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Neuromodulation of the peripheral nervous system:Bioelectronic technology and prospective developments

BMEMat(BioMedical engineering materials) 2024年第1期2卷 88-114页

作者： Hayoung Song Moohyun Kim Enji Kim Jakyoung Lee Inhea Jeong Kyeonghee Lim Seoung Young Ryu Myoungjae Oh Younhee Kim Jang-Ung Park Department of Materials Science and Engineering Yonsei UniversitySeoulSouth Korea Center for Nanomedicine Institute for Basic Science(IBS)SeoulSouth Korea Department of Neurosurgery Yonsei University College of MedicineSeoulSouth Korea Graduate Program of Nano Biomedical Engineering(NanoBME) Advanced Science InstituteYonsei UniversitySeoulSouth Korea

The peripheral nervous system(PNS)is a fascinatingly complex and crucial component of the human body,responsible for transmitting vital signals throughout the body's intricate network of *** efficient functioning is paramount to our health,with any dysfunction often resulting in serious medical conditions,including motor disorders,neurological diseases,and psychiatric *** strides in science and technology have made neuromodulation of the PNS a promising avenue for addressing these health *** involves modifying nerve activity using a range of techniques,such as electrical,chemical,optical,and mechanical *** plays a critical role in this effort,allowing for precise,controlled,and sustained stimulation of the *** paper provides an overview of the PNS,discusses the current state of neuromodulation devices,and presents emerging trends in the field,including advances in wireless power transfer and materials,that are shaping the future of neuromodulation.

关键词： bioelectronics neuromodulation peripheral nervous system

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Effect of Yttrium Treatment on Germanium-Oxide-Based Interfacial Layer of Ge P-Channel Metal–Oxide–Semiconductor Field-Effect Transistor Fabricated Through In Situ Plasma-Enhanced Atomic Layer Deposition

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IEEE Transactions on Electron Devices 2024年第3期71卷 1-6页

作者： Li, Hui-Hsuan Lin, Kuan-Yu Tsai, Yi-He Lin, Yu-Hsien Chien, Chao-Hsin Institute of Electronics National Yang Ming Chiao Tung University Hsinchu Taiwan Graduate Program for Nanotechnology Department of Materials Science and Engineering National Yang Ming Chiao Tung University Hsinchu Taiwan Department of Electronic Engineering National United University Miaoli Taiwan

This study investigated the effect of yttrium (Y) treatment on a germanium (Ge)-oxide-based interfacial layer (IL) through in situ plasma-enhanced atomic layer deposition (PEALD). Time-of-flight secondary-ion mass spectrometry revealed that the surface reaction and deposition could be successfully performed with a Y precursor, and X-ray photoelectron spectroscopy (XPS) revealed that Y treatment on an IL can suppress GeO

$_{\text{x}}$

volatilization. A metal–oxide–semiconductor capacitor gate-stack with a Y-GeO

$_{\text{x}}$

IL has a low leakage current density (2.1

$\times$

$^{-\text{5}}$

A/cm

$^{\text{2}}$

) and a low interface trap density (approximately 5.5

$\times$

$^{\text{11}}$

$^{-\text{1}}$

$^{-\text{2}}$

) under optimized temperatures. Moreover, the Ge P-channel metal–oxide–semiconductor field-effect transistor (P-MOSFET) containing a gate-stack with a Y-treated Ge-oxide-based IL exhibited a high I

$_{\biosc{on}}$

$_{\biosc{off}}$

ratio and low OFF-state current. Therefore, applying the proposed Y treatment on the IL of a Ge P-MOSFET can help achieve a subnanometer equivalent oxide thickness (EOT) and an

关键词： Ge-oxide-based germanium germanium oxide (GeOx) in situ interfacial layer (IL) plasma-enhanced atomic layer deposition (PEALD) Y-GeOx yttrium

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Effect of electrolyte anions on the cycle life of a polymer electrode in aqueous batteries

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escience 2022年第1期2卷 110-115页

作者： Ye Zhang Lihong Zhao Yanliang Liang Xiaojun Wang Yan Yao Department of Electrical and Computer Engineering Materials Science and Engineering ProgramUniversity of HoustonHoustonTX77204USA Texas Center for Superconductivity at the University of Houston HoustonTX77204USA

