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arXiv 2022年

作者： Cho, Soohyun Huh, Soonsang Fang, Yuqiang Hua, Chenqiang Bai, Hua Jiang, Zhicheng Liu, Zhengtai Liu, Jishan Chen, Zhenhua Fukushima, Yuto Harasawa, Ayumi Kawaguchi, Kaishu Shin, Shik Kondo, Takeshi Lu, Yunhao Mu, Gang Huang, Fuqiang Shen, Dawei State Key Laboratory of Functional Materials for Informatics 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 Institute for Solid State Physics University of Tokyo Kashiwa277-8581 Japan Zhejiang Province Key Laboratory of Quantum Technology and Device Department of Physics Zhejiang University Hangzhou310027 China Shanghai Synchrotron Facility Shanghai Advanced Research Institute Chinese Academy of Sciences Shanghai201204 China Trans-scale Quantum Science Institute University of Tokyo Tokyo113-0033 Japan State Key Laboratory of High Performance Ceramics and Superfine Microstructure Shanghai Institute of Ceramics Chinese Academy of Science Shanghai200050 China State Key Laboratory of Rare Earth Materials Chemistry and Applications College of Chemistry and Molecular Engineering Peking University Beijing100871 China

The quantum spin Hall (QSH) effect has attracted extensive research interest because of the potential applications in spintronics and quantum computing, which is attributable to two conducting edge channels with opposite spin polarization and the quantized electronic conduc- tance of 2e2/h. Recently, 2M-WS2, a new stable phase of transition metal dichalcogenides with a 2M structure showing an identical layer configuration to that of the monolayer 1T′ TMDs, was suggested to be a QSH insulator as well as a superconductor with critical transition temper- ature around 8 K. Here, high-resolution angle-resolved photoemission spectroscopy (ARPES) and spin-resolved ARPES are applied to investigate the electronic and spin structure of the topological surface states (TSS) in the superconducting 2M-WS2. The TSS exhibits charac- teristic spin-momentum-locking behavior, suggesting the existence of long-sought nontrivial Z2 topological states therein. We expect that 2M-WS2 with co-existing superconductivity and TSS might host the promising Majorana bound states. © 2022, CC BY-NC-ND.

关键词： Tungsten compounds

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Mid-infrared Chalcogenide Suspended Slot Waveguide for Gas Sensing 5

Mid-infrared Chalcogenide Suspended Slot Waveguide for Gas S...

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5th Optoelectronics Global Conference, OGC 2020

作者： Pi, Mingquan Zheng, Chuantao Peng, Zihang Zhao, Huan Lang, Jiaming Liang, Lei Zhang, Yu Wang, Yiding Tittel, Frank K. Jilin University State Key Laboratory of Integrated Optoelectronics College of Electronic Science and Engineering 2699 Qianjin Street Changchun130012 China Changchun Institute of Optics Fine Mechanics and Physics Chinese Academy of Sciences State Key Laboratory of Luminescence and Applications Changchun130033 China Rice University Department of Electrical and Computer Engineering 6100 Main Street HoustonTX77005 United States

ISBN: (纸本)9781728198606

A chalcogenide (ChG) vertical slot waveguide and a ChG horizontal slot waveguide racetrack resonator were proposed for gas sensing. The vertical slot waveguide and the upper strip waveguide of the horizontal slot waveguide are suspended to enhance light-gas interaction. The waveguide sensors were optimized and the sensing performances were studied numerically. © 2020 IEEE.

关键词： Resonators

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Study of Advanced Low-Cost Smart Prepaid Electricity Meter Using Arduino and GSM 16th

Study of Advanced Low-Cost Smart Prepaid Electricity Meter U...

