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Applications of MXenes in human-like sensors and actuators

Nano Research 2023年第4期16卷 5767-5795页

作者： Jinbo Pang Songang Peng Chongyang Hou Xiao Wang Ting Wang Yu Cao Weijia Zhou Ding Sun Kai Wang Mark H.Rümmeli Gianaurelio Cuniberti Hong Liu Institute for Advanced Interdisciplinary Research(iAIR) Collaborative Innovation Center of Technology and Equipment for Biological Diagnosis and Therapy in Universities of ShandongUniversity of JinanJinan 250022China Institute for Materials Science and Max Bergmann Center of Biomaterials Technische Universität DresdenDresden 01069Germany Center for Advancing Electronics Dresden Technische Universität DresdenDresden 01069Germany Dresden Center for Computational Materials Science Technische Universität DresdenDresden 01062Germany Dresden Center for Intelligent Materials(GCL DCIM) Technische Universität DresdenDresden 01062Germany High-Frequency High-Voltage Device and Integrated Circuits R&D Center Institute of MicroelectronicsChinese Academy of SciencesBeijing 100029China Key Laboratory of Microelectronic Devices&Integrated Technology Institute of MicroelectronicsChinese Academy of SciencesBeijing 100029China Shenzhen Key Laboratory of Nanobiomechanics Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen 518055China State Key Laboratory of Biobased Material and Green Papermaking Qilu University of TechnologyShandong Academy of SciencesJinan 250353China School of Bioengineering Qilu University of TechnologyShandong Academy of ScienceJinan 250353China Key Laboratory of Modern Power System Simulation and Control&Renewable Energy Technology(Ministry of Education) Northeast Electric Power UniversityJilin 132012China School of Electrical Engineering Northeast Electric Power UniversityJilin 132012China School of Electrical Engineering Weihai Innovation Research InstituteQingdao UniversityQingdao 266000China School of Electrical and Computer Engineering Jilin Jianzhu UniversityChangchun 130118China Institute for Complex Materials Leibniz Institute for Solid State and Materials Research Dresden(IFW Dresden)20 Helmholtz StrasseDresden 01069Germany College of Energy Soochow Institute for Energy and Materials Innovations Soochow UniversitySuzhou 215006China Key L

Human beings perceive the world through the senses of sight,hearing,smell,taste,touch,space,and *** first five senses are prerequisites for people to *** sensing organs upload information to the nervous systems,including the brain,for interpreting the surrounding ***,the brain sends commands to muscles reflexively to react to stimuli,including light,gas,chemicals,sound,and ***,as an emerging two-dimensional material,has been intensively adopted in the applications of various sensors and *** this review,we update the sensors to mimic five primary senses and actuators for stimulating muscles,which employ MXene-based film,membrane,and composite with other functional ***,a brief introduction is delivered for the structure,properties,and synthesis methods of ***,we feed the readers the recent reports on the MXene-derived image sensors as artificial retinas,gas sensors,chemical biosensors,acoustic devices,and tactile sensors for electronic ***,the actuators of MXene-based composite are ***,future opportunities are given to MXene research based on the requirements of artificial intelligence and humanoid robot,which may induce prospects in accompanying healthcare and biomedical engineering applications.

关键词： MXenes sensors actuators gas sensors biosensors tactile sensors sound sensors artificial retina

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Self-supervised On-device Federated Learning from Unlabeled Streams

arXiv

引用

arXiv 2022年

作者： Shi, Jiahe Wu, Yawen Zeng, Dewen Tao, Jun Hu, Jingtong Shi, Yiyu The State Key Laboratory of ASIC and System School of Microelectronics Fudan University Shanghai200433 China The Department of Computer Science and Engineering University of Notre Dame Notre DameIN46556 United States The Department of Electrical and Computer Engineering University of Pittsburgh PittsburghPA15261 United States

