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Stretchable multifunctional wearable system for real-time and on-demand thermotherapy of arthritis

microsystems and nanoengineering 2025年第1期11卷 1-12页

作者： Liu, Zehan Wang, Xihan He, Yiyang Hong, Weiqiang Sun, Peng Liu, Weitao Ye, Dong Yang, Zhuoqing Wang, Xuewen Wu, Mengxi Wang, Liding Liu, Junshan State Key Laboratory of High-performance Precision Manufacturing Dalian University of Technology Liaoning Dalian116024 China Key Laboratory for Micro/Nano Technology and System of Liaoning Province Dalian University of Technology Liaoning Dalian116024 China State Key Laboratory of Digital Manufacturing Equipment and Technology Huazhong University of Science and Technology Wuhan430074 China National Key Laboratory of Science and Technology on Micro and Nano Fabrication School of Electronic Information and Electrical Engineering Shanghai Jiao Tong University Shanghai200240 China Institute of Flexible Electronics Northwestern Polytechnical University Xi’an710072 China

Thermotherapy is a conventional and effective physiotherapy for arthritis. However, the current thermotherapy devices are often bulky and lack real-time temperature feedback and self-adjustment functions. Here, we developed a multifunctional wearable system for real-time thermotherapy of arthritic joints based on a multilayered flexible electronic device consisting of homomorphic hollow thin-film sensors and heater. The kirigami−serpentine thin-film sensors provide stretchability and rapid response to changes in environmental temperature and humidity, and the homomorphic design offers easy de-coupling of dual-modal sensing signals. Based on a closed-loop control, the thin-film Joule heater exhibits rapid and stable temperature regulation capability, with thermal response time © The Author(s) 2025.

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A Preliminary Study of the Noninvasive Remote Control system for Rat Bio-Robot

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Journal of Bionic Engineering 2010年第4期7卷 375-381页

作者： Xitian Pi~(1,2),Shuangshuang Li~1,Lin Xu~1,Hongying Liu~1,Shenshan Zhou~1,Kang Wei~1,Zhenyu Wang~1,Ziru Jia,Xiaolin Zheng~(1,2),Zhiyu Wen~2 1.Bioengineering College,Chongqing University,Chongqing 400030,P.R.China 2.key Laboratories for national Defense science and technology of Innovative micro-nano devices and system technology,Chongqing University,Chongqing 400030,P.R.China [a] Bioengineering College Chongqing University Chongqing 400030 P. R. China [b] Key Laboratories for National Defense Science Technology of Innovative Micro-Nano Devices System Technology Chongqing University Chongqing 400030 P. R. China

A system is described here that can noninvasively control the navigation of freely behaving rat via ultrasonic,epidermaland LED photic stimulators on the *** system receives commands from a remote host computer to deliver specifiedelectrical stimulations to the hearing,pain and visual senses of the rat *** results demonstrate that the three stimuliwork in groups for the rat *** can control the rat to proceed and make right and left turns with great *** verified that the rat was able to reach a setting destination in the way of cable with the help of a person through theappropriate coordination of the three *** telemetry video camera mounted on the head of the rat also achieveddistant image acquisition and helped to adjust its navigation path over a distance of 300 *** a word,the non-invasive motioncontrol navigation system is a good,stable and reliable bio-robot.

关键词： rat navigation bio-robot ultrasonic stimulator epidermal stimulator LED photic stimulator

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Design,modeling and experimental investigation of a magnetically modulated rotational energy harvester for low frequency and irregular vibration

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science China(Technological sciences) 2020年第10期63卷 2051-2062页

作者： ZHAO LinChuan ZOU HongXiang GAO QiuHua YAN Ge WU ZhiYuan LIU FengRui WEI KeXiang YANG Bin ZHANG WenMing State Key Laboratory of Mechanical System and Vibration Shanghai Jiao Tong UniversityShanghai 200240China Hunan Provincial Key Laboratory of Vehicle Power and Transmission System Hunan Institute of EngineeringXiangtan 411104China National Key Laboratory of Science and Technology on Micro/Nano Fabrication Shanghai Jiao Tong UniversityShanghai 200240China

Vibration energy harvesting is a promising approach for sustainable energy generation from ambience to meet the development of self-powered ***,we propose a novel compact non-resonant magnetically modulated rotational energy harvester(MMR-EH)for low frequency and irregular *** the rational arrangement of multiple magnetic fields in space,a ring route with low potential energy is established.A movable magnet can be non-contact modulated by the magnetic force to move along the ring route under irregular vibration,which is instrumental in electromechanical energy conversion.A dynamic model of the MMR-EH is developed based on the energy method and verified *** effects of key parameters on the magnetically modulated route are *** simulation and experimental results demonstrate that the MMR-EH can effectively harvest the energy from ultra-low frequency(3 Hz)and irregular *** a reciprocating vibration frequency of 10 Hz and an amplitude of 20 mm,the harvester can produce an average power of 0.29 mW.

