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An integrated flexible multifunctional sensing system for simultaneous monitoring of environment signals

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Science China Materials 2020年第12期63卷 2560-2569页

作者： Haoran Chen Zheng Lou guozhen shen State Key Laboratory for Superlattices and Microstructures Institute of SemiconductorsChinese Academy of Sciences&Center of Materials Science and Optoelectronic EngineeringUniversity of Chinese Academy of SciencesBeijing 100083China State Key Laboratory of Transducer Technology Aerospace Information Research InstituteChinese Academy of SciencesBeijing 100080China

With the rapid development of portable devices and internet of things,the requirement of system wearability and integration accelerates the investigation of flexible multifunctional *** this study,we developed an integrated flexible sensing system with four nanowire-based sensors and a Ni microwire-based temperature *** four nanowirebased sensors are three kinds of photodetectors responding to lights with different wavelengths and a gas *** to the large surface volume ratio and considerable sub wavelength effect,all the nanowire-based sensors show good sensing response and excellent linear relationship between sensitivity and *** as-fabricated flexible sensing system can simultaneously detect environmental parameters,including temperature change,light intensities from UV-Visible to near infrared regions,and harmful gas *** flexible multifunctional sensing system therefore opens up a new way for the emerging portable and wearable electronics.

关键词： flexible device nanowire multifunctional sensing system gas sensor photodetector

Characterization of atomic defects on the photoluminescence in two-dimensional materials using transmission electron microscope

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InfoMat 2019年第1期1卷 85-97页

作者： Jiayan Zhang Ye Yu Peng Wang Chen Luo Xing Wu Ziqi Sun Jianlu Wang Wei Da Hu guozhen shen Department of Electronic Engineering Shanghai Key Laboratory of Multidimensional Information ProcessingEast China Normal UniversityShanghaiChina State Key Laboratory of Infrared Physics Shanghai Institute of Technical PhysicsChinese Academy of SciencesShanghaiChina School of Chemistry Physics and Mechanical EngineeringQueensland University of TechnologyGardens PointBrisbaneAustralia State Key Laboratory for Superlattices and Microstructures Institute of SemiconductorsChinese Academy of SciencesBeijingChina

Two-dimensional material(2D)that possesses atomic thin geometry and remarkable properties is a star material for the fundamental researches and advanced *** in 2D materials are critical and fundamental to understand the chemical,physical,and optical *** arises in 2D materials owing to various physical phenomena including activator/dopant-induced luminescence and defect-related emissions,and so *** the advanced transmission electron microscopy(TEM)technologies,such as aberration correction and low voltage technologies,the morphology,chemical compositions and electronic structures of defects in 2D material could be directly characterized at the atomic *** this review,we introduce the applications of state-of-the-art TEM technologies on the studies of the role of atomic defects in the photoluminescence characteristics in 2D *** challenges in spatial and time resolution are also *** is proved that TEM is a powerful tool to pinpoint the relationship between the defects and the photoluminescence characteristics.

关键词： defects optoelectronic photoluminescence transmission electron microscopy two-dimensional material

High Seebeck Coefficient Thermally Chargeable Supercapacitor with Synergistic Effect of Multichannel lonogel Electrolyte and Ti3C2Tx MXene-Based Composite Electrode

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Energy & Environmental Materials 2024年第6期 371-381页

作者： Zhongming Chen Zhijian Du La Li Kai Jiang Di Chen guozhen shen School of Mathematics and Physics University of Science and Technology Beijing School of Integrated Circuits and Electronics Beijing Institute of Technology Faculty of Hepato-Pancreato-Biliary Surgery Chinese PLA General Hospital Institute of Hepatobiliary Surgery of Chinese PLA & Key Laboratory of Digital Hepetobiliary SurgeryChinese PLA

Thermally chargeable supercapacitors can collect low-grade heat generated by the human body and convert it into electricity as a power supply unit for wearable ***,the low Seebeck coefficient and heatto-electricity co...