The ubiquity of edge devices has led to a growing amount of unlabeled data produced at the edge. Deep learning models deployed on edge devices are required to learn from these unlabeled data to continuously improve accuracy. Self-supervised representation learning has achieved promising performances using centralized unlabeled data. However, the increasing awareness of privacy protection limits centralizing the distributed unlabeled image data on edge devices. While federated learning has been widely adopted to enable distributed machine learning with privacy preservation, without a data selection method to efficiently select streaming data, the traditional federated learning framework fails to handle these huge amounts of decentralized unlabeled data with limited storage resources on edge. To address these challenges, we propose a Self-supervised On-device Federated learning framework with coreset selection, which we call SOFed, to automatically select a coreset that consists of the most representative samples into the replay buffer on each device. It preserves data privacy as each client does not share raw data while learning good visual representations. Experiments demonstrate the effectiveness and significance of the proposed method in visual representation learning. Copyright © 2022, The Authors. All rights reserved.

关键词： Data privacy

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Tunable Plasmons in Large-Area WTe2 Thin Films

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Physical Review Applied 2021年第1期15卷 014010-014010页

作者： Chong Wang Yangye Sun Shenyang Huang Qiaoxia Xing Guowei Zhang Chaoyu Song Fanjie Wang Yuangang Xie Yuchen Lei Zhengzong Sun Hugen Yan State Key Laboratory of Surface Physics and Department of Physics Fudan University Shanghai 200433 China Key Laboratory of Micro and Nano-Photonic Structures (Ministry of Education) Fudan University Shanghai 200433 China School of Microelectronics and State Key Laboratory of ASIC and System Fudan University Shanghai 200433 China Institute of Flexible Electronics Northwestern Polytechnical University Xi’an 710072 China

The observation of electrically tunable and highly confined plasmons in graphene has stimulated the exploration of interesting properties of plasmons in other two-dimensional materials. Recently, hyperbolic plasmon resonance modes have been observed in exfoliated WTe2 films, a type-II Weyl semimetal with layered structure, providing a platform for the assembly of plasmons with hyperbolicity and exotic topological properties. However, the plasmon modes were observed in relatively thick and small-area films, which restrict the tunability and application for plasmons. Here, large-area (approximately cm) WTe2 films with different thicknesses are grown by the chemical vapor deposition method, in which plasmon resonance modes are observed in films with different thicknesses down to about 8 nm. Hybridization of plasmon and surface polar phonons of the substrate is revealed by mapping the plasmon dispersion. The plasmon frequency is demonstrated to be tunable by changing the temperature and film thickness. Our results facilitate the development of a tunable and scalable WTe2 plasmonic system for revealing topological properties and towards various applications in sensing, imaging, and light modulation.

关键词： Optoelectronics Phonons Plasmonics Topological effects in photonic systems 2-dimensional systems Semimetals Transition metal dichalcogenides Chemical vapor deposition

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Isopropanol swelling of polydimethylsiloxane for reducing gold nanoparticles to enhance photoacoustic transducer

Isopropanol swelling of polydimethylsiloxane for reducing go...

引用

International Conference on Solid-state and Integrated Circuit Technology

作者： Qing Wang Xubo Wang Shuren Song Antoine Riaud Jia Zhou State Key Laboratory of ASIC and System School of Microelectronics Fudan University Shanghai China

ISBN: (数字)9781728162355

ISBN: (纸本)9781728162362

Gold nanoparticles (Au NPs)-polydimethylsiloxane (PDMS) nanocomposite has been of particular interest in the photoacoustic (PA) transducer with characteristics of good high frequency and wide bandwidth. To form highly-efficient Au NPs-PDMS nanocomposite, one developed synthesis method is based on solvent swelling of PDMS, like use of water and ethanol. In this work, we synthesized a new Au NPs-PDMS nanocomposite where isopropanol was chosen as solvent to form Au NPs partly embedded into PDMS matrix by means of top-down in-situ reduction. We measured morphological characteristics of the nanocomposite. Optical absorption and PA generation were tested to evaluate performances. The results demonstrate that isopropanol as solvent is beneficial to enhance PA generation in terms of high light absorption (95%) and 6.38 nm of PA amplitude with 6 cm s -1 of vibration speed which is higher than ethanol and even 6-fold more than water. These enhanced characteristics support using Au NPs nanocomposite as high-amplitude and high-frequency photoacoustic transuducer material.