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16th International Conference on Intelligent Information Hiding and Multimedia Signal Processing, IIH-MSP 2020 in conjunction with the 13th International Conference on Frontiers of Information Technology, applications and Tools, FITAT 2020

作者： Omer, Abdalaziz Altayeb Ibrahim Chang, Kuo-Chi Deng, Hui-Qiong Chu, Kai-Chun Amesimenu, Governor David Kwabena Zhou, Yu-Wen Chang, Fu-Hsiang School of Information Science and Engineering Fujian University of Technology Fuzhou China Fujian Provincial University Engineering Research Genter 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 Department of Business Management Fujian University of Technology Fuzhou China Department of Tourism Shih-Hsin University Taipei Taiwan College of Mechanical and Electrical Engineering National Taipei University of Technology Taipei Taiwan Department of Business Administration North Borneo University College Sabah Malaysia

ISBN: (纸本)9789813364196

The use of prepaid electricity meters appeared in many countries a few years ago and has been widely recognized by consumers and managed to find solutions to too many problems faced by distribution companies. But for traditional systems, users must purchase electricity and manually charge the meter. For example, if he is in the office and needs to charge the house electricity meter, then he must go home to do this, which is considered a waste of time and energy. However, the advanced low-cost smart prepaid electricity meter is a solution to the problem mentioned earlier. By sending GSM text messages to the Arduino as a microcontroller through the GSM module, consumers can use their mobile phones to charge the electricity meter anywhere. This is the main reason for the microcontroller. The control process is also connected to an electricity meter and also to a relay module to provide power for consumers or consumers when the balance is equal to zero. © 2021, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Global system for mobile communications

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Tunable coupling of a quantum phononic resonator to a transmon qubit with flip-chip architecture

arXiv

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arXiv 2024年

作者： Ruan, Xinhui Li, Li Liang, Guihan Zhao, Silu Wang, Jia-Heng Bu, Yizhou Chen, Bingjie Song, Xiaohui Li, Xiang Zhang, He Wang, Jinzhe Zhao, Qianchuan Xu, Kai Fan, Heng Liu, Yu-Xi Zhang, Jing Peng, Zhihui Xiang, Zhongcheng Zheng, Dongning Beijing National Laboratory for Condensed Matter Physics Institute of Physics Chinese Academy of Sciences Beijing100190 China Department of Automation Tsinghua University Beijing100084 China Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education Key Laboratory for Matter Microstructure and Function of Hunan Province Department of Physics Synergetic Innovation Center for Quantum Effects and Applications Hunan Normal University Changsha410081 China School of Physical Sciences University of Chinese Academy of Sciences Beijing100049 China School of Integrated Circuits Tsinghua University Beijing100084 China Hefei National Laboratory Hefei230088 China School of Automation Science and Engineering Xi'an Jiaotong University Xi’an710049 China MOE Key Lab for Intelligent Networks and Network Security Xi'an Jiaotong University Xi’an710049 China CAS Center for Excellence in Topological Quantum Computation School of Physical Sciences University of Chinese Academy of Sciences Beijing100049 China

A hybrid system with tunable coupling between phonons and qubits shows great potential for advancing quantum information processing. In this work, we demonstrate strong and tunable coupling between a surface acoustic wave (SAW) resonator and a transmon qubit based on galvanic-contact flip-chip technique. The coupling strength varies from 2π×7.0 MHz to -2π×20.6 MHz, which is extracted from different vacuum Rabi oscillation frequencies. The phonon-induced ac Stark shift of the qubit at different coupling strengths is also shown. Our approach offers a good experimental platform for exploring quantum acoustics and hybrid systems. Copyright © 2024, The Authors. All rights reserved.

关键词： Hybrid systems

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DeePMD-kit v3: A Multiple-Backend Framework for Machine Learning Potentials

