Journals

Rotational Dynamics of Organic Cations in the CH₃NH₃Pbl₃ Perovskite

December 14, 2015

Author(s)

Tianran Chen, Benjamin J. Foley, Bahar NMN Ipek, Madhu Sudan Tyagi, John R. Copley, Craig Brown, Joshua J. Choi, Seunghun Lee Lee

All semiconductors can generate free charges by absorbing light. However, not all semiconductors are high performance photovoltaic materials, because the charge...

Novel Cyber Physical System for 3D Imaging of the Small Intestine in Vivo

December 11, 2015

Author(s)

Kamran Sayrafian, Kaveh Pahlavan, Yishuang Geng, David Cave, GUANQUN BAO, LIANG MI, EMMANUEL AGU, ANDREW KARELLAS, VAHID TAROKH

Small intestine is the longest organ in the gastrointestinal tract where much of the digestion and the food absorption take place. Wireless video capsule...

Temperature Calibration for In Situ Environmental Transmission Electron Microscopy Experiments

December 11, 2015

Author(s)

Jonathan P. Winterstein, Pin A. Lin, Renu Sharma

In-situ Environmental Transmission Electron Microscopy (ETEM) experiments require specimen heating holders to study material behavior in gaseous environments at...

Magnetic Structure and Exchange Interactions in Quasi-One-Dimensional MnCl₂(urea)₂

December 11, 2015

Author(s)

Jamie L. Manson, Qingzhen Huang, Craig Brown, Jeffrey W. Lynn, Matthew B. Stone, John Singleton, Fan Xiao

MnCl 2(urea) 2 is a new linear chain coordination polymer that exhibits slightly counter-rotated MnCl 4 rhomboids along the chain-axis. The material...

Femtosecond synchronization of optical clocks over free-space links

December 11, 2015

Author(s)

Jean-Daniel Deschenes, Laura C. Sinclair, Fabrizio R. Giorgetta, William C. Swann, Esther Baumann, Hugo Bergeron, Michael A. Cermak, Nathan R. Newbury

The use of optical clocks/oscillators in future ultra-precise navigation, gravitational sensing, and relativity experiments will require time comparison and...

Broadband Optical Properties of Graphene by Spectroscopic Ellipsometry

December 11, 2015

Author(s)

Wei Li, Nhan Van Nguyen, Guangjun Cheng, Angela R. Hight Walker, David J. Gundlach, Yiran Liang, boyuan Tian, Xuelei Liang, Lian-Mao Peng

The broadband (0.7 eV to 9.0 eV) optical properties of chemical-vapor-deposition (CVD) grown graphene are determined by spectroscopic ellipsometry. The optical...

Comparison of two methodologies for calibrating satellite instruments in the visible and near-infrared

December 10, 2015

Author(s)

Steven W. Brown, Keith R. Lykke, Robert A. Barnes, Bruce Guenther, James J. Butler, Thomas Schwarting, David Moyer, Frank DeLuccia, Christopher Moeller

Traditionally, satellite instruments that measure Earth-reflected solar radiation in the visible and near infrared wavelength regions have been calibrated for...

Using Coupled Energy, Airflow and IAQ Software (TRNSYS/CONTAM) to Evaluate Building Ventilation Strategies

December 10, 2015

Author(s)

William S. Dols, Steven J. Emmerich, Brian J. Polidoro

Building energy analysis tools are available in many forms that provide the ability to address a broad spectrum of energy-related issues in various combinations...

Charge transfer stabilization of late transition metal oxide nano-particles on a layered niobate support

December 10, 2015

Author(s)

Megan E. Strayer, Thomas Senftle, Jonathan P. Winterstein, Nella M. Vargas-Barbosa, Renu Sharma, Robert M. Rioux, Michael J. Janik, Thomas Mallouk

The interfacial interactions between late transition metal/metal oxide nanoparticles and oxide supports impact catalysts' activity and stability. Here, we...

Gapped and Gapless Short-Range-Ordered Magnetic States with (1/2,1/2,1/2) Wave Vectors in the Pyrochlore Magnet Tb_2+xTi_2-XO_7+δ

December 10, 2015

Author(s)

E. Kermarrec, D. D. Maharaj, J. Gaudet, K. Fritsch, D. Pomaranski, J. B. Kycia, Yiming Qiu, John R. Copley, M. M. P. Couchman, A. O. R. Morningstar, H. A. Dabkowska, B. D. Gaulin

Recent low temperature heat capacity (CP ) measurements on polycrystalline samples of the py- rochlore antiferromagnet Tb 2+xTi 2¿xO 7+δ have shown a strong...

