Pub Date : 2006-01-01DOI: 10.1109/NEMS.2006.334896
H. Zeng, Z. Zhao, Haifeng Dong, Z. Fang, Peng Guo
MEMS/NEMS based integrated sensors for humidity, temperature and pressure used in environment monitoring are usually combined by separate devices for complicated technology and material compatibility. In order to lower cost, polyimide (PI) was introduced in to fabricate integrated sensors realizing IC compatible process. Different humidity electrodes have been investigated and a humidity sensor with a sensitivity of 2.375pF/RH% during 20~90%RH is fabricated. Performance in high humidity is compensated by temperature elements, which shows excellent linearity from -20degC to 100degC. Polyimide and nitride diaphragm was used to measure external pressure, which achieves a sensitivity of 1.1 mV/degC and an accuracy of 0.06 kPa.
{"title":"Fabrication and Test of MEMS/NEMS based Polyimide Integrated Humidity, Temperature and Pressure Sensor","authors":"H. Zeng, Z. Zhao, Haifeng Dong, Z. Fang, Peng Guo","doi":"10.1109/NEMS.2006.334896","DOIUrl":"https://doi.org/10.1109/NEMS.2006.334896","url":null,"abstract":"MEMS/NEMS based integrated sensors for humidity, temperature and pressure used in environment monitoring are usually combined by separate devices for complicated technology and material compatibility. In order to lower cost, polyimide (PI) was introduced in to fabricate integrated sensors realizing IC compatible process. Different humidity electrodes have been investigated and a humidity sensor with a sensitivity of 2.375pF/RH% during 20~90%RH is fabricated. Performance in high humidity is compensated by temperature elements, which shows excellent linearity from -20degC to 100degC. Polyimide and nitride diaphragm was used to measure external pressure, which achieves a sensitivity of 1.1 mV/degC and an accuracy of 0.06 kPa.","PeriodicalId":6362,"journal":{"name":"2006 1st IEEE International Conference on Nano/Micro Engineered and Molecular Systems","volume":"29 2","pages":"788-791"},"PeriodicalIF":0.0,"publicationDate":"2006-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72574161","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 : 2006-01-01DOI: 10.1109/NEMS.2006.334758
Yangmin Li, Qingsong Xu
In this paper, a new parallel nanopositioner (PNP) employing a spatial compliant parallel manipulator has been proposed due to the excellent accuracy of parallel mechanisms and flexure hinges. The system is established by a proper selection of hardware and analyzed based upon the derived pseudo-rigid-body model. In view of the physical constraints imposed by both the piezoelectric actuators and flexure hinges, the PNP's reachable workspace is determined analytically, where a maximum cylinder defined as usable workspace can be inscribed. Moreover, the optimal design of the PNP with the consideration of the usable workspace size and global dexterity index simultaneously is carried out so as to make a compromise between the two separate performances by utilizing the efficient genetic algorithm. And the optimization results will be valuable in the design of a new nanopositioner
{"title":"Optimal Design of a New Nanopositioner using Genetic Algorithm","authors":"Yangmin Li, Qingsong Xu","doi":"10.1109/NEMS.2006.334758","DOIUrl":"https://doi.org/10.1109/NEMS.2006.334758","url":null,"abstract":"In this paper, a new parallel nanopositioner (PNP) employing a spatial compliant parallel manipulator has been proposed due to the excellent accuracy of parallel mechanisms and flexure hinges. The system is established by a proper selection of hardware and analyzed based upon the derived pseudo-rigid-body model. In view of the physical constraints imposed by both the piezoelectric actuators and flexure hinges, the PNP's reachable workspace is determined analytically, where a maximum cylinder defined as usable workspace can be inscribed. Moreover, the optimal design of the PNP with the consideration of the usable workspace size and global dexterity index simultaneously is carried out so as to make a compromise between the two separate performances by utilizing the efficient genetic algorithm. And the optimization results will be valuable in the design of a new nanopositioner","PeriodicalId":6362,"journal":{"name":"2006 1st IEEE International Conference on Nano/Micro Engineered and Molecular Systems","volume":"85 1","pages":"357-362"},"PeriodicalIF":0.0,"publicationDate":"2006-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80006893","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 : 2006-01-01DOI: 10.1109/NEMS.2006.334888
Man Lee, L. Cheung, Yi-Kuen Lee, Y. Zohar
A thermal microsystem, integrated with pressure and temperature microsensors, is fabricated to study convective boiling under nearly uniform heat flux boundary condition. The temperature and pressure distribution along the microchannel is measured correspondingly. The pressure increases with input power when two phase flow develops. A pressure peak appears at the location of liquid-vapor interface region. The transient temperature and pressure fluctuation is also measured. The dominant frequencies of the temperature and pressure fluctuation are the same values at the liquid-vapor interface region and this dominant frequencies increase with input power. Simultaneously, the qualitative visualizations of the evolving flow patterns have been correlated with the quantitative temperature and pressure measurements.
