Pub Date : 2021-09-05DOI: 10.1109/NAP51885.2021.9568531
O. Cardozo, Sajid Farooq, R. D. de Araujo
In this work, we investigate the use of zinc oxide (ZnO) semiconductor nanospheres on the top surface of a 200 nm thick P3HT:PCBM film to improve the optical efficiency of organic solar cells. 3D full-wave computational modeling was explored to investigate the interaction of light with the semiconductor nanospheres and P3HT:PCBM film. The obtained results demonstrate that 160 nm diameter ZnO nanospheres scatter light predominately into the active layer, enhancing the light absorption of the organic material. The results were obtained by covering 25% of the organic solar cell active layer surface with ZnO nanospheres. At 550nm the absorption enhancement value reachs 12%. At 650 nm the absorption enhancement reachs up to 35x. The findings indicate that ZnO nanospheres can improve the performance of organic solar cells.
{"title":"Perspectives of Exploring ZnO Nanoparticles on the Active Layer Surface of Organic Solar Cells","authors":"O. Cardozo, Sajid Farooq, R. D. de Araujo","doi":"10.1109/NAP51885.2021.9568531","DOIUrl":"https://doi.org/10.1109/NAP51885.2021.9568531","url":null,"abstract":"In this work, we investigate the use of zinc oxide (ZnO) semiconductor nanospheres on the top surface of a 200 nm thick P3HT:PCBM film to improve the optical efficiency of organic solar cells. 3D full-wave computational modeling was explored to investigate the interaction of light with the semiconductor nanospheres and P3HT:PCBM film. The obtained results demonstrate that 160 nm diameter ZnO nanospheres scatter light predominately into the active layer, enhancing the light absorption of the organic material. The results were obtained by covering 25% of the organic solar cell active layer surface with ZnO nanospheres. At 550nm the absorption enhancement value reachs 12%. At 650 nm the absorption enhancement reachs up to 35x. The findings indicate that ZnO nanospheres can improve the performance of organic solar cells.","PeriodicalId":6735,"journal":{"name":"2021 IEEE 11th International Conference Nanomaterials: Applications & Properties (NAP)","volume":"26 1","pages":"1-3"},"PeriodicalIF":0.0,"publicationDate":"2021-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85931618","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 : 2021-09-05DOI: 10.1109/NAP51885.2021.9568615
E. Lysenkov, S. Bilyi, V. Klepko, L. Klymenko
The structure features and intercalation processes in oligoethylene glycol (OEG)-based systems and organoclay were studied using X-ray diffraction analysis. It is established that after the introduction of surfactants, the interlayer distance in montmorillonite (MMT) increased. This indicates the intercalation process of surfactant molecules into the interlayer space of the MMT. After introduction to polymer matrix the increase in the interlayer distance is observed. This indicates the intercalation of two monolayers of OEG and the formation of quasibilayer structures. It is shown that the structure of OEG-based systems significantly depends on the content of the nanofiller. Partial processes of intercalation are observed in OEG-organoclay nanocomposites.
{"title":"Features of Intercalation Processes in Polymer Nanocomposites Based on Oligoethylene Glycol and Organoclay","authors":"E. Lysenkov, S. Bilyi, V. Klepko, L. Klymenko","doi":"10.1109/NAP51885.2021.9568615","DOIUrl":"https://doi.org/10.1109/NAP51885.2021.9568615","url":null,"abstract":"The structure features and intercalation processes in oligoethylene glycol (OEG)-based systems and organoclay were studied using X-ray diffraction analysis. It is established that after the introduction of surfactants, the interlayer distance in montmorillonite (MMT) increased. This indicates the intercalation process of surfactant molecules into the interlayer space of the MMT. After introduction to polymer matrix the increase in the interlayer distance is observed. This indicates the intercalation of two monolayers of OEG and the formation of quasibilayer structures. It is shown that the structure of OEG-based systems significantly depends on the content of the nanofiller. Partial processes of intercalation are observed in OEG-organoclay nanocomposites.","PeriodicalId":6735,"journal":{"name":"2021 IEEE 11th International Conference Nanomaterials: Applications & Properties (NAP)","volume":"64 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2021-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90564714","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 : 2021-09-05DOI: 10.1109/NAP51885.2021.9568535
A. Zykov, N. Yefymenko, V. Korneenkov, S. Dudin, S. Yakovin
The paper presents characteristics of combined Magnetron-Ion-Source Sputtering System (MISSS) with impact on the joint operation of magnetron discharge the ion source giving detailed dependencies of the system parameters on gas pressure, magnetic field strength and topology, and input power. Spatial distribution of particle fluxes and ion energy spectra in different operating modes of the system are presented as well.