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Flexible and transparent capacitive pressure sensor with patterned microstructured composite rubber dielectric for wearable touch keyboard application

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Science China Materials 2018年第12期61卷 1587-1595页

作者： Ruilong Shi Zheng Lou Shuai Chen guozhen shen State Key Laboratory of Superlattices and Microstructures Institution of Semiconductors Chinese Academy of Sciences College of Materials Science and Opto-electronic Technology University of Chinese Academy of Sciences

The development of pressure sensors with highly sensitivity, fast response and facile fabrication technique is desirable for wearable electronics. Here, we successfully fabricated a flexible transparent capacitive pressure sensor based on patterned microstructured silver nanowires(AgNWs)/polydimethylsiloxane(PDMS) composite dielectrics. Compared with the pure PDMS dielectric layer with planar structures, the patterned microstructured sensor exhibits a higher sensitivity(0.831 kPa^-1, <0.5 kPa), a lower detection limit,good stability and durability. The enhanced sensing mechanism about the conductive filler content and the patterned microstructures has also been discussed. A 5×5 sensor array was then fabricated to be used as flexible and transparent wearable touch keyboards systems. The fabricated pressure sensor has great potential in the future electronic skin area.

关键词： silver nanowires capacitive pressure sensor flexible transparent wearable electronics e-skin

Hierarchical Sb_(2)S_(3)/SnS_(2)/C heterostructure with improved performance for sodium-ion batteries

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Science China Materials 2022年第6期65卷 1443-1452页

作者： Rui Jia La Li guozhen shen Di Chen School of Mathematics and Physics University of Science and Technology BeijingBeijing 100083China State Key Laboratory for Superlattices and Microstructures Institute of SemiconductorsChinese Academy of SciencesBeijing 100083China

Metal sulfides are promising anode materials for sodium-ion batteries(SIBs)because of their high theoretical ***,they are usually limited by their poor cycling performance and rate properties due to their large volume expansion and sluggish reaction ***,Sb_(2)S_(3)/SnS_(2)/C heterostructures were fabricated by directly growing SnS_(2)nanoplates on Sb_(2)S_(3)nanorods and then coating their surface with a carbon ***-ion diffusion in several electrodes and different electrolytes was further evaluated to investigate the electrochemical performance of the *** revealed that the heterostructures greatly enhanced material stability and promoted ion and electron ***,the Sb_(2)S_(3)/SnS_(2)/C composites displayed a high reversible capacity of 642 mA h g^(−1)at a current density of 1 A g^(−1)after 600 cycles and a good rate performance of 367.3 mA h g^(−1)at 4 A g^(−1)in a NaPF_(6)-diglyme ***,Sb_(2)S_(3)/SnS_(2)/C heterostructures are promising anode materials for SIBs.

关键词： Sb_(2)S_(3)/SnS_(2)/C heterostructures anode electrolyte sodium-ion battery

Permeable liquid-metal conductor for stretchable electronics

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Science Bulletin 2021年第18期66卷 1819-1821页

作者： Zheng Lou guozhen shen Liming Ding Institute of Semiconductors(Chinese Academy of Sciences) and Center of Materials Science and Optoelectronic Engineering(University of Chinese Academy of Sciences)Beijing 100083China Center for Excellence in Nanoscience(Chinese Academy of Sciences) Key Laboratory of Nanosystem and Hierarchical Fabrication(Chinese Academy of Sciences)National Center for Nanoscience and TechnologyBeijing 100190China

The information collected from the human body is fundamental for developing the Internet of Things,and may lead to intelligent and ubiquitous health care,human–computer interface,and even advanced human ***,this will require electronic devices connected to various parts of the human body and collect signals with sufficient quality,resolution and stability.

关键词： stability. computer 液态金属

An Integrated Bifunctional Pressure‒Temperature Sensing System Fabricated on a Breathable Nanofiber and Powered by Rechargeable Zinc–Air Battery for Long‑Term Comfortable Health Care Monitoring

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Advanced Fiber Materials 2024年第4期6卷 1037-1052页

作者： Peng Wang Gengsheng Liu Guifen Sun Chuizhou Meng guozhen shen Yang Li School of Mechanical Engineering University of JinanJinan 250022China State Key Laboratory for Reliability and Intelligence of Electrical Equipment Engineering Research Center of Ministry of Education for Intelligent Rehabilitation Device and Detection TechnologyHebei Key Laboratory of Smart Sensing and Human‑Robot InteractionSchool of Mechanical EngineeringHebei University of TechnologyTianjin 300401China School of Integrated Circuits and Electronics Beijing Institute of TechnologyBeijing 100081China Shandong Provincial Key Laboratory of Network Based Intelligent Computing School of Information Science and EngineeringUniversity of JinanJinan 250022China School of Microelectronics Shandong UniversityJinan 250101China