{"title":"Two-Phase Flow in Microchannel Heat Sink with Nearly Uniform Heat Flux Boundary Condition","authors":"Man Lee, L. Cheung, Yi-Kuen Lee, Y. Zohar","doi":"10.1109/NEMS.2006.334888","DOIUrl":"https://doi.org/10.1109/NEMS.2006.334888","url":null,"abstract":"A thermal microsystem, integrated with pressure and temperature microsensors, is fabricated to study convective boiling under nearly uniform heat flux boundary condition. The temperature and pressure distribution along the microchannel is measured correspondingly. The pressure increases with input power when two phase flow develops. A pressure peak appears at the location of liquid-vapor interface region. The transient temperature and pressure fluctuation is also measured. The dominant frequencies of the temperature and pressure fluctuation are the same values at the liquid-vapor interface region and this dominant frequencies increase with input power. Simultaneously, the qualitative visualizations of the evolving flow patterns have been correlated with the quantitative temperature and pressure measurements.","PeriodicalId":6362,"journal":{"name":"2006 1st IEEE International Conference on Nano/Micro Engineered and Molecular Systems","volume":"81 1","pages":"752-756"},"PeriodicalIF":0.0,"publicationDate":"2006-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82475198","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 : 2006-01-01DOI: 10.1109/NEMS.2006.334657
J. Pan, Jianning Ding, Wenming Yang, Detao Li, H. Xue
The design and testing of micro thermophotovoltaic (micro-TPV) system is described in this paper. The system is made of a SiC emitter, a dielectric filter and a GaSb photovoltaic cell array. The open-circuit voltage and short-circuit current can be measured by a multimeter, and the output power can be calculated. The effect of mass flux and the distance between the PV cell and outer wall of the combustor on the output power is also analyzed. When the flow rate of hydrogen is 4.133 g/hr and the H2/O2 ratio is 1.8, the micro-TPV system is able to deliver an electrical power output of 1.355W in a micro combustor of 0.195 cm3 in volume. The open-circuit electrical voltage and short-circuit current are 1.85 V and 1.032 amp respectively. This work makes it possible for us to replace batteries with micro-TPV systems as the power of micro mechanical devices in near future
{"title":"Design Conceits and Testing of a Prototype Micro Thermophotovoltaic System","authors":"J. Pan, Jianning Ding, Wenming Yang, Detao Li, H. Xue","doi":"10.1109/NEMS.2006.334657","DOIUrl":"https://doi.org/10.1109/NEMS.2006.334657","url":null,"abstract":"The design and testing of micro thermophotovoltaic (micro-TPV) system is described in this paper. The system is made of a SiC emitter, a dielectric filter and a GaSb photovoltaic cell array. The open-circuit voltage and short-circuit current can be measured by a multimeter, and the output power can be calculated. The effect of mass flux and the distance between the PV cell and outer wall of the combustor on the output power is also analyzed. When the flow rate of hydrogen is 4.133 g/hr and the H2/O2 ratio is 1.8, the micro-TPV system is able to deliver an electrical power output of 1.355W in a micro combustor of 0.195 cm3 in volume. The open-circuit electrical voltage and short-circuit current are 1.85 V and 1.032 amp respectively. This work makes it possible for us to replace batteries with micro-TPV systems as the power of micro mechanical devices in near future","PeriodicalId":6362,"journal":{"name":"2006 1st IEEE International Conference on Nano/Micro Engineered and Molecular Systems","volume":"31 1","pages":"144-148"},"PeriodicalIF":0.0,"publicationDate":"2006-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81226033","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 : 2006-01-01DOI: 10.1109/NEMS.2006.334627
Chunwei Yang, Xin-guo Hu, Yong Zhang
A facile approach to the surface oxidation of multi-walled carbon nanotubes (MWCNTs) is presented using oxidation solution to decorating MWCNTs, sonication to promote this effect and increase the population density of surface oxide groups. The sonication short time for MWCNTs oxidation /functionalization is desirable for minimizing structural damage to the MWCNTs that could lead to changes in their properties. The measurement results of XPS, IR and Raman spectrum have verified that a great lot of functional groups had been decorated on MWCNTs. During the MWCNTs oxidation, the hydroxy, carbonyl and carboxy formed on the surface of MWCNTs. MWCNTs treated in the nitric and sulfuric acids had more functional groups than MWCNTs treated in hydrogen peroxide and sulfuric acids
