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EventTracker Based Regression Prediction with Application to Composite Sensitive Microsensor Parameter Prediction 认领 引用
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作者 Hongrong Wang Xinjian Li +1 位作者 Xingjing She Wenjian Ma 《Computer Modeling in Engineering & Sciences》 SCIE EI 2025年第11期2039-2055,共17页
In modern complex systems,real-time regression prediction plays a vital role in performance evaluation and risk warning.Nevertheless,existing methods still face challenges in maintaining stability and predictive accur... In modern complex systems,real-time regression prediction plays a vital role in performance evaluation and risk warning.Nevertheless,existing methods still face challenges in maintaining stability and predictive accuracy under complex conditions.To address these limitations,this study proposes an online prediction approach that integrates event tracking sensitivity analysis with machine learning.Specifically,a real-time event tracking sensitivity analysis method is employed to capture and quantify the impact of key events on system outputs.On this basis,a mutualinformation–based self-extraction mechanism is introduced to construct prior weights,which are then incorporated into a LightGBM prediction model.Furthermore,iterative optimization of the feature selection threshold is performed to enhance both stability and accuracy.Experiments on composite microsensor data demonstrate that the proposed method achieves robust and efficient real-time prediction,with potential extension to industrial monitoring and control applications. 展开更多
关键词 Event tracking sensitivity analysis real-time regression prediction mutual information feature selection LightGBM composite sensitive microsensor
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An interdigitated impedance microsensor for detection of moisture content in engine oil 认领 引用 被引量：1
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作者 Haitao Liu Xiecheng Tang +3 位作者 Hao Lu Wenguang Xie Yanmin Hu Qiannan Xue 《Nanotechnology and Precision Engineering》 EI CAS CSCD 2020年第2期75-80,共6页
To address the need for the on-site measurement of aging oil, in this paper, we propose an impedance-based microsensor for analyzing the moisture content in engine oil. Using a microfabrication process, we fabricated ... To address the need for the on-site measurement of aging oil, in this paper, we propose an impedance-based microsensor for analyzing the moisture content in engine oil. Using a microfabrication process, we fabricated an interdigitated microelectrode and integrated it with a 3 D-printed microcontainer to produce a microsensor that can detect changes in the permittivity of oil. When the moisture content in oil increases, this sensor can detect the resulting change in the oil impedance, which is related to its permittivity, and then determine the degree to which the oil has aged. The test results show that the proposed microsensor has the advantages of being small and having high sensitivity, good accuracy, and the ability to be combined with hand-held instruments.The proposed method is expected to be used for the rapid, low cost, on-site determination of oil aging. 展开更多
关键词 Complex permittivity Oil detection Microsensor Moisture content Impedance sensor
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ELECTRIC FIELD MICROSENSOR BASED ON THE STRUCTURE OF PIEZOELECTRIC INTERDIGITATED CANTILEVER BEAMS 认领 引用 被引量：1
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作者 Feng Ke Tong Jianhua +2 位作者 Wang Yu Fang Dongming Xia Shanhong 《Journal of Electronics(China)》 2014年第6期497-504,共8页
This paper presents the design, fabrication, and preliminary experimental result of an electric field microsensor based on the structure of piezoelectric interdigitated cantilevers with staggered vertical vibration mo... This paper presents the design, fabrication, and preliminary experimental result of an electric field microsensor based on the structure of piezoelectric interdigitated cantilevers with staggered vertical vibration mode. The working principle of this electric field microsensor is demonstrated, and the induced charges and structural parameters of this microsensor are simulated by the finite element method. The electric field microsensor was fabricated by Micro-Electro Mechanical Systems(MEMS) technique. Each cantilever is a multilayer compound structure(Al/Si3N4/ Pt/PZT/Pt/ Ti/SiO 2/Si), and Piezoelectric, PieZ oelectric ceramic Transducer(PZT)(PbZ rxTi(1–x)O3) layer, prepared by sol-gel method, is used as the piezoelectric material to drive the cantilevers vibrating. This electric field microsensor was tested under the DC electric field with the field intensity from 0 to 5×104 V/m. The output voltage signal of the electric field microsensor has a good linear relationship to the intensity of applied electric field. The performance could be improved with the optimized design of structure, and reformative fabrication processes of PZT material. 展开更多