关键词： Gold Absorption Nanocomposites Solvents Ethanol Optical imaging Transducers

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Cryogenic quasi-static embedded DRAM for energy-efficient compute-in-memory applications

arXiv

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arXiv 2023年

作者： Shu, Yuhao Zhang, Hongtu Sun, Hao Zhang, Mengru Zhao, Wenfeng Deng, Qi Tang, Zhidong Yuan, Yumeng Hu, Yongqi Gu, Yu Kou, Xufeng Ha, Yajun School of Information Science and Technology ShanghaiTech University Shanghai China Shanghai Institute of Microsystem and Information Technology Chinese Academy of Sciences Shanghai China School of Electronic Electrical and Communication Engineering University of Chinese Academy of Sciences Beijing China State Key Laboratory of Integrated Chip and System Frontier Institute of Chip and System Fudan University Shanghai China State Key Laboratory of ASIC and System School of Microelectronics Fudan University Shanghai China Department of Electrical and Computer Engineering Binghamton University SUNY BinghamtonNY United States Shanghai Advanced Research Institute Chinese Academy of Sciences Shanghai China Shanghai Engineering Research Center of Energy Efficient and Custom AI IC Shanghai China

Compute-in-memory (CIM) presents an attractive approach for energy-efficient computing in data-intensive applications. However, the development of suitable memory designs to achieve high-performance CIM remains a challenging task. Here, we propose a cryogenic quasi-static embedded DRAM to address the logic-memory mismatch of CIM. Guided by the re-calibrated cryogenic device model, the designed four-transistor bit-cell achieves full-swing data storage, low power consumption, and extended retention time at cryogenic temperatures. Combined with the adoption of cryogenic write bitline biasing technique and readout circuitry optimization, our 4Kb cryogenic eDRAM chip demonstrates a 1.37×106 times improvement in retention time, while achieving a 75 times improvement in retention variability, compared to room-temperature operation. Moreover, it also achieves outstanding power performance with a retention power of 112 fW and a dynamic power of 108 µW at 4.2 K, which can be further decreased by 7.1% and 13.6% using the dynamic voltage scaling technique. This work reveals the great potential of cryogenic CMOS for high-density data storage and lays a solid foundation for energy-efficient CIM implementations. Copyright © 2023, The Authors. All rights reserved.

关键词： Computation theory

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Memristive switching in the surface of a charge-density-wave topological semimetal

arXiv

引用

arXiv 2024年

作者： Ma, Jianwen Meng, Xianghao Zhang, Binhua Wang, Yuxiang Mou, Yicheng Lin, Wenting Dai, Yannan Chen, Luqiu Wang, Haonan Wu, Haoqi Gu, Jiaming Wang, Jiayu Du, Yuhan Liu, Chunsen Shi, Wu Yang, Zhenzhong Tian, Bobo Miao, Lin Zhou, Peng Duan, Chun-Gang Xu, Changsong Yuan, Xiang Zhang, Cheng State Key Laboratory of Surface Physics Institute for Nanoelectronic Devices and Quantum Computing Fudan University Shanghai200433 China State Key Laboratory of Precision Spectroscopy East China Normal University Shanghai200241 China Institute of Computational Physical Sciences State Key Laboratory of Surface Physics Department of Physics Fudan University Shanghai200433 China Shanghai Qi Zhi Institute Shanghai200030 China School of Physics Southeast University Nanjing211189 China Department of Electronics East China Normal University Shanghai200241 China Shanghai Center of Brain-inspired Intelligent Materials and Devices East China Normal University Shanghai200241 China State Key Laboratory of ASIC and System School of Microelectronics Fudan University Shanghai200433 China Frontier Institute of Chip and System Fudan University Shanghai200433 China Zhangjiang Fudan International Innovation Center Fudan University Shanghai201210 China School of Physics and Electronic Science East China Normal University Shanghai200241 China

