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Journals

Porous Metal-Organic Frameworks for Gas Storage and Separation: What, How and Why?

October 20, 2014

Author(s)

Bin Li, Hui-Min Wen, Wei Zhou, Banglin Chen

Metal-organic frameworks (MOFs) have been emerging as promising multifunctional materials, and shown particularly useful applications for gas storage and...

Nucleation of Graphene and Its Conversion to Single Walled Carbon Nanotube

October 20, 2014

Author(s)

Matthieu C. Picher, Pin A. Lin, Gomez-Ballesteros L. Jose, Perla Balbuena, Renu Sharma

Nucleation is a critical stage for controlling the molecular building blocks into desired functional crystalline structures. For example, chirality of a single...

Structural Model of an mRNA in Complex with the Bacterial Chaperone Hfq

October 20, 2014

Author(s)

Yi Peng, Joseph E. Curtis, Xianyang Fang, Sarah A. Woodson

Small non-coding (s)RNAs and their chaperone protein Hfq regulate bacterial gene expression in response to stress and other environmental signals. Hfq binds...

Structure of Flocs of Latex Particles Formed by Addition of Protein from Moringa Seeds

October 20, 2014

Author(s)

Maja S. Hellsing, Habauka M. Kwaambwa, Fiona M. Nermark, Bonang B. M. Nkoane, Andrew J. Jackson, Matthew John Wasbrough, Ida Berts, Lionel Porcar, Adrian R. Rennie

Proteins extracted from the seeds of Moringa trees are effective flocculents for particles dispersed in water and they are attractive as a natural and...

Streamlining the Additive Manufacturing Digital Spectrum: A Systems Approach

October 18, 2014

Author(s)

Duck B. Kim, Paul Witherell, Robert R. Lipman, Shaw C. Feng

Additive Manufacturing (AM) provides great potential for industrial manufacturers who require low volume and functional, highly complex end use products. Given...

A geometric description of nonreciprocity in coupled two-mode systems

October 16, 2014

Author(s)

Leonardo M. Ranzani, Jose A. Aumentado

We explore the concept of nonreciprocity in coupled two-mode systems using a geometric mapping to the Poincaré sphere. From this perspective, we recast the...

Avoiding Catastrophes in Cyberspace through Smarter Testing: How to prevent Heartbleed-like disasters using readily available testing technologies

October 16, 2014

Author(s)

Apostol T. Vassilev, Christopher Celi

The recently discovered Heartbleed bug in OpenSSLs implementation of Internet security protocols and the aftermath from dealing with its consequences...

Mechanical property changes in porous low-k dielectric thin films during processing

October 15, 2014

Author(s)

Gheorghe Stan, Richard S. Gates, Premsagar P. Kavuri, Jessica Torres, David Michalak, Canay Ege, Jeff Bielefeld, Sean W. King

The design of future generations of Cu-low-k dielectric interconnects with reduced electronic crosstalk often requires engineering materials with an optimal...

gamma-prime Phase Stability and Phase Equilibrium in Ternary Co-W-Al at 900 °C

October 15, 2014

Author(s)

Eric Lass, Maureen E. Williams, Carelyn E. Campbell, Kil-Won Moon, Ursula R. Kattner

Phase equilibria at 900 °C in the Co-rich Co-W-Al ternary system is investigated through isothermal annealing of six alloy compositions for times up to 8000 h...

Parameter Estimation and Uncertainty Evaluation in a Low Rician K-Factor Reverberation-Chamber Environment

October 15, 2014

Author(s)

Chih-Ming Wang, Catherine A. Remley, Ansgar T. Kirk, Ryan J. Pirkl, Christopher L. Holloway, Dylan F. Williams, Paul D. Hale

In this paper we study statistical methods for estimating the Rician K-factor when this parameter is small. A fiducial approach for making statistical inference...

High-Power and High-Linearity Photodetector Modules for Microwave Photonic Applications

October 15, 2014

Author(s)

Frederick N. Baynes, Efthymios Rouvalis, Xiaojun Xie, Qiugui Zhou, Franklyn J. Quinlan, Tara M. Fortier, Scott A. Diddams, Andreas G. Steffan, Andreas Beling, Joe C. Campbell

We demonstrate hermetically packaged InGaAs/InP photodetector modules for high performance microwave photonic applications. The devices employ an advanced...