关键词 Micro-ElectroM echanical Systems(MEMS) Electric field microsensor Piezoelectric PieZ oelectric ceramic Transducer(PZT) driven
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A band-gap voltage reference for interface circuit of microsensor 认领 引用 被引量：1
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作者 曹一江 肖飞 张尔东 《Journal of Harbin Institute of Technology(New Series)》 EI CAS 2010年第4期497-500,共4页
A high performance CMOS band-gap voltage reference circuit that can be used in interface integrated circuit of microsensor and compatible with 0. 6 μm ( double poly) mix process is proposed in this paper. The circuit... A high performance CMOS band-gap voltage reference circuit that can be used in interface integrated circuit of microsensor and compatible with 0. 6 μm ( double poly) mix process is proposed in this paper. The circuit can be employed in the range of 1. 8 - 8 V and carry out the first-order PTAT ( proportional to absolute temperature) temperature compensation. Through using a two-stage op-amp with a NMOS input pair as a negative feedback op-amp,the PSRR ( power supply rejection ratio) of the entire circuit is increased,and the temperature coefficient of reference voltage is decreased. Results from HSPICE simulation show that the PSRR is - 72. 76 dB in the condition of low-frequency,the temperature coefficient is 2. 4 × 10 -6 in the temperature range from - 10 ℃ to 90 ℃ and the power dissipation is only 14 μW when the supply voltage is 1. 8 V. 展开更多
关键词 microsensor band-gap voltage reference temperature coefficient PSRR
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AN ANALYSIS ON CHARACTERISTIC OF MAGNETOELASTICITY OF A MAGNETIC FIELD MICROSENSOR MADE OF CANTILEVERED PLATES WITH FERROMAGNETIC FILMS 认领 引用
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作者 Zhou Youhe He Qinshu Zheng Xiaojing 《Acta Mechanica Solida Sinica》 SCIE 2000年第3期216-222,共7页
The purpose of this paper is to study the magnetomechanicalcharacteristic of a microsensor which is composed of a cantileveredbeam-plate with ferromagnetic films in order to measure the magneticfield from the deformat... The purpose of this paper is to study the magnetomechanicalcharacteristic of a microsensor which is composed of a cantileveredbeam-plate with ferromagnetic films in order to measure the magneticfield from the deformation of plate when the microsensor is locatedin the magnetic field. To this end, a nu- merical approach made up ofthe finite element method for magnetic field and the finitedifference method for deflection of the microsensor is proposed toperform the numerical analysis of deflection under magnetoelasticinteraction. Some quantitative results of a case study for themagnetoelastic characteristic between the mag- netic field anddeflection of the microsensor in the magnetic field are given. Theresults show that this mi- crosensor can be used not only to measurethe magnitude of magnetic intensity, but also to possibly monitor thedirection of the vector of the magnetic field. 展开更多
关键词 ferromagnetic films cantilevered beam plate microsensor for magneticfield
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Implantable Electrochemical Microsensors for In Vivo Monitoring of Animal Physiological Information 认领 引用 被引量：5
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作者 Jin Zhou Shenghan Zhou +4 位作者 Peidi Fan Xunjia Li Yibin Ying Jianfeng Ping Yuxiang Pan 《Nano-Micro Letters》 SCIE EI CAS CSCD 2024年第3期183-211,共29页
