Journals

In situ oxidation and reduction of cerium dioxide studied by scanning transmission electron microscopy

December 1, 2018

Author(s)

Aaron C. Johnston-Peck, Wei-Chang D. Yang, Jonathan P. Winterstein, Renu Sharma, Andrew A. Herzing

The Trouble with Terms

December 1, 2018

Author(s)

Celia Paulsen

Thousands of new words have been invented in the last decade to help us talk about technology. An analysis of the NIST glossary database shows insights into how...

Structure of Voltage-Dependent Anion Channel-Tethered Bilayer Lipid Membranes Determined using Neutron Reflectivity

December 1, 2018

Author(s)

David Paul Hoogerheide, Sergei Yu Noskov, Adam J. Kuszak, Tatiana K. Rostovtseva, Hirsh Nanda

Neutron reflectivity (NR) has emerged as a powerful technique to study the structure and behavior of membrane proteins at planar lipid interfaces. Integral...

Flow sensor based on the snap-through detection of a curved micromechanical beam

December 1, 2018

Author(s)

Yoav Kessler, Robert Ilic, Slava Krylov, Alexander Liberzon

We report on a flow velocity measurement technique based on snap-through detection of an electrostatically actuated, bistable micromechanical beam. We show that...

Evolution of Reference Materials for the Determination of Organic Nutrients in Food and Dietary Supplements - A Critical Review

December 1, 2018

Author(s)

Stephen Wise, Melissa M. Phillips

For over 40 years, food-matrix certified reference materials (CRMs) have been available for the determination of trace element content, and a wide variety of...

Net-zero Nation: HVAC and PV Systems for Residential Net-Zero Energy Buildings across the United States

December 1, 2018

Author(s)

Wei Wu, Harrison Skye

This study compared the energy performance and initial cost of photovoltaic (PV) and heating, ventilating, and air-conditioning (HVAC) equipment for a...

Neutron Scattering in the Biological Sciences: Progress and Prospects

December 1, 2018

Author(s)

Rana Ashkar, Hassina Z. Bilheux, Heliosa Bordallo, Robert Briber, David J. E. Callaway, Xiaolin Cheng, Xiang-Qiang Chu, Joseph E. Curtis, Mark Dadmun, Paul Fenimore, David Fushman, Frank Gabel, Kushol Gupta, Frederick Herberle, Frank Heinrich, Liang Hong, John Katsaras, Zvi Kelman, Eugenia Kharlampieva, Gerald R. Kneller, Andrey Kovalevsky, Susan T. Krueger, Paul Langan, Raquel Lieberman, Yun Liu, Mathias Losche, Edward Lyman, Yimin NMN Mao, John Marino, Carla Mattos, Flora Meilleur, Peter Moody, Jonathan D. Nickels, William B. O'Dell, Hugh O'Neill, Ursula Perez-Salas, Judith Peters, Loukas Petridis, Alexei P. Sokolov, Robert Sutherland, Norman Wagner, Michael NMN Weinrich, Kevin Weiss, Troy Wymore, Yang Zhang, Jeremy C. Smith

The scattering of neutrons can be used to provide information on the structure and dynamics of biological systems on multiple scales of length and time...

Using silica-fiber coupling to extend superconducting nanowire single-photon detectors into the infrared

November 30, 2018

Author(s)

Paulina S. Kuo

There is growing interest in superconducting nanowire single-photon detectors (SNSPDs) for their high detection efficiency, low noise, and broad wavelength...

Towards Cyber Resiliency in the Context of Cloud Computing

November 30, 2018

Author(s)

Xiaoyan Sun, Peng Liu, Anoop Singhal

Correct and accurate mission impact assessment is the essential prerequisite of mission-aware cyber resilience. However, an overlooked gap has been existing...

