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Search Publications

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Displaying 3226 - 3250 of 74634

A 3-DOF MEMS motion stage for scanning tunneling microscopy

January 1, 2022
Author(s)
Taekyung Kim, Jason J. Gorman
Piezoelectric tube scanners used in most conventional scanning tunneling microscopes (STM) are highly resonant mechanisms that require a low-bandwidth controller ( 1 kHz) to minimize ringing, which prohibitively limits scan speed. In addition, hysteresis

A Methodology for Modeling Interoperability for Smart Sensors in Smart Grids

January 1, 2022
Author(s)
Edward Griffor, Kang B. Lee, Gerald J. FitzPatrick, Eugene Song
Smart sensors in smart grids provide real-time data and status of bidirectional flows of energy for monitoring, protection, and control of grid operations to improve reliability and resilience. Smart sensor interoperability is major challenges for smart

A Methodology for Modeling Interoperability for Smart Sensors in Smart Grids

January 1, 2022
Author(s)
Edward Griffor, Eugene Song, Kang B. Lee, Gerald J. FitzPatrick
Smart sensors in smart grids (SGs) can provide real-time data and status of modernized, bidirectional flows of energy, electrical power grids for monitoring, protection, and control of grid operations to improve reliability and resilience. Smart sensor

Core-shell and Egg-shell Zeolite Catalysts for Enhanced Hydrocarbon Processing

January 1, 2022
Author(s)
Thuy Tran Le, Kumari Shilpa, Choongsze Lee, Sungmin Han, Conan Weiland, Simon Bare, Paul Dauenhauer, Jeffrey Rimer
Developing structure-performance relationships with the underlying goal of optimizing known zeolite catalysts involves the manipulation of their physicochemical properties. Here, we systematically assessed the impact of mesoscopic gradients in acid site

Crystal structure and thermochromic behavior of the quasi-0D lead-free organic-inorganic hybrid compounds (C7H9NF)8M4I16 (M = Bi, Sb)

December 31, 2021
Author(s)
Winnie Wong-Ng, Xiochen Zhao, Yikai Fu, Yunlin Lei, Chao Wang, Wei Zhou, Shouyu Wang, Weifang Liu
Quasi 0-D lead-Free thermochromic organic-inorganic hybrid single crystals (C7H9NF)8M4I16 (M = Bi, Sb) were synthesized by a conventional solvothermal reaction method. The crystal structures were analyzed using single crystal X-ray diffraction (SXRD)

Improving Particle Collection Efficiency of Sampling Wipes used for Trace Chemical Detection

December 31, 2021
Author(s)
J Greg Gillen, Jeffrey Lawrence, Edward Sisco, Matthew E. Staymates, Liz Robinson, Jennifer R. Verkouteren, Alexander Bulk
Improvement of the particle collection efficiency of sampling wipes is desirable for optimizing the performance of many wipe-based chemical analysis techniques used for trace chemical screening applications. In this note, commercially available Teflon

Understanding Reentrance in Frustrated Magnets: The Case of the Er 2 Sn 2 O 7 Pyrochlore

December 30, 2021
Author(s)
D. R. Yahne, D. Pereira, L. D. Jaubert, L. D. Sanjeewa, M. Powell, J. W. Kolis, Guangyong Xu, M. Enjalran, M. J. Gingras, K. A. Ross
Reentrance is a recurring theme found in a variety of physical systems, including spin glasses and black hole thermodynamics, yet the underlying microscopic mechanisms leading to it are rarely investigated in detail. Here we provide a detailed

Growth and Characterization of Large (Y,La)TiO 3 and (Y,Ca)TiO 3 Single Crystals

December 29, 2021
Author(s)
Sajna Hameed, Joseph Joe, Laxman Thoutam, Javier Garcia Barriocanal, Biqiong Yu, Guichuan Yu, S. Chi, Tao Hong, Travis Williams, John W. Freeland, Peter M. Gehring, Zhijun Xu, Masaaki Matsuda, Bharat Jalan, Martin Greven
The Mott-insulating rare-earth titanates (RTiO 3, R being a rare-earth ion) are an important class of materials that encompasses interesting spin-orbital phases, ferromagnet-antiferromagnet and insulator-metal transitions. The growth of these materials has