In vivo monitoring of animal physiological information plays a crucial role in promptly alerting humans to potential diseases in animals and aiding in the exploration of mechanisms underlying human diseases.Currently,... In vivo monitoring of animal physiological information plays a crucial role in promptly alerting humans to potential diseases in animals and aiding in the exploration of mechanisms underlying human diseases.Currently,implantable electrochemical microsensors have emerged as a prominent area of research.These microsensors not only fulfill the technical requirements for monitoring animal physiological information but also offer an ideal platform for integration.They have been extensively studied for their ability to monitor animal physiological information in a minimally invasive manner,characterized by their bloodless,painless features,and exceptional performance.The development of implantable electrochemical microsensors for in vivo monitoring of animal physiological information has witnessed significant scientific and technological advancements through dedicated efforts.This review commenced with a comprehensive discussion of the construction of microsensors,including the materials utilized and the methods employed for fabrication.Following this,we proceeded to explore the various implantation technologies employed for electrochemical microsensors.In addition,a comprehensive overview was provided of the various applications of implantable electrochemical microsensors,specifically in the monitoring of diseases and the investigation of disease mechanisms.Lastly,a concise conclusion was conducted on the recent advancements and significant obstacles pertaining to the practical implementation of implantable electrochemical microsensors. 展开更多
关键词 Electrochemical microsensors Implantable sensors In vivo monitoring Animal physiological information
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RhIr@MoS2 nanohybrids based disposable microsensor for the point-of-care testing of NADH in real human serum 认领 引用 被引量：1
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作者 Dongqing Ji Zi Ying +5 位作者 Yuan Zhang Wei Chen Metini Janyasupab Xinghua Gao Lingyan Feng Weijia Wen 《Chinese Chemical Letters》 SCIE CAS CSCD 2020年第8期2115-2118,共4页
Dihydronicotinamide adenine dinucleotide(NADH)is an important enzyme in all living cells,which is found to be abnormally expressed in cancer cells.Since it is redox-active,an electrochemical detection method would be ... Dihydronicotinamide adenine dinucleotide(NADH)is an important enzyme in all living cells,which is found to be abnormally expressed in cancer cells.Since it is redox-active,an electrochemical detection method would be suitable for monitoring its concentration in biological fluids.Here we present a strategy for specific determination of NADH in real human serum by using RhIr@MoS2 nanohybrids based microsensor.To implement the protocol,RhIr nanocrysrals are in-situ grown onto MoS2 interlayers forming a nanohybrid structure(RhIr@MoS2).After being locally deposited on an electrochemical microsensor,it could be used for the analysis of NADH.The developed RhIr@MoS2 nanohybrids based microsensor possesses the ability for analyzing NADH at the applied potential of 0.07 V(much lower than most reported values).The detection limit is evaluated as low as 1 nmol/L even in bovine serum albumin(BSA)media.In addition,the sampling analysis of human serum from cancer patients and health controls shows that the microsensor displays good diagnostic sensitivity and specificity,illustrating that this developed detection technique is a relatively accurate method for measuring NADH in biological fluids.The proposed electrochemical microsensor assay also owns the benefits of convenience,disposable and easy processing,which make it a great possibility for future point-of-care cancer diagnosis. 展开更多
关键词 MoS2 Nanohybrid Electrochemical microsensor Point-of-care(POC)test Cancer diagnosis
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Sulfate reducing bacterial community and in situ activity in mature fine tailings analyzed by real time qPCR and microsensor 认领 引用 被引量：2
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作者 Hong Liu Shuying Tan +1 位作者 Tong Yu Yang Liu 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2016年第6期141-147,共7页
