The Experts below are selected from a list of 63696 Experts worldwide ranked by ideXlab platform
Wei Huang - One of the best experts on this subject based on the ideXlab platform.
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all paper based flexible and wearable piezoresistive Pressure Sensor
ACS Applied Materials & Interfaces, 2019Co-Authors: Lei Gao, Chengxian Zhu, Chengwu Zhang, Jinhua Liu, Wei HuangAbstract:Flexible and wearable Pressure Sensors are of paramount importance for the development of personalized medicine and electronic skin. However, the preparation of easily disposable Pressure Sensors is still facing pressing challenges. Herein, we have developed an all paper-based piezoresistive (APBP) Pressure Sensor through a facile, cost-effective, and environmentally friendly method. This Pressure Sensor was based on a tissue paper coated with silver nanowires (AgNWs) as a sensing material, a nanocellulose paper (NCP) as a bottom substrate for printing electrodes, and NCP as a top encapsulating layer. The APBP Pressure Sensor showed a high sensitivity of 1.5 kPa-1 in the range of 0.03-30.2 kPa and retained excellent performance in the bending state. Furthermore, the APBP Sensor has been mounted on the human skin to monitor physiological signals (such as arterial heart pulse and pronunciation from throat) and successfully applied as a soft electronic skin to respond to the external Pressure. Due to the use of the common tissue paper, NCP, AgNWs, and conductive nanosilver ink only, the Pressure Sensor has advantages of low cost, facile craft, and fast preparation and can be disposed off easily by incineration. We believe that the developed Sensor will propel the advancement of easily disposable Pressure Sensors and green paper-based flexible electronic devices.
Liang Ting - One of the best experts on this subject based on the ideXlab platform.
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ltcc fiber fabry perot high temperature Pressure Sensor
2016Co-Authors: Jia Pinggang, Tian Xiaodan, Zhang Huixin, Hong Yingping, Liang Ting, Liu Jia, Xiong Jijun, Li ZheAbstract:The invention discloses an LTCC fiber Fabry-Perot high-temperature Pressure Sensor, and the Pressure Sensor mainly consists of a substrate, a Pressure sensitive membrane, an optical fiber, a core insert, and a tail handle. The LTCC technology is employed for carrying out the integrated manufacturing of the Pressure sensitive membrane and the substrate, which directly contact with high temperature, and high-temperature glue is employed for fixing an optical fiber in the tail handle and the core insert. The ceramic sintering technology or high-temperature glue is employed for connecting the core insert with the substrate. An end face of the optical fiber and the Pressure sensitive membrane are enabled to be placed in parallel to form a Fabry-Perot cavity. The optical fiber sensing technology is employed for measuring the deflection change, caused by Pressure measurement, of the Pressure sensitive membrane, thereby carrying out the measurement of a Pressure. The invention solves a problem that a Sensor is invalid caused by the mismatching of thermal stress under high temperature. In addition, the Pressure Sensor can isolate high temperature through employing fiber transmission, and eliminates the impact on a signal processing circuit from high temperature. In a superhigh temperature environment, the prepared Pressure Sensor can achieve the measurement of a broadband in-situ Pressure.
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optical fiber fabry perot Pressure Sensor and manufacturing method thereof
2015Co-Authors: Jia Pinggang, Wu Bin, Liang Ting, Tan Qiulin, Xiong Jijun, Fang GuochengAbstract:The invention discloses a totally-quartz optical fiber fabry-perot Pressure Sensor which is simple to manufacture and low in cost, and a manufacturing method of the totally-quartz optical fiber fabry-perot Pressure Sensor. The method comprises the steps of processing quartz by the mechanical processing method; melting through high temperature flange; inserting a sleeve with an optical fiber into a reserved aperture; melting and fixing to form the totally-quartz optical fiber fabry-perot Pressure Sensor. All parts of the Sensor are mechanically processed; the size of a film and the size of a fabry-perot size are easily controlled; the Sensor is processed from quartz material, so that the temperature coefficients are small, and high temperature, strong acid and base and other complex and terrible environments can be adapted.
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a novel soi Pressure Sensor for high temperature application
Journal of Semiconductors, 2015Co-Authors: Hong Yingping, Liang Ting, Li Sainan, Wang Wei, Zheng TingliAbstract:The silicon on insulator (SOI) high temperature Pressure Sensor is a novel Pressure Sensor with high-performance and high-quality. A structure of a SOI high-temperature Pressure Sensor is presented in this paper. The key factors including doping concentration and power are analyzed. The process of the Sensor is designed with the critical process parameters set appropriately. The test result at room temperature and high temperature shows that nonlinear error below is 0.1%, and hysteresis is less than 0.5%. High temperature measuring results show that the Sensor can be used for from room temperature to 350 °C in harsh environments. It offers a reference for the development of high temperature piezoresistive Pressure Sensors.