{"title":"The Energy and Ion Flux Control in MISSS for Nanostructure Coating Synthesis","authors":"A. Zykov, N. Yefymenko, V. Korneenkov, S. Dudin, S. Yakovin","doi":"10.1109/NAP51885.2021.9568535","DOIUrl":"https://doi.org/10.1109/NAP51885.2021.9568535","url":null,"abstract":"The paper presents characteristics of combined Magnetron-Ion-Source Sputtering System (MISSS) with impact on the joint operation of magnetron discharge the ion source giving detailed dependencies of the system parameters on gas pressure, magnetic field strength and topology, and input power. Spatial distribution of particle fluxes and ion energy spectra in different operating modes of the system are presented as well.","PeriodicalId":6735,"journal":{"name":"2021 IEEE 11th International Conference Nanomaterials: Applications & Properties (NAP)","volume":"1 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2021-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89806717","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 : 2021-09-05DOI: 10.1109/NAP51885.2021.9568564
Guri Isaiah Borbeyiyong, Y. Prysiazhnyi, S. Pyshyev, Yu.V. Lypko
some aspects of the process of obtaining coumarone-indene-carbazole resin as a modifier of road bitumens have been studied. In particular, the influence of the conditions of separation of unreacted raw materials from the polymer on the thermoplastic and adhesive properties of the resin and modified bitumen
{"title":"Some Aspects of the Process of Obtaining Coumarone-Indene-Carbazole Modifier for Wear-Resistant Bituminous Road Materials","authors":"Guri Isaiah Borbeyiyong, Y. Prysiazhnyi, S. Pyshyev, Yu.V. Lypko","doi":"10.1109/NAP51885.2021.9568564","DOIUrl":"https://doi.org/10.1109/NAP51885.2021.9568564","url":null,"abstract":"some aspects of the process of obtaining coumarone-indene-carbazole resin as a modifier of road bitumens have been studied. In particular, the influence of the conditions of separation of unreacted raw materials from the polymer on the thermoplastic and adhesive properties of the resin and modified bitumen","PeriodicalId":6735,"journal":{"name":"2021 IEEE 11th International Conference Nanomaterials: Applications & Properties (NAP)","volume":"21 11","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2021-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91405400","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 : 2021-09-05DOI: 10.1109/NAP51885.2021.9568572
E. Zhitlukhina, V. Tarenkov, V. Dmitrenko, M. Belogolovskii
In this contribution, we summarize current progress in identifying the origin of above-gap ‘anomalous’ features regularly observed in point-contact spectra of superconducting materials. It is shown that their origin can be associated with a nanoscale degraded coating whose contact with the superconducting bulk is imperfect. To verify this hypothesis, we have performed control measurements of differential conductance – versus – voltage bias dependences for point contacts based on Pb, thoroughly studied superconductor with a single energy gap, and a novel two-band superconducting MgB2 compound. Calculated characteristics well describe experimental findings for these two fundamentally different materials.