arXiv

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arXiv 2025年

作者： Zeng, Jinzhe Zhang, Duo Peng, Anyang Zhang, Xiangyu He, Sensen Wang, Yan Liu, Xinzijian Bi, Hangrui Li, Yifan Cai, Chun Zhang, Chengqian Du, Yiming Zhu, Jia-Xin Mo, Pinghui Huang, Zhengtao Zeng, Qiyu Shi, Shaochen Qin, Xuejian Yu, Zhaoxi Luo, Chenxing Ding, Ye Liu, Yun-Pei Shi, Ruosong Wang, Zhenyu Bore, Sigbjørn Løland Chang, Junhan Deng, Zhe Ding, Zhaohan Han, Siyuan Jiang, Wanrun Ke, Guolin Liu, Zhaoqing Lu, Denghui Muraoka, Koki Oliaei, Hananeh Singh, Anurag Kumar Que, Haohui Xu, Weihong Xu, Zhangmancang Zhuang, Yong-Bin Dai, Jiayu Giese, Timothy J. Jia, Weile Xu, Ben York, Darrin M. Zhang, Linfeng Wang, Han School of Artificial Intelligence and Data Science Unversity of Science and Technology of China Hefei China AI for Science Institute Beijing100080 China DP Technology Beijing100080 China Academy for Advanced Interdisciplinary Studies Peking University Beijing100871 China State Key Lab of Processors Institute of Computing Technology Chinese Academy of Sciences Beijing100871 China University of Chinese Academy of Sciences Beijing China Baidu Inc. Beijing China Department of Computer Science University of Toronto TorontoON Canada Department of Chemistry Princeton University PrincetonNJ08540 United States University of Chinese Academy of Sciences Beijing100871 China State Key Laboratory of Physical Chemistry of Solid Surfaces iChEM College of Chemistry and Chemical Engineering Xiamen University Xiamen361005 China College of Integrated Circuits Hunan University Changsha410082 China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Center for Smart Materials and Device Integration School of Material Science and Engineering Wuhan University of Technology Wuhan430070 China College of Science National University of Defense Technology Changsha410073 China Hunan Key Laboratory of Extreme Matter and Applications National University of Defense Technology Changsha410073 China ByteDance Research Beijing100098 China Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences Ningbo315201 China College of Materials Science and Opto-Electronic Technology University of Chinese Academy of Sciences Beijing100049 China Key Laboratory of Theoretical and Computational Photochemistry of Ministry of Education College of Chemistry Beijing Normal University Beijing100875 China Department of Geosciences Princeton University PrincetonNJ08544 United States Department of Applied Physics and Applied Mathematics Columbia University New YorkNY10027 United States IKKEM Fujian Xiamen361005 China Graduate

In recent years, machine learning potentials (MLPs) have become indispensable tools in physics, chemistry, and materials science, driving the development of software packages for molecular dynamics (MD) simulations and related applications. These packages, typically built on specific machine learning frameworks such as TensorFlow, PyTorch, or JAX, face integration challenges when advanced applications demand communication across different frameworks. The previous TensorFlow-based implementation of DeePMD-kit exemplified these limitations. In this work, we introduce DeePMD-kit version 3, a significant update featuring a multi-backend framework that supports TensorFlow, PyTorch, JAX, and PaddlePaddle backends, and demonstrate the versatility of this architecture through the integration of other MLPs packages and of Differentiable Molecular Force Field. This architecture allows seamless backend switching with minimal modifications, enabling users and developers to integrate DeePMD-kit with other packages using different machine learning frameworks. This innovation facilitates the development of more complex and interoperable workflows, paving the way for broader applications of MLPs in scientific research. Copyright © 2025, The Authors. All rights reserved.

关键词： Molecular dynamics

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Fabrication of 4-inch Single-Crystalline InP Thin Film on Si Substrate by Ion-Cutting Technique with Wafer Bonding at Elevated Temperature

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Vacuum 2025年

作者： Tian Liang Shangyu Yang Shujie Wang Jialiang Sun Jiajie Lin Ailun Yi Weijian Zheng Min Zhou Yi Yang Niefeng Sun Tiangui You Xin Ou School of Materials and Chemistry University of Shanghai for Science and Technology Shanghai 200093 China State Key Laboratory of Materials for Integrated Circuits Shanghai Institute of Microsystem and Information Technology Chinese Academy of Sciences Shanghai 200050 China College of Information Science and Engineering Jiaxing University Jiaxing Zhejiang 314001 China The Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences Beijing 100049 China

The integration of InP thin films onto silicon substrates holds significant promise for optoelectronic device applications. However, achieving large-area, high-quality single-crystal InP films on silicon remains a major challenge. In this work, 4-inch, 200 nm-thick single-crystal InP thin films were successfully transferred onto silicon substrates using ion-cutting of an InP/InGaAs epitaxial structure. To address thermal stress issues during the ion-cutting process for large-area heterogeneous integration wafers, finite element simulations were conducted to analyze thermal stress distributions under different bonding and annealing temperatures. The simulation results revealed abrupt thermal stress concentrations at the edges of the InP/Si bonding pairs, which could be mitigated by bonding at an elevated temperature of 55 °C. The InP/InGaAs epitaxial structure effectively reduced the residual H-ion concentration of the InP film after annealing, with defects localized in the epitaxial InGaAs layer. Following the selective etching of the InGaAs layer, a high-quality 4-inch InP thin film was obtained, exhibiting a surface roughness of 0.347 nm, a full width at half maximum (FWHM) of 212.4 arcsec for the X-ray rocking curve, and a thickness uniformity of 98%. The large-area InP/Si heterogeneous integration substrate fabricated by ion-cutting with wafer bonding at elevated temperature represents a promising material platform for optoelectronic integration and high-speed electronic applications.

