The Experts below are selected from a list of 38001 Experts worldwide ranked by ideXlab platform
Qiulin Tan - One of the best experts on this subject based on the ideXlab platform.
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antenna resonator integrated wireless passive temperature sensor based on low temperature co fired ceramic for Harsh Environment
Sensors and Actuators A-physical, 2015Co-Authors: Tanyong Wei, Guozhu Wu, Xiaoyong Chen, Qiulin Tan, Chen Li, Tao Luo, Jijun XiongAbstract:Abstract This paper proposes a resonator-antenna integrated microstrip antenna temperature sensor based on a low-temperature co-fired ceramic (LTCC), whose permittivity varies monotonously with the temperature. The dimensional design process was first analyzed in detail, and by combining the standard LTCC technology, the sensor was fabricated using 15 layers of a green tape. To interrogate the sensor, a coplanar waveguide (CPW)-fed microstrip antenna, possessing a relatively large bandwidth, was designed and optimized using high frequency structure simulator software, and then fabricated on alumina ceramic through a screen-printing process. The sensor was then tested on a developed high-temperature measurement system. Because the original detected sweep signal was difficult to distinguish, a time-domain (T-D) gating method for filtering a background signal was introduced. The extracted peak frequency was found to decrease linearly with an increase in temperature to within 400 °C at a 30-mm reading distance, with a measurement sensitivity of 0.24 MHz/°C. Simultaneously, the antenna polarity was found to have a significant influence on the readout signal. Finally, for the introduced T-D gating method, this study analyzes that the sensor can be sensed at a long distance when using a high-gain interrogation antenna. It is expected that the proposed sensor can be used in monitoring the temperature in a Harsh Environment.
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wireless passive temperature sensor realized on multilayer htcc tapes for Harsh Environment
Journal of Sensors, 2015Co-Authors: Tingli Zheng, Ting Cai, Sainan Li, Qiulin Tan, Zhong Ren, Chen Li, Jijun XiongAbstract:A wireless passive temperature sensor is designed on the basis of a resonant circuit, fabricated on multilayer high temperature cofired ceramic (HTCC) tapes, and measured with an antenna in the wireless coupling way. Alumina ceramic used as the substrate of the sensor is fabricated by lamination and sintering techniques, and the passive resonant circuit composed of a planar spiral inductor and a parallel plate capacitor is printed and formed on the substrate by screen-printing and postfiring processes. Since the permittivity of the ceramic becomes higher as temperature rises, the resonant frequency of the sensor decreases due to the increasing capacitance of the circuit. Measurements on the input impedance versus the resonant frequency of the sensor are achieved based on the principle, and discussions are made according to the exacted relative permittivity of the ceramic and quality factor () of the sensor within the temperature range from 19°C (room temperature) to 900°C. The results show that the sensor demonstrates good high-temperature characteristics and wide temperature range. The average sensitivity of the sensor with good repeatability and reliability is up to 5.22 KHz/°C. It can be applied to detect high temperature in Harsh Environment.
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wireless ltcc based capacitive pressure sensor for Harsh Environment
Sensors and Actuators A-physical, 2013Co-Authors: Jijun Xiong, Qiulin Tan, Ying Li, Tianhong Cui, Binzhen Zhang, Yingping Hong, Shijun Zheng, Ting LiangAbstract:Abstract This paper presents a wireless capacitive pressure sensor based on LTCC (low temperature co-fired ceramic) technology, where the design, fabrication, and measurement of the sensor is demonstrated and discussed. Differ from traditional LTCC process flow, a unique process of screen-printing sacrifice layer has been introduced to avoid deformation of the capacitive embedded cavity during lamination or sintering, which leads to a better performance of the sensor. A greater sensitivity of the sensor, comparing with its predecessors, is showed during measurement. Finally ways for future optimization are proposed.
Jijun Xiong - One of the best experts on this subject based on the ideXlab platform.
