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| 1 | Miura-origami-inspired electret/triboelectric power generator for wearable energy harvesting with water-proof capability显示文摘One of the critical issues for electret/triboelectric devices is the poor charge viability and stability in humid environments.Herein,we propose a new origami-inspired“W-tube”-shaped triboelectric nanogenerator(W-TENG)with two thin-film electrets folded based on Miura-origami.The Miura-origami fold is capable of transforming flat materials with large surface areas into reduced and compressed complex 3D structures with parallelogram tessellations.The triboelectric power generation components can thus be hermetically sealed inside the“W-tube”to avoid contact with the external humid environment.Furthermore,the elastic nature of the Miura-origami fold endows the proposed W-TENG device with excellent deformability,flexibility,and stretchability.Therefore,it is capable of harvesting kinetic energy from various directions and forms of movement,including horizontal pressing,vertical tapping,and lateral bending.The compact,light weight,and self-rebounding properties of the origami structure also make it convenient for integration into wearable devices.Various parameters of the W-TENG are intensively investigated,including the number of power generation units,original height of the device,acceleration magnitude,excitation direction,and water-proof capability.Triggered by hand tapping impulse excitation in the horizontal and vertical directions,the instantaneous open-circuit voltages can reach 791 V and 116 V with remarkable optimum powers of 691μW at 50MΩand 220μW at 35 MΩ,respectively.The outcomes of this work demonstrate the fusion of the ancient art of origami,material science,and energy conversion techniques to realize flexible,multifunctional,and water-proof TENG devices. | Kai Tao Haiping Yi Yang Yang Lihua Tang Zhaoshu Yang Jin Wu Honglong Chang Weizheng Yuan | 2020 | Microsystems & Nanoengineering2020，6，1： | 6 |
| 2 | ePlant for quantitative and predictive plant science research in the big data era --Lay the foundation for the future model guided crop breeding, engineering and agronomy显示文摘背景在着急地在最近的十年统一陆地区域基础上的庄稼产量的全球人口,气候变化和停滞的增加打电话让一条新途径支持当代的庄稼改进。ePlant 与机械学的细节的高水平是植物生长和开发的一个数学模型遇见这挑战。结果 ePlant 集成为过程发生在开发的模块急速地不同时间( 108106 秒)并且空间( 101010 米)可伸缩,合并多样的物理、生物物理、生物化学的过程包括基因规定,新陈代谢的反应,底层运输和散开,精力吸收,转移和变换,机关形态发生,植物环境相互作用,等等。单个模块用一条 divide-and-conquer 途径被开发;在不同时间、空间的规模的模块进一步通过转移 variables.We 是综合的基于信息几何学建议一个监督学习过程为两知识发现和模型扩展或进展联合模型和数据。我们最后讨论一个全球协会的最近的形成,它在植物生物学包括专家,计算机科学,统计,农学, phenomics ,等等试图由支持模型作为一个社区努力被开发而不是在哪儿的一个新模型开发范例帮助 ePlant 或它的等价物的开发和应用程序主要由单个实验室努力开车。结论 ePlant 支持量、预兆的植物科学研究的一个主要研究工具,将在未来模型起一个关键作用指导庄稼工程,繁殖并且农学。 | Yi Xiao Tiangen Chang Qingfeng Song Shuyue Wang Danny Tholen Yu Wang Changpeng xin Guangyong Zheng Honglong Zhao Xin-Guang Zhu | 2017 | Frontiers of Electrical and Electronic Engineering in China2017，5，3： | 3 |
| 3 | Chip-based ion chromatography (chip-IC) with a sensitive five-electrode conductivity detector for the simultaneous detection of multiple ions in drinking water显示文摘The emerging need for accurate,efficient,inexpensive,and multiparameter monitoring of water quality has led to interest in the miniaturization of benchtop chromatography systems.This paper reports a chip-based ion chromatography(chip-IC)system in which the microvalves,sample channel,packed column,and conductivity detector are all integrated on a polymethylmethacrylate(PMMA)chip.A laser-based bonding technique was developed to guarantee simultaneous robust sealing between the homogeneous and heterogeneous interfaces.A five-electrode-based conductivity detector was presented to improve the sensitivity for nonsuppressed anion detection.Common anions(F^(−),Cl^(−),NO_(3)^(−),and SO _(4)^(2−))were separated in less than 8 min,and a detection limit(LOD)of 0.6 mg L^(−1) was achieved for SO_(4)^(2−).Tap water was also analyzed using the proposed chip-IC system,and the relative deviations of the quantified concentration were less than 10%when compared with that a commercial IC system. | Xiaoping Li Honglong Chang | 2020 | Microsystems & Nanoengineering2020，6，1： | 2 |