Structural Changes and Aggregation Mechanisms for Anti-Streptavidin IgG1 at Elevated Concentration

December 10, 2015

Author(s)

Gregory V. Barnett, Wei Qi, Samiul Amin, E. Neil Lewis, Vladimir I. Razinkov, Bruce A. Kerwin, Yun Liu, Christopher J. Roberts

Non-native protein aggregation may occur during manufacturing and storage of protein therapeutics, and this may decrease drug efficacy or jeopardize patient...

Killing bacteria impregnated in human dentin blocks via primer containing dimethylaminododecyl methacrylate

December 9, 2015

Author(s)

Chen Chen, Cheng Lei, Michael D. Weir, Nancy Lin, Sheng Lin-Gibson, Xuedong Zhou

Recent studies developed antibacterial bonding agents and composites containing dimethylaminododecyl methacrylate (DMADDM). The objectives of this study were to...

Urinary iodine and stable isotope analysis to examine habitat influences on thyroid hormones among coastal dwelling American alligators

December 9, 2015

Author(s)

Ashley S. Boggs-Russell, Heather J. Hamlin, James C. Nifong, Brittany L. Kassim, Russell H. Lowers, Thomas M. Galligan, Stephen E. Long, Louis J. Guillette Jr.

The American alligator, a freshwater species, is known to forage in marine environments which could lead to increased dietary uptake of iodine, a nutrient...

High-Resolution Imaging and Spectroscopy at High Pressure: A Novel Liquid Cell for the Transmission Electron Microscope

December 9, 2015

Author(s)

Mihaela M. Tanase, Jonathan P. Winterstein, Renu Sharma, Vladimir A. Aksyuk, Glenn E. Holland, James A. Liddle

We demonstrate quantitative core-loss electron energy-loss spectroscopy of iron oxide nanoparticles and imaging resolution of Ag nanoparticles in liquid down to...

Analysis of Potential Homemade Nitrate Ester Explosive By-products via Direct Analysis in Real Time Mass Spectrometry

December 9, 2015

Author(s)

Edward Sisco, Thomas Forbes

This work demonstrates the ability of off-axis direct analysis in real time mass spectrometry (DART-MS) to detect five representative homemade nitrate ester...

Magnetic Fluctuations Driven Insulator-to-Metal Transition in Ca(Ir_1-xRu_x)O₃

December 9, 2015

Author(s)

J. Gunasekera, Leland Harriger, A. Dahal, T. Heitmann, G. Vignale, D. K. Singh

Magnetic fluctuations in transition metal oxides are a subject of intensive research because of the key role they are expected to play in the transition from...

Chloride Incorporation Process in CH3NH3PbI3-xClx Perovskites via Nanoscale Bandgap Maps

December 9, 2015

Author(s)

Jungseok Chae, Qingfeng Dong, Jinsong Huang, Andrea Centrone

CH3NH3PbI3-xClx perovskites enable fabrication of highly efficient solar cells. Chloride ions benefit the morphology, carrier diffusion length and stability of...

Phase Separation Enhanced Magneto-Electric Coupling in La_0.7Ca_0.3MnO₃/BaTiO₃ Ultra-thin Films

December 9, 2015

Author(s)

A. Alberca, C. Munuera, Brian Kirby, N. M. Nemes, A. M. Perez-Munoz, J. Tornos, F. J. Mompean, C. Leon, J. Santamaria, M. Garcia-Hernandez

We study the origin of the magnetoelectric coupling in manganite films on ferroelectric substrates. We find large magnetoelectric coupling in La 0.7Ca 0.3MnO 3...

Quantifying "Softness" of Organic Coatings on Gold Nanoparticles using Correlated Small-Angle X-Ray and Neutron Scattering

December 9, 2015

Author(s)

Benjamin T. Diroll, Kathleen Weigandt, Davit Jishkariani, Matteo Cargnello, Ryan J. Murphy, Lawrence A. Hough, Christopher B. Murray, Bertrand Donnio

Small angle X-ray and neutron scattering provide powerful tools to selectively characterize the inorganic and organic components of hybrid nanomaterials. Using...

