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Displaying 1201 - 1225 of 2294

Catalyzed KSiH 3 as a Reversible Hydrogen Storage Material

November 1, 2016
Author(s)
Raphael Janot, Wan Si NMN Tang, Damien Clemencon, Jean-Noel Chotard
Solid-state hydrogen storage through the reversible formation of metallic hydrides is a key issue for the development of hydrogen as an energy vector. Herein reports the hydrogen storage performances of the KSiH 3 silanide phase ball-milled with NbF 5 as a

CrO 3 Based Proton Conductors

November 1, 2016
Author(s)
Laura Mazzei, Max Wolff, Daniele Pergolesi, Joseph Dura, Lars Borjesson, Philipp Gutfreund, Marco Bettinelli, Thomas Lippert, Maths Karlsson
Epitaxial thin films of the proton conducting perovskite BaZr 0.53In 0.47O 3-δH^d0.47-2δ, grown by pulsed laser deposition, were investigated in their hydrated and dehydrated conditions through a multi-technique approach with the aim to study the structure

Sketchnoting: An Analog Skill in the Digital Age

November 1, 2016
Author(s)
Robert M. Dimeo
In the last decade, a method of notetaking incorporating hand-drawn visual elements has become an increasingly popular technique for recording information from meetings and presentations at conferences. Why has it become so popular? Proponents and

Nanoscale Pillar-enhanced Tribological Surfaces as Antifouling Membranes

October 24, 2016
Author(s)
Edwin P. Chan, Wansuk Choi, Won-Gi Ahn, Jong-Hyun Park, Hyun W. Jung, Seungkwan Hong, Ji-Young Han, Sangpil Park, Doo-Hyun Ko, Jung-Hyun Lee
We present a nonconventional membrane surface modification approach that utilizes surface topography to manipulate the tribology of foulant accumulation on water desalination membranes via imprinting of submicron titanium dioxide (TiO2) pillar patterns

Entropy-Driven Structural Transition and Kinetic Trapping in Formamidinium Lead Iodide Perovskite

October 21, 2016
Author(s)
Tianran Chen, Benjamin J. Foley, Changwon Park, Craig Brown, Leland Harriger, Jooseop Lee, Jacob Ruff, Mina Yoon, Joshua J. Choi, Seugn-Hun Lee
A challenge for hybrid perovskite solar cells is device instability, which calls for understanding of the perovskite structural stability and phase transitions. Here, using neutron diffraction and ab-initio calculations on HC(NH 2) 2PbI 3, we show that the

Influence of Pressure on Glass Formation in a Simulated Polymer Melt

October 18, 2016
Author(s)
Jack F. Douglas, Wensheng Xu, Karl Freed
We investigate the thermodynamic and dynamic properties of a model unentangled glass-forming polymer melt over a wide range of pressures (P) and temperatures (T) using molecular dynamics simulation. We show that the T dependence of the reduced thermal

Supramolecular Self-assembly of a Novel Hydrogelator: Characterization of Fiber Morphology and Formation and Thermal-Reversible Gelation

October 8, 2016
Author(s)
Jack F. Douglas, Yuan Gao Yuan Gao, Ryan C. Nieuwendaal, Emilios Dimitriadis, Boualem Hammouda, Bing Xu, Ferenc Horkay
Hydrogels are of intense recent interest in connection with biomedical applications ranging from 3-D cell cultures and stem cell differentiation to regenerative medicine, controlled drug delivery and tissue engineering. This prototypical form of soft

Correlation Between Morphology and Device Performance of pBTTT:PC 71 BM Solar Cells

October 1, 2016
Author(s)
Wenluan Zhang, Hao Shen, Brett W. Guralnick, Brian Kirby, Ngoc A. Nguyen, Roddel Remy, Charles Majkrzak, Michael E. Mackay
Phenyl-C 71-butyric acid methyl ester (PC 71BM) could intercalate between the side-chains of poly(2,5-bis(3-tetradecylthiophen-2-yl)thieno[3,2-b]thiophene (pBTTT) creating a stable co-crystal structure, so optimal solar cell performance was obtained at

Atomically Engineered Ferroic Layers Yield a Room-Temperature Magnetoelectric Multiferroic

September 21, 2016
Author(s)
Julia A. Mundy, Charles M. Brooks, Megan E. Holtz, Jarrett A. Moyer, Hena Das, Alejandro F. Rebola, John T. Heron, James D. Clarkson, Steven M.T. Disseler, Zhiqi Liu, Alan Farhan, Rainer Held, Robert Hovden, Elliot Padgett, Qingyun Mao, Hanjong Paik, Rajiv Misra, Lena F. Kourkoutis, Elke Arenholz, Andreas Scholl, Julie Borchers, William D. Ratcliff, Ramamoorthy Ramesh, Craig J. Fennie, Peter Schiffer, David A. Muller, Darrell G. Schlom
The defining feature of ferroics is the ability of an external stimulus - electric field, magnetic field, or stress-to move domain walls. These topological defects and their motion enables many useful attributes, e.g., memories that can be reversibly

The Glass Transition of a Single Macromolecule

September 21, 2016
Author(s)
Jack F. Douglas, David Simmons, Weston L. Merling, Jack Mileski
The glass transition of a single macromolecule in isolation is relevant to the dynamics of systems including dilute solutions of synthetic polymers and biological macromolecules such as proteins. Here we employ molecular dynamics simulation to show that a

A Q-band free-space characterization of carbon nanotube composites

September 19, 2016
Author(s)
Ahmed M. Hassan, Jan Obrzut, Edward Garboczi
We present a free-space measurement technique for non-destructive non-contact electrical and dielectric characterization of nano-carbon composites in the Q-band frequency range of 30 GHz to 50 GHz. The experimental system and error correction model

The Center for Research on Extreme Batteries

September 19, 2016
Author(s)
Eric Wachsman, Cynthia Lundgren, Esther S. Takeuchi, Kang Xu, Chunsheng Wang, Joseph Dura, David L. Jacobson, Kahlil Amine, William Acker
How much would you spend on a battery if your life depended on it? Rarely is that question asked as the vast majority of battery development is focused on bringing down battery cost for wide spread consumer acceptance. However, for many industries

Towards Building Simulation Tools for Next Generation Soft Body Armour Testing Standards

September 18, 2016
Author(s)
Steven P. Mates, Amanda L. Forster, Michael A. Riley, Kirk D. Rice, Juliana Ivancik
Accurate simulation tools for soft body armour testing would vastly improve test designer's ability to optimize and refine standards by supplying quantitative information about the influence of test variables on test outcomes. Such tools would also
Displaying 1201 - 1225 of 2294
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