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Search Publications

NIST Authors in Bold

Displaying 1601 - 1625 of 2361

Inverse Vulcanization of Elemental Sulfur to Prepare Polymeric Electrode Materials for Li-S Batteries

February 20, 2014
Author(s)
Christopher L. Soles, Vladimir P. Oleshko, Jenny J. Kim, Adam Simmonds, Jared Griebel, Jeff Pyun, Jungjin Park, Woo Jin Chung, Woo Tae Kim, Richard Glass, Yung-Eun Sun, Kookheon Char
Sulfur-rich copolymers were synthesized via inverse vulcanization to create electroactive cathode materials for lithium-sulfur battery applications. These materials exhibit enhanced capacity retention (1005 mAh/g at 100 cycles) and extended battery

Role of salt on adhesion of an epoxy/aluminium (oxide) interface in aqueous environments

February 16, 2014
Author(s)
Christopher C. White, Kar T. Tan, Donald L. Hunston, Justin M. Gorham, Aaron M. Forster, Vogt D. Bryan
The durability of adhesive joints in hostile environments is a major area of concern in structural adhesive bonding. Therefore, understanding the mechanics and mechanisms of degradation of adhesive joints is a key factor for more extensive use in future

Designing High-Performance PbS and PbSe Nanocrystal Electronic Devices through Stepwise, Post-Synthesis, Colloidal Atomic Layer Deposition

February 6, 2014
Author(s)
Soong Ju Oh, Nathaniel E. Berry, Hi-Hyuk Choi, E. A. Gaulding, Hangfei Lin, Taejong Paik, Benjamin T. Diroll, Shinichiro Muramoto, Murray B. Christopher, Cherie R. Kagan
We report a facile, solution based, post synthetic colloidal atomic layer deposition (PS-cALD) process to engineer the surface stoichiometry and therefore electronic properties of lead chalcogenide nanocrystal (NC) thin films. Using the stepwise and

A multicomponent phase-field model for extremely large partition coefficients

January 31, 2014
Author(s)
Michael J. Welland, Dieter Wolf, Jonathan E. Guyer
We develop a multi-component phase-field model specially formulated to robustly simulate concentration variations from molar to atomic magnitudes across an interface, i.e.: partition coefficients in excess of 10 (superscript 10plus23) such as may be the

Corrosion Detection in Concrete Rebars Using a Spectroscopic Technique

January 11, 2014
Author(s)
Edward J. Garboczi, Paul E. Stutzman, Shuangzhen S. Wang, Nicos Martys, Dat Duthinh, Virgil Provenzano, Shin G. Chou, David F. Plusquellic, Jack T. Surek, Sung Kim, Robert D. McMichael, Mark D. Stiles, Ahmed M. Hassan
Detecting the early corrosion of steel in reinforced concrete is a goal that has been much pursued. Since 2010, NIST has been working on a large project to develop an electromagnetic (EM) probe that detects the actual corrosion products via spectroscopic

Measurement and Simulation of Millimeter Wave Scattering Cross-sections from Steel-Reinforced Concrete

January 11, 2014
Author(s)
Ahmed M. Hassan, Edward Garboczi, Robert McMichael, Jack T. Surek, Mark D. Stiles, David F. Plusquellic, Virgil Provenzano, Paul E. Stutzman, Shuangzhen S. Wang, Sung Kim, Michael D. Janezic, Jason Coder, Nicos Martys, David R. Novotny
Some iron oxide corrosion products exhibit antiferromagnetic magnetic resonances (AFMR) at around 100 GHz at normal temperatures. AFMR can be detected in laboratory conditions, which serves as the basis for a new non-destructive spectroscopic method for

Fast Proton Conduction Facilitated by Minimum Water in a Series of Divinylsilyl-11-Silicotungstic Acid-co-Butyl Acrylate-co-Hexanediol Diacrylate Polymers