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antenna resonator integrated wireless passive temperature sensor based on low temperature co fired ceramic for Harsh Environment
Sensors and Actuators A-physical, 2015Co-Authors: Tanyong Wei, Guozhu Wu, Xiaoyong Chen, Qiulin Tan, Chen Li, Tao Luo, Jijun XiongAbstract:Abstract This paper proposes a resonator-antenna integrated microstrip antenna temperature sensor based on a low-temperature co-fired ceramic (LTCC), whose permittivity varies monotonously with the temperature. The dimensional design process was first analyzed in detail, and by combining the standard LTCC technology, the sensor was fabricated using 15 layers of a green tape. To interrogate the sensor, a coplanar waveguide (CPW)-fed microstrip antenna, possessing a relatively large bandwidth, was designed and optimized using high frequency structure simulator software, and then fabricated on alumina ceramic through a screen-printing process. The sensor was then tested on a developed high-temperature measurement system. Because the original detected sweep signal was difficult to distinguish, a time-domain (T-D) gating method for filtering a background signal was introduced. The extracted peak frequency was found to decrease linearly with an increase in temperature to within 400 °C at a 30-mm reading distance, with a measurement sensitivity of 0.24 MHz/°C. Simultaneously, the antenna polarity was found to have a significant influence on the readout signal. Finally, for the introduced T-D gating method, this study analyzes that the sensor can be sensed at a long distance when using a high-gain interrogation antenna. It is expected that the proposed sensor can be used in monitoring the temperature in a Harsh Environment.
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wireless passive temperature sensor realized on multilayer htcc tapes for Harsh Environment
Journal of Sensors, 2015Co-Authors: Tingli Zheng, Ting Cai, Sainan Li, Qiulin Tan, Zhong Ren, Chen Li, Jijun XiongAbstract:A wireless passive temperature sensor is designed on the basis of a resonant circuit, fabricated on multilayer high temperature cofired ceramic (HTCC) tapes, and measured with an antenna in the wireless coupling way. Alumina ceramic used as the substrate of the sensor is fabricated by lamination and sintering techniques, and the passive resonant circuit composed of a planar spiral inductor and a parallel plate capacitor is printed and formed on the substrate by screen-printing and postfiring processes. Since the permittivity of the ceramic becomes higher as temperature rises, the resonant frequency of the sensor decreases due to the increasing capacitance of the circuit. Measurements on the input impedance versus the resonant frequency of the sensor are achieved based on the principle, and discussions are made according to the exacted relative permittivity of the ceramic and quality factor () of the sensor within the temperature range from 19°C (room temperature) to 900°C. The results show that the sensor demonstrates good high-temperature characteristics and wide temperature range. The average sensitivity of the sensor with good repeatability and reliability is up to 5.22 KHz/°C. It can be applied to detect high temperature in Harsh Environment.
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wireless ltcc based capacitive pressure sensor for Harsh Environment
Sensors and Actuators A-physical, 2013Co-Authors: Jijun Xiong, Qiulin Tan, Ying Li, Tianhong Cui, Binzhen Zhang, Yingping Hong, Shijun Zheng, Ting LiangAbstract:Abstract This paper presents a wireless capacitive pressure sensor based on LTCC (low temperature co-fired ceramic) technology, where the design, fabrication, and measurement of the sensor is demonstrated and discussed. Differ from traditional LTCC process flow, a unique process of screen-printing sacrifice layer has been introduced to avoid deformation of the capacitive embedded cavity during lamination or sintering, which leads to a better performance of the sensor. A greater sensitivity of the sensor, comparing with its predecessors, is showed during measurement. Finally ways for future optimization are proposed.
Jiale Yong - One of the best experts on this subject based on the ideXlab platform.
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femtosecond laser ablated durable superhydrophobic ptfe films with micro through holes for oil water separation separating oil from water and corrosive solutions
Applied Surface Science, 2016Co-Authors: Jiale Yong, Yao Fang, Feng Chen, Jinglan Huo, Qing Yang, Hao Bian, Xun HouAbstract:Abstract Separating the mixture of water and oil by the superhydrophobic porous materials has attracted increasing research interests; however, the surface microstructures and chemical composition of those materials are easily destroyed in a Harsh Environment, resulting in materials losing the superhydrophobicity as well as the oil/water separation function. In this paper, a kind of rough microstructures was formed on polytetrafluoroethylene (PTFE) sheet by femtosecond laser treatment. The rough surfaces showed durable superhydrophobicity and ultralow water adhesion even after storing in various Harsh Environment for a long time, including strong acid, strong alkali, and high temperature. A micro-through-holes array was further generated on the rough superhydrophobic PTFE film by a subsequent mechanical drilling process. The resultant sample was successfully applied in the field of oil/water separation due to the inverse superhydrophobicity and superoleophilicity. The designed separation system is also very efficient to separate the mixtures of oil and corrosive acid/alkali solutions, exhibiting the strong potential for practical application.
