Pub Date : 2012-07-26DOI: 10.1109/ICOE.2012.6409601
R. Tintu, V. Nampoori, S. Thomas, N. Unnikrishnan
The present paper presents a new way of stacking nano composite films with nano sized thermally evaporated chalcogenide films. Different ways of stacking and the optical properties of single layers and double-layered stacked films are discussed. The optical characterization has been done by analysing the transmittance (T) and reflectance (R) spectra in the spectral region 200-2000 nm. By stacking the thermally evaporated films on composite films, the band gap is found to be between the bandgap of thermally evaporated film and composite film. The refractive index has also increased with respect to the composite film. The change in band gap has lead to the change in optical parameters like dielectric constants, extinction coefficient, nonlinear properties etc. Studies show that the prepared variable wavelength stacked composite based chalcogenide films are found to be a promising candidate for IR filters used in portable miniaturized IR spectrometers, disposable chemical biological sensors etc.
{"title":"Stacked chalcogenide and polymer structures for photonic applications","authors":"R. Tintu, V. Nampoori, S. Thomas, N. Unnikrishnan","doi":"10.1109/ICOE.2012.6409601","DOIUrl":"https://doi.org/10.1109/ICOE.2012.6409601","url":null,"abstract":"The present paper presents a new way of stacking nano composite films with nano sized thermally evaporated chalcogenide films. Different ways of stacking and the optical properties of single layers and double-layered stacked films are discussed. The optical characterization has been done by analysing the transmittance (T) and reflectance (R) spectra in the spectral region 200-2000 nm. By stacking the thermally evaporated films on composite films, the band gap is found to be between the bandgap of thermally evaporated film and composite film. The refractive index has also increased with respect to the composite film. The change in band gap has lead to the change in optical parameters like dielectric constants, extinction coefficient, nonlinear properties etc. Studies show that the prepared variable wavelength stacked composite based chalcogenide films are found to be a promising candidate for IR filters used in portable miniaturized IR spectrometers, disposable chemical biological sensors etc.","PeriodicalId":142915,"journal":{"name":"2012 International Conference on Optical Engineering (ICOE)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125536940","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 : 2012-07-26DOI: 10.1109/ICOE.2012.6409576
V. Vani, C. Geetha, H. Archana
Planar InP/InGaAsP Avalanche Photodiode are important components in the optical communication receiver modules. These devices provide excellent performance for high-speed operations, but their performance is eventually affected by the manufacturing parameter variations considerably. In this paper, an effort has been made to study the effects on theperformance of InP/InGaAsP Avalanche Photodiode due to the variations in the manufacturing parameters. A comparative study of Avalanche Photodiodes with manufacturing parameter variations such as thickness of various layers of photodiode like multiplication layer, absorption layer and carrier layer has been designed, simulated and tested. The results involve verification of device characteristics like breakdown characteristics, gain, spectral response and Quantum efficiency on each of the devices designed. Also, the significance of Anti-reflection coating has been shown in the study.