Redox polymers are a class of high-capacity, low-cost electrode materials for electrochemical energy storage, butthe mechanisms governing their cycling stability are not well understood. Here we investigate the effect of anionson the longevity of a p-dopable polymer through comparing two aqueous zinc-based electrolytes. Galvanostaticcycling studies reveal the polymer has better capacity retention in the presence of triflate anions than that withsulfate anions. Based on electrode microstructural analysis and evolution profiles of the cell stacking pressure, theorigin of capacity decay is ascribed to mechanical fractures induced by volume change of the polymer activematerials during repeated cycling. The volume change of the polymer with the triflate anion is 61% less than thatwith the sulfate anion, resulting in fewer cracks in the electrodes. The difference is related to the different anionsolvation structures—the triflate anion has fewer solvated water molecules compared with the sulfate anion,leading to smaller volume expansion. This work highlights that anions with low solvation degree are preferablefor long-term cycling.

关键词： Aqueous batteries Polymer electrode Anions Volume chang

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Core/shell magnetite/copolymer composite nanoparticles enabling highly stable magnetorheological response

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International Journal of Mechanical System Dynamics 2022年第2期2卷 155-164页

作者： Wenjiao Han Shun Wang Xiaoting Rui Yuzhen Dong Hyoungjin Choi School of Energy and Power Engineering Nanjing University of Science and TechnologyNanjingChina School of Materials Science and Engineering Harbin Institute of Technology at WeihaiWeihaiChina Department of Polymer Science and Engineering Inha UniversityIncheonRepublic of Korea Program of Environmental and Polymer Engineering College of EngineeringInha UniversityIncheonRepublic of Korea

Magnetorheological fluids(MRFs)have been successfully used in a variety of smart control systems,but are still limited due to their relatively poor settling ***,a core/shell‐structured Fe_(3)O_(4)/copolymer composite nanoparticle is synthesized as a new candidate material for stimulus‐responsive MRFs to tackle the limitation of the long‐term dispersion ***‐co‐diphenylamine copolymers(PANI‐co‐PDPA)are loaded onto the surface of Fe_(3)O_(4) nanoparticles,providing a lighter density and sufficient active interface for the dispersion of magnetic particles in the carrier *** features of the Fe_(3)O_(4)/copolymer composite nanoparticles,including morphology,compositional,and crystalline properties,are *** MRF is prepared by suspending Fe_(3)O_(4)/copolymer composite nanoparticles in a nonmagnetic medium oil,and its rheological properties are assessed using a controlled shear rate test and dynamic oscillation tests using a rotational *** models including the Bingham model and the Herschel–Bulkley model are fitted to the flow curves of the *** obtained Fe_(3)O_(4)/copolymer composite shows soft‐magnetic properties,as well as greater density adaptability and higher stability,compared to Fe_(3)O_(4).Moreover,the sedimentation testing provides information about the dispersion stability characteristics of MRF and shows a good correlation with high‐stability magnetorheological(MR)*** Fe_(3)O_(4)/copolymer‐based MRF with a tunable and instantaneous MR response is considered a promising material for smart control applications.

关键词： magnetorheological fluids core/shell dispersion stability copolymer magnetite

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Automated classification of big X-ray diffraction data using deep learning models

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npj Computational materials 2023年第1期9卷 169-180页

作者： Jerardo E.Salgado Samuel Lerman Zhaotong Du Chenliang Xu Niaz Abdolrahim Materials Science program University of RochesterRochesterNew York 14627USA Department of Computer Science University of RochesterRochesterNew York 14627USA Department of Mechanical Engineering University of RochesterRochesterNew York 14627USA Laboratory for Laser Energetics University of RochesterRochesterNew York 14627USA

In current in situ X-ray diffraction(XRD)techniques,data generation surpasses human analytical capabilities,potentially leading to the loss of *** techniques require human intervention,and lack the performance and adaptability required for material *** the critical need for high-throughput automated XRD pattern analysis,we present a generalized deep learning model to classify a diverse set of materials’crystal systems and space *** our approach,we generate training data with a holistic representation of patterns that emerge from varying experimental conditions and crystal *** also employ an expedited learning technique to refine our model’s expertise to experimental *** addition,we optimize model architecture to elicit classification based on Bragg’s Law and use evaluation data to interpret our model’s *** evaluate our models using experimental data,materials unseen in training,and altered cubic crystals,where we observe state-of-the-art performance and even greater advances in space group classification.