{"title":"A Study of the Functionalization on Multi-walled Carbon nanotubes","authors":"Chunwei Yang, Xin-guo Hu, Yong Zhang","doi":"10.1109/NEMS.2006.334627","DOIUrl":"https://doi.org/10.1109/NEMS.2006.334627","url":null,"abstract":"A facile approach to the surface oxidation of multi-walled carbon nanotubes (MWCNTs) is presented using oxidation solution to decorating MWCNTs, sonication to promote this effect and increase the population density of surface oxide groups. The sonication short time for MWCNTs oxidation /functionalization is desirable for minimizing structural damage to the MWCNTs that could lead to changes in their properties. The measurement results of XPS, IR and Raman spectrum have verified that a great lot of functional groups had been decorated on MWCNTs. During the MWCNTs oxidation, the hydroxy, carbonyl and carboxy formed on the surface of MWCNTs. MWCNTs treated in the nitric and sulfuric acids had more functional groups than MWCNTs treated in hydrogen peroxide and sulfuric acids","PeriodicalId":6362,"journal":{"name":"2006 1st IEEE International Conference on Nano/Micro Engineered and Molecular Systems","volume":"37 1","pages":"83-86"},"PeriodicalIF":0.0,"publicationDate":"2006-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82510728","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 : 2006-01-01DOI: 10.1109/NEMS.2006.334624
Sen Zhang, C. Deng
This paper presents the effect of the nanometer additive on the performance of the electrodes in secondary nickel metal hydride battery. The influence of the nanometer additive on discharge storage capacity of the electrode is studied and the electrochemical property of hydride electrode is investigated. Galvanostatic tests indicate that the nanometer additive incorporated electrode exhibits better high rate discharge capability, superior charge acceptance ability and longer cycle life compared with the blank electrode. The nanometer additive greatly decreases the weight and volume of the secondary battery, and makes it better meet the requirement as power sources for electric and hybrid vehicles
{"title":"Study on the Novel Nanometer Additive for Secondary Batteries","authors":"Sen Zhang, C. Deng","doi":"10.1109/NEMS.2006.334624","DOIUrl":"https://doi.org/10.1109/NEMS.2006.334624","url":null,"abstract":"This paper presents the effect of the nanometer additive on the performance of the electrodes in secondary nickel metal hydride battery. The influence of the nanometer additive on discharge storage capacity of the electrode is studied and the electrochemical property of hydride electrode is investigated. Galvanostatic tests indicate that the nanometer additive incorporated electrode exhibits better high rate discharge capability, superior charge acceptance ability and longer cycle life compared with the blank electrode. The nanometer additive greatly decreases the weight and volume of the secondary battery, and makes it better meet the requirement as power sources for electric and hybrid vehicles","PeriodicalId":6362,"journal":{"name":"2006 1st IEEE International Conference on Nano/Micro Engineered and Molecular Systems","volume":"40 1","pages":"70-73"},"PeriodicalIF":0.0,"publicationDate":"2006-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81480899","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 : 2006-01-01DOI: 10.1109/NEMS.2006.334879
Rong-jin Yan, Qing-kang Wang
To improve the light-extraction-efficiency of organic light emitting diode (OLED), we introduced novel photonic crystal slab (PCS) structures with Taper unit cells into the interface of ITO layer and glass substrate. By optimizing the geometric parameters, we proved that the PCS with triangular lattice of Taper cells was more effective in reducing the energy of guided wave trapped in OLED than the traditional PCS structures. Light-extraction-efficiency of OLED based on this PCS increased by 95.26%. Physical mechanisms of light- extraction-efficiency enhancement in these structures are further discussed.
