检索结果-内蒙古大学图书馆

SSRN 2023年

作者： Han, Dan Chen, Yi Li, Donghui Shi, Jiexu Wang, Hongtao He, Xiuli Zhao, Li Wang, Weidong Sang, Shengbo Ji, Jianlong Shanxi Key Laboratory of Micro Nano Sensors and Artificial Intelligence Perception College of Electronic Information and Optical Engineering Taiyuan University of Technology Taiyuan030024 China Key Lab of Advanced Transducers and Intelligent Control System The Ministry of Education Taiyuan University of Technology Taiyuan030024 China State Key Laboratory of Transducer Technology Aerospace Information Research Institute Chinese Academy of Sciences Beijing100190 China Bioengineering Research Center Medical Innovation Research Division Chinese PLA General Hospital Beijing China Shanxi Research Institute of 6D Artificial Intelligence Biomedical Science China

Surface modification with noble metal is considered as an effective strategy to enhance sensing performance of semiconductor gas sensors. In this work, gold nanoparticles (Au NPs) decorated Gallium Nitride nanoflowers (Au-GaN NFs) have been synthesized successfully by a feasible hydrothermal method combined with high temperature nitridation and followed by in-situ reduction process. The characterizations of the structure and morphology of as-obtained Au-GaN NFs indicated that the Au NPs were successfully loaded on the surface of GaN. The excellent gas sensing performance was observed for GaN of 2 mol% Au loaded, including the high response (86.8%) to 100 ppm NH3 with fast response/recovery time (41 s/169 s) at room temperature, low theoretical limit of detection (72 ppb), good stability and selectivity. Besides, the influence of humidity on the performance of sensors was explored, where the response can be reached 56.5% towards 100 ppm NH3 under 70% RH. The improvement of the sensing performance of Au-GaN NFs sensor can be attributed to the combined action of chemical and electronic sensitization of Au NPs. This work provides a candidate of Au-GaN NFs for the development of wireless sensing system in NH3 monitoring. © 2023, The Authors. All rights reserved.

关键词： Nanoflowers

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Cyclopentylmethyl Ether, a Non-Fluorinated, Weakly Solvating and Wide Temperature Solvent for High-Performance Lithium Metal Battery

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Angewandte Chemie 2023年第21期135卷

作者： Han Zhang Dr. Ziqi Zeng Fenfen Ma Qiang Wu Xinlan Wang Prof. Shijie Cheng Prof. Jia Xie State Key Laboratory of Advanced Electromagnetic Engineering and Technology School of Electrical and Electronic Engineering Huazhong University of Science and Technology Wuhan 430074 Hubei China State Key Laboratory of Materials Processing and Die & Mould Technology School of Materials Science and Engineering Huazhong University of Science and Technology Wuhan 430074 Hubei China GuSu Laboratory of Materials Suzhou 215123 Jiangsu China

While recent work demonstrates the advantages of weakly solvating solvents in enhancing the cyclability of LMBs, both new designs and design strategies for high performance weakly solvating solvent, especially physicochemical properties, are still lacking. Here, we propose a molecular design to tune the solvating power and physicochemical properties of non-fluorinated ether solvent. The resulting cyclopentylmethyl ether (CPME) have a weak solvating power and wide liquid-phase temperature range. By optimizing the salt concentration, the CE is further promoted to 99.4 %. Besides, the improved electrochemical performance of Li−S battery in CPME-based electrolytes is obtained at −20 °C. The Li||LFP (17.6 mg cm −2 ) battery with developed electrolyte maintains >90 % of the original capacity over 400 cycles. Our design concept for solvent molecule provides a promising pathway to non-fluorinated electrolytes with weakly solvating power and wide temperature window for high-energy-density LMBs.

关键词： Cyclopentylmethyl Ether Molecular Design Non-Fluorinated Solvent Weakly Solvating Power Wide Temperature Range

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Tailoring the Anomalous Hall Effect in Van Der Waals Ferromagnet Fe3gete2

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SSRN 2024年

作者： Wu, Kaile Wang, Qin Wang, Junshan Jiang, Jiaolin Zhao, Tian Zhao, Dong Han, Dan Quan, Zhiyong Ma, Zongmin Wang, Haomin Sang, Shengbo Ge, Yang Shanxi Key Laboratory of Micro Nano Sensors & Artificial Intelligence Perception College of Electronic Information and Optical Engineering Taiyuan University of Technology Taiyuan030024 China Key Lab of Advanced Transducers and Intelligent Control System The Ministry of Education Taiyuan University of Technology Taiyuan030024 China College of Materials Science and Engineering Taiyuan University of Technology Taiyuan030024 China Key Laboratory of Magnetic Molecules and Magnetic Information Materials of Ministry of Education School of Chemistry and Materials Science Shanxi Normal University Taiyuan030031 China State Key Laboratory of Dynamic Measurement Technology North University of China Shanxi Taiyuan030051 China School of Semiconductor and Physics North University of China Shanxi Taiyuan030051 China State Key Laboratory of Functional Materials for Informatics Shanghai Institute of Microsystem and Information Technology Chinese Academy of Sciences Shanghai200050 China Shanxi Research Institute of 6D Artificial Intelligence Biomedical Science Taiyuan030024 China