Stochastic Search Methods for Mobile Manipulators

November 30, 2018

Author(s)

Amoako-Frimpong Samuel Yaw, Matthew Messina, Henry Medeiros, Jeremy Marvel, Roger V. Bostelman

Mobile manipulators are a potential solution to the increasing need for additional flexibility and mobility in industrial applications. However, they tend to...

Best Practices for Computing Transport Properties 1. Self-Diffusivity and Viscosity from Equilibrium Molecular Dynamics

November 29, 2018

Author(s)

Edward Maginn, Richard A. Messerly, Daniel Carlson, Daniel Roe, J. R. Elliott

The ability to predict transport properties (i.e. diffusivity, viscosity, conductivity) is one of the primary benefits of molecular simulation. Although most...

Spin decoherence in a two-qubit CPHASE gate: the critical role of tunneling noise

November 27, 2018

Author(s)

Peihao Huang, Neil M. Zimmerman, Garnett W. Bryant

The rapid progress in the manipulation and detection of semiconductor spin qubits enables the experimental demonstration of a high fidelity two-qubit logic gate...

A kinetic-inductance-based superconducting memory element with shunting and sub-nanosecond write times

November 27, 2018

Author(s)

Adam N. McCaughan, Michael L. Schneider, Sae Woo Nam, Emily Toomey, Karl Berggren

We present a kinetic-inductance-based superconducting memory element that had non-destructive readout, femtojoule read and write energies, had both read and...

Selective Suppression of Excipient Signals in 2D 1H-13C Methyl Spectra of Biopharmaceutical Products

November 27, 2018

Author(s)

Luke W. Arbogast, Frank Delaglio, Joel R. Tolman, John P. Marino

While the use of 1H-13C methyl correlated NMR spectroscopy at natural isotopic abundance has been demonstrated as feasible on protein therapeutics as large as...

Record High Hydrogen Storage Capacity in the Metal-Organic Framework Ni₂(m-dobdc) at Near-Ambient Temperatures

November 27, 2018

Author(s)

Matthew T. Kapelewski, Tomce Runcevski, Jacob Daniel Tarver, Henry Z. H. Jiang, Katherine E. Hurst, Philip A. Parilla, Anthony Ayala, Thomas Gennett, Stephen A. FitzGerald, Craig Brown, Jeffrey R. Long

H 2 provides promise as a clean automobile fuel, but storage typically requires high pressure to achieve reasonable driving ranges. Adsorption of H 2 in metal...

Dynamics of Architecturally Engineered All-Polymer Nanocomposites

November 27, 2018

Author(s)

Erkan N. Senses, Madhu Sudan Tyagi, Madeleine Pasco, Antonio Faraone

Highly mechanosensitive ion channels from graphene-embedded crown ethers

November 26, 2018

Author(s)

Alta Y. Fang, Kenneth Kroenlein, Demian Riccardi, Alexander Smolyanitsky

The ability to tune ionic permeation across nanoscale pores profoundly impacts diverse fields from nanofluidic computing to drug delivery. Here, we take...

Effect of Mesh Wick Geometry on the Maximum Heat Transfer Rate of Flat-Micro Heat Pipes (FMHPs) with Multi-Heat Sources and Sinks

November 26, 2018

Author(s)

Bimal Subedi1, Sung Hyoun Kim, Seok Pil Jang, Mark A. Kedzierski

Molecular Sieving of Ethylene from Ethane using a Rigid Metal-Organic Framework

November 26, 2018

Author(s)

Rui-Biao Lin, Libo Li, Hao-Long Zhou, Hui Wu, Chaohui He, Shun Li, Rajamani Krishna, Jinping Li, Wei Zhou, Banglin Chen

There are great challenges in developing efficient adsorbents to replace currently used and energy-intensive cryogenic distillation processes for olefin...