Sulfate reducing bacteria（SRB） play significant roles in anaerobic environments in oil sands mature fine tailings（MFTs）. Hydrogen sulfide（H2S） is produced during the biological sulfate reduction process. The pro... Sulfate reducing bacteria（SRB） play significant roles in anaerobic environments in oil sands mature fine tailings（MFTs）. Hydrogen sulfide（H2S） is produced during the biological sulfate reduction process. The production of toxic H2S is one of the concerns because it may hinder the landscape remediation efficiency of oil sands tailing ponds. In present study, the in situ activity and the community structure of SRB in MFT and gypsum amended MFT in two settling columns were investigated. Combined techniques of H2S microsensor and dissimilatory sulfite reductase β-subunit（dsrB） genes-based real time quantitative polymerase chain reaction（qPCR） were applied to detect the in situ H2S and the abundance of SRB. A higher diversity of SRB and more H2S were observed in gypsum amended MFT than that in MFT, indicating a higher sulfate reduction activity in gypsum amended MFT; in addition, the activity of SRB varied as depth in both MFT and gypsum amended MFT： the deeper the more H2S produced. Long-term plans for tailings management can be assessed more wisely with the information provided in this study. 展开更多
关键词 Sulfate reducing bacteria Hydrogen sulfide Oil sands tailing Molecular biology Microsensor
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Meso-Scale VOC-Mixture Analyzer with Tunable Separation and Microsensor Array Detection 认领 引用
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作者 Qiongyan Zhong William H. Steinecker Edward T. Zellers 《稀有金属材料与工程》 SCIE EI CAS 北大核心 2006年第A3期61-64,共4页
A novel portable instrument developed for field determinations of complex mixtures of volatile organic compounds (VOCs) is described.The key features of the instrument are a miniature multi-stage adsorbent preconcentr... A novel portable instrument developed for field determinations of complex mixtures of volatile organic compounds (VOCs) is described.The key features of the instrument are a miniature multi-stage adsorbent preconcentrator/focuser,two series-coupled separation columns with pressure and temperature tunable retention control,and an integrated array of four chemiresistor (CR) sensors coated with Au-thiolate monolayer-protected nanoparticles (MPN).MPN-CR array response patterns are used with retention times to identify eluting vapors.Air is used as the carrier gas.Calibrations of 20 common indoor air contaminants gave LODs in the range of 0.05 ng/g～0.53 ng/g for a 1 L sample volume.Results of preliminary analyses of characteristic VOCs generated from U.S.currency as well as vapor-phase markers of environmental tobacco smoke (ETS) at low-or sub-ng/g levels are presented. 展开更多
关键词 microsensor gas chromatography nanoparticle sensor array portable ETS
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A 70 MPa silicon resonant pressure microsensor with resonators supported by micro beams based on volume compressed sensing 认领 引用
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作者 Zongze Yu Pan Qian +4 位作者 Yulan Lu Bo Xie Deyong Chen Junbo Wang Jian Chen 《Microsystems & Nanoengineering》 SCIE EI CSCD 2025年第3期589-597,共9页
Meeting the growing demands for accuracy,resolution and response time of high-pressure microsensors applicated in ocean science and petroleum industry,this paper developed a silicon resonant high pressure microsensor ... Meeting the growing demands for accuracy,resolution and response time of high-pressure microsensors applicated in ocean science and petroleum industry,this paper developed a silicon resonant high pressure microsensor based on volume compressed sensing with dual resonators supported by micro beams.In operation,the frequency of resonators shifts while the volume of microsensor compressed under high pressure.A couple of micro beams were introduced to support resonators and protect resonators from buckling in high pressure.At the meanwhile,the theoretical model of micro beams was established.Based on the expression between geometric parameters of micro beams and pressure sensitivity of resonators,the micro beams of the two resonators were modified that results in different pressure sensitivities of two resonators,which effectively performed temperature self-compensation.An eutectic bonding is adopted for wafer vacuum packaged.Dealing with potentially complex hydraulic measurement,the microsensors were surrounded by silicone oil and sealed with a corrugated diaphragm and a base.The pressure sensitivities of fabricated microsensors were quantified as 0.003 kHz/MPa(~30 ppm/MPa)of Resonator Ⅰ and−0.118 kHz/MPa(~−1311 ppm/MPa)of Resonator Ⅱ under 20℃,which match with theoretical analysis.Finally,the accuracy of this microsensors is better than 0.01%FS with temperature self-compensation under the pressure range of 0.1~70 MPa from−10℃to 50℃,along with a response time better than 10 ms and a resolution of 100 Pa.This paper provided an effective structure of micro beams for resonant high-pressure microsensors combined with volume compressed sensing,derived the quantitative relationship between key structural parameters and sensitivity,and performed a possibility of high accuracy and high resolution measurements of a much wider pressure range. 展开更多