Owing to the outstanding properties provided by nontrivial band topology, topological phases of matter are considered as a promising platform towards low-dissipation electronics, efficient spin–charge conversion, and topological quantum computation. Achieving ferroelectricity in topological materials enables the non-volatile control of the quantum states, which could greatly facilitate topological electronic research. However, ferroelectricity is generally incompatible with systems featuring metallicity due to the screening effect of free carriers. In this study, we report the observation of memristive switching based on the ferroelectric surface state of a topological semimetal (TaSe4)2I. We find that the surface state of (TaSe4)2I presents out-of-plane ferroelectric polarization due to surface reconstruction. With the combination of ferroelectric surface and charge-density-wave-gapped bulk states, an electric-switchable barrier height can be achieved in (TaSe4)2I–metal contact. By employing a multi-terminal-grounding design, we manage to construct a prototype ferroelectric memristor based on (TaSe4)2I with on/off ratio up to 103, endurance over 103 cycles, and good retention characteristics. The origin of the ferroelectric surface state is further investigated by first-principles calculations, which reveals an interplay between ferroelectricity and band topology. The emergence of ferroelectricity in (TaSe4)2I not only demonstrates it as a rare but essential case of ferroelectric topological materials, but also opens new routes towards the implementation of topological materials in functional electronic devices. © 2024, CC BY.

关键词： Ferroelectricity

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1d/2d/0d Mixed Dimensional Tio2/Zno/Ag Core-Shell Nanowires Forhigh Performance Uv-Vis Photoelectrochemical Photodetector

SSRN

引用

SSRN 2022年

作者： Jiang, Xishun Tao, Jia-Jia Zhang, Yongchun Zhang, Yangyi Shi, Yonghua School of Mechanical and Electronic Engineering Chuzhou University Chuzhou239000 China The 50th Research Institute of China Electronics Technology Group Corporation Shanghai200331 China State Key Laboratory of ASIC and System Shanghai Institute of Intelligent Electronics & Systems School of Microelectronics Fudan University Shanghai200433 China

The 1D/2D/0D mixed dimensional TiO 2 /ZnO/Ag core-shell nanowires (NWs) were prepared by combining hydrothermal process, magnetron sputtering, and photo-deposition approaches for UV-Vis light photoelectrochemical photodetector *** PEC photodetector based on TiO 2 /ZnO/Ag NWs exhibited excellent performance including high on/off ratio ( PDCR of 1.46×10 4 and 1.16×10 4 ), high responsivity ( R of 730 and 490 mA/W), large detectivity ( D* of 9.1×10 9 and 6.1×10 9 Jones), and fast response speed ( τ r / τ d of 1.10/0.91 and 1.52/0.61 s) under 40 mW/cm 2 illumination of 380 and 420 nm at bias of 1.5 V, respectively. The localized surface plasmon resonance (LSPR) of 0D Ag quantum dots (QDs) and unique type-II band alignment of 1D TiO 2 NWs/2D ZnO nanosheets (NSs) structure enhances the light absorption, the generation and separation of the photogenerated carriers, which lead to great enhancement of photodetector performance. Moreover, by introducing of 2D ZnO NSs and 0D Ag QDs also enhances the light intensity within the 1D TiO 2 NWs is also confirmed by light absorption tests and optical simulations. This work provides a feasible approach to fabricate mixed dimensional heterostructures for high performance optoelectronic device. © 2022, The Authors. All rights reserved.

关键词： Zinc oxide

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A 28nm 1.5Mb Embedded 1T2R RRAM with 14.8 Mb/mm2 using Sneaking Current Suppression and Compensation Techniques

A 28nm 1.5Mb Embedded 1T2R RRAM with 14.8 Mb/mm2 using Sneak...