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Observation of optical gyromagnetic properties in magneto-optical metamaterials

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

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Conference on Lasers and Electro-Optics (CLEO)

作者： Shuang Xia Weihao Yang Daria Ignatyeva Qing Liu Hanbin Wang Jun Qin Vladimir I. Belotelov Yiqin Chen Huigao Duan Yi Luo Ondřej Novák Martin Veis Longjiang Deng Lei Bi National Engineering Research Center of Electromagnetic Radiation Control Materials University of Electronic Science and Technology of China Chengdu China State Key Laboratory of Electronic Thin-Films and Integrated Devices University of Electronic Science and Technology of China Chengdu China Faculty of Physics Lomonossov Moscow State University Leninskie Gory Moscow Russia College of Mechanical and Vehicle Engineering National Engineering Research Center for High Efficiency Grinding Hunan University Changsha China China Academy of Engineering Physics Microsystem and Terahertz Research Center Chengdu China Faculty of Mathematics and Physics Charles University of Prague Prague 2 Czech Republic

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 ... 详细信息

ISBN: (数字)9781957171050

ISBN: (纸本)9781665466660

关键词： Tensors Permittivity measurement Gyromagnetism Permeability measurement Metamaterials Magnetic materials Permeability

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Metastable phase formation in superlattice-like Sb-SbSe 2 enables low-power operation and suppressed resistance drift

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Applied Surface science 2025年

作者： Ruirui Liu Liu Liu Anding Li Yukun Chen He Zhang Dexu Feng Jiayue Xu Xinxi Lu Jiwei Zhai Zhitang Song Xiao Zhou Sannian Song School of Materials Science and Engineering Shanghai Institute of Technology Shanghai 201418 China School of Software Beihang University Beijing 100191 China Shanghai Key Laboratory for R&D and Application of Metallic Functional Materials School of Materials Science & Engineering Tongji University Shanghai 201804 China State Key Laboratory of Materials for Integrated Circuits Shanghai Institute of Microsystem and Information Technology Chinese Academy of Sciences Shanghai 200050 China State Key Lab of Metal Matrix Composites School of Materials Science and Engineering Shanghai Jiao Tong University Shanghai 200240 China

This study addresses the prevalent issues of high-power consumption and significant resistance drift in phase change memory by investigating the phase transition behavior and atomic structure of Sb-SbSe 2 superlattice-like materials. Thin films were fabricated via alternate magnetron sputtering of Sb and SbSe 2 , enabling a systematic exploration of the underlying phase transition mechanisms. Experimental results demonstrate that the precisely controlled metastable phase substantially enhances phase transition efficiency, allowing SET/RESET switching with a pulse width as short as 5 ns and reducing the RESET energy consumption to 5.1 × 10 −13  J. Notably, the optimized material design effectively suppresses the resistance drift coefficient to ≤0.05, markedly enhancing resistance stability during long-term data storage. These findings offer a novel technical pathway for next-generation phase change memory devices featuring low power consumption and high stability.

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Electronic structure and spatial inhomogeneity of iron-based superconductor FeS

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Chinese Physics B 2020年第4期29卷 110-115页