关键词 ocean science volume compressed sensing micro beams silicon resonant pressure microsensor micro beamsin silicon resonant high pressure microsensor
Single-chip 3D electric field microsensor 认领 引用 被引量：4
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作者 Biyun LING Yu WANG +4 位作者 Chunrong PENG Bing LI Zhaozhi CHU Bin LI Shanhong XIA 《Frontiers of Mechanical Engineering》 SCIE CSCD 2017年第4期581-590,共10页
This paper presents a single-chip 3D electric field microsensor, in which a sensing element is set at the center to detect the Z-axis component of an electrostatic field. Two pairs of sensing elements with the same st... This paper presents a single-chip 3D electric field microsensor, in which a sensing element is set at the center to detect the Z-axis component of an electrostatic field. Two pairs of sensing elements with the same structure are arranged in a cross-like configuration to measure the X- and Y-axis electrostatic field components. An in-plane rotary mechanism is used in the microsensor to detect the X-, Y-, and Z-axis electrostatic field components simultaneously. The proposed microsensor is compact and presents high integration. The microsensor is fabricated through a MetalMUMPS process. Experimental results show that in the range of 0-50 kV/m, the linearity errors of the microsensor are within 5.5%, and the total measure- ment errors of the three electrostatic field components are less than 14.04%. 展开更多
关键词 electric field microsensor three-dimensional,single-chip in-plane rotation
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Design and implementation of a low-pass filter for microsensor signal processing 认领 引用 被引量：1
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作者 王竹萍 仲顺安 +1 位作者 丁英涛 王晓清 《Journal of Semiconductors》 EI CAS 北大核心 2010年第12期101-104,共4页
A novel low-pass filter that consists of a switched capacitor filter （SCF） and its antialiasing prefilter and smoothing postfilter is proposed for a microsensor signal processing system, which is used in separation ... A novel low-pass filter that consists of a switched capacitor filter （SCF） and its antialiasing prefilter and smoothing postfilter is proposed for a microsensor signal processing system, which is used in separation point detection on the surface of micro air vehicles. In the system, the filter is not only applied to finish the function of filtering but also used as the front end antialiasing filter of the over sampling analog-to-digital converter. This proposed implementation mostly relies on the design of a high-precision SCF employing a correlated double sampling technique and optimisation switches. Simultaneously, the multiple-loop feedback low pass filter with good high frequency attenuation characteristics is applied as the pre- and postfilter. The design is implemented in the Central Semiconductor Manufacturing Corporation （CSMC） 0.5 μm double-poly three-metal （2P3M） 3 chip die area occupies only 0.39 mm2 and dissipatesl.53 mW. 3 V CMOS technology, with satisfactory results, The 展开更多
关键词 filter low-pass low-power microsensor signal processing system
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基于内置MEMS传感器的单元火工品原位压力监测方法 认领 引用
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作者 陈絮 吴瑞德 +4 位作者 杨莉 郭晓荣 陈小松 丁茂元 张欣 《火工品》 CAS CSCD 北大核心 2026年第1期8-13,共6页
为破解单元火工品全寿命周期“不可检、不可修”导致的可靠性评价盲区,本文提出一种“零接口改动”的内置MEMS原位监测技术。以双桥四针电起爆器为载体,在电极塞对称双凹槽内同步贴装SOI压阻压力微传感器与半导体桥发火芯片。标定结果显... 为破解单元火工品全寿命周期“不可检、不可修”导致的可靠性评价盲区,本文提出一种“零接口改动”的内置MEMS原位监测技术。以双桥四针电起爆器为载体,在电极塞对称双凹槽内同步贴装SOI压阻压力微传感器与半导体桥发火芯片。标定结果显示:0~5 MPa范围内传感器平均灵敏度1.636 mV·MPa-1,线性度R2≥0.999;1A安全电流下首次捕捉到1.3 MPa热-固体膨胀瞬态峰,揭示桥-药剂界面约束应力机制;5A发火状态下微传感器测得21.7MPa,较侧壁标准传感器高6 MPa,响应滞后<0.3 ms。该方案将传统“桥丝电阻”间接判据升级为“温度-压力”直接物理量,具备通用接口、可扩展、可批量制造等优势,为火工品健康监测与数据驱动设计提供了通用、便携的新途径。 展开更多
关键词 单元火工品 原位监测 MEMS微传感器 热-固体膨胀 压力监测
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考虑迟滞蠕变特性的IPMC应用综述 认领 引用
