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13th Nuclear Plant Instrumentation, Control and Human-Machine Interface Technologies, NPIC and HMIT 2023

作者： Phero, Timothy L. Novich, Kaelee A. Fujimoto, Kiyo T. Khanolkar, Amey R. Johnson, Benjamin C. McMurtrey, Michael D. Estrada, David Jaques, Brian J. Micron School of Materials Science and Engineering Boise State University BoiseID United States Department of Electrical and Computer Engineering Boise State University BoiseID United States Center for Advanced Energy Studies Idaho FallsID United States Idaho National Laboratory Idaho FallsID United States

ISBN: (纸本)9780894487910

Real-time monitoring of materials in harsh environments is a crucial technique towards reducing innovation time in nuclear systems. The successful measurement of real time, in-situ strain measurements during nuclear reactor operation requires innovative sensing solutions, including novel sensing strategies as well as advanced sensor design, manufacturing, and materials selection. In this paper, we will discuss two primary strategies for in-situ strain measurement strategies: additively manufactured (AM) capacitive strain gauges (CSGs) and digital image correlation (DIC). Current commercial strain gauges have limited applications in reactors due to the harsh operating conditions and non-trivial attachment strategies (i.e., welding, epoxy-adhesive) that can affect both the sensing performance and the underlying substrate under testing. AM CSGs are a viable solution as they have a low profile, low hysteresis, and wireless sensing integration capabilities that will enhance nuclear sensing technologies. In this work, the mechanical and thermal performance of the AM CSGs were tested up to 300 °C using ASTM standardized testing procedures to simulate the temperatures found in existing light water reactors. The AM CSGs had a similar performance across multiple samples which correlates to analytical models. This work leads towards the development of CSGs designed for higher temperatures and additional environmental factors found in Generation-IV reactors. Non-contact sensors, such as DIC, offer a less destructive way to measure deformation of materials when compared to alternative methods of in-situ strain determination, such as weldable strain gauges. However, DIC requires high contrast surfaces, which often relies on the implementation of artificial patterns. Using traditional splatter techniques to fabricate these patterns have limitations, including poor surface adhesion and reproducibility. In this work, AM fabrication techniques were implemented to avoid such limitatio

关键词： Image correlation

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First write pulse-induced interface damage in ferroelectric field-effect transistors

First write pulse-induced interface damage in ferroelectric ...

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IEEE International Workshop Integrated Reliability

作者： Priyankka Gundlapudi Ravikumar Chinsung Park Prasanna Venkatesan Ravindran Nashrah Afroze Mengkun Tian Winston Chern Suman Datta Shimeng Yu Souvik Mahapatra Asif Khan School of Electrical and Computer Engineering Georgia Institute of Technology GA USA Institute of Materials GA USA School of Material Science and Engineering Georgia Institute of Technology GA USA Department of Electrical Engineering Indian Institute of Technology Bombay Mumbai India

ISBN: (数字)9798331517168

ISBN: (纸本)9798331517175

We report the first direct experimental evidence that the first write pulse (cycle 1) generates more than half of the total traps generated until the complete collapse of the memory window at cycle $10^{4}-10^{5}$, in ferroelectric field effect transistors (FEFETs). This conclusion is reached by tracking the generated traps by a combination of subthreshold slope and charge pumping measurements in a Ferroelectric field-effect transistor and an equivalent standard MOSFET of same effective oxide thickness (EOT). We also find that with continued cycling, traps get generated more toward the bulk of the stack away from the Si/SiO 2 interface. We show that: (1) the first switch effect leads to nearly 50% of the total trap density $\left(\mathrm{N}_{i t}\right)$ near the Si/SiO 2 interface until memory window closure (2) with further bipolar cycling, damage happens both at and away from Si/SiO 2 interface.

关键词： Degradation Charge pumps MOSFET Current measurement Switches Logic gates Frequency measurement FeFETs Charge measurement Thickness measurement

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A disposable tartrazine sensor fabricated with a synchronously activated nanocomposite comprising gadolinium molybdate nanoflowers anchored on functionalized carbon nanofibers

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New Journal of Chemistry 2023年第6期48卷 2660-2672页

作者： Jayapaul, Abishek Sakthivel, Rajalakshmi Lin, Yu-Chien Dhawan, Udesh Liu, Xinke Wen, Hsiao-Wei Chung, Ren-Jei No. 1 Section 3 Zhongxiao E. Rd. Taipei10608 Taiwan Centre for the Cellular Microenvironment Division of Biomedical Engineering James Watt School of Engineering Mazumdar-Shaw Advanced Research Centre University of Glasgow GlasgowG116EW United Kingdom College of Materials Science and Engineering Chinese Engineering and Research Institute of Microelectronics Shenzhen University Shenzhen518060 China Department of Electrical and Computer Engineering National University of Singapore Singapore117583 Singapore Department of Food Science and Biotechnology National Chung Hsing University Taichung402202 Taiwan Food and Animal Product Safety Inspection Center National Chung Hsing University Taichung402202 Taiwan Taipei10608 Taiwan

