Pub Date : 2004-01-01DOI: 10.1109/ICSENS.2004.1426232
T. Omori, K. Hashimoto, M. Yamaguchi
The paper proposes a simple distributed vibration sensor system which employs an optical fibre ring interferometer having an additional sub-loop coupled to the main ring by a 3 dB coupler. Comparing multiple responses of interfered beams by the light travelling n times in the sub-loop with each other, the proposed system can detect the position as well as the amplitude of acoustic vibration occurred in the main ring. The multiple responses are easily extracted in the time domain by driving an optical source with a pulsed current. It is demonstrated theoretically and experimentally that the proposed system is able to detect both the amplitude and position of the acoustic vibration occurring in the main ring with reasonable accuracy.
{"title":"A position-detectable optical distributed vibration sensor using an additional sub-loop","authors":"T. Omori, K. Hashimoto, M. Yamaguchi","doi":"10.1109/ICSENS.2004.1426232","DOIUrl":"https://doi.org/10.1109/ICSENS.2004.1426232","url":null,"abstract":"The paper proposes a simple distributed vibration sensor system which employs an optical fibre ring interferometer having an additional sub-loop coupled to the main ring by a 3 dB coupler. Comparing multiple responses of interfered beams by the light travelling n times in the sub-loop with each other, the proposed system can detect the position as well as the amplitude of acoustic vibration occurred in the main ring. The multiple responses are easily extracted in the time domain by driving an optical source with a pulsed current. It is demonstrated theoretically and experimentally that the proposed system is able to detect both the amplitude and position of the acoustic vibration occurring in the main ring with reasonable accuracy.","PeriodicalId":20476,"journal":{"name":"Proceedings of IEEE Sensors, 2004.","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2004-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82748805","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2004-01-01DOI: 10.1109/ICSENS.2004.1426184
M. Penza, G. Cassano, P. Aversa, F. Antolini, A. Cusano, M. Consales, M. Giordano, L. Nicolais
We investigate the sensing properties of single-walled carbon nanotube (SWCNTs) films used as nanostructured materials for chemical sensors onto three types of transducers using different principles of operation. These are surface acoustic waves (SAWs), quartz crystal microbalance (QCM) and standard silica optical fiber (SOF) for detection of organic solvents, at room temperature. The sensing probes have been configured as a 315- and 433-MHz SAW two-port resonator based oscillator, 10 MHz QCM resonator, and SOF light-reflectometry based system at a wavelength of 1310 nm. A nanocomposite film of SWCNTs embedded in a cadmium arachidate (CdA) matrix was deposited by an LB technique onto SAW sensors. An LB multilayer of SWCNTs-onto-CdA buffer material was also deposited onto QCM and SOF sensors. Our experiments demonstrate that carbon nanotube acoustic and optical sensors are highly sensitive to a wide range of polar and non-polar organic solvents up to a sub-ppm detection limit.
