Journals

Equilibration of the planar modes of ultracold two-dimensional ion crystals in a Penning trap

May 11, 2020

Author(s)

Chen Tang, Athreya Shankar, Daniel Dubin, Dominic Meiser, Scott Parker, John J. Bollinger

Planar thermal equilibration is studied using direct numerical simulations of ultracold two-dimensional ion crystals in a Penning trap with a rotating wall. The

Efficient electrically-powered CO2-to-ethanol via suppression of deoxygenation

May 11, 2020

Author(s)

Xue Wang, Wang Ziyun, F. P. Garcia de Arquer, Cao-Thang Dinh, Adnan Ozden, Yuguang C. Li, Dae-Hyun Nam, Jun Li, Yi-Sheng Liu, Joshua Wicks, Zitao Chen, Miaofang Chi, Bin Chen, Ying Wang, Jason Tam, Jane Y. Howe, Andrew Proppe, Peter Todrovic, Fengwang Li, Tao-Tao Zhuang, Christine M. Garbardo, Ahmad R. Kirmani, Christopher McCallum, Yanwei Lum, Mingchuan Luo, Yimeng Min, Aoni Xu, Colin P. O'Brien, Bello Stephen, Bin Sun, Alexander H. Ip, Lee Richter, Shana O. Kelley, David Sinton, Edward H. Sargent

The carbon dioxide electroreduction reaction (CO2RR) provides avenues to the production renewable ethanol, a high-energy-density fuel. Unfortunately, until now

Heterogeneous photodiodes on silicon nitride waveguides

May 11, 2020

Author(s)

Qianhuan Yu, Junyi Gao, Nan Ye, Baiheng Chen, Keye Sun, Linli Xie, Kartik Srinivasan, Michael Zervas, Gabriele Navickaite, Michael Geiselmann, Andreas Beling

Heterogeneous integration through low-temperature die bonding is a promising technique to enable high-performance III-V photodetectors on the silicon nitride

Assessing the Robustness of Powder Rheology and Permeability Measurements

May 11, 2020

Author(s)

Louis-Philippe Lefebvre, Justin Whiting, Boris Nijikovski, Sallah Eddine Brika, Haniyeh Fayazfar, Ola Lyckfeldt

Powder metallurgy processes rely on powder flowability. However, flowability is not an intrinsic property and depends on the measurement conditions. Standards

Atomic-scale control of tunneling in donor-based devices

May 11, 2020

Author(s)

Xiqiao Wang, Jonathan E. Wyrick, Ranjit V. Kashid, Pradeep N. Namboodiri, Scott W. Schmucker, Andrew Murphy, Michael D. Stewart, Richard M. Silver

Atomically precise donor-based quantum devices are a promising candidate for scalable solid- state quantum computing. Atomically precise design and

Processing-Structure-Property Relationships of Polycarbonate Samples Prepared by Fused Filament Fabrication

May 11, 2020

Author(s)

Lichen Fang, Yishu Yan, Ojaswi Agarwal, Jonathan Seppala, Kevin Hemker, Sung Hoon Kang

Fused filament fabrication (FFF) is one of the most popular additive manufacturing processes. However, advanced applications of FFF are still limited by the

Fast surrogate modeling using dimensionality reduction in model inputs and field output: Application to additive manufacturing

May 11, 2020

Author(s)

Manav Vohra, Paromita Nath, Sankaran Mahadevan, Yung-Tsun Lee

A novel approach to surrogate modeling motivated by recent advancements in parameter dimension reduction isproposed. Specifically, the approach aims to speed-up

Extraordinary performance of semiconducting metal oxide gas sensors using dielectric excitation

May 11, 2020

Author(s)

Andrei A. Kolmakov, Radislav A. Potyrailo, Steven Go, Daniel Sexton, Xiaxi Li, Nasr Alkadi, Bruce Amm, Richard St-Pierre, Brian Scherer, Majid Nayeri, Guang Wu, Christopher Collazo-Davila, Doug Forman, Chris Calvert, Craig Mack, Philip Mcconnell

Electrical response of metal oxide semiconducting (MOS) materials to gases was discovered 70 years ago [1] and miniature low-cost MOS chemiresistors became the

Modeling motional energy spectra and lattice light shifts in optical lattice clocks

May 8, 2020

Author(s)

Kyle Beloy, Will McGrew, Xiaogang Zhang, Daniele Nicolodi, Robert J. Fasano, Youssef Hassan, Roger Brown, Andrew Ludlow

We develop a model to describe the motional (i.e., external degree of freedom) energy spectra of atoms trapped in a one-dimensional optical lattice, taking into