Oriented Liquid Crystalline Polymer Semiconductor Films with Large Ordered Domains

December 9, 2015

Author(s)

Xiao Xue, George Chandler, Xinran Zhang, Regis J. Kline, Martin Heeney, Pete Diemer, Oana Jurchescu, Brendan T. O'Connor

One Dimensional(1D)-to-2D Crossover of Spin Correlations in the 3D Magnet ZnMn₂O₄

December 8, 2015

Author(s)

Steven M.T. Disseler, Ying Chen, S. Yeo, G. Gasparovic, P.M.B. Piccoli, A. J. Schultz, Yiming Qiu, Qingzhen Huang, S.-W. Cheong, William D. Ratcliff

We report on the intriguing evolution of the dynamical spin correlations of the frustrated spinel ZnMn 2O 4. Inelastic neutron scattering and magnetization...

Field Portable Low Temperature Porous Layer Open Tubular Cryoadsorption Headspace Sampling and Analysis Part II: Applications

December 8, 2015

Author(s)

Thomas J. Bruno, Jessica Nichols

In previous work, dynamic headspace vapor collection on short, porous layer open tubular (PLOT) capillary columns maintained at low temperature was introduced...

Integrity of Bolted Angle Connections Subjected to Simulated Column Removal

December 8, 2015

Author(s)

Jonathan M. Weigand, Jeffrey W. Berman

Large-scale tests of steel gravity framing systems (SGFSs), one of the most commonly used structural systems in the United States, have shown that enhancements...

Quantification of Nanoparticle Release from Polymer Nanocomposite Coatings due to Environmental Stressing

December 8, 2015

Author(s)

Yeon S. Kim, Nasir M. Uddin, Marc R. Nyden, Richard H. Harris Jr., Savelas A. Rabb, Rick D. Davis

Certain engineered nanoparticles (ENP) reduce the flammability of components used in soft furnishings (mattresses and upholstered furniture). Most commonly...

Developments in time-division multiplexing of X-ray transition-edge sensors.

December 8, 2015

Author(s)

William B. Doriese, Kelsey M. Morgan, Douglas A. Bennett, Edward V. Denison, Colin P. Fitzgerald, Joseph W. Fowler, Johnathon D. Gard, James P. Hays-Wehle, Gene C. Hilton, Kent D. Irwin, Young Il Joe, John A. Mates, Galen C. O'Neil, Carl D. Reintsema, Nigel O. Robbins, Daniel R. Schmidt, Daniel S. Swetz, Hideyuki Tatsuno, Joel N. Ullom, Leila R. Vale

Time-division multiplexing (TDM) is a mature scheme for the readout of transition-edge sensors. Variants of TDM, which is based on superconducting-quantum...

Programmable Extreme Pseudomagnetic Fields in Graphene by a Uniaxial Stretch

December 8, 2015

Author(s)

Shuze Zhu, Joseph A. Stroscio, Teng Li

Many of the properties of graphene are tied to its lattice structure, allowing for tuning of charge carrier dynamics through mechanical strain. The graphene...

Field portable low temperature porous layer open tubular cryoadsorption headspace sampling and analysis part I: Instrumentation

December 8, 2015

Author(s)

Thomas J. Bruno

Building on the successful application in the laboratory of PLOT-cryoadsorption as a means of sampling vapor samples, in this paper a field portable apparatus...

Quantum Nondemolition Measurement of a Nonclassical State of a Massive Object

December 7, 2015

Author(s)

Florent Q. Lecocq, Jeremy B. Clark, Raymond W. Simmonds, Jose A. Aumentado, John D. Teufel

By coupling a macroscopic mechanical oscillator to two microwave cavities, we simultaneously prepare and monitor a nonclassical steady state of mechanical...

Shape critical properties of patterned Permalloy thin films

December 7, 2015

Author(s)

Robert D. Shull, Y. P. Kabanov, V S. Gornakov, Andrew P. Chen, Valerian I. Nikitenko

The effects of shape and edges in magnetic elements with reduced dimensions on the magnetization reversal of cross- and framed cross- shaped Ni(sub79)Fe(sub21)...

Nanocatalyst shape and composition during nucleation of single-walled carbon nanotubes

December 7, 2015

Author(s)

Jose Gomez-Ballesteros, Juan Burgos, Pin A. Lin, Renu Sharma, Perla Balbuena

The dynamic evolution of nanocatalyst particle shape and carbon composition is examined through the initial stages of the single walled-carbon nanotubes...