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第七届中国储能与动力电池及其关键材料学术研讨与技术交流会

作者： Yuxin Zhang Ming Huang Fei Li Min Kuang Shi Jin Zhu College of Materials Science and Engineering Chongqing University National Key Laboratory of Fundamental Science of Micro/Nano-Devices and System Technology Chongqing University

We would like to introduce the self-assembly of MnO nanostructures with controllable morphology for electrochemical supercapacitor,including mesoporous MnO nanotubes and their arrays,carbon-MnO coaxial nanotubes,CuO/M... 详细信息

关键词： MnO Self-assembled MnO2 nanostructures for electrochemical capacitive energy storage

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Facile assembly of flexible,stretchable and attachable symmetric microsupercapacitors with wide working voltage windows and favorable durability

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microsystems & nanoengineering 2024年第4期10卷 297-304页

作者： Xiangguang Han Xiaoyu Wu Libo Zhao Min Li Chen Jia Zhikang Li Jiaqi Xie Guoxi Luo Ping Yang Rabah Boukherroub Yurdanur Türker Mert UmutÖzkaynak Koray Bahadır Dönmez State Key Laboratory for Manufacturing Systems Engineering International Joint Laboratory for Micro/Nano Manufacturing and Measurement TechnologiesXi’an Jiaotong University(Yantai)Research Institute for Intelligent Sensing Technology and SystemXi’an Jiaotong UniversityXi’an 710049China School of Instrument Science and Technology Xi’an Jiaotong UniversityXi’an 710049China Shandong Laboratory of Advanced Materials and Green Manufacturing at Yantai Yantai 264000China School of Mechanical Engineering Xi’an Jiaotong UniversityXi’anShaanxi 710049China Chongqing Key Laboratory of Micro-Nano Systems and Intelligent Sensing Chongqing Academician WorkstationChongqing 2011 Collaborative Innovation Center of Micro/Nano Sensing and Intelligent Ecological Internet of ThingsChongqing Technology and Business UniversityNan’an DistrictChongqing 400067China Univ.Lille CNRSUniv.Polytechnique Hauts-de-FranceUMR 8520-IEMNF-59000 LilleFrance Sabanci University Nanotechnology Research and Application Center(SUNUM) IstanbulTurkey Department of Materials Science and Engineering Istanbul Technical UniversityIstanbulTurkey

With the increasing development of intelligent robots and wearable electronics,the demand for high-performance flexible energy storage devices is drastically *** this study,flexible symmetric microsupercapacitors(MSCs)that could operate in a wide working voltage window were developed by combining laser-direct-writing graphene(LG)electrodes with a phosphoric acid-nonionic surfactant liquid crystal(PA-NI LC)gel *** increase the flexibility and enhance the conformal ability of the MSC devices to anisotropic surfaces,after the interdigitated LG formed on the polyimide(PI)film surface,the devices were further transferred onto a flexible,stretchable and transparent polydimethylsiloxane(PDMS)substrate;this substrate displayed favorable flexibility and mechanical characteristics in the bending ***,the electrochemical performances of the symmetric MSCs with various electrode widths(300,400,500 and 600μm)were *** findings revealed that symmetric MSC devices could operate in a large voltage range(0–1.5 V);additionally,the device with a 300μm electrode width(MSC-300)exhibited the largest areal capacitance of 2.3 mF cm^(−2)at 0.07 mA cm^(−2)and an areal(volumetric)energy density of 0.72μWh cm−2(0.36 mWh cm^(−3))at 55.07μWcm−2(27.54mWcm−3),along with favorable mechanical and cycling *** charging for~20 s,two MSC-300 devices connected in series could supply energy to a calculator to operate for~130 s,showing its practical application potential as an energy storage ***,the device displayed favorable reversibility,stability and *** 12 months of aging in air at room temperature,its electrochemical performance was not altered,and after charging-discharging measurements for 5000 cycles at 0.07 mA cm^(−2),~93.6%of the areal capacitance was still retained;these results demonstrated its practical long-term application potential as an energy storage device.

关键词： cycling durability electrode

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Self-assembled MnO2 nanostructures for electrochemical capacitive energy storage

Self-assembled MnO2 nanostructures for electrochemical capac...

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第二届海峡两岸功能材料科技与产业峰会（2015）

We would like to introduce the self-assembly of Mn O2 nanostructures with controllable morphology for electrochemical supercapacitor,including mesoporous Mn O2 nanotubes and their arrays,carbon-Mn O2 coaxial nanotubes,Cu O/Mn O2,Mn O2/diatomite,Ti O2/Mn O2,Co3O4-Sn O2/Mn O2,Mn O2-Ni foam,Mn O2-CNTs-Ni foam and Mn O2-Co3O4-Ni foam nanostructures[1-11].Noteworthily,it is the first time to synthesize

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Demonstration of multi-beam microwave heating based on the wave confinement of hexagonal photonic crystal multilayered cavity

Demonstration of multi-beam microwave heating based on the w...