{"title":"Acoustic and optical sensors incorporating carbon nanotubes for detection of organic solvents","authors":"M. Penza, G. Cassano, P. Aversa, F. Antolini, A. Cusano, M. Consales, M. Giordano, L. Nicolais","doi":"10.1109/ICSENS.2004.1426184","DOIUrl":"https://doi.org/10.1109/ICSENS.2004.1426184","url":null,"abstract":"We investigate the sensing properties of single-walled carbon nanotube (SWCNTs) films used as nanostructured materials for chemical sensors onto three types of transducers using different principles of operation. These are surface acoustic waves (SAWs), quartz crystal microbalance (QCM) and standard silica optical fiber (SOF) for detection of organic solvents, at room temperature. The sensing probes have been configured as a 315- and 433-MHz SAW two-port resonator based oscillator, 10 MHz QCM resonator, and SOF light-reflectometry based system at a wavelength of 1310 nm. A nanocomposite film of SWCNTs embedded in a cadmium arachidate (CdA) matrix was deposited by an LB technique onto SAW sensors. An LB multilayer of SWCNTs-onto-CdA buffer material was also deposited onto QCM and SOF sensors. Our experiments demonstrate that carbon nanotube acoustic and optical sensors are highly sensitive to a wide range of polar and non-polar organic solvents up to a sub-ppm detection limit.","PeriodicalId":20476,"journal":{"name":"Proceedings of IEEE Sensors, 2004.","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2004-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89620328","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2004-01-01DOI: 10.1109/ICSENS.2004.1426143
V. Iordanov, Blagoi P. Iliev, Victor Joseph, Andre Bossche, Jeroen, Bastemeijer, P. Sarro, Ian T. Young, G. Dedem, M. Vellekoop
This paper presents thermal analysis verification of a sensorized 50 nl reactor chamber for DNA amplification based on PCR (polymerase chain reaction). The reactor is equipped with an integrated heater, temperature sensor and a photo detector for real time detection. Through micromachining, the thermal capacity of each chamber is minimized, enabling rapid PCR cycling. The proposed structure was implemented on a silicon substrate using a standard CMOS process and postprocessing. The chambers have a bottom area of 500/spl times/500 /spl mu/m/sup 2/ and a pitch of 1 mm. An array of 96 reactors can be formed on a square centimeter. In order to reach the required PCR temperature levels (55/spl deg/C, 75/spl deg/C and 92/spl deg/C) dedicated electronics, based on a proportional-integral (PI) controller were designed and built. The system is capable of stabilizing the temperature of the reactor and performing a temperature sweep up to 100/spl deg/C.
{"title":"Sensorized nanoliter reactor chamber for DNA multiplication","authors":"V. Iordanov, Blagoi P. Iliev, Victor Joseph, Andre Bossche, Jeroen, Bastemeijer, P. Sarro, Ian T. Young, G. Dedem, M. Vellekoop","doi":"10.1109/ICSENS.2004.1426143","DOIUrl":"https://doi.org/10.1109/ICSENS.2004.1426143","url":null,"abstract":"This paper presents thermal analysis verification of a sensorized 50 nl reactor chamber for DNA amplification based on PCR (polymerase chain reaction). The reactor is equipped with an integrated heater, temperature sensor and a photo detector for real time detection. Through micromachining, the thermal capacity of each chamber is minimized, enabling rapid PCR cycling. The proposed structure was implemented on a silicon substrate using a standard CMOS process and postprocessing. The chambers have a bottom area of 500/spl times/500 /spl mu/m/sup 2/ and a pitch of 1 mm. An array of 96 reactors can be formed on a square centimeter. In order to reach the required PCR temperature levels (55/spl deg/C, 75/spl deg/C and 92/spl deg/C) dedicated electronics, based on a proportional-integral (PI) controller were designed and built. The system is capable of stabilizing the temperature of the reactor and performing a temperature sweep up to 100/spl deg/C.","PeriodicalId":20476,"journal":{"name":"Proceedings of IEEE Sensors, 2004.","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2004-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89701036","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2004-01-01DOI: 10.1109/ICSENS.2004.1426111
L. Zipser, H. Franke, W. Bretschneider
Most conventional humidity sensors are unfortunately sensitive to extreme process and environmental conditions. This paper concerns the development of a robust acoustic humidity sensor which can be used even under extreme conditions, such as high temperature up to 300/spl deg/C, aggressive, explosive or toxic pollutions in the gas to be analysed, dust, electromagnetic disturbances, nuclear radiation or very fast changes of the humidity concentration. An important application of the sensor is the in-situ measurement of humidity in the exhaust air of industrial driers for paperboard production.