{"title":"Comparative study of Avalanche Photodiode based on manufacturing parameter variations","authors":"V. Vani, C. Geetha, H. Archana","doi":"10.1109/ICOE.2012.6409576","DOIUrl":"https://doi.org/10.1109/ICOE.2012.6409576","url":null,"abstract":"Planar InP/InGaAsP Avalanche Photodiode are important components in the optical communication receiver modules. These devices provide excellent performance for high-speed operations, but their performance is eventually affected by the manufacturing parameter variations considerably. In this paper, an effort has been made to study the effects on theperformance of InP/InGaAsP Avalanche Photodiode due to the variations in the manufacturing parameters. A comparative study of Avalanche Photodiodes with manufacturing parameter variations such as thickness of various layers of photodiode like multiplication layer, absorption layer and carrier layer has been designed, simulated and tested. The results involve verification of device characteristics like breakdown characteristics, gain, spectral response and Quantum efficiency on each of the devices designed. Also, the significance of Anti-reflection coating has been shown in the study.","PeriodicalId":142915,"journal":{"name":"2012 International Conference on Optical Engineering (ICOE)","volume":"208 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116017556","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 : 2012-07-26DOI: 10.1109/ICOE.2012.6409560
G. Prakash, M. Kulkarni, U. Sripati
Free Space Optical (FSO) communication systems offer a license free and cost effective access performance. FSO systems provide virtually unlimited bandwidth. Since the laser beams used in these systems are spatially confined, the links are very secure. However FSO links perform well only in clear weather conditions. Clouds, fog, aerosols, and turbulence drastically affect the performance of FSO systems and lead to fluctuations in both the intensity and phase of the received signal. FSO links can suffer from data packet corruption and erasure. Various statistical models have been proposed to describe the atmospheric turbulence channels. The choice of the appropriate model for varying level of turbulence is dependent on the atmospheric parameters. In this paper we classify the channels using Radial Basis Function Neural Networks to decide the best fit. We also use Kullback-Leibler distance as a measure between the reference distribution and the distribution of observed data.
{"title":"Using RBF Neural Networks and Kullback-Leibler distance to classify channel models in Free Space Optics","authors":"G. Prakash, M. Kulkarni, U. Sripati","doi":"10.1109/ICOE.2012.6409560","DOIUrl":"https://doi.org/10.1109/ICOE.2012.6409560","url":null,"abstract":"Free Space Optical (FSO) communication systems offer a license free and cost effective access performance. FSO systems provide virtually unlimited bandwidth. Since the laser beams used in these systems are spatially confined, the links are very secure. However FSO links perform well only in clear weather conditions. Clouds, fog, aerosols, and turbulence drastically affect the performance of FSO systems and lead to fluctuations in both the intensity and phase of the received signal. FSO links can suffer from data packet corruption and erasure. Various statistical models have been proposed to describe the atmospheric turbulence channels. The choice of the appropriate model for varying level of turbulence is dependent on the atmospheric parameters. In this paper we classify the channels using Radial Basis Function Neural Networks to decide the best fit. We also use Kullback-Leibler distance as a measure between the reference distribution and the distribution of observed data.","PeriodicalId":142915,"journal":{"name":"2012 International Conference on Optical Engineering (ICOE)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114597231","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 : 2012-07-26DOI: 10.1109/ICOE.2012.6409596
R. Janani, S. Kiran, T. Swapna, T. K. Ramesh, P. Vaya
Existing methodologies in WDM networks, generally uses either lightpath distance or network congestion to identify optimal and backup lightpaths. In our paper, we have designed an efficient alternate RWA protocol (EARP) which considers both congestion and route distance so as to improve the network performance. On arrival of a request the source node sends control signals through all the paths to the destination node. In this process, the number of free continuous wavelengths and conflict information are collected at the destination. Then, the lightpaths are computed based on this information and the precomputed distance information. A subset of wavelengths in the optimal lightpath is considered at the destination node for the reservation on the basis of conflict information. Backup lightpath is used for survivability. The selection of backup lightpath is done in such a way that there is no shared link between the primary and backup lightpath but it can be shared with another backup lightpath. By simulation results, we showed that our proposed protocol has lower blocking probability than the existing.