January 9, 2014
Author(s)
Lauren F. Greenlee, Andrew M. Herring, James L. Horan, Anitha Lingutla, Hui Ren, Mei-Chen Kuo, Sonny Sachdeva, Yuan Yang, Soenke Seifert, Michael A. Yandrasits, Steven J. Hamrock, Matthew H. Frey
Studies of proton transport in novel materials are important to enable a large array of electrochemical devices. In this study, we show that heteropoly acids (HPAs) when immobilized in polymer matrices have highly mobile protons. Divinyl-11-silicotungstic

Tunable electrical conductivity in metal-organic framework thin film devices

January 3, 2014
Author(s)
Albert A. Talin, Andrea Centrone, Alexandra C. Ford, Michael E. Foster, Vitalie Stavila, Paul M. Haney, Robert A. Kinney, Veronika Szalai, Farid El Gabaly, Heayoung Yoon, Francois Leonard, Mark Allendorf
We report a strategy for realizing tunable electrical conductivity in MOFs in which the nanopores are infiltrated with redox-active, conjugated guest molecules. This approach is demonstrated using thin-film devices of the MOF Cu3(BTC)2 (also known as HKUST

Thermodynamic modelling of liquids: CALPHAD approaches and contributions from statistical physics

December 20, 2013
Author(s)
Chandler A. Becker, J Agren, Marcello Baricco, Qing Chen, Sergei A. Decterov, Ursula R. Kattner, John Perepezko, Gernot Pottlacher, Malin Selleby
Here we describe current approaches to modelling liquids in CALPHAD. available experimental methods and results, and considerations in the use of molecular simulation and first-principles methods in thermodynamic modelling of liquids. We examine the two

Impact of UV Irradiation on the Surface Chemistry and Structure of Multiwall Carbon Nanotube Epoxy Nanocomposites

December 6, 2013
Author(s)
Elijah Petersen, Thomas F. Lam, Justin Gorham, Keana Scott, Chris Long, Deborah Jacobs, Renu Sharma, James Alexander Liddle, Tinh Nguyen
One of the most promising applications of nanomaterials is as nanofillers to enhance the properties of polymeric materials. However, the effect of nanofillers on polymers subject to typical environmental stresses, such as ultraviolet (UV) radiation, high

Dynamic contact AFM methods for nanomechanical properties

December 1, 2013
Author(s)
Donna C. Hurley, Jason P. Killgore
This chapter focuses on two atomic force microscopy (AFM) methods for nanomechanical characterization: force modulation microscopy (FMM) and contact resonance (CR) techniques. FMM and CR methods share several common features that distinguish them from

High-Temperature Electromechanical Properties of CTGS

December 1, 2013
Author(s)
Ward L. Johnson, Michal Schulz, Holger Fritze
CTGS (Ca3TaGa3Si2O14) is a commercially available, Czochralski-grown piezoelectric material from the langasite family that has an ordered crystal structure. It can be excited piezoelectrically up to at least 1285 °C, which is very close to the melting

Irreversible thermodynamics of creep in crystalline solids

November 15, 2013
Author(s)
Yuri Mishin, James A. Warren, Robert F. Sekerka, William J. Boettinger
We develop an irreversible thermodynamics framework for the description of creep deformation in crystalline solids by mechanisms that involve vacancy diffusion and lattice site generation and annihilation. The material undergoing the creep deformation is

What's in a Name

November 4, 2013
Author(s)
Ursula R. Kattner
In the early days of alloy phase diagrams phases were named using Greek letters in unary systems, from lower temperatures to higher temperatures, and in binary systems from the left to the right hand side of the system. This convenient convention allows

Airbrushed Nanofiber Scaffolds Support Bone Marrow Stromal Cell Differentiation

November 1, 2013
Author(s)
Carl G. Simon Jr., Wojtek J. Tutak, Sumona Sarkar, Tanya M. Farooque, Jyotsnendu J. Giri, Dongbo Wang, Sheng Lin-Gibson, Joachim Kohn, Durgadas Bolikal
Nanofiber scaffolds are effective for tissue engineering since they emulate the fibrous nanostructure of native extracellular matrix (ECM). Although electrospinning has been the most common approach for fabricating nanofiber scaffolds, airbrushing
Displaying 1601 - 1625 of 2361
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