关键词： energy harvesting vibration low frequency magnetically modulated route

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Stress control of silicon nitride films deposited by plasma enhanced chemical vapor deposition

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Optoelectronics Letters 2016年第4期12卷 285-289页

作者：李东玲冯小飞温志渝尚正国佘引 National Key Laboratory of Fundamental Science of Novel Micro/Nano Device and System Technology Chongqing University Chongqing 400030 China Key Laboratory of Optoelectronic Technology and System of the Education Ministry of China Chongqing University Chongqing 400030 China No.24 Reaearch Institute of China Electronics Technology Group Corporation Chongqing 400060 China

Stress controllable silicon nitride(Si Nx) films deposited by plasma enhanced chemical vapor deposition(PECVD) are reported. Low stress Si Nx films were deposited in both high frequency(HF) mode and dual frequency(HF/LF) mode. By optimizing process parameters, stress free(-0.27 MPa) Si Nx films were obtained with the deposition rate of 45.5 nm/min and the refractive index of 2.06. Furthermore, at HF/LF mode, the stress is significantly influenced by LF ratio and LF power, and can be controlled to be 10 MPa with the LF ratio of 17% and LF power of 150 W. However, LF power has a little effect on the deposition rate due to the interaction between HF power and LF power. The deposited Si Nx films have good mechanical and optical properties, low deposition temperature and controllable stress, and can be widely used in integrated circuit(IC), micro-electro-mechanical systems(MEMS) and bio-MEMS.

关键词： Deposition Deposition rates Integrated circuits MEMS Nitrides Optical properties Plasma CVD Refractive index Silicon nitride Stresses Vapor deposition

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Nonlinear Chiroptical Effect in Refractory Plasmonic Molybdenum Metasurface: Opening an Avenue for Nonlinear Chiroptics

arXiv

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arXiv 2025年

作者： Yu, Peng Liu, Tianji Zhu, Yuxuan Lin, Feng Yue, Shuai Takahara, Junichi Ding, Tao Xu, Hongxing Govorov, Alexander Wang, Zhiming Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of China Chengdu610054 China Shimmer Center Tianfu Jiangxi Laboratory Chengdu641419 China GPL Photonics Laboratory State Key Laboratory of Luminescence Science and Technology Changchun Institute of Optics Fine Mechanics and Physics Chinese Academy of Sciences Changchun130033 China University of Chinese Academy of Sciences Beijing100039 China National Center for International Research on Photoelectric and Energy Materials School of Materials and Energy Yunnan University Yunnan Kunming650091 China CAS Key Laboratory of Standardization and Measurement for Nanotechnology National Center for Nanoscience and Technology Beijing100190 China Graduate School of Engineering Osaka University 2-1 Yamadaoka Suita Osaka565-0871 Japan Photonics Center Graduate School of Engineering Osaka University 2-1 Yamadaoka Suita Osaka565-0871 Japan Key Laboratory of Artificial Micro Nano Structure of Ministry of Education School of Physics and Technology Wuhan University Wuhan430072 China School of Physics and Technology Center for Nanoscience and Nanotechnology Wuhan University Wuhan430072 China Department of Physics and Astronomy and Nanoscale and Quantum Phenomena Institute Ohio University AthensOH45701 United States

Nonlinear chiral optical responses offer significantly enhanced selectivity and sensitivity to chiral signals compared to their linear counterparts, making them highly promising for molecular detection and information processing applications. However, the high-intensity laser required for nonlinear optical processes induces substantial thermal effects, compromising the stability and sustainability of nonlinear chiroptical responses. Here, we present a refractory chiral Mo metasurface that demonstrates significant chiroptical effect even under extreme conditions, withstanding temperatures up to 1100 ℃ and laser intensities above 12 GW/cm2. The absorptive chiral metasurface shows evidence of giant nonlinear chiroptical effects, including chiral third harmonic generation, chiral saturated absorption, and chiral reverse saturable absorption. We finally demonstrate proof of concept circular polarized light limiter based on the refractory chiral Mo metasurface and paves the way for nonlinear chiral sensing, nonlinear hot electron generation, and XOR gate of the all-optical full-adder, showcasing the potential of refractory chiral Mo metasurfaces in overcoming the limitations of traditional chiral plasmonic materials. © 2025, CC BY.