Modeling RP-1 fuel advanced distillation data using comprehensive two-dimensional gas chromatography coupled with time-of-flight mass spectrometry and partial least squares analysis

October 15, 2014

Author(s)

Thomas J. Bruno, Benjamin Kehimkar, Brendon Parsons, Jamin C. Hoggard, M. C. Billingsley, R. E. Synovec

Recent efforts in predicting rocket propulsion (RP-1) fuel performance through modeling put greater emphasis on obtaining detailed and accurate fuel properties...

Faceting Control in Core/Shell GaN micropillars using Selective Epitaxy

October 15, 2014

Author(s)

Sergiy Krylyuk, Heayoung Yoon, Baomei Wen, Abhishek Motayed, Albert Davydov, Matt N. King

We report on fabricating large-area, vertically aligned GaN epitaxial core-shell micropillar arrays. The two-step process consisted of inductively coupled...

Nanoscale Imaging of Photocurrent and Efficiency in CdTe Solar Cells

October 15, 2014

Author(s)

Leite Marina, maxim abashin, Henri Lezec, anthony gianfrancesco, Alec Talin, Nikolai Zhitenev

The local collection characteristics of grain interiors and grain boundaries in thin film CdTe polycrystalline solar cells are investigated using scanning...

AF4/MALS/QELS/DRI characterization of regular star polymers and their "span analogs"

October 15, 2014

Author(s)

Leena M. Pitkanen, Andre Striegel

Asymmetric flow field-flow fractionation (AF4) coupled with multi-angle static and quasi-elastic light scattering and refractive index detectors was employed...

Expansions for a fundamental solution of Laplace's equation on R³ in 5-cyclidic harmonics

October 14, 2014

Author(s)

Howard S. Cohl, Hans Volkmer

We derive eigenfunction expansions for a fundamental solution of Laplace's equation in three-dimensional Euclidean space in 5-cyclidic coordinates. There are...

Direct and indirect measurements and modeling of methane emissions in Indianapolis, IN

October 13, 2014

Author(s)

Kuldeep R. Prasad

Abstract Based on recent EPA Greenhouse Gas Inventories, releases of methane (CH4) from the natural gas supply chain in the United States account for...

Nonparametric Estimates of Drift and Diffusion Profiles via Fokker-Planck Algebra

October 13, 2014

Author(s)

Steven P. Lund, Michael W. Halter, Joseph B. Hubbard

Diffusion processes superimposed upon deterministic motion play a key role in understanding and controlling the transport of matter, energy, momentum, and even...

Exceptional Superionic Conductivity in Disordered Sodium Decahydro-closo-decaborate

October 13, 2014

Author(s)

Terrence J. Udovic, Motoaki Matsuo, Wan Si NMN Tang, Hui Wu, Vitalie Stavila, Alexei V. Soloninin, Roman V. Skoryunov, Olga A. Babanova, Alexander Skripov, John J. Rush, Atsushi Unemoto, Hitoshi Takamura, Shin-Ichi Orimo

Na 2B 10h 10 undergoes a transition from an ordered monoclinic phase to a disordered, face-centered-cubic phase near 370 K with the emergence of a vacancy-rich...

Self-Assembly of the Triblock Copolymer 17R4 Poly(propylene oxide)₁₄ - Poly(ethylene oxide)₂₄ - Poly(propylene oxide)₁₄ in D₂O

October 13, 2014

Author(s)

Bryna C. Kumi, Boualem Hammouda, Sandra C. Greer

The triblock copolymer Reverse Pluronic 17R4 consists of tow end blocks of poly(propylene oxide)(PPO) with a middle block of poly(ethylene oxide) (PEO): PPO 14...