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作者： Yogesh, N. Yu, Quanqiang Ouyang, Zhengbiao Solid State Photonics Laboratory THz Technical Research Center Shenzhen Key Laboratory of Micro-Nano Photonic Information Technology Key Laboratory of Optoelectronic Device and Systems of Ministry of Education Guangdong Province College of Electronic Science and Technology Shenzhen University Shenzhen518060 China

ISBN: (纸本)9781934142301

Multi-beam microwave heating based on the wave confinement of hexagonal photonic crystal multilayered cavity is reported. The proposed hexagonal cavity is formed by alternative layers of alumina (Al2O3) and air with the thickness of 0.3a and 0.7a respectively, where 'a' is the lattice constant. The 17 layer cavity is normally excited with six microwave beams with the peak strength of 1000 V/m. The center of the cavity is loaded with a low loss dielectric and electromagnetic thermal co-simulations are carried out to study the heat transfer due to multi-beam confinement. It is found that characteristic modes of the proposed cavity show the temperature raising rate of 0.77°C/s, 190.26°C/s and 29.52°C/s at 13.855 GHz, 14.54164 GHz, and 14.78175 GHz respectively. This feature is highly useful for arriving the higher temperatures and the creation of plasmas. Particularly, it is anticipated that the proper scaling of the proposed cavity at laser length-scales provide an excellent source of laser beam heating in industrial welding and green photonic solutions.

关键词： microwave heating

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THz twist polarizer based on supramolecular fermat's spiral chiral metamaterial

THz twist polarizer based on supramolecular fermat's spiral ...

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ISBN: (纸本)9781934142301

A THz twist polarizer formed by supramolecular Fermat's spiral chiral metamaterial (SFSCMM) is reported. Twist polarizers (TPs) are the 90° polarization rotators, in which transverse magnetic linear polarization is converted into transverse electric linear polarization and vice versa. The proposed SFSCMM consists of twisted bilayered supramolecular Fermat's spiral patterns, in which each layer is chiral in nature. The design is implemented in polyimide substrate using silver as a metal. Full-wave simulations demonstrated its function of TP, where the SFSCMM shows the zero-point ellipticity with the polarization rotation angle of 89.49° at 7.765 THz. The proposed SFSCMM has a dimension of λ/1.38 × λ/1.38 × λ/10.3 at the operating wavelength and can be fabricated through standard layer-by-layer method for the realization of optical logic gates and THz switches.

关键词： Optical switches

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Design of power management chip for piezoelectric energy harvesting

Design of power management chip for piezoelectric energy har...

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IEEE Conference on Electron devices and Solid-State Circuits

作者： Hua Yu Shibo Yang Wei Wang College of Optoelectronic Engineering Chongqing University Chongqing China Ministry of Education of China The Key Laboratory for Optoelectronic Technology & Systems Chongqing China National Key Laboratory of Fundamental Science of Micro/Nano-Device and System Technology Chongqing China

ISBN: (纸本)9781479923366

The paper proposes a complete energy harvesting solution integrated with a low-loss AC/DC rectifier and a high efficiency low dropout regulator (LDO) optimized for micro piezoelectric energy harvester. The AC/DC module converts AC into DC and then supplies power for the following LDO circuit module, through which the whole chip can obtain a stable 3.3V output voltage. A dynamic compensation mechanism is presented to improve the loop stability of LDO, which is easier to achieve high phase margin than traditional compensation strategy. The simulation results of LDO indicate that the typical dropout is 0.4mV with 1mA load current and 61mV with 150mA load current respectively, and the typical voltage line regulation error is 0.025%/V. In addition, the typical load regulation error was 0.00018%. The results demonstrate that the proposed chip meets the requirements of power supply for wireless sensor node (WSN).

关键词： Photonic band gap

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Space high-accuracy intelligence payload system with integrated attitude and position determination

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Instrumentation 2015年第1期2卷 3-16页

作者： LI Jin XING Fei SUN Ting LIU Zengyi YOU Zheng Department of precision instrument Tsinghua University State Key Laboratory of Precision Measurement Technology and Instruments Collaborative Innovation Center for Micro / Nano Fabrication Device and System

recently,the requirements for space high resolution and high accuracy earth observation payloads are more urgent in many ***,traditional satellites mainly use the separation model of platform and *** precision of platform was unable to fulfill the requirements of high-precision imaging of *** addition,because traditional satellites mainly use the rigid connection between platform and payload,the precision of payload strongly depends on *** make satellite development and requirements increasingly *** solve these disadvantages,in this paper,we introduce a Space High-accuracy integrated Intelligence Payload(SHIP) system with real-time attitude and position *** can complete real time autonomous high accuracy attitude and position determination,high resolution remote sensing imaging,high-accuracy target position based on image,multi-mode motion imaging and target identification,tracking,self-recovery function of on orbit image,self-determination function of attitude and position,and so on.

关键词： earth observation intelligence payload optical remote sensors.