{"title":"Robust acoustic humidity sensor for industrial drying","authors":"L. Zipser, H. Franke, W. Bretschneider","doi":"10.1109/ICSENS.2004.1426111","DOIUrl":"https://doi.org/10.1109/ICSENS.2004.1426111","url":null,"abstract":"Most conventional humidity sensors are unfortunately sensitive to extreme process and environmental conditions. This paper concerns the development of a robust acoustic humidity sensor which can be used even under extreme conditions, such as high temperature up to 300/spl deg/C, aggressive, explosive or toxic pollutions in the gas to be analysed, dust, electromagnetic disturbances, nuclear radiation or very fast changes of the humidity concentration. An important application of the sensor is the in-situ measurement of humidity in the exhaust air of industrial driers for paperboard production.","PeriodicalId":20476,"journal":{"name":"Proceedings of IEEE Sensors, 2004.","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2004-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89217174","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2004-01-01DOI: 10.1109/ICSENS.2004.1426240
Chih-Hsiung Shen, Bo Wang
Recently, a novel signal processing theory related to noise has grown and been proven. A new high performance thermopile based on the noise added scheme has been realized by an embedded heater for a CMOS compatible thermoelectric infrared sensor. Certain complex systems can improve performance with added optimal noise that classical theory cannot explain. To that end, we are using noise in a remote temperature sensing system to enhance its function without altering the system. Thermopile sensors are designed and fabricated using 1.2 /spl mu/m CMOS IC technology combined with a subsequent anisotropic front-side etching. We first develop an active thermopile with an embedded heater which is easily and naturally driven by a noise generation circuit. The stochastic resonance theory can be realized as a reduction in the temperature detection threshold. We have greatly improved the performance of the remote temperature sensing system in the presence of noise. Stochastic resonance can reduce threshold detection resolution and greatly improve the temperature detection limit with a low cost scheme without using a higher resolution ADC.
近年来，一种新的与噪声相关的信号处理理论得到了发展和验证。利用嵌入式加热器为CMOS兼容热电红外传感器实现了一种新型的基于加噪方案的高性能热电堆。某些复杂系统可以通过添加经典理论无法解释的最佳噪声来提高性能。为此，我们在不改变系统的情况下，在远程温度传感系统中使用噪声来增强其功能。热电堆传感器的设计和制造采用1.2 /spl μ m CMOS集成电路技术，并结合随后的各向异性正面蚀刻。我们首先开发了一种带有嵌入式加热器的有源热电堆，该热电堆易于自然地由噪声产生电路驱动。随机共振理论可以通过降低温度检测阈值来实现。我们极大地改善了存在噪声的远程温度传感系统的性能。随机共振可以在不使用高分辨率ADC的情况下以低成本方案降低阈值检测分辨率并大大提高温度检测极限。
{"title":"A high performance CMOS compatible thermopile based on noise added mechanism","authors":"Chih-Hsiung Shen, Bo Wang","doi":"10.1109/ICSENS.2004.1426240","DOIUrl":"https://doi.org/10.1109/ICSENS.2004.1426240","url":null,"abstract":"Recently, a novel signal processing theory related to noise has grown and been proven. A new high performance thermopile based on the noise added scheme has been realized by an embedded heater for a CMOS compatible thermoelectric infrared sensor. Certain complex systems can improve performance with added optimal noise that classical theory cannot explain. To that end, we are using noise in a remote temperature sensing system to enhance its function without altering the system. Thermopile sensors are designed and fabricated using 1.2 /spl mu/m CMOS IC technology combined with a subsequent anisotropic front-side etching. We first develop an active thermopile with an embedded heater which is easily and naturally driven by a noise generation circuit. The stochastic resonance theory can be realized as a reduction in the temperature detection threshold. We have greatly improved the performance of the remote temperature sensing system in the presence of noise. Stochastic resonance can reduce threshold detection resolution and greatly improve the temperature detection limit with a low cost scheme without using a higher resolution ADC.","PeriodicalId":20476,"journal":{"name":"Proceedings of IEEE Sensors, 2004.","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2004-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89443845","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2004-01-01DOI: 10.1109/ICSENS.2004.1426321
I. Leonte, M. Hunt, G. Sehra, M. Cole, J. Gardner, H. Noh, P. Hesketh
The paper describes both semi-wireless and wireless (433 MHz) liquid sensing systems based upon dual shear horizontal surface acoustic wave (SH-SAW) devices and introduces a novel design concept and a novel principle of detection. Each system comprises an uncoated passive SH-SAW device, a liquid microcell, a device antenna and an associated signal processing unit. The LiTaO/sub 3/-based SH-SAW sensors have dual delay line configurations with different path lengths, the principle of detection being the attenuation and time delay between the signals. The sensors have no biochemical selective layer making them non-specific but create a robust/durable and low-cost system. This sensing system may be applied in the food/beverage industry, medical applications; a functionalized coating can be added for more specific biological applications.