Two-dimensional van der Waals magnetic materials have shown fascinating natural ferromagnetic properties at the atomic level, which has great potential in fields of low power spintronics, quantum computing and optical communication. Herein, the ferromagnetism and magnetic anisotropy of bulk Fe3GeTe2 (FGT) were investigated, and the testing results indicate a pronounced vertical magnetic anisotropy below the Curie temperature (Tc=165 K) of FGT. In addition, the anomalous Hall effect of FGT nanoflakes was studied at various temperatures and thicknesses by standard Hall bar device in detail. The results show the anomalous Hall resistance (0.764 Ω at 20 K decreased to 0.332 Ω at 140 K) and the obvious rectangular magnetic hysteresis rings below Tc (165 K). Furthermore, we calculated the carrier concentration (2.5×1022 cm-3 at 20K) and mobility (13.3 cm2/(v·s) at 20K) under large magnetic field (-6 T~6 T). Particularly, we demonstrated that the strong tailoring ability of the anomalous Hall effect for FGT-based magnetoelectric transport devices comes form the regulation of magnetic moment by sample thickness and magnetic field angle. The above experimental results verify that FGT is expected to be a prime candidate material for ultrathin 2D spintronic devices to the next generation. © 2024, The Authors. All rights reserved.

关键词： Germanium alloys

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Room-temperature waveguide integrated quantum register in a semiconductor photonic platform

arXiv

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arXiv 2023年

作者： Hu, Haibo Zhou, Yu Yi, Ailun Bao, Tongyuan Liu, Chengying Luo, Qi Zhang, Yao Wang, Zi Li, Qiang Lu, Dawei Liu, Zhengtong Xiao, Shumin Ou, Xin Song, Qinghai Ministry of Industry and Information Technology Key Lab of Micro-Nano Optoelectronic Information System Guangdong Provincial Key Laboratory of Semiconductor Optoelectronic Materials and Intelligent Photonic Systems Harbin Institute of Technology Shenzhen518055 China Pengcheng Laboratory Shenzhen518055 China Shenzhen518045 China National Key Laboratory of Materials for Integrated Circuits Shanghai Institute of Microsystem and Information Technology Chinese Academy of Sciences Shanghai200050 China The Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences Beijing100049 China Institute of Advanced Semiconductors Zhejiang Provincial Key Laboratory of Power Semiconductor Materials and Devices ZJU-Hangzhou Global Scientific and Technological Innovation Center Zhejiang Hangzhou311200 China State Key Laboratory of Silicon Materials and Advanced Semiconductors School of Materials Science and Engineering Zhejiang University Hangzhou310027 China Shenzhen Institute for Quantum Science and Engineering Department of Physics Southern University of Science and Technology Shenzhen518055 China Collaborative Innovation Center of Extreme Optics Shanxi University Shanxi Taiyuan030006 China

Quantum photonic integrated circuits are reshaping quantum networks and sensing by providing compact, efficient platforms for practical quantum applications. Despite continuous breakthroughs, integrating entangled registers into photonic devices on a CMOS-compatible platform presents significant challenges. Herein, we present single electron-nuclear spin entanglement and its integration into a silicon-carbide-on-insulator (SiCOI) waveguide. We demonstrate the successful generation of single divacancy electron spins and near-unity spin initialization of single 13C nuclear spins. Both single nuclear and electron spin can be coherently controlled and a maximally entangled state with a fidelity of 0.89 has been prepared under ambient conditions. Based on the nanoscale positioning techniques, the entangled quantum register has been further integrated into SiC photonic waveguides for the first time. We find that the intrinsic optical and spin characteristics of the register are well preserved and the fidelity of the entangled state remains as high as 0.88. Our findings highlight the promising prospects of the SiCOI platform as a compelling candidate for future scalable quantum photonic applications. Copyright © 2023, The Authors. All rights reserved.