| 4 | Characterization of forced localization of disordered weakly coupled micromechanical resonators显示文摘The mode localization phenomenon of disordered weakly coupled resonators(WCRs)is being used as a novel transduction scheme to further enhance the sensitivity of micromechanical resonant sensors.In this paper,two novel characteristics of mode localization are described.First,we found that the anti-resonance loci behave as a linear function of the stiffness perturbation.The antiresonance behavior can be regarded as a new manifestation of mode localization in the frequency domain,and mode localization occurs at a deeper level as the anti-resonance approaches closer to the resonance.The anti-resonance loci can be used to identify the symmetry of the WCRs and the locations of the perturbation.Second,by comparing the forced localization responses of the WCRs under both the single-resonator-driven(SRD)scheme and the double-resonator-driven(DRD)scheme,we demonstrated that the DRD scheme extends the linear measurement scale while sacrificing a certain amount of sensitivity.We also demonstrated experimentally that the amplitude ratio-based sensitivity under the DRD scheme is approximately an order of magnitude lower than that under the SRD scheme,that is,the amplitude ratio-based sensitivity is−70.44%(Nm^(−1))^(−1) under the DRD scheme,while it is−785.6%(Nm^(−)1)^(−1) under the SRD scheme.These characteristics of mode localization are valuable for the design and control of WCR-based sensors. | Hemin Zhang Honglong Chang Weizheng Yuan | 2017 | Microsystems & Nanoengineering2017，3，1： | 2 |
| 5 | Recent advances in wireless epicortical and intracortical neuronal recording systems显示文摘An implantable brain-computer interface(BCI)has proven to be effective in the field of sensory and motor function restoration and in the treatment of neurological disorders.Using a BCI recording system,we can transform current methods of human interaction with machines and the environment,especially to help those with cognitive and mobility disabilities regain mobility and reintegrate into society.However,most reported work has focused on a simple aspect of the whole system,such as electrodes,circuits,or data transmission,and only a very small percentage of systems are wireless.A miniature,lightweight,wireless,implantable microsystem is key to realizing long-term,real-time,and stable monitoring on freely moving animals or humans in their natural conditions.Here,we summarize typical wireless recording systems,from recording electrodes,processing chips and controllers,wireless data transmission,and power supply to the system-level package for either epicortical electrocorticogram(ECoG)or intracortical local field potentials(LFPs)/spike acquisition,developed in recent years.Finally,we conclude with our vision of challenges in next-generation wireless neuronal recording systems for chronic and safe applications. | Bowen JI Zekai LIANG Xichen YUAN Honglai XU Minghao WANG Erwei YIN Zhejun GUO Longchun WANG Yuhao ZHOU Huicheng FENG Honglong CHANG Jingquan LIU | 2022 | Science China(Information Sciences)2022，65，4： | 2 |
| 6 | An integrated MESM gyroscope array with higher accuracy output显示文摘 | Chang Honglong Xue Liang QinWei | 2008 | Sensor2008，，8： | 1 |
| 7 | An integrated MEMS gyroscope array with higher accuracy output 显示文摘 | Chang Honglong Xue Liang Qin Wei | 2008 | Sensors2008，，8： | 1 |
| 8 | An integrated MEMS gyroscope array with higher accuracy output显示文摘 | Chang Honglong Xue Liang Qin Wei | 2008 | Sensors2008，8，： | 1 |
| 9 | Integrated behavior simulation and verification for a MEMS vibratory gyroscope using parametric model order reduction 显示文摘 | Chang Honglong Zhang Yafei Xie Jianbing | 2010 | Microelectromechanical Systems2010，19，2： | 1 |
