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Electrohydrodynamic printing for high resolution patterning of flexible electronics toward industrial applications

InfoMat 2024年第2期6卷 28-56页

作者： Zhouping Yin Dazhi Wang Yunlong Guo Zhiyuan Zhao Liqiang Li Wei Chen Yongqing Duan State Key Laboratory of Intelligent Manufacturing Equipment and Technology Huazhong University of Science and TechnologyWuhanthe People's Republic of China Optics Valley Laboratory Wuhanthe People's Republic of China Key Laboratory for Micro/Nano Technology and System of Liaoning Province Dalian University of TechnologyDalianthe People's Republic of China Beijing National Laboratory for Molecular Sciences Key Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of SciencesBeijingthe People's Republic of China Institute of Molecular Aggregation Sciences Tianjin UniversityTianjinthe People's Republic of China

Electrohydrodynamic(EHD)printing technique,which deposits micro/nanostructures through high electric force,has recently attracted significant research interest owing to their fascinating characteristics in high resolution(<1μm),wide material applicability(ink viscosity 1–10000 cps),tunable printing modes(electrospray,electrospinning,and EHD jet printing),and compatibility with flexible/wearable *** the laboratory level of the EHD printed electronics'resolution and efficiency is gradually approaching the commercial application level,an urgent need for developing EHD technique from laboratory into industrialization have been put ***,we first discuss the EHD printing technique,including the ink design,droplet formation,and key technologies for promoting printing efficiency/*** we summarize the recent progress of EHD printing in fabrication of displays,organic field-effect transistors(OFETs),transparent electrodes,and sensors and ***,a brief summary and the outlook for future research effort are presented.

关键词： display electrohydrodynamic printing flexible electronics organic field-effect transistor printhead

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Design, synthesis and biological evaluation of Leu10-teixobactin analogues

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Chinese Chemical Letters 2025年第4期36卷 187-191页

作者： Yanye Fan Jingjing Chen Bichun Chen Jinyu Bai Bowen Yang Feng Liang Lijing Fang The State Key Laboratory of Refractories and Metallurgy School of Chemistry and Chemical Engineering Wuhan University of Science and Technology Guangdong Key Laboratory of Nanomedicine CAS-HK Joint Lab of Biomaterials ACS Key Laboratory of Biomedical Imaging Science and System Institute of Biomedicine and Biotechnology Shenzhen Institute of Advanced Technology (SIAT) Chinese Academy of Sciences School of Pharmacy Lanzhou University University of Chinese Academy of Sciences Sino-Euro Center of Biomedicine and Health

Two thioamino acids and four fiuorinated amino acids were employed to substitute either partially or entirely the Ile2, Ser3, Ile6, and Ser7residues of Leu10-teixobactin to prepare ten analogues and the bioactivity of them was investigated. The SAR studies revealed that Ile6was tolerable for both thioamidation and fiuoridation, while Ser7was identified as the most tolerable site for thioamidation. Analogue 1a demonstrated comparable or slightly improved antibacterial activity, superior protease stability compared to Leu10-teixobactin, while not exhibiting obvious cytotoxicity against mammalian cells.

关键词： Antibacterial activity Fluorination Leu10-teixobactin Protease stability Thioamidation

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Large-scale plasma grafts voltage stabilizer on hexagonal boron nitride for improving electrical insulation and thermal conductivity of epoxy composite

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High Voltage 2023年第3期8卷 550-559页

作者： Penghao Zhang Chenguo Yao Liang Yu Xuetong Zhao Lisheng Zhao Linghan Lan Shoulong Dong State Key Laboratory of Power Transmission Equipment and System Security and New Technology School of Electrical EngineeringChongqing UniversityChongqingChina School of Energy and Power Engineering Chongqing UniversityChongqingChina

Better electrical insulation and thermal management are both urgently required in integrated power *** insulation epoxy encapsulation suffers from poor heat conduction,which has increasingly become a bottleneck of power semiconductors *** incorporating high thermal conductivity ceramics,such as hexagonal boron nitride(hBN),aluminium nitride *** epoxy promotes the thermal conductivity,the eco-friendly scalable fabrication of these composites with sufficient electrical breakdown strength remains a formidable *** voltage stabilizers are known to provide additional benefits to breakdown ***,a highthroughput approach combining plasma with roll-to-roll was *** voltage stabilizer(acetophenone)was grafted on interfaces between hBN and epoxy matrix through *** high-energy electrons are consumed by the grafted interface,which leads to the significant suppression of partial discharge in Epoxy/***,interfacial phonon scattering is repaired by ***,the epoxy composite concurrently exhibits improved breakdown strength(by 27.4%)and thermal conductivity(by 142.9%)at about 11.9 wt.%filler content,outperforming the pure ***,a promising modification strategy for mass production is provided for the encapsulation materials in various high-power-density semiconductor devices.