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Design and simulation of corrugated diaphragm applied to the MEMS fiber optic pressure sensor

Design and simulation of corrugated diaphragm applied to the...

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IEEE International Conference on nano/micro Engineered and Molecular systems (NEMS)

作者： Yiming Gui Yangxi Zhang Guandong Liu Yilong Hao Chengchen Gao Institute of Microelectronics Peking University China National Key Laboratory of Science and Technology on Micro/Nano Fabrication China Innovation Center for Micro-Nano-electronics and Integrated System China Device and System Collaborative Innovation Center for Micro/Nano Fabrication Beijing China

ISBN: (纸本)9781509019489

In this paper, we propose a corrugated diaphragm applied to the fiber optic pressure sensor which needs a wide sensing range and a large deflection. The corrugated diaphragm can effectively improve the sensitivity of the sensor has been proved by ANSYS simulation. The stress concentration is weakened after the silicon is chamfered into corrugated diaphragm by isotropic etching process. The sensitivity of the corrugated diaphragm can reach to 0.44μ m/MPa which is two times larger than that of the same size planar diaphragm. The maximum sensing stress is up to 14MPa.

关键词： Stress Pressure sensors Sensitivity Optical fibers micromechanical devices Silicon

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Highly sekective and sensitice colorimetric liquid sensor array for pesticides detection

Highly sekective and sensitice colorimetric liquid sensor ar...

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The 6th International Conference on nanoscience & technology, China 2015

作者： Danqun Huo Liang Dong Hailong Jiang Huixiang Wu Huanbao Fa Mei Yang Yi Ma Shiying Zou Changjun Hou Key Laboratory of Biorheology Science and Technology Ministry of EducationCollege of BioengineeringChongqing University National Key Laboratory of Fundamental Science of Micro/Nano-Device and System Technology Chongqing University College of Chemistry and Chemical Engineering Chongqing University Sichuan University of Science & Engineering

Pesticides were widely used to boost food production which poses a huge threat to human health and the environment. In the past several decades, numerous detection system, such as liquid chromatography, gas chromatography, capillary electrophoresis had been developed for the pesticides analyses. Although these methods offer high accuracy, better repeatability and high efficiency, they are costly, time-consuming and need professionals. Therefore, simple and convenient methods for detection of pesticides are still of significant need. The Au NPs and GSH-Au NPs were synthesized in this paper aiming to develop a new strategy for rapid determination ofpesticides. Herein, we designed a gold nanoparticles(Au NPs) and glutathione-gold nanoparticles(GSH-Au NPs) sensor array for the determination of 6 pesticides based on cross-response between sensor dots and analytes. Au NPs and GSH-Au NPs yield a different response to 6 pesticides with similar structures under different p H conditions. Based on this, a new liquid arrays with 8 sensors was constructed for identification of 6 pesticides. Color of sensor dots were recorded by scanner before and after the addition of pesticides and differential spectra were obtained subsequently and analyzed by principal component analysis(PCA), hierarchical clustering analysis(HCA) and linear discriminant analysis(LDA). The experimental results exhibit good recognition performance for 6 pesticides with 100% accuracy. Then the array is optimized, the results show that A and E still were the main contributors for identification of 6 pesticides. Liquid array was used in actual samples of the jialing river water and tap water and similar results were obtained. The result shows that the array has certain feasibility in the practical application.

关键词： gold nanoparticles,sensor array,pesticides detection

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Direct observation of chaotic resonances in optical microcavities

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Light(science & Applications) 2021年第8期10卷 1455-1461页

作者： Shuai Wang Shuai Liu Yilin Liu Shumin Xiao Zi Wang Yubin Fan Jiecai Han Li Ge Qinghai Song Ministry of Industry and Information Technology Key Lab of Micro-Nano Optoelectronic Information System Harbin Institute of Technology(Shenzhen)Shenzhen 518055China National Key Laboratory of Science and Technology on Advanced Composites in Special Environments Harbin Institute of TechnologyHarbin 150080China. Collaborative Innovation Center of Extreme Optics Shanxi UniversityTaiyuan 030006China. Department of Physics and Astronomy College of Staten IslandCUNYStaten IslandNY 10314USA. The Graduate Center CUNYNew YorkNY 10016USA

Optical microcavities play a significant role in the study of classical and quantum *** date,most experimental explorations of their internal wave dynamics have focused on the properties of their inputs and outputs,without directly interrogating the dynamics and the associated mode patterns *** a result,this key information is rarely retrieved with certainty,which significantly restricts the verification and understanding of the actual chaotic *** we demonstrate a simple and robust approach to directly and rapidly map the internal mode patterns in chaotic *** introducing a local index perturbation through a pump laser,we report a spectral response of optical microcavities that is proportional to the internal field *** this technique,chaotic modes with staggered mode spacings can be ***,a complete chaos assisted tunneling(CAT)and its time-reversed process are experimentally verified in the optical domain with unprecedented certainty.

关键词： motion chaotic reversed

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