{"title":"Efficient alternate RWA protocol for WDM networks","authors":"R. Janani, S. Kiran, T. Swapna, T. K. Ramesh, P. Vaya","doi":"10.1109/ICOE.2012.6409596","DOIUrl":"https://doi.org/10.1109/ICOE.2012.6409596","url":null,"abstract":"Existing methodologies in WDM networks, generally uses either lightpath distance or network congestion to identify optimal and backup lightpaths. In our paper, we have designed an efficient alternate RWA protocol (EARP) which considers both congestion and route distance so as to improve the network performance. On arrival of a request the source node sends control signals through all the paths to the destination node. In this process, the number of free continuous wavelengths and conflict information are collected at the destination. Then, the lightpaths are computed based on this information and the precomputed distance information. A subset of wavelengths in the optimal lightpath is considered at the destination node for the reservation on the basis of conflict information. Backup lightpath is used for survivability. The selection of backup lightpath is done in such a way that there is no shared link between the primary and backup lightpath but it can be shared with another backup lightpath. By simulation results, we showed that our proposed protocol has lower blocking probability than the existing.","PeriodicalId":142915,"journal":{"name":"2012 International Conference on Optical Engineering (ICOE)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121498182","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 : 2012-07-26DOI: 10.1109/ICOE.2012.6409570
D. Jyoti, D. Mohan, S. Rani, Ashutosh Kumar Singh
A molecular dynamics simulation based on density functional theory is used to study the mechanism for the regeneration of the cis-di(thiocyanato)-bis(2, 2'-bipyridyl-4-carboxylate 4'carboxylic acid)-ruthenium (II) sensitizing dye (N719) by I in acetonitrile. The regeneration process includes the formation of barrier-free complex of the oxidized dye with both I- and I2-, and the dissociation of I2- and I3- from the reduced dye. In addition to this, simulations of the electrolyte electrode interface are also presented which suggests the role of solvent in lowering the recombination process through redox mediator, thereby favoring swift dye regeneration. The results are validated using FTIR-ATR (Fourier Transform Infra Red- Attenuated Total Reflection) spectra.
{"title":"Investigation of optics behind N719 dye in dye-sensitized solar cells by using molecular dynamics simulation","authors":"D. Jyoti, D. Mohan, S. Rani, Ashutosh Kumar Singh","doi":"10.1109/ICOE.2012.6409570","DOIUrl":"https://doi.org/10.1109/ICOE.2012.6409570","url":null,"abstract":"A molecular dynamics simulation based on density functional theory is used to study the mechanism for the regeneration of the cis-di(thiocyanato)-bis(2, 2'-bipyridyl-4-carboxylate 4'carboxylic acid)-ruthenium (II) sensitizing dye (N719) by I in acetonitrile. The regeneration process includes the formation of barrier-free complex of the oxidized dye with both I- and I2-, and the dissociation of I2- and I3- from the reduced dye. In addition to this, simulations of the electrolyte electrode interface are also presented which suggests the role of solvent in lowering the recombination process through redox mediator, thereby favoring swift dye regeneration. The results are validated using FTIR-ATR (Fourier Transform Infra Red- Attenuated Total Reflection) spectra.","PeriodicalId":142915,"journal":{"name":"2012 International Conference on Optical Engineering (ICOE)","volume":"47 3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126233598","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 : 2012-07-26DOI: 10.1109/ICOE.2012.6409571
A. Prasad, U. Sharath, B. Amith, B. R. Supritha, S. Asokan, G. Hegde
This work aims at providing an effective parking management system by reducing the drivers' searching time for vacant car-parking space, in turn improving the traffic flow in the car park areas. This is achieved by the use of Fiber Bragg Grating Sensor (FBG) sensor instrumentation in vehicle parking management system. Present work involves embedding an array of FBG sensors underground in the parking space, then determining the strain changes on the FBG sensor due to load applied by the vehicle parked in the parking space, occupancy of the parking space is determined. To validate the FBG sensor parking management system, three most common cases have been considered. This closed loop FBG parking management system can give real-time feed-back to space-guidance display board helping the driver in maneuvering the vehicle to the appropriate parking space. The proposed technique offers optimized usage of parking space for the various segments of cars and also facilitates in a conjoined automated billing system, as compared to conventional method of parking systems.