Prevention of Cooktop Ignition Using Detection and Multi-Step Machine Learning Algorithms

May 8, 2020

Author(s)

Wai Cheong Tam, Eugene Yujun Fu, Amy E. Mensch, Anthony P. Hamins, Christina Yu, Grace Ngai, Hong va Leong

This paper presents a study to examine the potential use of machine learning models to build a real-time detection algorithm for prevention of kitchen cooktop

Microelectrode Studies of S-NDR Copper Electrodeposition: Potentiodynamic and Galvanodynamic Measurements and Simulations

May 8, 2020

Author(s)

Trevor Braun, Daniel Josell, Thomas P. Moffat

Copper electrodeposition from a CuSO4 – H2SO4 electrolyte containing a polyether suppressor and Cl- concentrations (0 – 100) μmol/L is examined using a 25 μm

Substitutional Point Defect Mechanisms and Structural Relaxations for Manganese in SrTiO3: Bridging the Metrology Concentration Gap

May 7, 2020

Author(s)

Russell Maier, Igor Levin, Eric Cockayne, Matthew P. Donohue, Giannantonio Cibin

The methodology for experimentally verifying the point-defect chemistry (site of substitution, valence, and chargecompensation mechanisms) in manganese-doped

Microfabricated carbon nanotube bolometers

May 7, 2020

Author(s)

Nathan Tomlin, Christopher Yung, Michelle Stephens, Igor Vayshenker, Zach Castleman, Matthiew Denoual, Ginger Drake, Nat Farber, David Harber, Karl Heuerman, Greg Kopp, Heather Passe, Erik Richard, Joel Rutkowski, Jacob Sprunck, Samuel Van Dreser, Wengang Zheng

Multi-wall vertically aligned carbon nanotubes (VACNTs) are nearly ideal absorbers due to their exceptionally low reflectance over a broad wavelength range

Modeling the Electromagnetic Scattering Characteristics of Carbon Nanotube Composites Characterized by 3D Tomographic Transmission Electron Microscopy

May 7, 2020

Author(s)

Ahmed M. Hassan, Md Khadimul Islam, Spencer On, Bharath Natarajan, Itai Stein, Noa Lachman, Estelle Cohen, Brian L. Wardle, Renu Sharma, James Liddle, Edward Garboczi

In nearly all prior modeling studies of the electromagnetic properties of carbon nanotube (CNT) composites, the three-dimensional (3D) shape and spatial

T1 Mapping Performance and Measurement Stability: Results from the Multi-National T1MES (T1 Mapping and ECV Standardization) Phantom Program

May 7, 2020

Author(s)

Gabriella Captur, Abhiyan Bandari, Ye Yang, Richard James, Giulia Benedetti, Camilla Torlasco, Lewis Ricketts, Redha Boubertakh, Katy Keenan, Rüediger Brüehl, Bernd Itterman, Nasri Fatih, John Greenwood, Leonie Paulis, Chris Lawton, Chiara Bucciarelli-Ducci, Hildo Lamb, Richard Steeds, Steve Leung, Colin Berry, Sinitsyn Valentin, Andrew Flett, Charlotte de Lange, Francesco DeCobelli, Magalie Viallon, Pierre Croisille, David Higgins, Andreas Greiser, Wenjie Peng, Christian Hamilton-Craig, Wendy Strugnell, Tom Dresselaers, Andrea Barison, Dana Dawson, Andrew Taylor, François-Pierre Mongeon, Sven Plein, Daniel Messroghli, Mouaz Al-Mallah, Stuart Grieve, Massimo Lombardi, Jihye Jang, Michael Salerno, Nish Chaturvedi, Peter Kellman, David Bluemke, Reza Nezafat, Peter Gatehouse, James C. Moon

Competition between Factors Determining Bright versus Dark Atomic States within aLaser Mode

May 7, 2020

Author(s)

Brian Hemingway, T. G. Atkin, Steven Peil, James(Trey) Porto

We observe bimodal uorescence patterns from atoms in a fast atomic beam when the laser excitation occurs in the presence of a magnetic eld and the atoms sample

Computational Search for Magnetic and Non-magnetic 2D Topological Materials using Unified Spin-orbit Spillage Screening

May 7, 2020

Author(s)

Kamal Choudhary, Kevin F. Garrity, Jie Jiang, Ruth Pachter, Francesca M. Tavazza

Two-dimensional topological materials (TMs) have a variety of properties that make them attractive for applications including spintronics and quantum

Photo-tunable hydrogel mechanical heterogeneity informed by predictive transport kinetics model

May 6, 2020

Author(s)

Callie I. Higgins, Jason P. Killgore, Frank W. DelRio, Stephanie J. Bryant, Robert R. McLeod