关键词： Silicon on insulator technology

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EMOR: Energy-Efficient Mixture Opportunistic Routing Based on Reinforcement Learning for Lunar Surface Ad-hoc Networks

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IEEE Transactions on Communications 2024年

作者： Wang, Yijie Qu, Zhiyuan Zhao, Zhongliang Cao, Xianbin Liu, Yang Quek, Tony Q. S. Beihang University School Of Electronic And Information Engineering China State Key Laboratory Of CNS/ATM Beijing100191 China Beihang University Shen Yuan Honors College Beijing100191 China Peng Cheng Laboratory Department Of Strategic And Advanced Interdisciplinary Research Guangdong Shenzhen518055 China Nanyang Technological University Singapore Singapore University Of Technology And Design 487372 Singapore Yonsei University Yonsei Frontier Lab Korea Republic of

The lunar surface ad-hoc network is a critical component of the international lunar research station and an extension of the earth-moon communication networks. Its high reliability and low delay are essential for ensuring the safety of the lunar station and improving the efficiency of node collaboration. However, due to the lack of large-scale grid infrastructures, the network must operate autonomously for long periods under strong energy constraints. We propose EMOR, a cross-layer routing protocol, which aims to achieve sustainable high reliability and low latency while balancing energy recovery and consumption. EMOR improves reliability through the 'parallel' forwarding feature of opportunistic routing and reduces delay through a mixture of table-based and timer-based routing mechanisms. Moreover, EMOR uses reinforcement learning to analyze the environment and calculate the weights of energy and progress to guide the emphasis on multi-metrics routing. To balance energy consumption and recovery, EMOR introduces a dynamic duty cycle in the MAC layer. Compared to table-based routing and the latest opportunistic routing, EMOR maintains the optimal end-to-end delay in the order of 1ms while improving the packet delivery ratio 6% to 21% higher than other protocols. Moreover, the network lifetime using EMOR is extended by 75.5% to 242%. © 1972-2012 IEEE.

关键词： Ad hoc networks

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Active Sites Regulation and Adsorption Performance of Al-Pillared Bentonite for the Removal of Lead from Aqueous Phase

SSRN

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SSRN 2024年

作者： Zhang, Qi Ye, Changwen Zhou, Hao Chen, Yuting Ao, Fang Luo, Yi Yang, Weiqing Ma, Menglin Chen, Xianfei State Key Laboratory of Geohazard Prevention and Geoenvironment Protection Chengdu University of Technology Chengdu610059 China China West Construction Academy of Building Materials Co. Ltd. Chengdu610015 China PetroChina Lanzhou Lubricating Oil R&D Institute Lanzhou730060 China Key Lab of Advanced Scientific Computation of Sichuan Province Faculty of Science Xihua University Chengdu610039 China College of Materials and Chemistry and Chemical Engineering Chengdu University of Technology Chengdu610059 China

Active clay and pillared acid-activated clay were prepared by acidification and pillar-supported technology using natural bentonite as the carrier. The samples were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), NH3-temperature programmed desorption (TPD), Brunauer-Emmett-Teller (BET), and Fourier transform infrared (FTIR). The results showed that the samples obtained the structure of multiple acid sites. The optimum conditions for adsorption of lead ions by various factors were studied and discussed: bentonite mass (0.2g), initial concentration (100mg/L), agitation time (120min), and pH (6.0). Adsorption data were fitted by adsorption kinetics and adsorption isotherm model. Based on the response surface method (RSM), Pb2+ concentration, agitation time, and bentonite mass were studied as functions of independent factors. Analysis of variance (ANOVA) showed that the influence of these variables was significant. The effects of acid functional groups and ligands produced by lead on adsorption were analyzed by simulating the ionic morphology of lead. By using DFT calculation, a bentonite cycle model was established to calculate the surface binding energy, density of states, and band structure of adsorbent molecules and bentonite, and to explore the mechanism of heavy metal adsorption by clay minerals. © 2024, The Authors. All rights reserved.

关键词： Bentonite

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Fabrication of Capillary Fibre with Ultra-Thin Wall for Optofluidic Laser Application

Fabrication of Capillary Fibre with Ultra-Thin Wall for Opto...

引用

Asia Communications and Photonics Conference and Exhibition (ACP)

作者： Yanhua Luo Xi Yang Yuan Gong Binbin Yan Jianxiang Wen Jianzhong Zhang Yunjiang Rao Gang-Ding Peng Photonics & Optical Communications School of Electrical Engineering & Telecommunications UNSW Sydney NSW Australia Key Laboratory of Optical Fiber Sensing and Communications Ministry of Education University of Electronic Science and Technology of China Chengdu China State Key Laboratory of Information Photonics and Optical Communications Beijing University of Posts and Telecommunications Beijing China Key laboratory of Specialty Fiber Optics and Optical Access Networks Joint International Research Laboratory of Specialty Fiber Optics and Advanced Communication Shanghai University Shanghai China Key Lab of In-fiber Integrated Optics Ministry of Education Harbin Engineering University Harbin China

Capillary fibre (CF) with ultra-thin wall has great potential for high-throughput biochemical sensing based on the optofluidic laser (OFL). For the CF fabrication, the optimized drawing condition has been investigated.