Bulky external power supplies largely limit the continuous long-term application and miniaturization development of smart sensing ***,we fabricate a flexible and wearable integrated sensing system on an electrospun all-nanofiber *** three parts of the sensing system are all obtained by a facile ink-based direct writing *** resistive pressure sensor is realized by decorating MXene sheets on TPU ***,the resistive temperature sensor is prepared by compositing MXene sheets into poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate)(PEDOT:PSS).The thin-film zinc–air battery(ZAB)includes an interdigital zinc–air electrode that is bonded with a gel polymer *** can supply a high open-circuit voltage of 1.39 V and a large areal capacity of 18.2 mAh cm^(-2) for stable and reliable power-supplying sensing parts *** to the hydrophobic nature of TPU and open-ended micropores in the TPU nanofiber,the sensing system is waterproof,self-cleaning,and air and moisture *** application,the above-mentioned functional components are seamlessly integrated into an intelligent electronic wristband,which is comfortably worn on a human wrist to monitor pulse and body temperature in real time with continuous operation of up to 4 *** the novel design and remarkable performance,the proposed integrated all-nanofiber sensing system presents a promising solution for developing advanced multifunctional wearable electronics.

关键词： Pressure‒temperature sensor Rechargeable zinc–air battery Electrospun nanofibers Permeable electronic Integrated sensing system

二维MXenes材料在柔性光电探测器中的应用展望

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无机材料学报 2024年第2期39卷 186-194页

作者：李腊沈国震北京理工大学集成电路与电子学院北京100081 北京理工大学柔性电子器件与智造研究所北京102488

二维过渡金属碳/氮化物(MXenes)自2011年被首次报道以来,凭借其特殊的二维层状结构、优异的导电性和电化学性能在能源、催化、传感、电磁屏蔽和微波吸收等领域吸引了极大关注。近几年,随着对该材料认识的不断加深,其在光电领域的研究也... 详细信息

二维过渡金属碳/氮化物(MXenes)自2011年被首次报道以来,凭借其特殊的二维层状结构、优异的导电性和电化学性能在能源、催化、传感、电磁屏蔽和微波吸收等领域吸引了极大关注。近几年,随着对该材料认识的不断加深,其在光电领域的研究也不断深入。与其它领域不同,光电器件聚焦于延伸MXenes材料半导体性质,通过设计表面官能团、精准控制层数等来打开材料带隙,从而使其从金属性质转变为半导体性质。本文主要围绕MXenes材料的光电性质,介绍其在柔性光电子器件中的应用,系统阐述MXenes材料在透明电子器件、光电探测器、图像传感器、光电晶体管、人工神经视觉网络系统的应用前沿现状与趋势,并展望了MXenes基柔性光电器件面临的挑战以及未来发展前景。

关键词： MXene 柔性电子透明电子光电探测器带隙调控专题评述

Preface to the Special Issue on Flexible Materials and Structures for Bioengineering,Sensing,and Energy Applications

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Journal of Semiconductors 2020年第4期41卷 1-2页

作者： Yongfeng Mei Wei Gao Hui Fang Yuan Lin guozhen shen Department of Materials Science State Key Laboratory of ASIC and SystemsFudan UniversityShanghai200433China Department of Medical Engineering Division of Engineering and Applied ScienceCalifornia Institute of TechnologyPasadenaCAUSA Department of Electrical and Computer Engineering Northeastern UniversityBostonMA 02115USA State Key Laboratory of Electronic Thin films and Integrated Devices University of Electronic Science and Technology of ChinaChengdu610054China State Key Laboratory for Superlattices and Microstructures Institute of SemiconductorsChinese Academy of SciencesBeijing100083China

Human body with curved and soft interfaces requests advanced flexible materials and structures for the interaction with organs and signal collection from targets in applications such as bioengineering and diagnostic *** them,it is highly demanded to achieve creative design in flexible materials and structures with great stretchable capability for required *** this end,both inorganic and organic materials could be adopted and designed with assembly and self-assembly methods for flexible electronics and *** or flexible materials and structures inspired by nature can lead to highly conformal contacts between devices and the human *** approaches hold great potential for applications in flexible electronics,medical imaging technology and portable disease *** strategy on related sensors/actuator and energy storage/generation devices could overcome certain limitations on flexible materials engineering and thus advance the field as *** these methods would deliver a profound impact to our future intelligent society.

关键词： overcome curved engineering