{"title":"Fiber Bragg Grating sensor instrumentation for parking space occupancy management","authors":"A. Prasad, U. Sharath, B. Amith, B. R. Supritha, S. Asokan, G. Hegde","doi":"10.1109/ICOE.2012.6409571","DOIUrl":"https://doi.org/10.1109/ICOE.2012.6409571","url":null,"abstract":"This work aims at providing an effective parking management system by reducing the drivers' searching time for vacant car-parking space, in turn improving the traffic flow in the car park areas. This is achieved by the use of Fiber Bragg Grating Sensor (FBG) sensor instrumentation in vehicle parking management system. Present work involves embedding an array of FBG sensors underground in the parking space, then determining the strain changes on the FBG sensor due to load applied by the vehicle parked in the parking space, occupancy of the parking space is determined. To validate the FBG sensor parking management system, three most common cases have been considered. This closed loop FBG parking management system can give real-time feed-back to space-guidance display board helping the driver in maneuvering the vehicle to the appropriate parking space. The proposed technique offers optimized usage of parking space for the various segments of cars and also facilitates in a conjoined automated billing system, as compared to conventional method of parking systems.","PeriodicalId":142915,"journal":{"name":"2012 International Conference on Optical Engineering (ICOE)","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133684841","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 : 2012-07-26DOI: 10.1109/ICOE.2012.6409566
T. Indumathi, V. Rajappa, S. Vasista, N. Praveen
Reconfigurable Optical Add/Drop Multiplexers (ROADMs) are optical modules capable of adding/dropping or passing through any or all wavelengths present in DWDM signal with remote management capability. In performance of ROADMs, routing power `R' which is a figure of merit has been used. The wavelength routing performance of ROADMs has been improved by inclusion of dynamic traffic under different traffic models like Bernoulli and Pascal models which depends on traffic peakedness “Z”. The proposed model is valid for all existing ROADM architectures involved in practical networks and acts as a useful tool for cost-effective network designs. The routing performance is analyzed under different operating conditions of the system like traffic peakedness (Z), number of switches and wavelengths at different stages of the system.
{"title":"Optimization of optical switches in ROADM with different operating conditions","authors":"T. Indumathi, V. Rajappa, S. Vasista, N. Praveen","doi":"10.1109/ICOE.2012.6409566","DOIUrl":"https://doi.org/10.1109/ICOE.2012.6409566","url":null,"abstract":"Reconfigurable Optical Add/Drop Multiplexers (ROADMs) are optical modules capable of adding/dropping or passing through any or all wavelengths present in DWDM signal with remote management capability. In performance of ROADMs, routing power `R' which is a figure of merit has been used. The wavelength routing performance of ROADMs has been improved by inclusion of dynamic traffic under different traffic models like Bernoulli and Pascal models which depends on traffic peakedness “Z”. The proposed model is valid for all existing ROADM architectures involved in practical networks and acts as a useful tool for cost-effective network designs. The routing performance is analyzed under different operating conditions of the system like traffic peakedness (Z), number of switches and wavelengths at different stages of the system.","PeriodicalId":142915,"journal":{"name":"2012 International Conference on Optical Engineering (ICOE)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126592543","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 : 2012-07-26DOI: 10.1109/ICOE.2012.6409573
V. Bharti, A. Wasan
A theoretical model using density matrix approach has been presented to show the polarization dependence of Electromagnetically Induced Transparency (EIT) in cascade multilevel atomic system. EIT has already been investigated both theoretically and experimentally by using three-level system in lambda (Λ), vee (V), and cascade (Ξ) configurations. However there is asymmetry in absorption measurement. To understand this asymmetry we introduce hyperfine levels in EIT cascade system. We present a five-level atomic system, which is a simple case of 87Rb. This study has been extended to investigate the polarization dependence of probe and control lasers on EIT. It has been observed that there is significant change in transparency window for different laser polarizations.