关键词： composite conductivity insulation

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Recent Advances in Twisted and Coiled Artificial Muscles and Their Applications

SmartBot

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SmartBot 2025年第1期1卷 121-140页

作者： Jin Sun Shijing Zhang Jie Deng Jing Li Dehong Wang Junkao Liu Yingxiang Liu State Key Laboratory of Robotics and Systems Harbin Institute of TechnologyHarbinChina

Twisted and coiled artificial muscles(TAMs)have been extensively studied in the field of soft robots due to their exceptional properties,including high energy density,large load-to-weight ratio,large deformation,low driving voltage,and low *** advancements of TAMs hold the potential for enhancing the performance and broadening their functional capabilities of soft robots,thus demonstrating substantial practical *** review outlines the recent progress in TAMs and their diverse applications in soft ***,the commonly used materials to fabricate TAMs,including inorganic fibers,composite fibers,organic fibers,and natural fibers,are discussed along with their ***,the actuation strategies are summarized across four aspects:thermal method,solvent method,electrochemical method and other non-contact ***,the configurations of TAMs are classified into single,parallel and braided *** addition,various soft robots driven by TAMs are introduced according to their functions,including manipulation,locomotion,smart textile,and ***,the research hotspots and development trends of TAMs are *** is expected that this review article can serve as a valuable reference and source of inspiration for researchers in the field of soft actuators and robots.

关键词： actuation strategies artificial muscles soft actuator soft robots

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Mechanical switches integrated sandwich triboelectric nanogenerator with high instantaneous output power 2

Mechanical switches integrated sandwich triboelectric nanoge...

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2nd International Conference on Frontier Materials, ICFM 2023

作者： Wu, Han Liao, Ruijin Wang, Jiyu State Key Laboratory of Power Transmission Equipment and System Security and New Technology Chongqing University Chongqing400044 China

Triboelectric nanogenerator (TENG) has emerged as a promising energy harvester that converts random mechanical energy in the environment into electricity to enable self-powered system construction. However, the conventional TENG exhibits a large internal resistance resulting in a low output power across external loads for practical application. In this work, the travel mechanical switches were integrated into the TENG to boost output power, where the switches were turned on and off by the periodic motion between the triboelectric layers. Moreover, the triboelectric layers of TENG were developed as contact separation sandwich structures to work with mechanical switches, allowing the device to release the co-accumulated charges from the dual triboelectric layer to yield giant instantaneous discharge. Compared to a conventional TENG, the device offers ∼2.8 times more transfer charge in one cycle and ∼106 times more instantaneous power at an external load of 500 ω, which renders the internal impedance match almost negligible. As a result, the high-power source demonstrates the ability to illuminate the commercial lamps in parallel (total power: 50 W). Such a unique TENG with high output power for low resistance load could greatly enrich the practical application fields of self-powered systems. © 2023 Published under licence by IOP Publishing Ltd.

关键词： Nanogenerators

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Enhanced thermoelectric performance of SmS by Se alloying and Y doping 4

Enhanced thermoelectric performance of SmS by Se alloying an...

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4th International Conference on Mechanical, Electronics, and Electrical and Automation Control, METMS 2024

作者： Liao, Huijun Huang, Zhengyong Jian, Li State Key Laboratory of Power Transmission Equipment & System Security and New Technology Chongqing University Chongqing400030 China

ISBN: (数字)9781510679887

ISBN: (纸本)9781510679870

Rare-earth sulfide SmS is verified to be a potential high-temperature thermoelectric material. However, the relatively high thermal conductivity limits its performance. Although Se alloying can effectively reduce the thermal conductivity, the bandgap becomes wider at the same time and more carrier concentration is required to optimize the electrical performance. A series Sm1-xYxS0.77Se0.23 (x =0, 0.03, 0.05, 0.07, 0.1) was synthesized by ball-milling combined hot-pressing. X-ray powder results showed all Y-doped samples of Sm1-xYxS0.77Se0.23 contains tiny Sm3S4 phase. When x 0.97Y0.03S0.77Se0.23 reaches 1.42 mW/m K2 at 1023 K. The thermal conductivity of Sm1-xYxS0.77Se0.23 (x © 2024 SPIE.

关键词： Carrier concentration

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Recent Developments in Metallic Degradable Micromotors for Biomedical and Environmental Remediation Applications

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Nano-Micro Letters 2024年第3期16卷 1-35页

作者： Sourav Dutta Seungmin Noh Roger Sanchis Gual Xiangzhong Chen Salvador Pané Bradley J.Nelson Hongsoo Choi Department of Robotics and Mechatronics Engineering Daegu Gyeongbuk Institute of Science and Technology(DGIST)Daegu 42988Republic of Korea DGIST‑ETH Microrobotics Research Center DGISTDaegu 42988Republic of Korea Multi‑Scale Robotics Lab Institute of Robotics and Intelligent SystemsETH Zurich8092 ZurichSwitzerland Institute of Optoelectronics State Key Laboratory of Photovoltaic Science and TechnologyShanghai Frontiers Science Research Base of Intelligent Optoelectronics and PerceptionFudan UniversityShanghai 200433People’s Republic of China