关键词： Saturable absorbers

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Pairing superfluidity in spin-orbit coupled ultracold Fermi gases

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science China(Physics,Mechanics & Astronomy) 2015年第1期58卷 1-11页

作者： YI Wei ZHANG Wei CUI XiaoLing Key Laboratory of Quantum Information University of Science and Technology of China Synergetic Innovation Center of Quantum Information and Quantum Physics University of Science and Technology of China Department of Physics Renmin University of China Beijing Key Laboratory of Opto-electronic Functional Materials and Micro-nano Devices Beijing National Laboratory for Condensed Matter Physics Institute of Physics Chinese Academy of Sciences

We review some recent progresses on the study of ultracold Fermi gases with synthetic spin-orbit *** particular,we focus on the pairing superfluidity in these systems at zero *** studies have shown that different forms of spin-orbit coupling in various spatial dimensions can lead to a wealth of novel pairing superfluidity.A common theme of these variations is the emergence of new pairing mechanisms which are direct results of spin-orbit-coupling-modified single-particle dispersion *** different configurations can give rise to single-particle dispersion spectra with drastic differences in symmetry,spin dependence and low-energy density of states,spin-orbit coupling is potentially a powerful tool of quantum control,which,when combined with other available control schemes in ultracold atomic gases,will enable us to engineer novel states of matter.

关键词： spin-orbit coupling ultracold Fermi gas superconductivity topological superfluid

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Effect of SiO_(2)introduction on luminescence properties of LuAG:Mn^(2+) phosphors

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Journal of Rare Earths 2022年第2期40卷 253-259,I0003页

作者： Chenyao Zhao Hui Lin Dawei Zhang Ruijin Hong Shengming Zhou Engineering Research Center of Optical Instrument and System Ministry of Education and Shanghai Key Lab of Modem Optical SystemUniversity of Shanghai for Science and TechnologyShanghai 200093China Laboratory of Micro-Nano Optoelectronic Materials and Devices Key Laboratory of Materials for High-Power LaserShanghai Institute of Optics and Fine MechanicsChinese Academy of SciencesShanghai 201800China

Mn^(2+)doped LuAG phosphors with different contents of Si^(4+)ions were synthesized via the solid-state reaction method and the effects of Si^(4+)doping on the crystal structure and luminescence properties of phosphors were *** patterns of all phosphors exhibit a pure phase but with different extents of *** to the 4 T1→6 A1 transition of Mn^(2+),the LuAG:Mn^(2+),Si^(4+)phosphors exhibit a broad emission band with an emission peak at 582 ***,the introduction of Si^(4+)not only improves the emission intensity but also induces a red-shift with the emission peak from 582 to 612 nm and the spectra broadening with the full width at half maximum value from 64 to 74 nm,which results from the decrease of bond length between O2-anions and Mn^(2+)cations and the re-absorption of Mn^(2+)-Mn^(2+)*** content of Si^(4+)replacement can weaken thermal quenching of Mn^(2+).Thus,via regulating the content of Si,the Mn^(2+),Si^(4+)co-doped LuAG phosphor with low correlated color temperature is a candidate for warm wLEDs.

关键词： Lu_(3)Al_(5)O_(12) Mn^(2+)luminescence Warm white LEDs Transition metal luminescence Rare earths

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Preparation and Electrochemical Characteristics of Three-dimensional Manganese Oxide micro-supercapacitor Electrode

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Chinese Journal of Chemical Physics 2012年第2期25卷 209-213,I0004页

作者： Chun-ming Wen Zhi-yu Wen Zheng You Xiao-feng Wang Key Laboratory of Fundamental Science on Micro/Nano-Device and System Technology Chongqing UniversityChongqing 400030China Microsystem Research Center Chongqing UniversityChongqing 400030China Department of Precision Instruments and Mechanics Tsinghua UniversityBeijing 100084China