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femtosecond laser ablated durable superhydrophobic ptfe films with micro through holes for oil water separation separating oil from water and corrosive solutions
Applied Surface Science, 2016Co-Authors: Jiale Yong, Yao Fang, Feng Chen, Qing Yang, Hao Bian, Guangqing DuAbstract:Abstract Separating the mixture of water and oil by the superhydrophobic porous materials has attracted increasing research interests; however, the surface microstructures and chemical composition of those materials are easily destroyed in a Harsh Environment, resulting in materials losing the superhydrophobicity as well as the oil/water separation function. In this paper, a kind of rough microstructures was formed on polytetrafluoroethylene (PTFE) sheet by femtosecond laser treatment. The rough surfaces showed durable superhydrophobicity and ultralow water adhesion even after storing in various Harsh Environment for a long time, including strong acid, strong alkali, and high temperature. A micro-through-holes array was further generated on the rough superhydrophobic PTFE film by a subsequent mechanical drilling process. The resultant sample was successfully applied in the field of oil/water separation due to the inverse superhydrophobicity and superoleophilicity. The designed separation system is also very efficient to separate the mixtures of oil and corrosive acid/alkali solutions, exhibiting the strong potential for practical application.
Guangqing Du - One of the best experts on this subject based on the ideXlab platform.
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femtosecond laser ablated durable superhydrophobic ptfe films with micro through holes for oil water separation separating oil from water and corrosive solutions
Applied Surface Science, 2016Co-Authors: Jiale Yong, Yao Fang, Feng Chen, Qing Yang, Hao Bian, Guangqing DuAbstract:Abstract Separating the mixture of water and oil by the superhydrophobic porous materials has attracted increasing research interests; however, the surface microstructures and chemical composition of those materials are easily destroyed in a Harsh Environment, resulting in materials losing the superhydrophobicity as well as the oil/water separation function. In this paper, a kind of rough microstructures was formed on polytetrafluoroethylene (PTFE) sheet by femtosecond laser treatment. The rough surfaces showed durable superhydrophobicity and ultralow water adhesion even after storing in various Harsh Environment for a long time, including strong acid, strong alkali, and high temperature. A micro-through-holes array was further generated on the rough superhydrophobic PTFE film by a subsequent mechanical drilling process. The resultant sample was successfully applied in the field of oil/water separation due to the inverse superhydrophobicity and superoleophilicity. The designed separation system is also very efficient to separate the mixtures of oil and corrosive acid/alkali solutions, exhibiting the strong potential for practical application.
Xun Hou - One of the best experts on this subject based on the ideXlab platform.
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femtosecond laser ablated durable superhydrophobic ptfe films with micro through holes for oil water separation separating oil from water and corrosive solutions
Applied Surface Science, 2016Co-Authors: Jiale Yong, Yao Fang, Feng Chen, Jinglan Huo, Qing Yang, Hao Bian, Xun HouAbstract:Abstract Separating the mixture of water and oil by the superhydrophobic porous materials has attracted increasing research interests; however, the surface microstructures and chemical composition of those materials are easily destroyed in a Harsh Environment, resulting in materials losing the superhydrophobicity as well as the oil/water separation function. In this paper, a kind of rough microstructures was formed on polytetrafluoroethylene (PTFE) sheet by femtosecond laser treatment. The rough surfaces showed durable superhydrophobicity and ultralow water adhesion even after storing in various Harsh Environment for a long time, including strong acid, strong alkali, and high temperature. A micro-through-holes array was further generated on the rough superhydrophobic PTFE film by a subsequent mechanical drilling process. The resultant sample was successfully applied in the field of oil/water separation due to the inverse superhydrophobicity and superoleophilicity. The designed separation system is also very efficient to separate the mixtures of oil and corrosive acid/alkali solutions, exhibiting the strong potential for practical application.