{"title":"Towards a wireless microsystem for liquid analysis","authors":"I. Leonte, M. Hunt, G. Sehra, M. Cole, J. Gardner, H. Noh, P. Hesketh","doi":"10.1109/ICSENS.2004.1426321","DOIUrl":"https://doi.org/10.1109/ICSENS.2004.1426321","url":null,"abstract":"The paper describes both semi-wireless and wireless (433 MHz) liquid sensing systems based upon dual shear horizontal surface acoustic wave (SH-SAW) devices and introduces a novel design concept and a novel principle of detection. Each system comprises an uncoated passive SH-SAW device, a liquid microcell, a device antenna and an associated signal processing unit. The LiTaO/sub 3/-based SH-SAW sensors have dual delay line configurations with different path lengths, the principle of detection being the attenuation and time delay between the signals. The sensors have no biochemical selective layer making them non-specific but create a robust/durable and low-cost system. This sensing system may be applied in the food/beverage industry, medical applications; a functionalized coating can be added for more specific biological applications.","PeriodicalId":20476,"journal":{"name":"Proceedings of IEEE Sensors, 2004.","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2004-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88006151","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2004-01-01DOI: 10.1109/ICSENS.2004.1426194
Bogdan Kreczmer
This paper presents an approach allowing us to distinguish walls and corners using only a single emission of an ultrasonic wave. In the presented approach, an ultrasonic beam without rotational symmetry is employed. The beam is created by a linear array of three sonars. It causes the amplitude of echoes received by separate sonars to be distinctly different for a single and double reflection.
{"title":"Objects distinguishing by using a flattened ultrasonic beam","authors":"Bogdan Kreczmer","doi":"10.1109/ICSENS.2004.1426194","DOIUrl":"https://doi.org/10.1109/ICSENS.2004.1426194","url":null,"abstract":"This paper presents an approach allowing us to distinguish walls and corners using only a single emission of an ultrasonic wave. In the presented approach, an ultrasonic beam without rotational symmetry is employed. The beam is created by a linear array of three sonars. It causes the amplitude of echoes received by separate sonars to be distinctly different for a single and double reflection.","PeriodicalId":20476,"journal":{"name":"Proceedings of IEEE Sensors, 2004.","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2004-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88021923","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2004-01-01DOI: 10.1109/ICSENS.2004.1426397
I. Hidalgo, R. Goya, I. Matías
We have tested the viability of fabrication of evanescent sensors using tapered hollow-core fiber (HCF). Two different methods were used to build these sensors: the first one, using a hydrogel as the sensing coating; the second one, by means of the electrostatic self-assembly method for the deposition of thin films on the surface of the hollow-core fiber. In both cases, in order to demonstrate the phenomenon, humidity sensors were fabricated.