In order to increase the electrode surface area and enhance the charge storage capacity, we study the micro electro mechanical system technology to fabricate three-dimensional high aspect ratio micro-electrode structure based on glass. The anodic constant potential method is employed to deposit manganese oxide as electroactive substances on the micro-electrode surface. Cyclic voltammetry and constant current charge-discharge method are both used to prepare electrode electrochemical performance testing, with a two-dimensional electrode without structure for comparison. Experimental results show that three-dimensional elec- trode structure can effectively enhance the charge storage capacity. At 1.0 mA/cm2 charge- discharge density, the three-dimensional electrode shows a capacitance of 17.88 mF/cm2, seven times higher than the two-dimensional electrode.

关键词： micro-supercapacitor micro electro mechanical system Three-dimensional electrode Manganese oxide

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Preparation and characterization of three-dimensional micro-electrode for micro-supercapacitor based on inductively coupled plasma reactive etching technology

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science China(Technological sciences) 2012年第7期55卷 2013-2018页

作者： WEN ChunMing WEN ZhiYu YOU Zheng WANG XiaoFeng Key Laboratory of Fundamental Science on Micro/Nano-Device and System Technology Chongqing UniversityChongqing 400030China Microsystem Research Center Chongqing UniversityChongqing 400030China Department of Precision Instruments and Mechanics Tsinghua UniversityBeijing 100084China

The capacity of supercapacitor charge storage depends on the size of the electrode surface area and the active material on the *** enhance the charge storage capacity with a reduced volume,silicon is used as the electrode material,and three-dimensional electrode structure is prepared to increase the electrode surface area on the footprint area by inductively coupled plasma reactive etching(ICP) *** anodic constant current deposition method is employed to deposit manganese oxide on the electrode surface as the electroactive *** comparison,samples without slot are prepared with a two-dimensional *** Electron microscopy(SEM) and Energy Dispersive Spectroscopy(EDS) are used to characterize the surface morphology of the electrode structure and the deposited electroactive *** properties of the electrode are characterized by the cyclic voltammetry(CV) and the constant current charge-discharge *** results show that our approach can effectively increase the electrode surface area with more electroactive substances,and hence can increase storage capacity of the micro-supercapacitor.

关键词： micro Electro Mechanical system（MEMS） micro-supercapacitors three-dimensional electrode inductively coupled plasma reactive etching manganese oxide silicon

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Flexible and transparent triboelectric nanogenerator based on high performance well-ordered porous PDMS dielectric film

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nano Research 2016年第12期9卷 3714-3724页

作者： Xianming He Xiaojing Mu Quan Wen Zhiyu Wen Jun Yang Chenguo Hu Haofei Shi Department of Applied Physics Chongqing University Chongqing 400044 China Key Laboratory of Fundamental Science of Micro/Nano-Device and System Technology Chongqing University Chongqing 400044 China Microsystem Research Center Chongqing University Chongqing 400044 China Key Laboratory of Multi-Scale Manufacturing Technology Chongqing Institute of Green and Intelligent Technology Chinese Academy of Sciences Chongqing 400714 China

A flexible and transparent triboelectric nanogenerator （FT-TENG） has great potential for application in self-powered biosensor systems, electronic skin and wearable electronic devices. However, improving the output performance with little damage to its optical properties is challenging. Herein, we have developed an FT-TENG that has a well-ordered nest-like porous polydimethylsiloxane （NP-PDMS） film and graphene transparent electrodes. The NP-PDMS film with ordered pores is fabricated by hydrochloric acid etching of 500 nm sized ZnO spheres made of aggregated nanoparticles, having a light transmittance of 81.8% and a water contact angle of 118.62°. The FT-TENG based on the NP-PDMS film with a porosity of 12%, gives a maximum output of 271 V and 7.8 μA, which are respectively, 3.7 and 2.1-fold of those of a TENG with a flat PDMS film. The peak output power reaches 0.39 mW with a load resistance of 9.01 MΩ. The dielectric constant and effective thickness of the NP-PDMS film and the capacitance and charge transfer of the FT-TENG are systematically investigated. This work provides a novel and effective method to enhance the performance of FT-TENGs with little damage to their optical properties.

关键词： porouspolydimethylsiloxane（PDMS） surface charge density nanogenerator flexibility transparent electrode

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