{"title":"Polarization dependence of Electromagnetic Induced Transparency in multilevel cascade system","authors":"V. Bharti, A. Wasan","doi":"10.1109/ICOE.2012.6409573","DOIUrl":"https://doi.org/10.1109/ICOE.2012.6409573","url":null,"abstract":"A theoretical model using density matrix approach has been presented to show the polarization dependence of Electromagnetically Induced Transparency (EIT) in cascade multilevel atomic system. EIT has already been investigated both theoretically and experimentally by using three-level system in lambda (Λ), vee (V), and cascade (Ξ) configurations. However there is asymmetry in absorption measurement. To understand this asymmetry we introduce hyperfine levels in EIT cascade system. We present a five-level atomic system, which is a simple case of 87Rb. This study has been extended to investigate the polarization dependence of probe and control lasers on EIT. It has been observed that there is significant change in transparency window for different laser polarizations.","PeriodicalId":142915,"journal":{"name":"2012 International Conference on Optical Engineering (ICOE)","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116647364","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 : 2012-07-26DOI: 10.1109/ICOE.2012.6409600
V. Tangod, B. Mastiholi, M. G. Kotresh, P. Ganjihal, P. Raikar, U. Raikar
This paper describes the results of a new fluorescent laser dye ADS740WS is in attachment with silver nanoparticles of size 4-12nm. The main purpose of our research is to know the influence of silver nanoparticles on our chosen ADS740WS fluorescent dye. The attachment of AgNP's with ADS740WS possesses quenching in optical absorption and fluorescence. Photo physical investigations reveal strongly that quenching is due to size, shape and coupling between nanoparticles with adsorbed dye. It is also due to the energy transfer between silver nanoparticles to the dye. Quenching in fluorescence using AgNP's with ADS740WS leads to advancement in printing, painting, lithographic industries and biomolecular labeling.
{"title":"Photo physical studies of silver nanoparticles on ADS740WS fluorescent dye","authors":"V. Tangod, B. Mastiholi, M. G. Kotresh, P. Ganjihal, P. Raikar, U. Raikar","doi":"10.1109/ICOE.2012.6409600","DOIUrl":"https://doi.org/10.1109/ICOE.2012.6409600","url":null,"abstract":"This paper describes the results of a new fluorescent laser dye ADS740WS is in attachment with silver nanoparticles of size 4-12nm. The main purpose of our research is to know the influence of silver nanoparticles on our chosen ADS740WS fluorescent dye. The attachment of AgNP's with ADS740WS possesses quenching in optical absorption and fluorescence. Photo physical investigations reveal strongly that quenching is due to size, shape and coupling between nanoparticles with adsorbed dye. It is also due to the energy transfer between silver nanoparticles to the dye. Quenching in fluorescence using AgNP's with ADS740WS leads to advancement in printing, painting, lithographic industries and biomolecular labeling.","PeriodicalId":142915,"journal":{"name":"2012 International Conference on Optical Engineering (ICOE)","volume":"387 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122074035","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 : 2012-07-26DOI: 10.1109/ICOE.2012.6409574
D. K. Sharma, Anurag Sharma
Based on variational principle, we have earlier developed an analytical model for the modal field of index-guiding microstructured optical fibers (MOFs). Using the model, we study the linear properties of MOF such as spot-sizes; their application in calculating numerical aperture NA and splice loss between an MOF and SMF-28 with transverse offset. Comparisons with available experimental and simulation results have also been included.
{"title":"Spot size of photonic crystal fibers: An analytical method of calculation","authors":"D. K. Sharma, Anurag Sharma","doi":"10.1109/ICOE.2012.6409574","DOIUrl":"https://doi.org/10.1109/ICOE.2012.6409574","url":null,"abstract":"Based on variational principle, we have earlier developed an analytical model for the modal field of index-guiding microstructured optical fibers (MOFs). Using the model, we study the linear properties of MOF such as spot-sizes; their application in calculating numerical aperture NA and splice loss between an MOF and SMF-28 with transverse offset. Comparisons with available experimental and simulation results have also been included.","PeriodicalId":142915,"journal":{"name":"2012 International Conference on Optical Engineering (ICOE)","volume":"173 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113960148","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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