检索结果-内蒙古大学图书馆

arXiv 2023年

作者： Ding, Jianyang Zhao, Ningning Tao, Zicheng Huang, Zhe Jiang, Zhicheng Yang, Yichen Cho, Soohyun Liu, Zhengtai Liu, Jishan Guo, Yanfeng Liu, Kai Liu, Zhonghao Shen, Dawei National Key Laboratory of Materials for Integrated Circuits Shanghai Institute of Microsystem and Information Technology Chinese Academy of Sciences Shanghai200050 China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences Beijing100049 China Department of Physics Beijing Key Laboratory of Opto-Electronic Functional Materials & Micro-Nano Devices Renmin University of China Beijing100872 China School of Physical Science and Technology ShanghaiTech University Shanghai201210 China

RV6Sn6 (R = Y and lanthanides) with two-dimensional vanadium-kagome surface states is an ideal platform to investigate kagome physics and manipulate the kagome features to realize novel phenomena. Utilizing the micron-scale spatially resolved angle-resolved photoemission spectroscopy and first-principles calculations, we report a systematical study of the electronic structures of RV6Sn6 (R = Gd, Tb, and Lu) on the two cleaved surfaces, i.e., the V- and RSn1-terminated (001) surfaces. The calculated bands without any renormalization match well with the main ARPES dispersive features, indicating the weak electronic correlation in this system. We observe’W’-like kagome surface states around the Brillouin zone corners showing R-element-dependent intensities, which is probably due to various coupling strengths between V and RSn1 layers. Our finding suggests an avenue for tuning electronic states by interlayer coupling based on two-dimensional kagome lattices. Copyright © 2023, The Authors. All rights reserved.

关键词： Surface states

来源：评论

学校读者我要写书评

暂无评论

Photonic synapses with ultralow energy consumption for artificial visual perception and brain storage

引用

Opto-Electronic Advances 2022年第9期5卷 1-13页

作者： Caihong Li Wen Du Yixuan Huang Jihua Zou Lingzhi Luo Song Sun Alexander OGovorov Jiang Wu Hongxing Xu Zhiming Wang Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of ChinaChengdu 610054China Microsystem and Terahertz Research Center China Academy of Engineering PhysicsChengdu 610200China Institute of Electronic Engineering China Academy of Engineering PhysicsMianyang 621999China Department of Physics and Astronomy Ohio UniversityAthensOhio 45701United States State Key Laboratory of Electronic Thin Films and Integrated Devices University of Electronic Science and Technology of ChinaChengdu 610065China School of Physics and Technology Wuhan UniversityWuhan 430072China

The human visual system,dependent on retinal cells,can be regarded as a complex combination of optical system and nervous *** retinal system could mimic the sensing and processing function of human *** stimulated synaptic devices could serve as the building blocks for artificial retinas and subsequent information transmission system to ***,photonic synaptic transistors based on polycrystalline MoS_(2),which could simulate human visual perception and brain storage,are ***,the photodetection range from visible light to near-infrared light of MoS_(2) multilayer could extend human eyes’vision limitation to near-infrared ***,the photonic synaptic transistor shows an ultrafast speed within 5μs and ultralow power consumption under optical stimuli about 40 aJ,several orders of magnitude lower than biological synapses(50 ms and 10 fJ).Furthermore,the backgate control could act as emotional modulation of the artificial brain to enhance or suppress memory function,*** intensity of *** proposed carrier trapping/detrapping as the main working mechanism is presented for the *** addition,synaptic functionalities including short synaptic plasticity,long synaptic plasticity and paired-pulse facilitation could be successfully simulated based on the prepared ***,the large difference between short synaptic plasticity and long synaptic plasticity reveals the better image pre-processing function of the prepared photonic *** classical Pavlovian conditioning associated with the associative learning is successfully implemented as ***,the efficient and rich functionalities demonstrate the potential of the MoS_(2) synaptic device that integrates sensing-memory-preprocessing capabilities for realizing artificial neural networks with different emotions that mimic human retina and brain.