Tartrazine (TRZ) is a synthetic food dye considered noxious to human health and a toxic environmental contaminant owing to the presence of a harmful azo group (-N 00000000 00000000 00000000 00000000 11111111 00000000 11111111 00000000 00000000 00000000 N-) in its chemical structure. The global necessity to prevent food contamination has led scientific researchers to develop disposable sensing platforms. This study aims to integrate nanotechnology with electrochemistry to fabricate a disposable screen-printed carbon electrode (SPCE) with a nanocomposite composed of gadolinium molybdate (Gd2MoO6) nanoflowers decorated on an enmeshed matrix of acid-functionalized carbon nanofibers (f-CNF). The hierarchal arrangement of distinct components in the nanocomposite is promoted by synergism through the formation of a hybrid heterojunction. This heterojunction in the electrode modifier activates the electrode to sense TRZ with a remarkable limit of detection (0.8 nmol L−1) and quantification (2 nmol L−1) over a broad linear range of 0.025 μM to 216.45 μM. Furthermore, the functional sensing ability of the proposed sensor was analyzed in various commercial food products. © 2024 The Royal Society of Chemistry.

关键词： Nanocomposites

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Switchable mode-locking regimes in a Tm-doped fiber laser with fixed anomalous dispersion

Switchable mode-locking regimes in a Tm-doped fiber laser wi...

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CLEO: science and Innovations, S and I 2022

作者： Xu, Shutao Zeng, Junjie Sander, Michelle Y. Department of Electrical and Computer Engineering BU Photonics Center Boston University BostonMA02215 United States Division of Materials Science and Engineering Boston University BrooklineMA02446 United States Department of Biomedical Engineering Boston University BostonMA02215 United States

We report a thulium-doped all-fiber mode-locked laser that can be switched between stable conventional and dissipative soliton regimes. Periodic soliton explosions with oscillatory recovery dynamics are observed in th... 详细信息

ISBN: (纸本)9781557528209

关键词： Solitons

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Atomic-resolution structural and spectroscopic evidence for the synthetic realization of two-dimensional copper boride

arXiv

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arXiv 2025年

作者： Li, Hui Ruan, Qiyuan Lamarca, Cataldo Tsui, Albert Yakobson, Boris I. Hersam, Mark C. Department of Materials Science and Engineering Northwestern University EvanstonIL60208 United States Department of Materials Science and NanoEngineering Rice University HoustonTX77005 United States Department of Chemistry Northwestern University EvanstonIL60208 United States Department of Electrical and Computer Engineering Northwestern University EvanstonIL60208 United States

Since the first realization of borophene on Ag(111), two-dimensional (2D) boron nanomaterials have attracted significant interest due to their polymorphic diversity and potential for hosting solid-state quantum phenomena. Here, we use atomic-resolution scanning tunneling microscopy (STM) and field-emission resonance (FER) spectroscopy to elucidate the structure and properties of atomically thin boron phases grown on Cu(111). Specifically, FER spectroscopy reveals unique charge transfer and electronic states compared to the distinct borophene phases observed on silver, suggesting that the deposition of boron on copper can result in strong covalent bonding characteristic of a 2D copper boride. This conclusion is reinforced by detailed STM characterization of line defects that are consistent with density functional theory (DFT) calculations for atomically thin Cu8B14. This evidence for 2D copper boride is likely to motivate future synthetic efforts aimed at expanding the relatively unexplored family of atomically thin metal boride materials. Copyright © 2025, The Authors. All rights reserved.

关键词： Atoms

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Suppressing the liquid product crossover in electrochemical CO_(2)reduction

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SmartMat 2021年第1期2卷 12-16页

作者： Ning Wang Rui Kai Miao Geonhui Lee Alberto Vomiero David Sinton Alexander H.Ip Hongyan Liang Edward H.Sargent School of Materials Science and Engineering Tianjin UniversityTianjinChina Department of Electrical and Computer Engineering University of TorontoTorontoOntarioCanada Department of Mechanical and Industrial Engineering University of TorontoTorontoOntarioCanada Department of Engineering Sciences and Mathematics Division of Materials ScienceLuleåUniversity of TechnologyLuleåSweden Department of Molecular Sciences and Nanosystems Ca’Foscari University of VeniceVeniceItaly

Coupling electrochemical CO_(2)reduction(CO_(2)R)with a renewable energy source to create high‐value fuels and chemicals is a promising strategy in moving toward a sustainable global energy ***_(2)R liquid products,such as formate,acetate,ethanol,and propanol,offer high volumetric energy density and are more easily stored and transported than their gaseous ***,a significant amount(~30%)of liquid products from electrochemical CO_(2)R in a flow cell reactor cross the ion exchange membrane,leading to the substantial loss of system‐level Faradaic *** severe crossover of the liquid product has—until now—received limited ***,we review promising methods to suppress liquid product crossover,including the use of bipolar membranes,solid‐state electrolytes,and cation‐exchange membranes‐based acidic CO_(2)R *** then outline the re-maining challenges and future prospects for the production of concentrated liquid products from CO_(2).