Persistent Fe Moments in the Normal-State Collapsed-Tetragonal Phase of the Pressure-induced Superconductor Ca_0.67Sr_0.33Fe₂As₂

October 13, 2014

Author(s)

J.R. Jeffries, Nicholas Butch, M.J. Lipp, J.A. Bradley, K. Kirshenbaum, Shanta Saha, J. Paglione, C. Kenny-Benson, Y. Xiao, P. Chow, W. J. Evans

Using non-resonant Fe Κ}β x-ray emission spectroscopy, we reveal that Sr-doping of CaFe 2As 2 decouples the Fe moment from the volume collapse transition...

Insights into carbon nanotube nucleation: Cap formation governed by catalyst interfacial step flow

October 13, 2014

Author(s)

Rahul Rao, Renu Sharma, Frank Abild-Pedersen, Jens Norskov, Avetik R. Harutyunyan

In order to accommodate an increasing demand for carbon nanotubes (CNTs) with desirable characteristics one has to understand the origin of helicity of their...

Synthesis, Thermal Behaviors and Dehydrogenation Kinetics Studies on Lithiated Ethylenediamine

October 13, 2014

Author(s)

Juner Chen, Guotao Wu, Zhitao Xiong, Hui Wu, Yong Shen Chua, Wei Zhou, Bin Liu, Xiaohua Ju, Ping Chen

The lithiation of ethylenediamine by LiH is a step-wise process forming the partially lithiated intermidiates LiN(H)CH 2CH 2NH 2 and [LiN(H)CH 2CH 2NH 2][LiN(H...

Surface Analysis and Materials Characterization for the Study of the Ceramic Tiles HRSI from the Space Shuttle Thermal Protective Systems

October 12, 2014

Author(s)

Hanna Szczepanowska, Thomas Brian Renegar

The orbital thermal management systems fall into two categories, ablative or reusable. The first type was successfully applied on the Apollo missions, the...

A Microliter Capillary Rheometer for Characterization of Protein Solutions

October 10, 2014

Author(s)

Steven D Hudson, Prasad S. Sarangapani, Kalman D. Migler, Jai A. Pathak

Rheometry is an important characterization tool for therapeutic protein solutions because it determines syringeability and relates indirectly to solution...

Ultrafast THz photoconductivity of photovoltaic polymer-fullerene blends: a comparative study correlated with photovoltaic device performance

October 10, 2014

Author(s)

Edwin J. Heilweil, Jin Zuanming, Dominik Gehrig, Clare Dyer-Smith, Frederic Laquai, Mischa Bonn, Dmitry Turchinovich

Ultrafast photo-induced carrier dynamics in prototypical low band-gap polymer:fullerene photovoltaic blend films PTB7:PC70BM and P3HT:PC70BM is investigated...

Dynamic customization, validation and integration of product data models using semantic web tools

October 10, 2014

Author(s)

Allison Barnard Feeney, Sylvere Krima, sebti foufou

Product Lifecycle Management (PLM) requires robust solutions for representing and integrating product data models. Product data models enable information...

Neutron Scattering Studies of the Ferroelectric Distortion and Spin Dynamics in the Type-1 Multiferroic Perovskite Sr_0.56Ba_0.44MnO₃

October 9, 2014

Author(s)

Daniel K. Pratt, Jeffrey W. Lynn, James Mais, Omar Chmaissem, Dennis E. Brown, Stanislaw Kolesnik, Bogdan Dabrowski

The magnetic order, spin dynamics, and crystal structure of the multiferroic Sr 0.56Ba 0.44MnO 3 have been investigated using neutron and x-ray scattering...

Kitaev chains with long-range interactions

October 9, 2014

Author(s)

Davide Vodola, Luca Lepori, Elisa Ercolessi, Alexey Gorshkov, Guido Pupillo

We propose and analyze a generalization of the Kitaev chain for fermions with long-range p-wave pairing, which decays with distance as a power-law with exponent...

On Statistical Modeling and Forecasting of Energy Usage in Smart Grid

October 8, 2014

Author(s)

Wei Yu, Dou An, David W. Griffith, Qingyu Yang, Guobin Xu

Developing effective energy resource management in the smart grid is challenging because the entities in both the demand and supply sides experience various...

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