关键词： MoS_(2)synaptic transistors visual perception ultralow power consumption memory

来源：评论

学校读者我要写书评

暂无评论

Superconducting nanowire diode

arXiv

引用

arXiv 2023年

作者： Zhang, Xiaofu Huan, Qingchang Ma, Ruoyan Zhang, Xingyu Huang, Jia Liu, Xiaoyu Peng, Wei Li, Hao Wang, Zhen Xie, Xiaoming You, Lixing National Key Laboratory of Materials for Integrated Circuits Shanghai Institute of Microsystem and Information Technology Chinese Academy of Sciences 865 Changning Road Shanghai200050 China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences Beijing100049 China School of Microelectronics Shanghai University 20 Chengzhong Road Shanghai201800 China

Semiconducting diode with nonreciprocal transport effect underlies the cornerstone of contemporary integrated circuits (ICs) technology. Due to isotropic superconducting properties and the lack of breaking of inversion symmetry for conventional s-wave superconductors, such a superconducting peer is absent. Recently, a series of superconducting structures, including superconducting superlattice and quantum-material-based superconducting Josephson junction, have exhibited a superconducting diode effect in terms of polarity-dependent critical current. However, due to complex structures, these composite systems are not able to construct large-scale integrated superconducting circuits. Here, we demonstrated the minimal superconducting electric component-superconducting nanowire-based diode with a nonreciprocal transport effect under a perpendicular magnetic field, in which the superconducting to normal metallic phase transition relies on the polarity and amplitude of the bias current. Our nanowire diodes can be reliably operated nearly at all temperatures below the critical temperature, and the rectification efficiency at 2 K can be more than 24%. Moreover, the superconducting nanowire diode is able to rectify both square wave and sine wave signals without any distortion. Combining the superconducting nanowire-based diodes and transistors, superconducting nanowires hold the possibility to construct novel low-dissipation superconducting ICs. © 2023, CC BY-NC-ND.

关键词： Diodes

来源：评论

学校读者我要写书评

暂无评论

Quantum Light Generation based on GaN Microring towards Fully On-chip Source

arXiv

引用

arXiv 2024年

作者： Zeng, Hong He, Zhao-Qin Fan, Yun-Ru Luo, Yue Lyu, Chen Wu, Jin-Peng Li, Yun-Bo Liu, Sheng Wang, Dong Zhang, De-Chao Zeng, Juan-Juan Deng, Guang-Wei Wang, You Song, Hai-Zhi Wang, Zhen You, Li-Xing Guo, Kai Sun, Chang-Zheng Luo, Yi Guo, Guang-Can Zhou, Qiang Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of China Chengdu611731 China Key Laboratory of Quantum Physics and Photonic Quantum Information Ministry of Education University of Electronic Science and Technology of China Chengdu611731 China Department of Electronic Engineering Tsinghua University Beijing100084 China Department of Fundamental Network Technology China Mobile Research Institute Beijing100053 China Center for Quantum Internet Tianfu Jiangxi Laboratory Chengdu641419 China Southwest Institute of Technical Physics Chengdu610041 China National Key Laboratory of Materials for Integrated Circuits Shanghai Institute of Microsystem and Information Technology Chinese Academy of Sciences Shanghai200050 China Institute of Systems Engineering AMS Beijing100141 China CAS Key Laboratory of Quantum Information University of Science and Technology of China Hefei230026 China

integrated quantum light source is increasingly desirable in large-scale quantum information processing. Despite recent remarkable advances, new material platform is constantly being explored for the fully on-chip integration of quantum light generation, active and passive manipulation, and detection. Here, for the first time, we demonstrate a gallium nitride (GaN) microring based quantum light generation in the telecom C-band, which has potential towards the monolithic integration of quantum light source. In our demonstration, the GaN microring has a free spectral range of 330 GHz and a near-zero anomalous dispersion region of over 100 nm. The generation of energy-time entangled photon pair is demonstrated with a typical raw two-photon interference visibility of 95.5±6.5%, which is further configured to generate heralded single photon with a typical heralded second-order auto-correlation g(2)H (0) of 0.045±0.001. Our results pave the way for developing chip-scale quantum photonic circuit. Copyright © 2024, The Authors. All rights reserved.