关键词： Automate classify cubic

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Porous Poly(vinylidene fluoride-co-hexafluoropropylene)/copper oxide nanocomposite membranes for piezoelectric strain sensing

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Discover Applied sciences 2025年第5期7卷 1-17页

作者： Al-Ejji, Maryam Promi, Tamanna Sangor, Farah Al-Awa, Zinab Bonthula, Sumalatha Radhika, V. Ponnamma, Deepalekshmi Center for Advanced Materials Qatar University P O Box 2713 Doha Qatar Department of Biological and Environmental Sciences Qatar University P O Box 2713 Doha Qatar Department of Chemical Engineering University of Calicut Kerala Thenhipallam India Materials Science and Technology Program Department of Mathematics Statistics and Physics College of Arts and Sciences Qatar University Doha2713 Qatar

The emerging field of porous piezoelectric strain sensors attracted a wide range of applications in healthcare monitoring, wearable electronics, and other dynamic applications due to their durability, high sensitivity, and real-time monitoring. This study presents the development of porous poly (vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP)/copper oxide (CuO) nanocomposite membranes for piezoelectric strain sensing. The morphology and the dispersion of CuO nanoparticles and nanofibers in PVDF piezoelectric films with different nano-CuO contents are studied by X-ray diffraction, Fourier transform infrared spectrum, scanning electron microscopy and dielectric studies. The PVDF-HFP acts as a scaffold, allowing ions to flow within the porous percolated channels, resulting in a highly robust membrane with desired dielectric properties. The DMA studies enhanced the strain sensing performance of the 3.5 and 7 wt.% CuO nanofibers loaded with PVDF-HFP membranes compared with the 3.5 and 7 wt.% CuO nanoparticles and pristine membranes. The dielectric properties of the composites also showed high storage values for the CuO/PVDF-HFP samples compared to the pristine polymer. Moreover, the surface water contact angles of the membranes have slightly increased after loading the nanomaterial into the PVDF-HFP matrix, which strongly influenced the surface energies, indicating hydrophobicity. The current study, thus, demonstrates the piezoelectric strain sensing devices made from PVDF-HFP/CuO nanofibers for humid atmospheres. © The Author(s) 2025.

关键词： Fourier transform infrared spectroscopy

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Multi-function adsorbent-photocatalyst MXene-TiO_(2) composites for removal of enrofloxacin antibiotic from water

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Journal of Environmental sciences 2023年第2期124卷 414-428页

作者： Siwanat Sukidpaneenid Chamorn Chawengkijwanich Chonlada Pokhum Toshihiro Isobe Pakorn Opaprakasit Paiboon Sreearunothai TAIST-Tokyo Tech Program Sirindhorn International Institute of TechnologyThammasat UniversityPathum Thani 12121Thailand National Nanotechnology Center National Science and Technology Development AgencyPathum Thani 12120Thailand Department of Materials Science and Engineering School of Materials and Chemical TechnologyTokyo Institute of TechnologyTokyo 152-8550Japan School of Bio-Chemical Engineering and Technology Sirindhorn International Institute of TechnologyThammasat UniversityPathum Thani 12121Thailand

MXenes,a new family of two-dimensional transition metal carbides or nitrides,have attracted tremendous attention for various applications due to their unique properties such as good electrical conductivity,hydrophilicity,and ion *** this work,Ti_(3)C_(2) MXene,or MX,is converted to MX-TiO_(2) composites using a simple and rapid microwave hydrothermal treatment in HCl/NaCl mixture solution that induces formation of fine TiO_(2) particles on the MX parent structure and imparts photocatalytic activity to the resulting MX-TiO_(2) *** composites were used for enrofloxacin(ENR),a frequently found contaminating antibiotic,removal from *** relative amount of the MX and TiO_(2) can be controlled by controlling the hydrothermal temperature resulting in composites with tunable adsorption/photocatalytic *** addition was found to play important role as composites synthesized without NaCl could not adsorb enrofloxacin *** NaCl into the hydrothermal treatment causes sodium ions to be simultaneously intercalated into the composite structure,improving ENR adsorption greatly from 1 to 6 mg ENR/g *** also slows down the MX to TiO2 conversion leading to a smaller and more uniform distribution of TiO_(2) particles on the ***-TiO_(2)/NaCl composites,which have sodium intercalated in their structures,showed both higher ENR adsorption and photocatalytic activity than composites without NaCl despite the latter having higher TiO2 *** ENR on the composites can be efficiently degraded by free radicals generated from the photoexcited TiO2 particles,leading to high photocatalytic degradation *** demonstrates the synergetic effect between adsorption and photocatalytic degradation of the synthesized compounds.