Synthetic micromotor has gained substantial attention in biomedicine and environmental ***-based degradable micromotor composed of magnesium(Mg),zinc(Zn),and iron(Fe)have promise due to their nontoxic fuel-free propulsion,favorable biocompatibility,and safe excretion of degradation products Recent advances in degradable metallic micromotor have shown their fast movement in complex biological media,efficient cargo delivery and favorable biocompatibility.A noteworthy number of degradable metal-based micromotors employ bubble propulsion,utilizing water as fuel to generate hydrogen *** novel feature has projected degradable metallic micromotors for active in vivo drug delivery *** addition,understanding the degradation mechanism of these micromotors is also a key parameter for their design and *** propulsion efficiency and life span govern the overall performance of a degradable metallic *** we review the design and recent advancements of metallic degradable ***,we describe the controlled degradation,efficient in vivo drug delivery,and built-in acid neutralization capabilities of degradable micromotors with versatile biomedical ***,we discuss micromotors’efficacy in detecting and destroying environmental ***,we address the limitations and future research directions of degradable metallic micromotors.

关键词： Magnesium Zinc Iron Biodegradable microrobot Biomedical Environmental

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32 Tb/s Real-Time C6T+L6T Unrepeated 400G QPSK Transmission over a 50.3-dB Span Loss G.652.D Fiber using Bidirectional Raman Amplification

32 Tb/s Real-Time C6T+L6T Unrepeated 400G QPSK Transmission ...

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2024 Asia Communications and Photonics Conference, ACP 2024 and International Conference on Information Photonics and Optical Communications, IPOC 2024

作者： Wu, Nishan Wang, Hongya Yu, Wenbo Shi, Hu WDM System Department State Key Laboratory of Mobile Network and Mobile Multimedia Technology ZTE Corporation Wuhan China

This paper first demonstrates a C6T+L6T 400G QPSK unrepeated transmission with the capacity of 32 Tb/s (80× 400 Gb/s) over 50.3-dB span loss G.652.D fiber, utilizing standard commercial C6T+L6T optical system and... 详细信息

ISBN: (纸本)9798350379266

关键词： Optical systems

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A Collision Avoidance Path Planning Method for 7-DOF Space Manipulator

A Collision Avoidance Path Planning Method for 7-DOF Space M...

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2023 IEEE International Conference on robotics and Biomimetics, ROBIO 2023

作者： Han, Xu Yang, Guocai Jin, Minghe Wang, Qi Harbin Institute of Technology State Key Laboratory of Robotics and System Heilong Jiang Harbin China Military Representative Office of the Equipment Department of the Aerospace Systems Department Changchun China

ISBN: (纸本)9798350325706

This paper proposes a collision avoidance path planning approach for redundant robotic arms based on the RRT algorithm. The study focuses on a 7-DOF robotic arm with an SSRMS configuration. The method involves improved RRT-based path planning in configuration space (C-space) and collision detection in Cartesian space. The results of collision detection are employed to guide the path planning process. Emulating the SSRMS configuration robotic arm, a kinematic model is established. By enhancing the RRT algorithm with the following points: probabilistic sampling towards the target configuration, guided exploration near existing tree nodes, parent node reassignment for new nodes, and the adoption of a bidirectional searching tree, the randomness of sampling is reduced and the planning process is accelerated. By continuously mapping points on the surface of the arm to both the base coordinate system and the self-collision coordinate system, collision detection and self-collision detection are performed in the Cartesian space using a combination of surface equations and projection methods. Finally, a series of simulation experiments were conducted to analyze the impact of various parameters, different obstacles and different methods on the planning process. This validation confirmed the feasibility and effectiveness of the approach. © 2023 IEEE.

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WSC-Trans: A CNN-Transformer Structure-Based 3D Multi-Structural Automatic Segmentation Model for Temporal Bone CT

WSC-Trans: A CNN-Transformer Structure-Based 3D Multi-Struct...

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2024 IEEE International Conference on Bioinformatics and Biomedicine, BIBM 2024

作者： Hua, Xin Ma, Jixin Yu, Hongjian Du, Zhijiang Zheng, Fanjun Zhang, Chen Lu, Qiaohui Zhao, Hui Harbin Institute of Technology State Key Laboratory of Robotics and System Harbin China The 6th Medical Center Chinese Pla General Hospital Senior Department of Otolaryngology Head and Neck Surgery Beijing China

ISBN: (纸本)9798350386226

Cochlear implantation is the most effective treatment for severe deafness, which requires accurate localization of temporal bone anatomy. Preoperative CT image segmentation is an essential technique to determine the location of relevant tissues in the temporal bone. However, manual segmentation is usually time-consuming and suffers from low accuracy due to the complex and small structures of these tissues in temporal bone CT. To address this issue, we proposed a CNN-Transformer structure-based 3D multi-structured model for the automatic segmentation of fine and complex tissues such as the cochlea, facial nerve, ossicles, vestibule and semicircular canal in the temporal bone CT. Our model adopts a new Transformer deformation structure, which effectively utilizes the spatial attention mechanism to capture feature dependencies, and uses the channel attention mechanism to fuse different channel semantic representations to improve segmentation accuracy. Extensive experiments on a private temporal bone CT dataset show that our model achieves higher DSS and JSS scores, and lower HD95 and ASSD scores for all targets compared with other existing segmentation methods, demonstrating its superior performance. © 2024 IEEE.

关键词： Computerized tomography

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