关键词： Gallium nitride

来源：评论

学校读者我要写书评

暂无评论

Reconfigurable Meta-Radiator Based on Flexible Mechanically Controlled Current Distribution in Three-dimensional Space

arXiv

引用

arXiv 2023年

作者： Wu, Nan-Shu Xu, Su Ge, Xiao-Liang Liu, Jian-Bin Ren, Hang Xu, Kuiwen Wang, Zuojia Gao, Fei Chen, Qi-Dai Sun, Hong-Bo State Key Laboratory of Integrated Optoelectronics College of Electronic Science and Engineering Jilin University Changchun130012 China Zhejiang Provincial Key Laboratory of Advanced Microelectronic Intelligent Systems and Applications Hangzhou310027 China Engineering Research Center of Smart Microsensors and Microsystems Ministry of Education School of Electronics and Information Hangzhou Dianzi University Hangzhou310018 China Interdisciplinary Center for Quantum Information State Key Laboratory of Modern Optical Instrumentation Zhejiang University Hangzhou310027 China State Key Laboratory of Precision Measurement Technology and Instruments Department of Precision Instrument Tsinghua University Haidian Beijing100084 China

In this paper, we provide an experimental proof-of-concept of this dynamic 3D current manipulation through a 3D-printed reconfigurable meta-radiator with periodically slotted current elements. By utilizing the working frequency and the mechanical configuration comprehensively, the radiation pattern can be switched among 12 states. Inspired by maximum likelihood method in digital communications, a robustness-analysis method is proposed to evaluate the potential error ratio between ideal cases and practice. Our work provides a previously unidentified model for next-generation information distribution and terahertz-infrared wireless communications. © 2023 Optical Society of America © 2023, CC BY.

关键词： Radiators

来源：评论

学校读者我要写书评

暂无评论

Deterministic spin-orbit torque switching including the interplay between spin polarization and kagome plane in Mn3Sn

引用

Physical Review B 2024年第13期109卷 134433-134433页

作者： Zhengde Xu Xue Zhang Yixiao Qiao Gengchiau Liang Shuyuan Shi Zhifeng Zhu School of Information Science and Technology ShanghaiTech University Shanghai 201210 China Shanghai Institute of Microsystem and Information Technology Chinese Academy of Sciences Shanghai 200050 China University of Chinese Academy of Sciences Beijing 100049 China Department of Electrical and Computer Engineering National University of Singapore 117576 Singapore Industry Academia Innovation School National Yang-Ming Chiao Tung University Hsinchu City 300093 Taiwan Fert Beijing Institute MIIT Key Laboratory of Spintronics School of Integrated Circuit Science and Engineering Beihang University Beijing 100191 China Shanghai Engineering Research Center of Energy Efficient and Custom AI IC Shanghai 201210 China

Previous research has demonstrated the spin-orbit torque (SOT) switching of Mn3Sn in configuration I, where the spin polarization σ resides within the kagome plane. However, this configuration has yielded several unexpected outcomes, giving rise to debates concerning the fundamental physics governing the switching process. Alternatively, in configuration II, σ is perpendicular to the kagome plane, which bears greater resemblance to the ferromagnetic system. In this study, we show successful SOT switching of Mn3Sn in configuration II, demonstrating behaviors more akin to ferromagnets, e.g., the critical switching current density (Jcrit) and external field (Hext) are in the order of 1010A/m2 and tens of Oersted, respectively. The switching result is also independent of the initial state. We further show that the distinctive spin structure of Mn3Sn leads to unique switching characteristics, including Jcrit increasing linearly with Hext and the opposite switching polarity to ferromagnetism. A switching phase diagram is further provided as a guideline for experimental demonstrations, offering a clear physical picture for the observed phenomena.