Mimicking the three-dimensional (3D) mechanical and chemical properties of distinctly different, adjacent biological tissues is crucial to study and to

Green Composite of Instant Coffee and Poly(Vinyl Alcohol): an Excellent Transport UV-Shielding Material with Superior Thermal-Oxidative Stability

May 6, 2020

Author(s)

Yadong Lyu, Xiaohong Gu, Yimin NMN Mao

Producing ultraviolet-light-shielding (UV-shielding) materials via green chemistry has been attracting researchers' attention. Herein, a polymer composite

Halide-induced Step Faceting and Dissolution Energetics from Atomistic Machine Learned Potentials on Cu(100)

May 6, 2020

Author(s)

Mitchell C. Groenenboom, Thomas P. Moffat, Kathleen Schwarz

On the Development and Characterization of a Transparent Enclosure for 360° View Video Cameras to Observe Fire Dynamics in Situ

May 5, 2020

Author(s)

Matthew S. Hoehler

360-degree video recorded in fires provides a unique perspective that allows the viewer to change the field of view as regions of interest vary in space and

Dielectric loss extraction for superconducting microwave resonators

May 5, 2020

Author(s)

Corey Rae H. McRae, Russell Lake, Junling Long, Mustafa Bal, Xian Wu, Battogtokh Jugdersuren, Thomas Metcalf, Xiao Liu, David P. Pappas

The investigation of two-level-state (TLS) loss in dielectric materials and interfaces remains at the forefront of materials research in superconducting quantum

Readily Accessible Benzo[d]thiazole Polymers for Nonfullerene Solar Cells with >16% Efficiency and Potential Pitfalls

May 4, 2020

Author(s)

Liang-Wen Feng, Jianhua Chen, Subhrangsu Mukherjee, Yao Chen, Ding Zheng, Joseph Strzalka, Gang Wang, Dean DeLongchamp, Antonio Facchetti, Tobin Marks

Here we report facile, high-yield synthetic access to the difluoro BTA building block, 4,7-bis(5-bromo-4-(2-hexyl-decyl)-thiophen-2-yl)-5,6-difluoro-2-

Tuning interfacial Dzyaloshinskii-Moriya interactions in thin amorphous ferrimagnetic alloys

May 4, 2020

Author(s)

Yassine Quessab, Jun-Wen Xu, Chung Ting Ma, W. Zhou, Grant A. Riley, Justin Shaw, Hans Nembach, S. J. Poon, Andrew D. Kent

Skyrmions can be stabilized in magnetic systems with broken inversion symmetry and chiral interactions, such as Dzyaloshinskii-Moriya interactions (DMI)

Nanopore sequencing and the Shasta toolkit enable efficient de novo assembly of eleven human genomes

May 4, 2020

Author(s)

Justin M. Zook, Kishwar Shafin, Trevor Pesout, Ryan Lorig-Roach, Marina Haukness, Hugh E. Olsen, Miten Jain, Benedict Paten

De novo assembly of a human genome using nanopore long-read sequences has been reported, but it used more than 150,000 CPU hours and weeks of wall-clock time

Determining Flow Resistance through Vegetation Canopy

May 2, 2020

Author(s)

Ryan L. Falkenstein-Smith, Kevin B. McGrattan

This study documents the measurement of the wind resistance of different types of vegetation. The measurements are made in a wind tunnel with a 2.0 m test

Reporting requirements to increase the reproducibility and comparability of research on microplastics

May 2, 2020

Author(s)

Jennifer Lynch

The ubiquitous pollution of the environment with microplastics (a diverse suite of contaminants) is of growing concern for modern environmental science and

Low-loss, high-bandwidth fiber-to-chip coupling using capped adiabatic tapered fibers

May 1, 2020

Author(s)

Saeed Khan, Jeff Shainline, Richard Mirin, Sae Woo Nam, Sonia Buckley, Jeff Chiles

We demonstrate adiabatically tapered fibers terminating in sub-micron tips that are clad with a higher-index material for coupling to an on-chip waveguide. This

All-fiber frequency comb at 2 µm providing 1.4-cycle pulses

May 1, 2020

Author(s)

Sida Xing, Abijith S. Kowligy, Daniel Lesko, Alexander Lind, Scott Diddams

We report an all-fiber approach to generating sub-2-cycle pulses at 2 µm and a corresponding octave-spanning optical frequency comb. Our configuration

Accurate Integral Counting Using Multi-channel Analyzers

May 1, 2020

Author(s)

Ryan P. Fitzgerald, Lynne E. King

Many techniques in radionuclide metrology rely on accurate measurement of the total count rate, that is integral counting, from a detector. In modern