{"title":"Enhancement of Light Extraction Efficiency in OLED with Periodic Nano-Structure","authors":"Rong-jin Yan, Qing-kang Wang","doi":"10.1109/NEMS.2006.334879","DOIUrl":"https://doi.org/10.1109/NEMS.2006.334879","url":null,"abstract":"To improve the light-extraction-efficiency of organic light emitting diode (OLED), we introduced novel photonic crystal slab (PCS) structures with Taper unit cells into the interface of ITO layer and glass substrate. By optimizing the geometric parameters, we proved that the PCS with triangular lattice of Taper cells was more effective in reducing the energy of guided wave trapped in OLED than the traditional PCS structures. Light-extraction-efficiency of OLED based on this PCS increased by 95.26%. Physical mechanisms of light- extraction-efficiency enhancement in these structures are further discussed.","PeriodicalId":6362,"journal":{"name":"2006 1st IEEE International Conference on Nano/Micro Engineered and Molecular Systems","volume":"64 1","pages":"713-716"},"PeriodicalIF":0.0,"publicationDate":"2006-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85743629","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 : 2006-01-01DOI: 10.1109/NEMS.2006.334601
Youngkwan Lee, Suk-Han Lee, Youn-J. Kim, Hunmo Kim
In this paper, flow control of nano fountain pen using active membrane pumping is investigated. DPN (Dip Pen Nano- Lithography) has a shortcoming in which is the need of frequent loading and unloading while coating for broadband patterning. This issue is caused by a limit in quantity of ink, which is tied on the tip surface. The control of fluid injection using active membrane pumping in chambers is the answer of the problem. The flow rates in channels with the presence of capillary force are analyzed including the cantilever deflection and the control of mass flow rates by deflection of membrane. Finally, in this paper, the membrane deflection using a nano indentation equipment has been experimentally examined.
{"title":"A Novel Passive Membrane Pumping Nano Fountain-Pen","authors":"Youngkwan Lee, Suk-Han Lee, Youn-J. Kim, Hunmo Kim","doi":"10.1109/NEMS.2006.334601","DOIUrl":"https://doi.org/10.1109/NEMS.2006.334601","url":null,"abstract":"In this paper, flow control of nano fountain pen using active membrane pumping is investigated. DPN (Dip Pen Nano- Lithography) has a shortcoming in which is the need of frequent loading and unloading while coating for broadband patterning. This issue is caused by a limit in quantity of ink, which is tied on the tip surface. The control of fluid injection using active membrane pumping in chambers is the answer of the problem. The flow rates in channels with the presence of capillary force are analyzed including the cantilever deflection and the control of mass flow rates by deflection of membrane. Finally, in this paper, the membrane deflection using a nano indentation equipment has been experimentally examined.","PeriodicalId":6362,"journal":{"name":"2006 1st IEEE International Conference on Nano/Micro Engineered and Molecular Systems","volume":"104 1","pages":"1012-1017"},"PeriodicalIF":0.0,"publicationDate":"2006-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88964307","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 : 2006-01-01DOI: 10.1109/NEMS.2006.334797
Xianfang Zhu, M.G. Gupta, G. Lu
Single wall carbon nanotubes are fabricated by a long pulse and high power Nd:YAG laser ablation from a solid composite target consisting of graphite and bimetallic catalyst at room temperature without any carrying gas flow. The results demonstrated that the technique could eliminate several processing parameters currently used for SWNT fabrication via laser ablation process. Most importantly, the new process can produce well-dispersed, straight, and clean SWNTs, rather than bundled and deformed SWNTs coated with bimetals and amorphous carbon nanoparticles. A mechanism is suggested for such an improved SWNT growth