关键词： Antiferromagnetism Spin dynamics Spin-orbit torque Antiferromagnets Chiral magnets Landau-Lifschitz-Gilbert equation

来源：评论

学校读者我要写书评

暂无评论

Observation of optical gyromagnetic properties in magneto-optical metamaterials

Observation of optical gyromagnetic properties in magneto-op...

引用

CLEO: QELS_Fundamental science, QELS 2022

作者： Xia, Shuang Yang, Weihao Ignatyeva, Daria Liu, Qing Wang, Hanbin Qin, Jun Belotelov, Vladimir I. Chen, Yiqin Duan, Huigao Luo, Yi Novák, Ondřej Veis, Martin Deng, Longjiang Bi, Lei National Engineering Research Center of Electromagnetic Radiation Control Materials University of Electronic Science and Technology of China Chengdu610054 China State Key Laboratory of Electronic Thin-Films and Integrated Devices University of Electronic Science and Technology of China Chengdu610054 China Faculty of Physics Lomonossov Moscow State University Leninskie Gory Moscow119991 Russia College of Mechanical and Vehicle Engineering National Engineering Research Center for High Efficiency Grinding Hunan University Changsha410082 China Microsystem and Terahertz Research Center China Academy of Engineering Physics Chengdu610200 China Charles University of Prague Faculty of Mathematics and Physics Ke Karlovu 3 Prague 212116 Czech Republic

ISBN: (纸本)9781557528209

We report the observation of gyromagnetic and bi-gyrotropic properties in magneto-optical nanostructures. Anomalous s-polarized transverse magneto-optical Kerr effect is observed in magneto-optical Mie resonators and split ring resonators, featuring giant gyrotropic permeability tensors at the near infrared. © Optica Publishing Group 2022, © 2022 The Author(s)

关键词： Infrared devices

来源：评论

学校读者我要写书评

暂无评论

Doping in the two-dimensional limit: p/n-type defects in monolayer ZnO

引用

Physical Review B 2022年第2期105卷 024104-024104页

作者： Dong Han Xian-Bin Li Dan Wang Nian-Ke Chen Xi-Wu Fan Changchun Institute of Optics Fine Mechanics and Physics Chinese Academy of Sciences Changchun 130033 People's Republic of China State Key Laboratory of Integrated Optoelectronics College of Electronic Science and Engineering Jilin University 130012 Changchun People's Republic of China Department of Mechanical Engineering and Materials Science Yale University New Haven Connecticut 06511 USA State Key Laboratory of Luminescence and Applications Changchun Institute of Optics Fine Mechanics and Physics Chinese Academy of Sciences Changchun 130033 People's Republic of China

The thickness limit is utilized to investigate the doping physics in ZnO, i.e., monolayer (ML) ZnO. First-principles study demonstrates that the p/n-type defects in ML ZnO still have doping asymmetry. Among the doping defect models widely studied in bulk ZnO, LiZn and GaZn with ionization energies of 0.86 and 0.82 eV are the optimal p- and n-type doping defects in ML ZnO, respectively. Their ionization energies are comparable with those of relatively shallow defects in other ML semiconductors. However, the LiZn acceptor faces a severe issue in that LiZn is the metastable structure and will transform into the most stable Jahn-Teller-distorted structure (LiZnJT) with increasing its ionization energy to 1.53 eV. Furthermore, our scanning tunneling microscopy simulations show even a little structural distortion of the doping defects can be easily detected with the appropriate positive bias voltage on a sample of ML ZnO. The present study reveals the p/n-type defects' properties in ML ZnO and offers a way to understand and directly identify defect behaviors in wide-band-gap semiconductors in their two-dimensional limit form.