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作者 张霖 杨宇航 +3 位作者 陈磊 谢开鑫 庞义辉 王成军 《机械设计与研究》 CSCD 北大核心 2025年第5期281-294,共14页
离子聚合物金属复合材料(IPMC)是一种典型的离子型电活性聚合物,因其在外部激励下实现微观离子迁移与宏观形变的能力,成为智能材料领域的研究焦点。IPMC具有低电压驱动、大弯曲位移及双向致动特性,其迟滞和蠕变行为的研究对于提升性能... 离子聚合物金属复合材料(IPMC)是一种典型的离子型电活性聚合物,因其在外部激励下实现微观离子迁移与宏观形变的能力,成为智能材料领域的研究焦点。IPMC具有低电压驱动、大弯曲位移及双向致动特性,其迟滞和蠕变行为的研究对于提升性能和拓展应用至关重要。综合分析了IPMC的微观传质过程及其对宏观形变和电学响应的影响,通过机理研究与文献综述,探讨了IPMC在传感与驱动技术中的应用前景。总结了IPMC的迟滞蠕变特性及其表征模型,梳理了其在仿生机器人、医疗器械和可穿戴设备等领域的应用现状。展望了IPMC在同位自传感驱动、微传感阵列和多模态传感等新兴领域的研究前景,指出通过材料优化、结构设计创新和控制策略的发展,可缓解迟滞蠕变问题,提升IPMC性能。研究结果揭示了IPMC在智能材料领域的广阔发展前景,有望推动仿生学、医疗器械和智能穿戴技术的革命性变革。未来研究应聚焦于材料改性、结构创新和智能控制算法开发,以促进IPMC技术的广泛应用。本文为IPMC研究者提供了前沿参考,对推动技术发展与应用具有指导意义。 展开更多
关键词 离子聚合物金属复合材料 迟滞 蠕变 柔性感知 微传感阵列 自传感驱动 多模态传感
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Novel estradiol sensors based on carbon nanotube multilayer modified gold hair microelectrodes 认领 引用 被引量：3
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作者 Jun Hui Xu Cheng Guo Hu Sheng Shui Hu 《Chinese Chemical Letters》 SCIE CAS 2009年第10期1248-1250,共3页
Multi-walled carbon nanotube multilayers were modified onto a newly proposed gold hair microelectrode via a simple layer-bylayer assembling method. The resulting electrode showed a sensitive oxidation response to estr... Multi-walled carbon nanotube multilayers were modified onto a newly proposed gold hair microelectrode via a simple layer-bylayer assembling method. The resulting electrode showed a sensitive oxidation response to estradiol with detection limit as low as 1.0 × 10^-8 mol/L, foreseeing a promising approach to the fabrication of high-sensitive microsensors. 展开更多
关键词 Layer-by-layer assembly Carbon nanotubes Hair microsensors Estradiol
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A High Precision CMOS Opamp Suitable for ISFET Readout 认领 引用 被引量：1
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作者 张翀 杨海钢 魏金宝 《Journal of Semiconductors》 CAS 北大核心 2008年第4期686-692,共7页
This paper presents a high precision CMOS opamp suitable for ISFET readout. The opamp is tailored to provide a constant bias condition for ISFET as part of the readout circuits and,hence,is compatible for single chip ... This paper presents a high precision CMOS opamp suitable for ISFET readout. The opamp is tailored to provide a constant bias condition for ISFET as part of the readout circuits and,hence,is compatible for single chip integration with the sensor. A continuous time auto-zero stabilization technique is studied and employed, with the aim of suppressing the low frequency noises, including the offset voltage, 1/f noise, and temperature drift. The design is based on a 0.35μm CMOS process. With a 3.3V power supply,it maintains a DC open loop gain of more than 100dB and an offset voltage of around 11μV,while the overall power dissipation is only 1.48mW. With this opamp, a pH microsensor is constructed, of which the functionality is verified by experimental tests. 展开更多
关键词 high precision auto-zero operational amplifier ISFET microsensor
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Use of microelectrodes for electrochemical measurement of nitric oxide in natural seawater 认领 引用 被引量：1
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作者 张正斌 邢磊 +2 位作者 蔡卫君 任春艳 姜立庆 《Chinese Journal of Oceanology and Limnology》 2004年第4期373-380,共8页
In this paper, the application of a homemade Nafion and Co(Salen) modified platinum microelec-trode and an ISO-NOPMC microsensor (World Precision Instruments, USA ) to measure nitric oxide in natural seawater is repor... In this paper, the application of a homemade Nafion and Co(Salen) modified platinum microelec-trode and an ISO-NOPMC microsensor (World Precision Instruments, USA ) to measure nitric oxide in natural seawater is reported. These two microelectrodes are suitable for the measurement. In natural seawater, the sensitivity and stability of the ISO-NOPMC microsensor are higher than that of the homemade Nafion and Co(Salen) modified platinum microelectrode. 展开更多
关键词 Nafion and Co(Salen) modified platinum microelectrode ISO-NOPMC microsensor nitric oxide seawater
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A Distributed Clustering Algorithm for Wireless Sensor Networks 认领 引用
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作者 SHANG Fengjun 《Wuhan University Journal of Natural Sciences》 CAS 2008年第4期385-390,共6页