| 10 | Signal processing of mems gyroscope arrays to improve accuracy using a l st order markov for rate signal model- ing显示文摘 | Jiang Chengyu Xue Liang Chang Honglong | 2012 | Sensors2012，12，2： | 1 |
| 11 | Application Application of an Optimization Methodology for Multidisciplinary System Design of Microgyroscopes 显示文摘 | Yuan Weizheng Chang Honglong Li Weijian | 2006 | Microsystem Technology2006，12，： | 1 |
| 12 | Design and Fabrication of MEMS Gyroscopes on the Silicon-on-insulator Substrate with Decoupled Oscillation Modes显示文摘The mode coupling is a major factor to affect the precision of the micro electromechanical systems(MEMS) gyroscope. Currently, many MEMS gyroscopes with separate oscillation modes for drive and detection have been developed to decrease the mode coupling, but the gyroscope accuracy can not satisfy the high-precision demand well. Therefore, high performance decoupled MEMS gyroscopes is still a hot topic at present. An innovative design scheme for a MEMS gyroscope is designed, and in this design, the inertial mass is divided into three parts including the inner mass, the outer mass and the main frame mass. The masses are supported and separated by a set of mutually orthogonal beams to decouple their movements. Moreover, the design is modelled by multi-port-element network(MuPEN) method and the simulation results show that the mode coupling of the gyroscope between driving and sensing mode was eliminated effectively. Furthermore, we proposed a new silicon-on-insulator(SOI) process to fabricate the gyroscope. The scale factor of the fabricated gyroscope is 8.9 mV/((o)?s) and the quality factor(Q-factor) is as high as 600 at atmosphere pressure, and then, the resonant frequency, scale factor and bias drift has been test. Process and test results show that the proposed MEMS gyroscope are effective for decrease mode coupling, furthermore, it can achieve a high performance at atmosphere pressure. Furthermore, the MEMS gyroscope can achieve a high performance at atmosphere pressure. The research can be taken as good advice for the design and fabrication of MEMS gyroscope, meanwhile, it also provides technical support for speeding up of MEMS gyroscope industrialization. | XIE Jianbing YUAN Weizheng CHANG Honglong | 2010 | Chinese Journal of Mechanical Engineering2010，23，1： | 1 |
| 13 | An Integrated MEMS Gyroscope Array with Higher Accuracy Output 显示文摘 | Chang Honglong Xue Liang Qin Wei | 2008 | sensors2008，8，4： | 1 |
| 14 | An integrated MEMS gyroscope array with higher accuracy output显示文摘 | Chang Honglong Xue Liang Qin Wei | 2008 | Sensors2008，8，4： | 1 |
| 15 | An integrated MEMS gyroscope array with higher accuracy output显示文摘 | Chang Honglong Xue Liang Qin Wei | 2008 | Sensors2008，8，4： | 1 |
| 16 | An integrated MEMS gyroscope array with higher accu- racy output显示文摘 | Chang Honglong Xue Liang Qin Wei | 2008 | Sensor2008，8，： | 1 |
| 17 | Brainmask:an ultrasoft and moist microelectrocorticography electrode for accurate positioning and long-lasting recordings显示文摘Bacterial cellulose(BC),a natural biomaterial synthesized by bacteria,has a unique structure of a cellulose nanofiberweaved three-dimensional reticulated network.BC films can be ultrasoft with sufficient mechanical strength,strong water absorption and moisture retention and have been widely used in facial masks.These films have the potential to be applied to implantable neural interfaces due to their conformality and moisture,which are two critical issues for traditional polymer or silicone electrodes.In this work,we propose a micro-electrocorticography(micro-ECoG)electrode named“Brainmask”,which comprises a BC film as the substrate and separated multichannel parylene-C microelectrodes bonded on the top surface.Brainmask can not only guarantee the precise position of microelectrode sites attached to any nonplanar epidural surface but also improve the long-lasting signal quality during acute implantation with an exposed cranial window for at least one hour,as well as the in vivo recording validated for one week.This novel ultrasoft and moist device stands as a next-generation neural interface regardless of complex surface or time of duration. | Bowen Ji Fanqi Sun Jiecheng Guo Yuhao Zhou Xiaoli You Ye Fan Longchun Wang Mengfei Xu Wen Zeng Jingquan Liu Minghao Wang Huijing Hu Honglong Chang | 2023 | Microsystems & Nanoengineering2023，9，5： | 0 |
