen, Vicki Stone, Andre Nel

For nanotechnology to meet its potential as a revolutionary and sustainable technology, it is necessary that engineered nanomaterials (ENMs) and nano-enabled...

Molecular Details of α-Synuclein Membrane Association Revealed by Neutrons and Photons

March 19, 2015

Author(s)

Zhiping Jiang, Sara K. Hess, Frank Heinrich, Jennifer C. Lee

α-Synuclein (α-syn) is an abundant neuronal protein associated with Parkinson's disease that is disordered in solution, but exists in equilibrium between a bent...

Field Measurement of Ventilation Rates

March 18, 2015

Author(s)

Andrew K. Persily

Ventilation rates have significant impacts on building energy use and indoor contaminant concentrations, making them key parameters in evaluating building...

Detection and characterization of nonspecific, sparsely-populated binding modes for conformational selection in the early stages of complexation

March 18, 2015

Author(s)

Antonio Cardone, Aaron Bornstein, Harish C. Pant, Mary C. Brady, Ram D. Sriram, Sergio Hassan

A method is proposed to study protein-ligand binding in a system governed by specific and non-specific interactions. Strong associations lead to narrow...

Uniqueness of Plane Wave Integral Representation for Idealized Fields in Reverberation Chambers

March 18, 2015

Author(s)

David A. Hill

Abstract A plane wave integral representation for fields in reverberation chambers has been found useful for the idealized case of well-stirred fields. The...

Preparation and Separation of DNA-Wrapped Carbon Nanotubes

March 18, 2015

Author(s)

Geyou Ao, Ming Zheng

Purification of single-chirality single-wall carbon nanotubes (SWCNTs)from their synthetic mixture is a prerequisite for many applications. DNA-controlled...

Light-wave mixing and scattering with quantum gases

March 18, 2015

Author(s)

Lu Deng, Edward W. Hagley, C.J. Zhu

We show that optical processes originating from elementary excitations with dominant collective atomic recoil motion in a quantum gas can profoundly change many...

High-Fidelity, Weak-Light Polarization Gate Using Room-Temperature Atomic Vapor

March 18, 2015

Author(s)

Lu Deng, Edward W. Hagley, Runbing Li, Chengjie Zhu

Using a polarization-selective-Kerr-phase-shift technique we demonstrate a fast, all-optical, high-fidelity polarization gate in a room-temperature atomic...

Gelation of Large Hard Particles with Short-Range Attraction Induced by Bridging of Small Soft Microgels

March 18, 2015

Author(s)

Junhua Luo, Guangcui Yuan, Chuanzhuang Zhao, Charles C. Han, Jie Chen, Yun Liu

In this study, mixed suspensions of large hard polystyrene microsphere and small poly(N-isopropylacrylamide) microgel is used as model systems to investigate...

Pressure Evolution of Electrical Transport in the 3D Topological Insulator (Bi,Sb)₂(Se,Te)₃

March 18, 2015

Author(s)

J.R. Jeffries, Nicholas Butch, Y.K. Vohra, S. T. Weir

The group V-VI compounds - like Bi 2Se 3, Sb 2Te 3, or Bi 2Te 3 - have been widely studied in recent years for their bulk topological properties. The high-Z...

X-ray CT imaging and finite element computations of the elastic properties of a rigid organic foam compared to experimental measurements: Implications for foam grade differences and process control

March 17, 2015

Author(s)

Edward Garboczi, Aaron Forster, Jan Miller, Chen-Luh Lin, Cesar Chan, Kumar Natesaiyer, David Song, Suman Sinha-Ray

A combined computational/experimental materials science technique was developed for acquiring the structure of a rigid organic foam (ROHACELL) using X-ray...

Determining the Variability of Lesion Size Measurements from CT Patient Datasets Acquired Under "No Change" Conditions

March 17, 2015

Author(s)

John Lu

To determine the variability of lesion size measurements in CT datasets of patients 39 imaged under a no change (coffee break) condition and to determine...