{"title":"Advanced Fabrication of Single Wall Carbon Nanotubes by Laser Ablation with Reduced Number of Parameters","authors":"Xianfang Zhu, M.G. Gupta, G. Lu","doi":"10.1109/NEMS.2006.334797","DOIUrl":"https://doi.org/10.1109/NEMS.2006.334797","url":null,"abstract":"Single wall carbon nanotubes are fabricated by a long pulse and high power Nd:YAG laser ablation from a solid composite target consisting of graphite and bimetallic catalyst at room temperature without any carrying gas flow. The results demonstrated that the technique could eliminate several processing parameters currently used for SWNT fabrication via laser ablation process. Most importantly, the new process can produce well-dispersed, straight, and clean SWNTs, rather than bundled and deformed SWNTs coated with bimetals and amorphous carbon nanoparticles. A mechanism is suggested for such an improved SWNT growth","PeriodicalId":6362,"journal":{"name":"2006 1st IEEE International Conference on Nano/Micro Engineered and Molecular Systems","volume":"35 1","pages":"450-454"},"PeriodicalIF":0.0,"publicationDate":"2006-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87110217","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 : 2006-01-01DOI: 10.1109/NEMS.2006.334638
Wen Wang, Keekeun Lee, Sangsik Yang, Jungsoo Hwang, Geunyoung Kim
This paper presents an optimized design on surface acoustic wave (SAW)-based pressure sensor, which is composed of a broadband reflective delay line and a bond substrate underneath the diaphragm. Using the equivalent circuit model (ECM), the SAW device was simulated, and the effect of inter-digital transducer structure, acoustic aperture and number of finger pairs on the performance of the system was studied. To determine the geometry and configuration of the sensor, Finite Element Method (FEM) was used to calculate the diaphragm bending and stress/strain distribution. From the ECM simulation and FEM analysis, the optimal design parameters were determined, and a new 440 MHz reflective delay line on 41deg YX LiNbO3 was developed, the measured reflection coefficient S11 results in time domain shows a good agreement with simulated one, low loss, sharp reflected peaks and high dynamic separation between the peaks were observed. The SAW device was successfully applied to pressure measurement, and the experiment results approve it is working satisfactorily
{"title":"Optimized Surface Acoustic Wave-based Pressure Sensor Using Equivalent Circuit Model","authors":"Wen Wang, Keekeun Lee, Sangsik Yang, Jungsoo Hwang, Geunyoung Kim","doi":"10.1109/NEMS.2006.334638","DOIUrl":"https://doi.org/10.1109/NEMS.2006.334638","url":null,"abstract":"This paper presents an optimized design on surface acoustic wave (SAW)-based pressure sensor, which is composed of a broadband reflective delay line and a bond substrate underneath the diaphragm. Using the equivalent circuit model (ECM), the SAW device was simulated, and the effect of inter-digital transducer structure, acoustic aperture and number of finger pairs on the performance of the system was studied. To determine the geometry and configuration of the sensor, Finite Element Method (FEM) was used to calculate the diaphragm bending and stress/strain distribution. From the ECM simulation and FEM analysis, the optimal design parameters were determined, and a new 440 MHz reflective delay line on 41deg YX LiNbO3 was developed, the measured reflection coefficient S11 results in time domain shows a good agreement with simulated one, low loss, sharp reflected peaks and high dynamic separation between the peaks were observed. The SAW device was successfully applied to pressure measurement, and the experiment results approve it is working satisfactorily","PeriodicalId":6362,"journal":{"name":"2006 1st IEEE International Conference on Nano/Micro Engineered and Molecular Systems","volume":"52 1","pages":"1092-1096"},"PeriodicalIF":0.0,"publicationDate":"2006-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87199128","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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