| 18 | A novel progressive wave gyroscope based on acousto-optic effects显示文摘We propose and numerically investigate a brand-new,high-sensitivity progressive wave gyroscope based on acoustooptic effects for the measurement of rotational angular velocity.Unlike the traditional surface acoustic wave(SAW)gyroscope,which uses shifts in the SAW frequency to characterize the rotational angular velocity,this study uses acousto-optic effects to detect changes in refractive index caused by mechanical strain,measuring the angular velocity by the output optical power intensity of the optical waveguide.The three-dimensional finite element analysis method is utilized to build an SAW excitation model and optical detection model.We show that the sensitivity of the SAW gyroscope is highly dependent upon geometric parameters of the structure and that the mechanical strain induced by the progressive wave of the SAW can be effectively measured by the optical power intensity under the action of external angular velocity.The superiority of the proposed structure is substantiated by its achievement of a theoretical sensitivity of 1.8647(mW/m^(2))/(rad/s)and high impact resistance of 220,000 g.By means of normalization,the sensitivity of the proposed structure can be enhanced by four orders of magnitude compared to the traditional SAW gyroscope.The novel structure combines the advantages of both conventional microscale vibrating gyroscopes and optical gyroscopes,providing a powerful solution for performance enhancement of SAW gyroscopes and,thereby,enabling application in the field of inertial devices. | Lu Tian Qiang Shen Honglong Chang | 2022 | Microsystems & Nanoengineering2022，8，5： | 0 |
| 19 | Mode-localized accelerometer with ultrahigh sensitivity显示文摘The mode localization phenomenon is an effective technique to enhance sensor sensitivity,and some low noise floor mode-localized sensors,including accelerometers,mass sensors,and electrometers,have been successfully realized.To further improve the performance of the mode-localized accelerometer,we report a microelectromechanical system mode-localized accelerometer based on 4-degree of freedom(DoF)weakly coupled resonators(WCRs)with a stress-relief structure eliminating the thermal stress generated during the silicon-on-glass fabrication process.Experimental results show that compared with the state-of-the-art 3-DoF mode-localized accelerometer(4.40 g^(−1)),the amplitude ratio-based sensitivity of the proposed accelerometer(119.36 V·g^(−1))is improved by 2612%.Moreover,the noise floor is 0.64μg·Hz^(−1)/2 from 0.01 to 3 Hz under the closed-loop circumstance.To the authors’best knowledge,this is the lowest measured noise floor for mode-localized accelerometers. | Hao KANG Bing RUAN Yongcun HAO Honglong CHANG | 2022 | Science China(Information Sciences)2022，65，4： | 0 |
| 20 | 3dCAP-Wheat: An Open-Source Comprehensive Computational Framework Precisely Quantifies Wheat Foliar, Nonfoliar, and Canopy Photosynthesis显示文摘Canopy photosynthesis is the sum of photosynthesis of all above-ground photosynthetic tissues.Quantitative roles of nonfoliar tissues in canopy photosynthesis remain elusive due to methodology limitations.Here,we develop the first complete canopy photosynthesis model incorporating all above-ground photosynthetic tissues and validate this model on wheat with state-of-the-art gas exchange measurement facilities. | Tian-Gen Chang Zai Shi Honglong Zhao Qingfeng Song Zhonghu He Jeroen Van Rie Bart Den Boer Alexander Galle Xin-Guang Zhu | 2022 | Plant Phenomics2022，4，1： | 0 |
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