In situ absorption synchrotron measurements, predictive modeling, microstructural analysis, and scanning probe measurements of laser melted Ti-6Al-4V single tracks for additive manufacturing applications

December 29, 2021
Author(s)
Nicholas Derimow, Edwin Schwalbach, Jake Benzing, Jason Killgore, Aly Artusio-Glimpse, Nik Hrabe, Brian Simonds
In this work, the fundamental processing-structure-property (PSP) relationships that govern laser-based additive manufacturing were investigated with the Ti-6Al-4V alloy. X-ray synchrotron imaging carried out in conjunction with in-situ integrating sphere

Report on High Energy Arcing Fault Experiments - Experimental Results from Low Voltage Switchgear Enclosures

December 29, 2021
Author(s)
Gabriel Taylor, Anthony D. Putorti Jr., Scott Bareham, Christopher U. Brown, Wai Cheong Tam, Edward Hnetkovsky, Andre Thompson, Michael Selepak, Philip Deardorff, Kenneth Hamburger, Nicholas Melly, Kenneth Miller
This report documents an experimental program designed to investigate High Energy Arcing Fault (HEAF) phenomena for low-voltage metal enclosed switchgear containing aluminum conductors. This report covers full-scale laboratory experiments using

Report on High Energy Arcing Fault Experiments - Experimental Results from Open Box Enclosures

December 29, 2021
Author(s)
Gabriel Taylor, Anthony D. Putorti Jr., Scott Bareham, Christopher U. Brown, Wai Cheong Tam, Edward Hnetkovsky, Andre Thompson, Michael Selepak, Philip Deardorff, Kenneth Hamburger, Nicholas Melly, Kenneth Miller, Kenneth Armijo, Paul Clem, Alvaro Cruz-Cabrera, Byron Demosthenous, Austin Glover, Chris LaFleur, Raymond Martinez, James Taylor, Rana Weaver, Caroline Winters
This report documents an experimental program to investigate High Energy Arcing Fault (HEAF) phenomena. The experiments provide data to better characterize the arc to improve the prediction of arc energy emitted during a HEAF event. An open box allows for

Markov Multi-Beamtracking in SU-MIMO with 60 GHz Mobile Channel Measurements

December 28, 2021
Author(s)
Steve Blandino, Jelena Senic, Camillo Gentile, Derek Caudill
Beamforming training refers to the exhaustive scan over which the receiver and transmitter beams are steered along a predefined set of angles to determine the beam pairs that coincide with the dominant channel paths, for spatial multiplexing. In the

Physical Properties of the Quasi-Two-Dimensional Square Lattice Antiferromagnet Ba 2 FeSi 2 O 7

December 28, 2021
Author(s)
Tae-Hwan Jang, Seung-Hwan Do, Minseong Lee, Hui Wu, Craig Brown, Andrew D. Christianson, Sang-Wook Cheong, Jae-Hoon Park
We report magnetization (χ, M), magnetic specific heat (CM), and neutron powder diffraction results on a quasi-two-dimensional (2D) S = 2 square lattice antiferromagnet Ba 2FeSi 2O 7 consisting of FeO 4 tetrahedrons with highly compressive tetragonal

Progress in Materials Data Availability and Application: A Review

December 28, 2021
Author(s)
Chandler A. Becker, James A. Warren
Materials researchers are generating data in ever-increasing volumes, and this data is, in turn, fueling the discovery and design of new materials. These changes are enabled by advances in data capture via laboratory information management systems (LIMS)

Disposition of Fluorine on New Firefighter Turnout Gear: Implications for Occupational Exposure

December 27, 2021
Author(s)
Derek Muensterman, Ivan Titaley, Graham Peaslee, Leah Minc, Liliana Cahuas, Alix Rodowa, Yuki Horiuchi, Shogo Yamane, Thierry Fouquet, John Kissel, Courtney Carignan, Jennifer Field
Firefighter turnout gear is essential for reducing occupational exposure to hazardous chemicals during training and fire events. Per-and polyfluoroalkyl substances (PFASs) are observed in firefighter serum, and possible occupational sources include the air
Displaying 3226 - 3250 of 74634