作者： Chengwei Wang Meixiao Wang Juan Jiang Haifeng Yang Lexian Yang Wujun Shi Xiaofang Lai Sung-Kwan Mo Alexei Barinov Binghai Yan Zhi Liu Fuqiang Huang Jinfeng Jia Zhongkai Liu Yulin Chen State Key Laboratory of Functional Materials for Informatics Shanghai Institute of Microsystem and Information Technology(SIMIT)Chinese Academy of SciencesShanghai 200050China School of Physical Science and Technology ShanghaiTech UniversityCAS-Shanghai Science Research CenterShanghai 200031China University of Chinese Academic of Sciences Beijing 100049China Advanced Light Source Lawrence Berkeley National LaboratoryBerkeleyCA 94720USA State Key Laboratory of Low Dimensional Quantum Physics Department of Physics and Collaborative Innovation Center for Quantum MatterTsinghua UniversityBeijing 100084China Beijing National Laboratory for Molecular Sciences and State Key Laboratory of Rare Earth Materials Chemistry and Applications College of Chemistry and Molecular EngineeringPeking UniversityBeijing 100871China Elettra-Sincrotrone Trieste ScPA TriesteBasovizza 34149Italy Max Planck Institute for Chemical Physics of Solids D-01187 DresdenGermany State Key Laboratory of High Performance Ceramics and Superfine Microstructure Shanghai Institute of CeramicsChinese Academy of SciencesShanghai 200050China Key Laboratory of Artificial Structures and Quantum Control(Ministry of Education) Department of Physics and AstronomyShanghai Jiao Tong UniversityShanghai 200240China Physics Department Oxford UniversityOxfordOX13PUUK

Iron-based superconductor family FeX(X=S,Se,Te)has been one of the research foci in physics and material science due to their record-breaking superconducting temperature(FeSe film)and rich physical ***,FeS,the least studied Fe X compound(due to the difficulty in synthesizing high quality macroscopic crystals)attracted much attention because of its puzzling superconducting pairing *** this work,combining scanning tunneling microscopy and angle resolved photoemission spectroscopy(ARPES)with sub-micron spatial resolution,we investigate the intrinsic electronic structures of superconducting FeS from individual single crystalline *** FeTe or FeSe,FeS remains identical tetragonal structure from room temperature down to 5 K,and the band structures observed can be well reproduced by our ab-initio ***,mixed with the 1×1 tetragonal metallic phase,we also observe the coexistence of √5×√5 reconstructed insulating phase in the crystal,which not only helps explain the unusual properties of FeS,but also demonstrates the importance of using spatially resolved experimental tools in the study of this compound.

关键词： angle-resolved photoemission with spatially resolution scanning tunneling microscopy iron-based superconductor electronic band structure

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Fabrication of a Humidity-Resistant Formaldehyde Gas Sensor Through Layering a Molecular Sieve on 3d Ordered Mesoporous Sno2 Decorated with AU Nanoparticles

SSRN

引用

SSRN 2022年

作者： Liu, Wei Xu, Lin Guo, Junmeng Wei, Lei Cheng, Gang Du, Zuliang Key Lab for Special Functional Materials Ministry of Education National & Local Joint Engineering Research Center for High-efficiency Display and Lighting Technology School of Materials Science and Engineering Collaborative Innovation Center of Nano Functional Materials and Applications Henan University Kaifeng475004 China State Key Laboratory of Integrated Optoelectronics College of Electronic Science and Engineering Jilin University Changchun130012 China School of Electrical and Electronic Engineering Nanyang Technological University 50 Nanyang Avenue Singapore639798 Singapore CNRS NTU/THALES UMI3288 Research Techno Plaza 50 Nanyang Drive Singapore637553 Singapore

The development of highly-sensitive and moisture resistant semiconductor metal oxide (SMO) gas sensors for practical application remains a challenge. Here, a three-dimensional ordered mesoporous (3DOM) SnO2 decorated with Au nanoparticles (NPs) was obtained via a facile self-assembly template method and the Au content was optimized. The 3DOM Au/SnO2 gas sensor displayed remarkable performance, with a response and a lower actual detection limit to formaldehyde 10.2 times higher and 500 times lower, respectively, compared to the undecorated 3DOM SnO2 sensor at 110 °C. Meanwhile, the fast response-recovery process and the repeatability, stability, and selectivity can meet the requirements for practical application. Density functional theory calculations revealed that the Au/SnO2 NPs have strong adsorption energies and electrical conductivity, allowing for selective formaldehyde detection. Further, the 3MCM-48 layer protects the 3DOM Au/SnO2 layer from moisture, allowing at least 80% of the initial response value to formaldehyde to be maintained even at > 90% relative humidity. Hence, the proposed strategy represents a universal and effective way to achieve high response and moisture-resistant formaldehyde sensors for the first time, and demonstrates the potential of SMO gas sensors for indoor air monitoring. © 2022, The Authors. All rights reserved.

关键词： Formaldehyde

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