Tian-ling Ren - One of the best experts on this subject based on the ideXlab platform.
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Graphene-Paper Pressure Sensor for Detecting Human Motions
ACS Nano, 2017Co-Authors: Lu Qi Tao, Kun Ning Zhang, Dan Yang Wang, Yuan-quan Chen, He Tian, Yi Yang, Ying Liu, Tian-ling RenAbstract:Pressure Sensors should have an excellent sensitivity in the range of 0–20 kPa when applied in wearable applications. Traditional Pressure Sensors cannot achieve both a high sensitivity and a large working range simultaneously, which results in their limited applications in wearable fields. There is an urgent need to develop a Pressure Sensor to make a breakthrough in both sensitivity and working range. In this paper, a graphene-paper Pressure Sensor that shows excellent performance in the range of 0–20 kPa is proposed. Compared to most reported graphene Pressure Sensors, this work realizes the optimization of sensitivity and working range, which is especially suitable for wearable applications. We also demonstrate that the Pressure Sensor can be applied in pulse detection, respiratory detection, voice recognition, as well as various intense motion detections. This graphene-paper Pressure Sensor will have great potentials for smart wearable devices to achieve health monitoring and motion detection.
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A novel MEMS Pressure Sensor with MOSFET on chip
2008 IEEE Sensors, 2008Co-Authors: Zhaohua Zhang, Yan-hong Zhang, Litian Liu, Tian-ling RenAbstract:A novel MOSFET Pressure Sensor was proposed based on the MOSFET stress sensitive phenomenon, in which the source-drain current changes with the stress in channel region. Two MOSFETpsilas and two piezoresistors were employed to form a Wheatstone bridge served as sensitive unit in the novel Sensor. Compared with the traditional piezoresistive Pressure Sensor, this MOSFET Sensorpsilas sensitivity is improved significantly, meanwhile the power consumption can be decreased. The fabrication of the novel Pressure Sensor is low-cost and compatible with standard IC process. It shows the great promising application of MOSFET-bridge-circuit structure for the high performance Pressure Sensor. This kind of MEMS Pressure Sensor with signal process circuit on the same chip can be used in positive or negative tire Pressure monitoring system (TPMS) which is very hot in automotive electron research field.
Kuoning Chiang - One of the best experts on this subject based on the ideXlab platform.
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sensitivity analysis of packaging effect of silicon based piezoresistive Pressure Sensor
Sensors and Actuators A-physical, 2009Co-Authors: Tsunglin Chou, Chenhung Chu, Chunte Lin, Kuoning ChiangAbstract:The silicon-based Pressure Sensor is one of the major applications in the MEMS device. Nowadays, the silicon piezoresistive Pressure Sensor is a mature technology in the industry, but its requirement in terms of sensing accuracy and stability is more rigorous than that of many advanced applications. The major factor affecting the sensing stability of the piezoresistive Pressure Sensor is its thermal and packing effects. For a packaged Pressure Sensor, silicone gel is usually used to protect the die surface, so the thermal and packaging effects caused by the silicone gel should be taken into consideration to obtain better sensing sensitivity and stability. For fast design and optimization purpose, a finite element method (FEM) is adopted for Sensor performance evaluation, packaging-induced signal variation, and thermal/packaging effects will be examined in this research. Several experiments are also performed to validate the finite element model. After the simulation is validated, an optimization analysis is carried out under different packaged Pressure Sensor design parameters. The simulation results show that the different geometry of the protection gel will influence Pressure sensitivity significantly; base on analysis results, this research will conclude a design guideline for Pressure Sensor packages with concave and convex type of protection gel.
Dae-eun Kim - One of the best experts on this subject based on the ideXlab platform.
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Conductive fiber-based ultrasensitive textile Pressure Sensor for wearable electronics
Advanced Materials, 2015Co-Authors: Jaehong Lee, Hyukho Kwon, Seungbae Son, Ja Hoon Koo, Jae Hyung Kim, Yong Hoon Jang, Changhyun Pang, Jungmok Seo, Sera Shin, Dae-eun KimAbstract:A flexible and sensitive textile-based Pressure Sensor is developed using highly conductive fibers coated with dielectric rubber materials. The Pressure Sensor exhibits superior sensitivity, very fast response time, and high stability compared with previous textile-based Pressure Sensors. By using a weaving method, the Pressure Sensor can be applied to make smart gloves and clothes which can control machines wirelessly as human-machine interfaces.