Self- and air-broadened cross sections of ethane (C2H6) determined by frequency-stabilized cavity ring-down spectroscopy near 1.68 µm

March 17, 2015

Author(s)

Zachary Reed, Joseph T. Hodges

The absorption spectrum of ethane was measured by frequency-stabilized cavity ring-down spectroscopy over the wave number range 5950-5967 cm-1. Spectra are...

Redox sorting of carbon nanotubes

March 17, 2015

Author(s)

Hui Gui, Jason K. Streit, Jeffrey Fagan, Angela R. Hight Walker, Chongwu Zhou, Ming Zheng

This work expands the redox chemistry of single-wall carbon nanotube (SWCNT) by investigating its role in a number of SWCNT sorting processes. Using a...

Absorption spectroscopy and imaging from the visible through mid-infrared with 20 nm resolution.

March 17, 2015

Author(s)

Aaron M. Katzenmeyer, Glenn Holland, Kevin Kjoller, Andrea Centrone

Absorption spectroscopy and mapping from visible through mid-IR wavelengths has been achieved with spatial resolution exceeding the limit imposed by diffraction...

Effects of Thermal Rippling on the Frictional Properties of Free-Standing Graphene.

March 16, 2015

Author(s)

Alexander Y. Smolyanitsky

With use of simulated friction force microscopy, we study the effect of varying temperature on the frictional properties of suspended graphene. In contrast with...

Beam broadening in transmission EBSD

March 16, 2015

Author(s)

Robert R. Keller, Katherine P. Rice, Mark Stoykovich

Transmission electron backscatter diffraction (t-EBSD), also known as transmission electron forward scatter diffraction (t-EFSD) or transmission Kikuchi...

Magnetometry of single ferromagnetic nanoparticles using magneto-optical indicator films with spatial amplification

March 16, 2015

Author(s)

Andrew L. Balk, Carlos M. Hangarter, Samuel M. Stavis, John Unguris

We present a magneto-optical imaging technique to rapidly measure two dimensional, sub-micrometer maps of fringe fields from single magnetic nanorods with...

Vapor Pressure Measurements by the Gas Saturation Method: The Influence of the Carrier Gas

March 16, 2015

Author(s)

Jason A. Widegren, Allan H. Harvey, Mark O. McLinden, Thomas J. Bruno

The influence of the carrier gas on vapor pressure (psat) measurements by the gas saturation method was studied. Eicosane (C20H42) was used as the test compound...

Development and evaluation of interface-stabilized and reactive-sputtered oxide-capped multilayers for EUV lithography

March 16, 2015

Author(s)

Michael Kriese, Jim Rodriguez, Gary Fournier, Steven Grantham, Shannon B. Hill, John J. Curry, Charles S. Tarrio, Yuriy Platonov

A critical component of high-performance EUV lithography source optics is the reflecting multilayer coating. The ideal multilayer will have both high...

Dithiol-based Modification of Poly(dopamine): Enabling Protein Resistance Via Short-Chain Ethylene Oxide Oligomers

March 16, 2015

Author(s)

Amit Vaish, David J. Vanderah, Lee J. Richter, Michael Dimitriou, Kristen L. Steffens, Marlon L. Walker

We present a facile strategy to modify poly(dopamine)(PDA)-coated substrates. Using thiol-terminated short chain ethylene oxide oligomers (OEG) under aqueous...

Dynamic Stress Analysis Applied to the Electrodeposition of Copper

March 16, 2015

Author(s)

Manon C. Lafouresse, Ugo Bertocci, Gery R. Stafford

Stress development during the electrodeposition of copper from additive-free, acidic CuSO_(4) electrolyte was analyzed by dynamic stress analysis, an in situ...

System Vicarious Calibration for Ocean Color Climate Change Applications: Requirements for In Situ Data

March 15, 2015

Author(s)

Giuseppe Zibordi, Frederic Melin, Kenneth Voss, B. Carol Johnson, Bryan Franz, Ewa Kwiatkowska, J. P. Huot, Menghua Wang, David Antoine

System Vicarious Calibration (SVC) ensures a relative radiometric calibration to satellite ocean color sensors that minimizes uncertainties in the water-leaving...