关键词： MXene-TiO_(2)composites Ti3C2 Ion-exchange Photocatalytic degradation Enrofloxacin Antibiotics removal

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High-throughput design of perpendicular magnetic anisotropy at quaternary Heusler and MgO interfaces

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npj Computational materials 2023年第1期9卷 1084-1091页

作者： Sicong Jiang Kesong Yang Department of Nano and Chemical Engineering University of California San DiegoLa JollaCA 92093-0448USA Program of Materials Science and Engineering University of California San DiegoLa JollaCA 92093-0418USA Center for Memory and Recording Research University of California San DiegoLa JollaCA 92093-0401USA

Heusler alloys combined with MgO interfaces exhibit interfacial perpendicular magnetic anisotropy, making them attractive forenergy-efficient spintronic technologies. However, finding suitable Heusler/MgO heterostructures with desired properties ischallenging due to the vast range of compositions available and the complexity of interfacial structures, particularly for theemerging quaternary Heusler compounds. In this study, we report a high-throughput screening of quaternary-Heusler/MgOheterostructures for spintronic applications. By analyzing various materials descriptors, including formation energy, convex hulldistance, magnetic ordering, lattice misfit, magnetic anisotropy constant, tunnel magnetoresistance, Curie temperature, and atomicsite disordering, we identified 5 promising compounds out of 27,000 quaternary Heusler compounds. These compounds, namelyIrCrAlTi, IrCrGaTi, IrMnZnTi, OsCrAlTa, and TaGaOsCr, show potential for designing energy-efficient perpendicular magnetic tunneljunctions. This work demonstrates an efficient approach using open quantum materials repositories, effective materials descriptors,and high-throughput computational techniques to accelerate the discovery of quaternary-Heusler-based functional materials.

关键词： quaternary anisotropy magnetic

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Reusable Hydrogen Storage Tank with Flange Design 10

Reusable Hydrogen Storage Tank with Flange Design

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10th International Conference on Applied System Innovation, ICASI 2024

作者： Li, Yun-Qi Chen, Hsuan-Jung Yang, Hsi-Wen Chen, Chih-Yuan Chang, Shao-Fu Chen, Ssu-Ying Chen, Chien-Chon College of Engineering and Science Ph.D. Program in Materials and Chemical Engineering National United University Miaoli Taiwan Michigan State University Department of Chemistry MI48824 United States National United University Department of Materials Engineering Miaoli Taiwan Graduate Institute of Intellectual Property National Taipei University of Technology Taiwan National United University Department of Energy Engineering Miaoli Taiwan

ISBN: (纸本)9798350394924

For how to store and transport hydrogen, the first thought is to store hydrogen directly in the cylinder. However, this method is not desirable, because generally at least 700 atm high pressure, the hydrogen contained in the cylinder to be useful. Therefore it is very unsafe at such high pressures. In This paper, we design and production of a new generation of solid-state hydrogen storage and discharge container. The goal of 'development of solid-state hydrogen storage technology' is to break through the bottlenecks of hydrogen storage technology safety, hydrogen storage density, high-efficiency hydrogen absorption and release, transportation safety, and engineering practice. © 2024 IEEE.

关键词： Aluminum

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Development of High Temperature Lead-free Solders in the Al-95Zn + xSn Systems

Development of High Temperature Lead-free Solders in the Al-...

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22nd International Conference on Electronics Packaging, ICEP 2023

作者： Laksono, Andromeda Dwi Yen, Yee-Wen National Taiwan University of Science and Technology Department of Materials Science and Engineering Taipei10672 Taiwan Institut Teknologi Kalimantan Study Program of Materials and Metallurgical Engineering East Kalimantan Balikpapan76127 Indonesia

ISBN: (纸本)9784991191152

The high-temperature lead-free solder alloys of Al-95Zn with the modification of the addition of Sn have been investigated. Its proportion is used to adjust the metallographic microstructure, solidified precipitate phase, and liquidus temperature of the solder alloy. The characterization results, such as scanning electron microscope (SEM), energy dispersive spectrometer (EDS), X-ray diffraction (XRD), and differential scanning calorimeter (DSC), will be discussed in this study. The study results show that the Al-Sn-Zn-based alloy has (Zn)+β- Sn+(Al) precipitates when heat-treated at 900°C for 36 h. Its liquidus temperature of Al-95Zn + xSn is between 342-385°C, and increased Sn content will decrease its liquidus temperature. © 2023 Japan Institute of Electronics Packaging.

关键词： Zinc alloys

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