关键词： bipolar membranes CO_(2)reduction liquid product crossover solid‐state electrolytes

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Ferromagnetism triggered by band tripling in ruthenate Sr4Ru3O10

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Physical Review B 2024年第15期110卷 155134页

作者： N. Watanabe S. Souma K. Nakayama K. Yamauchi J. F. Ribeiro Y. Wang Miho Kitamura Koji Horiba Hiroshi Kumigashira T. Oguchi Z. Q. Mao Y. P. Chen T. Sato Department of Physics Graduate School of Science Advanced Institute for Materials Research (WPI-AIMR) Center for Science and Innovation in Spintronics (CSIS) Precursory Research for Embryonic Science and Technology (PRESTO) Center for Spintronics Research Network (CSRN) School of Electrical and Computer Engineering and Birck Nanotechnology Center Department of Physics Institute of Materials Structure Science (QST) Sendai 980-8579 Japan Institute of Multidisciplinary Research for Advanced Materials (IMRAM) Department of Physics and Astronomy and Purdue Quantum Science and Engineering Institute International Center for Synchrotron Radiation Innovation Smart (SRIS) Mathematical Science Center for Co-creative Society (MathCCS)

Itinerant ferromagnetism is understood in terms of a quasiparticle picture with renormalized many-body effects. While the ferromagnetic ground state is destabilized by thermal and quantum fluctuations leading to exotic states such as unconventional superconductivity, how the quasiparticles evolve across the ferromagnetic transition is a target of intensive debate. Here, we present a type of ferromagnetic transition that is accompanied by a drastic reconstruction of quasiparticle spectrum in a layered ferromagnetic ruthenate, Sr4Ru3O10. Angle-resolved photoemission spectroscopy uncovered that the three-dimensional coherent states below the ferromagnetic transition temperature (TC) turn into two-dimensional incoherent electronic states slightly above TC characterized by the disappearance of trilayer band splitting, ferromagnetic exchange splitting, and long-lived quasiparticles. Our findings suggest that the electronic coherence strongly modifies the fermiology and magnetic order, pointing to an intriguing coupling between quasiparticles and magnetic properties.

关键词： Electronic structure Fermi surface Ferromagnetism Quasiparticles & collective excitations van Hove singularity Ruddlesden-Popper compounds Angle-resolved photoemission spectroscopy Density functional theory First-principles calculations

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Real-Time Explosion Dynamics in a Thulium-doped Linear Fiber Laser

Real-Time Explosion Dynamics in a Thulium-doped Linear Fiber...

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CLEO: science and Innovations, S and I 2022

作者： Zeng, Junjie Sander, Michelle Y. Department of Electrical and Computer Engineering BU Photonics Center Boston University BostonMA02215 United States Division of Materials Science and Engineering Boston University BrooklineMA02446 United States Department of Biomedical Engineering Boston University BostonMA02215 United States

Real-time explosion dynamics in a transition chaotic state and a dual-wavelength vector soliton state in a thulium-doped linear fiber laser are analyzed with real-time pulse measurements. © Optica Publishing Grou... 详细信息

ISBN: (纸本)9781557528209

关键词： Thulium

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Material approaches to thermal management in advanced fiber lasers and amplifiers 5

Material approaches to thermal management in advanced fiber ...

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Photonic Heat Engines: science and Applications V 2023

作者： Ballato, J. Hawkins, T.W. Dragic, P.D. Engholm, M. Digonnet, M.J.F. Dong, L. Department of Materials Science and Engineering Clemson University ClemsonSC29634 United States Department of Electrical and Computer Engineering University of Illinois at Urbana-Champaign UrbanaIL61801 United States Mid Sweden University SundsvallSE-851 70 Sweden Edward L. Ginzton Laboratory Stanford University StanfordCA94305 United States

ISBN: (纸本)9781510659797

For as long as light and matter have partnered, impurities have played a role in optical system performance. This remains generally true for photonic heat engines and especially the case for optical refrigeration. Building on the history of light and glass, including the materials development of low loss telecom fibers, this paper briefly discusses the sources of heat generation in materials and all-material means for their reduction. Particularly attention will be paid to active optical fibers and connect thermal management to parasitic optical nonlinearities, both critical to high and low power amplifier and laser systems. © 2023 SPIE.

关键词： Temperature control

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Uncovering In-Plane Domain Structures in Two-Dimensional Ferroelectric SnSe Using Machine-Learning Assisted 4D-STEM

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Microscopy and Microanalysis 2022年第S1期28卷 374-375页

作者： Shi, Chuqiao Mao, Nannan Kong, Jing Han, Yimo Department of Materials Science and NanoEngineering Rice University Houston TX Department of Electrical Engineering and Computer Science Massachusetts Institute of Technology Cambridge MA

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