ISBN: (纸本)9781943580705

关键词： Fiber fabrication Fiber lasers Hollow core fibers Optical fibers Photonic crystal fibers Whispering gallery modes

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Erratum: Effects of alpha particles on the transport of helium ash driven by collisionless trapped electron mode turbulence (2022 Nucl. Fusion 62 126011)

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Nuclear Fusion 2022年第12期62卷 129601-129601页

作者： Guangting Zhu Lu Wang Weixin Guo M.S. Hussain Mingzhu Zhang International Joint Research Laboratory of Magnetic Confinement Fusion and Plasma Physics State Key Laboratory of Advanced Electromagnetic Engineering and Technology School of Electric and Electronic Engineering Huazhong University of Science and Technology Wuhan 430074 China International Joint Research Laboratory of Magnetic Confinement Fusion and Plasma Physics State Key Laboratory of Advanced Electromagnetic Engineering and Technology School of Electrical and Electronic Engineering and School of Physics Huazhong University of Science and Technology Wuhan 430074 China School of Nuclear Science and Technology University of Science and Technology of China Hefei 230026 China Xiantao Middle School of Hubei Province Xiantao 433000 China

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A Constructive Procedure based on Dynamic Scaling for Adaptive Control of Nonlinearly Parameterized Nonlinear Systems

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IFAC Proceedings Volumes 2011年第1期44卷 120-125页

作者： Xiangbin Liu Romeo Ortega Hongye Su Jian Chu Advanced Control Systems Laboratory of School of Electronics and Information Engineering Beijing Jiaotong University Beijing 100044 P. R. China. (Tel: 86-10-5168-4105) Laboratoire des Signaux et Systèmes CNRS–SUPELEC 91192 Gif–sur–Yvette France State Key Lab. of Industrial Control Technology Institute of Cyber-Systems and Control Zhejiang University Hangzhou 310027 P. R. China

Abstract A new framework to design immersion and invariance adaptive controllers for nonlinearly parameterized, nonlinear systems was recently proposed by the authors. The key step is the construction of a monotone mapping, via a suitable selection of a controller tuning function, which has to satisfy some integrability conditions—this translates into the need to solve a partial differential equation (PDE). In this paper this result is extended providing some answers to the questions of characterization of “monotonizable” systems and solvability of the PDE. First, adding to the design a nonlinear dynamic scaling, we obviate the need to solve the PDE. Second, for the case of factorizable nonlinearities , the following results are established. (i) It is shown that the monotonicity condition is satisfied if a linear matrix inequality is feasible. (ii) Directly verifiable involutivity conditions that ensure the solution of the PDE are presented. (iii) An explicit formula for the required tuning function is given, provided the regressor matrix satisfies some rank conditions. Hence, adding a dynamic scaling, this yields a constructive solution to the problem.

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Enhanced Simulation Study of ITER Core X-Ray Crystal Spectroscopy

Enhanced Simulation Study of ITER Core X-Ray Crystal Spectro...

引用

IEEE International Conference on Plasma Science (ICOPS)

作者： X. Jin Z. Cheng J. Zhang W. Yan Z. Chen N. Pablant L. Gao D. Lu M. O’Mullane R. Tieulent R. Barnsley State Key Laboratory of Advanced Electromagnetic Technology International Joint Research Laboratory of Magnetic Confinement Fusion and Plasma Physics School of Electrical and Electronic Engineering Huazhong University of Science and Technology Wuhan China ITER Organization Route de Vinon-sur-Verdon CS 90 046 St. Paul Lez Durance Cedex France Princeton Plasma Physics Laboratory Princeton New Jersey United States of America HFIPS Chinese Academy of Science Institute of Plasma Physics Hefei China Department of Physics SUPA University of Strathclyde Glasgow United Kingdom

ISBN: (数字)9798350360912

ISBN: (纸本)9798350360929

The core X-Ray Crystal Spectroscopy (XRCS-Core) is a critical diagnostic tool dedicated to providing ion temperature and plasma rotation for the International Tokamak Experimental Reactor (ITER). To meet space constraints, a novel dual-reflection configuration involving multiple flat reflectors and spherical curved crystals has been proposed for ITER XRCS-Core [1].

关键词： Spectroscopy Crystals Ions Tokamak devices Plasmas Plasma temperature Inductors

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