关键词： Defects Point defects 2-dimensional systems II-VI semiconductors Wide band gap systems Density functional theory First-principles calculations

来源：评论

学校读者我要写书评

暂无评论

The Lithium-Ions Storage Behavior of Flexible and Binder-Free Multilayer Defective Graphene

SSRN

引用

SSRN 2024年

作者： Yang, Ying Zhang, Xuefu Zhao, Ruirui Chen, Yong P. Department of Engineering Science Faculty of Innovation Engineering Macau University of Science and Technology Av. Wai Long 999078 China Institute of New Energy for Vehicles School of Materials Science and Engineering Tongji University Shanghai201804 China National Key Laboratory of Materials for Integrated Circuits Shanghai Institute of Microsystem and Information Technology Chinese Academy of Sciences Shanghai200050 China Tohoku University Sendai980-8577 Japan Department of Physics and Astronomy Elmore Family School of Electrical and Computer Engineering Birck Nanotechnology Center Purdue Quantum Science and Engineering Institute Purdue University West LafayetteIN47907 United States Institute of Physics and Astronomy Villum Center for Hybrid Quantum Materials and Devices Aarhus University Aarhus-C 8000 Denmark

Graphene, a two-dimensional material made up of a single layer of carbon atoms, shows extraordinary electrical conductivity, exceptionally high specific surface area, and robust mechanical integrity, positioning graphene as an ideal anode material for lithium-ion batteries (LIBs). However, investigations of the utilization of pure multilayer graphene in lithium-ion batteries remain relatively scarce. Herein, multilayer graphene was fabricated by a scalable and common chemical vapor deposition (CVD) approach. Defects were formed during growth process, resulting in irregular local electron distributions in graphene. Using CVD growth graphene (CVD-graphene) as a free-standing and flexible anode for lithium-ion battery, it delivers a reversible areal capacity of 142 mAh cm−2 at a current of 0.1 μA and good cycle stability. The result demonstrates that surface pseudo-capacitance contribution mainly affects lithium-ion storage behaviors. The application of CVD-graphene for LIBs provides a promising way to develop lightweight and small electronic devices. © 2024, The Authors. All rights reserved.

关键词： Graphene

来源：评论

学校读者我要写书评

暂无评论

Power Grid Critical State Search Based on Improved Particle Swarm Optimization 6th

Power Grid Critical State Search Based on Improved Particle ...

引用

6th International Conference on Advanced Intelligent Systems and Informatics, AISI 2020

作者： Luo, Jie Deng, Hui-Qiong Li, Qin-Bin Zheng, Rong-Jin Li, Pei-Qiang Chang, Kuo-Chi School of Information Science and Engineering Fujian University of Technology Fuzhou350108 China Fujian Provincial University Engineering Research Center of Smart Grid Simulation Analysis and Integrated Control Fuzhou350108 China Fujian Provincial Key Laboratory of Big Data Mining and Applications Fujian University of Technology Fuzhou China College of Mechanical and Electrical Engineering National Taipei University of Technology Taipei Taiwan

ISBN: (纸本)9783030586683

This article proposes a method to find the closest critical initial running state of power grid, aiming at the possible chain reaction failure caused by branch fault in power system. First of all, assuming the initial failure of power grid, considering the specific performance of relay protection, analyze the critical state of the branch in cascading trip in detail, the electrical distance between the current running state and the interlocking fault expressed in the form of nodal injection power is given. Secondly, on the basic of the relationship between the nodal injections power and the system safety, a safety level model that the system will not trigger cascading failures is established. Finally, the improved simplified mean particle swarm optimization algorithm is used to solve the model, and an example is analyzed on IEEE-14 node system. An example shows the effectiveness and feasibility of the proposed method, which provides a reference for further prevention of cascading trip accidents. © 2021, The Editor(s) (if applicable) and The Author(s), under exclusive license to Springer Nature Switzerland AG.

关键词： Outages

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：