In the paper, we consider a network of energy constrained sensors deployed over a region. Each sensor node in such a network is systematically gathering and transmitting sensed data to a base station （via clusterhead... In the paper, we consider a network of energy constrained sensors deployed over a region. Each sensor node in such a network is systematically gathering and transmitting sensed data to a base station （via clusterhead） for further processing. The key problem focuses on how to reduce the power consumption of wireless microsensor networks. The core includes the energy efficiency of clusterheads and that of cluster members. We first extend low-energy adaptive clustering hierarchy （LEACH）＇s stochastic clusterhead selection algorithm by a factor with distance-based deterministic component （LEACH-D） to reduce energy consumption for energy efficiency of clusterhead. And the cost function is proposed so that it balances the energy consumption of nodes for energy efficiency of cluster member. Simulation results show that our modified scheme can extend the network life around up to 40% before first node dies. Through both theoretical analysis and numerical results, it is shown that the proposed algorithm achieves better performance than the existing representative methods. 展开更多
关键词 data aggregation wireless microsensor networks low-energy adaptive clustering hierarchy （LEACH） clusterhead selection
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Interdigital MnO2/PEDOT Alternating Stacked Microelectrodes for High-Performance On-Chip Microsupercapacitor and Humidity Sensing 认领 引用 被引量：2
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作者 Muhammad Tahir Lihong Li +5 位作者 Liang He Zhongyuan Xiang Zeyu Ma Waqas Ali Haider Xiaoqiao Liao Yanlin Song 《Energy & Environmental Materials》 SCIE EI CAS CSCD 2024年第2期257-267,共11页
For microelectronic devices,the on-chip microsupercapacitors with facile construction and high performance,are attracting researchers'prior consideration due to their high compatibility with modern microsystems.He... For microelectronic devices,the on-chip microsupercapacitors with facile construction and high performance,are attracting researchers'prior consideration due to their high compatibility with modern microsystems.Herein,we proposed interchanging interdigital Au-/MnO2/polyethylene dioxythiophene stacked microsupercapacitor based on a microfabrication process followed by successive electrochemical deposition.The stacked configuration of two pseudocapacitive active microelectrodes meritoriously leads to an enhanced contact area between MnO2and the conductive and electroactive layer of polyethylene dioxythiophene,hence providing excellent electron transport and diffusion pathways of electrolyte ions,resulting in increased pseudocapacitance of MnO2and polyethylene dioxythiophene.The stacked quasi-solid-state microsupercapacitors delivered the maximum specific capacitance of 43 mF cm-2(211.9 F cm-3),an energy density of 3.8μWh cm-2(at a voltage window of 0.8 V)and 5.1μWh cm-2(at a voltage window of 1.0 V)with excellent rate capability(96.6%at 2 mA cm-2)and cycling performance of 85.3%retention of initial capacitance after 10000 consecutive cycles at a current density of 5 mA cm-2,higher than those of ever reported polyethylene dioxythiophene and MnO2-based planar microsupercapacitors.Benefiting from the favorable morphology,bilayer microsupercapacitor is utilized as a flexible humidity sensor with a responseelaxation time superior to those of some commercially available integrated microsensors.This strategy will be of significance in developing high-performance on-chip integrated microsupercapacitors/microsensors at low cost and environment-friendly routes. 展开更多
关键词 electrochemical polymerization microsensor microsupercapacitor stacked microelectrode
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SOI微型电场传感器的设计与测试 认领 引用 被引量：21
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作者 杨鹏飞 彭春荣 +2 位作者 张海岩 刘世国 夏善红 《电子与信息学报》 EI CAS CSCD 北大核心 2011年第11期2771-2774,共4页
该文研制了一种新型的基于SOI(Silicon-On-Insulator)微机械加工技术的高性能电场传感器敏感结构。为提高传感器的灵敏度和信噪比,该器件采用侧面屏蔽感应电极的独特设计方案,降低了传感器屏蔽电极的边缘效应;并基于有限元仿真,进一步... 该文研制了一种新型的基于SOI(Silicon-On-Insulator)微机械加工技术的高性能电场传感器敏感结构。为提高传感器的灵敏度和信噪比,该器件采用侧面屏蔽感应电极的独特设计方案,降低了传感器屏蔽电极的边缘效应;并基于有限元仿真,进一步优化了传感器敏感结构参数。在室温和室内大气压条件下,测试表明,测试量程0～50kV/m,传感器总不确定度优于2%,分辨率为50 V/m。 展开更多
关键词 电场微传感器 微机电系统(MEMS) 绝缘体上硅(SOI) 分辨率
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