引用

2020 IEEE Symposium on VLSI Circuits, VLSI Circuits 2020

作者： Yang, Jianguo Xue, Xiaoyong Xu, Xiaoxin Lv, Hangbing Zhang, Feng Zeng, Xiaoyang Chang, Meng-Fan Liu, Ming Key Laboratory of Microelectronics Devices and Integrated Technology Institute of Microelectronics Chinese Academy of Sciences China State Key Laboratory of Asic and System Fudan University China University of Chinese Academy of Sciences China Department of Electrical Engineering National Tsing Hua University Taiwan

ISBN: (纸本)9781728199429

For the first time, 1T2R RRAM cell using PMOS selector is proposed and demonstrated with improved reset voltage and high density for embedded NVM. Hierarchical bit line and 3-state cell storage confine the associated sneaking current locally within a small zone and further suppress it by >90%. Self-adaptive write driver with current limiter and sneaking current compensator realizes power saving and accurate current compliance for set. To suit PMOS selector, reverse read using current sensing with dummy reference brings fast and reliable read. A 1.5Mb RRAM test chip in 28nm improved the record storage density by 40% to 14.8 Mb/mm2. Reliable read is performed at low VDD of 0.6V(-40, 125)°C. © 2020 IEEE.

关键词： RRAM

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Novel semiconductor devices based on SOL substrate

Novel semiconductor devices based on SOL substrate

引用

2020 China Semiconductor Technology International Conference, CSTIC 2020

作者： Xiao, K. Liu, J. Deng, J.N. Jiang, Y.L. Bao, W.Z. Zaslavsky, A. Cristoloveanu, S. Gong, X. Wan, J. State Key Lab of ASIC and System School of Information Science and Engineering Fudan University Shanghai China State Key Lab of ASIC and System School of Microelectronics Fudan University Shanghai China Brown University Department of Physics and School of Engineering ProvidenceRI02912 United States IMEP-LAHC INP-Grenoble/Minatec Grenoble38016 France Singapore

ISBN: (纸本)9781728165585

In this work, we review our recent studies on several novel devices built on silicon-on-insulator (SOI) substrates. The sharp-switching Z2-FET, based on a feedback mechanism, has been demonstrated as suitable for many applications. The PISD, capable of in-situ photoelectron sensing, has been used as a one-transistor active pixel sensor (1T-APS). Furthermore, an SOI/MoS2 heterojunction FET has been demonstrated as both a photodetector with a dynamic response spectrum and as a novel one-transistor wavelength detector (1T-WD) with an output signal sensitive to the variation of wavelength rather than intensity. © 2020 IEEE.

关键词： Heterojunctions

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Fpga-implemented Real-Time DSP framework enabling experimental 50 m Photonics-Aided Millimeter-Wave links with enhanced frequency offset compensation

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Optics & Laser Technology 2025年 191卷

作者： Tianqi Zheng Kaihui Wang Sheng Hu Xiongwei Yang Long Zhang Chen Wang Bohan Sang Chengzhen Bian Jianjun Yu State Key Laboratory of ASIC and System Key Laboratory for Information Science of Electromagnetic Waves (MoE) and the School of Information Science and Technology Fudan University Shanghai 200433 China

We experimentally demonstrate a 50 m wireless W-band photonics-aided transmission system with FPGA-implemented real-time DSP, achieving robust 7.3728 GBaud quadrature phase shift keying (QPSK) signal recovery. At the core of the digital signal processing (DSP) framework lies a novel frequency offset estimation algorithm, termed PF-CT-FOE, that integrates phase folding with cumulative phase transition feedback, resolving the accuracy-efficiency trade-off in large-frequency-offset compensation for real-time photonics-aided millimeter-wave systems. Building on this innovation, a parallelized real-time DSP framework is established specifically optimized for photonics-aided millimeter wave transmission. Through comprehensive numerical simulations, we characterized the performance of both the T/2-spaced constant modulus algorithm (T/2 CMA) and the proposed FOE algorithm, while all signal equalization and recovery components were fully implemented and validated on a field-programmable gate array (FPGA) platform. Implemented on 128-parallel FPGA paths, the system achieves real-time recovery of 7.3728 GBaud QPSK signals over 100 m fiber and 50 m wireless links with 1.2 × 10 -4 BER, below the 3.8 × 10 -3 threshold for HD-FEC. This work establishes a practical pathway for cost-sensitive millimeter-wave backhaul deployments requiring sub-ms latency.

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