{"title":"Humidity evanescent hollow core fiber sensor","authors":"I. Hidalgo, R. Goya, I. Matías","doi":"10.1109/ICSENS.2004.1426397","DOIUrl":"https://doi.org/10.1109/ICSENS.2004.1426397","url":null,"abstract":"We have tested the viability of fabrication of evanescent sensors using tapered hollow-core fiber (HCF). Two different methods were used to build these sensors: the first one, using a hydrogel as the sensing coating; the second one, by means of the electrostatic self-assembly method for the deposition of thin films on the surface of the hollow-core fiber. In both cases, in order to demonstrate the phenomenon, humidity sensors were fabricated.","PeriodicalId":20476,"journal":{"name":"Proceedings of IEEE Sensors, 2004.","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2004-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88554980","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2004-01-01DOI: 10.1109/ICSENS.2004.1426176
P. Benes, S. Klusacek, P. Pikal
A new principle of particle size distribution measurement is described. We analyze the acoustic emission signal generated by a flow of particles impacting on a fixed obstacle. Changes of the power spectral density of the signal are well correlated with the particle size distribution. Our method was successfully used for measurement of particle size distribution in the range from 1 mm to 10 mm of ferrous sulphate monohydrate in a real chemistry process. Particles were measured at the output of the dry kiln (temperature 150-200/spl deg/C, mass flow 4 tons/hour), where it is not possible to use any other known principles such as particle vision, laser diffraction analyzers, ultrasonic analyzers, focused-beam reflectance measurement etc.
{"title":"In process measurement of particle size distribution","authors":"P. Benes, S. Klusacek, P. Pikal","doi":"10.1109/ICSENS.2004.1426176","DOIUrl":"https://doi.org/10.1109/ICSENS.2004.1426176","url":null,"abstract":"A new principle of particle size distribution measurement is described. We analyze the acoustic emission signal generated by a flow of particles impacting on a fixed obstacle. Changes of the power spectral density of the signal are well correlated with the particle size distribution. Our method was successfully used for measurement of particle size distribution in the range from 1 mm to 10 mm of ferrous sulphate monohydrate in a real chemistry process. Particles were measured at the output of the dry kiln (temperature 150-200/spl deg/C, mass flow 4 tons/hour), where it is not possible to use any other known principles such as particle vision, laser diffraction analyzers, ultrasonic analyzers, focused-beam reflectance measurement etc.","PeriodicalId":20476,"journal":{"name":"Proceedings of IEEE Sensors, 2004.","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2004-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76110296","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2004-01-01DOI: 10.1109/ICSENS.2004.1426242
L. Supriya, R. Claus
A method for the fabrication of conductive gold electrodes on flexible polymer substrates, using a solution-based self-assembly process, has been developed. This involves the use of functionalized silanes with amino- or mercapto-groups to anchor the gold to the substrate. Colloidal gold particles are deposited from solution and the formation of a conductive film is achieved by reducing more gold onto the attached particles by a "seeding" process. Conductive films have been successfully deposited on materials like Kapton and polyethylene with a surface resistance of 1/spl Omega//sq and good adhesion properties. Films have also been deposited on Nafion, an ionic polymer used in polymer actuators and sensors, for the fabrication of polymer transducers. Preliminary tests using these electrodes on Nafion show sensing and actuation behavior.
{"title":"Fabrication of electrodes for polymer actuators and sensors via self-assembly","authors":"L. Supriya, R. Claus","doi":"10.1109/ICSENS.2004.1426242","DOIUrl":"https://doi.org/10.1109/ICSENS.2004.1426242","url":null,"abstract":"A method for the fabrication of conductive gold electrodes on flexible polymer substrates, using a solution-based self-assembly process, has been developed. This involves the use of functionalized silanes with amino- or mercapto-groups to anchor the gold to the substrate. Colloidal gold particles are deposited from solution and the formation of a conductive film is achieved by reducing more gold onto the attached particles by a \"seeding\" process. Conductive films have been successfully deposited on materials like Kapton and polyethylene with a surface resistance of 1/spl Omega//sq and good adhesion properties. Films have also been deposited on Nafion, an ionic polymer used in polymer actuators and sensors, for the fabrication of polymer transducers. Preliminary tests using these electrodes on Nafion show sensing and actuation behavior.","PeriodicalId":20476,"journal":{"name":"Proceedings of IEEE Sensors, 2004.","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2004-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83913386","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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