Validation of Single Particle ICP-MS for Routine Measurements of Nanoparticle Size and Number Size Distribution

November 25, 2018

Author(s)

Antonio R. Montoro Bustos, Premsagar P. Kavuri, Antonio M. Possolo, Natalia Farkas, Andras Vladar, Karen E. Murphy, Michael R. Winchester

Single particle inductively coupled plasma-mass spectrometry (spICP-MS) is an emerging technique capable of measuring nanoparticle size and number concentration...

Determination of test cycle sensitivity coefficients for the Rockwell HR45N hardness scale

November 23, 2018

Author(s)

Samuel R. Low III, Renato R. Machado

This article describes work carried out to determine test cycle sensitivity coefficients for the Rockwell HR45N hardness scale. Sensitivity coefficients were...

Technique to reduce bending issues in Rockwell B scale hardness reference blocks: preliminary results

November 23, 2018

Author(s)

Samuel R. Low III, Renato R. Machado

This paper describes a new design for HRBW scale reference blocks, that has the potential to greatly reduce the bending of brass blocks and thus improve short...

Determining surface chemical composition of silver nanoparticles during sulfidation by monitoring the ligand shell

November 23, 2018

Author(s)

John M. Pettibone, Justin M. Gorham, Jingyu Liu

Evaluating the surface and core compositions of transforming nanoparticles (NP) represents a significant measurement challenge but is necessary for predicting...

Recommended electron-impact excitation and ionization cross sections for Be I

November 23, 2018

Author(s)

FNU Dipti, Tapasi Das, klaus Bartschat, I Bray, D Fursa, O Zatsarinny, C Ballance, H-K Chung, Yuri Ralchenko

Analytic fits to the recommended electron-impact excitation and ionization cross sections for Be I are presented. The lowest 19 terms of configurations 2snl (n...

Approximating vibronic spectroscopy with imperfect quantum optics

November 23, 2018

Author(s)

W.R. Clements, Jelmer Renema, Andreas Eckstein, Antonio A. Valido, Adriana Lita, Thomas Gerrits, Sae Woo Nam, Steven Kolthammer, Joonsuk Huh

We study the impact of experimental imperfections on a recently proposed protocol for performing quantum simulations of vibronic spectroscopy. Specifically, we...

Thermodynamic analysis of the topologically close packed ? phase in the Co-Cr system

November 22, 2018

Author(s)

Peisheng Wang, Matthew C. Peters, Ursula R. Kattner, Kamal Choudhary, Gregory B. Olson

Density functional theory (DFT) calculations show that a thermodynamic description considering the magnetic contribution to the total energy for the end-members...

Quantum Process Fidelity Bounds from Sets of Input States

November 21, 2018

Author(s)

Emanuel H. Knill, Karl H. Mayer

We investigate the problem of bounding the quantum process fidelity given bounds on the fidelities between target states and the action of a process on a set of...

An energy-resolved atomic scanning probe

November 21, 2018

Author(s)

Daniel S. Gruss, Chih-Chun Chien, Julio T. Barreiro, Massimiliano Di Ventra, Michael P. Zwolak

The density of states is a concept that is ubiquitous in classical and quantum physics, since it quantifies the energy distribution of states available in a...

Detection of Brodifacoum and other Rodenticides in Drug Mixtures using Thermal Desorption Direct Analysis in Real Time Mass Spectrometry (TD-DART-MS)

November 21, 2018

Author(s)

Liz Robinson, Edward Sisco

In recent months, there has been increased reporting of seized drug and toxicology cases containing rodenticides, or superwarfarins, the active ingredient in...

Utilizing confocal laser scanning microscopy for rapid optical characterization of graphene

November 20, 2018

Author(s)

Vishal Panchal, Yanfei Yang, Guangjun Cheng, Jiuning Hu, Mattias Kruskopf, Chieh-I Liu, Albert Rigosi, Christos Melios, Angela R. Hight Walker, David B. Newell, Olga Kazakova, Randolph Elmquist

Confocal laser scanning microscopy (CLSM) is a non-destructive, highly-efficient optical characterization method for large-area analysis of graphene on...