{"title":"Nanoscale Origin of Conductance Dips in Point-Contact Spectra of Superconductors","authors":"E. Zhitlukhina, V. Tarenkov, V. Dmitrenko, M. Belogolovskii","doi":"10.1109/NAP51885.2021.9568572","DOIUrl":"https://doi.org/10.1109/NAP51885.2021.9568572","url":null,"abstract":"In this contribution, we summarize current progress in identifying the origin of above-gap ‘anomalous’ features regularly observed in point-contact spectra of superconducting materials. It is shown that their origin can be associated with a nanoscale degraded coating whose contact with the superconducting bulk is imperfect. To verify this hypothesis, we have performed control measurements of differential conductance – versus – voltage bias dependences for point contacts based on Pb, thoroughly studied superconductor with a single energy gap, and a novel two-band superconducting MgB2 compound. Calculated characteristics well describe experimental findings for these two fundamentally different materials.","PeriodicalId":6735,"journal":{"name":"2021 IEEE 11th International Conference Nanomaterials: Applications & Properties (NAP)","volume":"111 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2021-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79628753","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 : 2021-09-05DOI: 10.1109/NAP51885.2021.9568626
T. Obukhova, M. Dusheiko, A. Shams, D. Volynskyi, Dmytro Mazulenko, Bohdan Soloshchuk, Davidenko Stanislav
Melanin-silicon structures are promising organic-inorganic materials that combine the benefits of biopolymer and conventional semiconductors. In diode-like mode, the rectification factor is up to 500 and depends on melanin deposition time. Melanin-silicon structures could be used for glucose and volatile organic compounds vapors detection with sensitivity up to 18 mA/% and 0.23 A∙g/cm-3 respectively.
{"title":"Melanin-based Organic-inorganic Structures for Sensor Application","authors":"T. Obukhova, M. Dusheiko, A. Shams, D. Volynskyi, Dmytro Mazulenko, Bohdan Soloshchuk, Davidenko Stanislav","doi":"10.1109/NAP51885.2021.9568626","DOIUrl":"https://doi.org/10.1109/NAP51885.2021.9568626","url":null,"abstract":"Melanin-silicon structures are promising organic-inorganic materials that combine the benefits of biopolymer and conventional semiconductors. In diode-like mode, the rectification factor is up to 500 and depends on melanin deposition time. Melanin-silicon structures could be used for glucose and volatile organic compounds vapors detection with sensitivity up to 18 mA/% and 0.23 A∙g/cm-3 respectively.","PeriodicalId":6735,"journal":{"name":"2021 IEEE 11th International Conference Nanomaterials: Applications & Properties (NAP)","volume":"11 1","pages":"1-3"},"PeriodicalIF":0.0,"publicationDate":"2021-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81446961","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 : 2021-09-05DOI: 10.1109/NAP51885.2021.9568613
S. Nakonechnyi, A. Yurkova
In this study the high-entropy alloy (HEA) coatings was sprayed by cold spraying (CS) method on steel substrate from AlNiCoFeCrTi HEA powder fabricated by short-time mechanical alloying (MA) and annealing. It was determined that in the MA of powder mixture forming metastable nanostructured bcc solid solution which changes to ordered bcc solid solution (B2 phase) after annealing and vice versa after additional grinding. Also after annealing AlNiCoFeCrTi HEA powder contains intermetallic σ-phase and TiC particles which retain in powder after its grinding. So, before deposition the feedstock powder consists of disordered bcc solid solution, an intermetallic σ-phase, and TiC carbide. Mean thickness of deposited coatings is about 450 μm. Due to low temperature of CS process, AlFeNiCoCrTi coating has same phase composition and nanostructural state as a feedstock powder. The Vickers hardness of AlFeNiCoCrTi HEA coating is 10.3±0.3 GPa. Coating has very low porosity (<1%) and good adhesion to the steel substrate. High strength characteristics of the coating are provided by the high characteristics of feedstock powder and its strengthening mechanisms, as well as impact hardening during spraying at a supersonic speed at low temperature.
{"title":"Nanostructural AlNiCoFeCrTi High-Entropy Coatings Performed by Cold Spraying","authors":"S. Nakonechnyi, A. Yurkova","doi":"10.1109/NAP51885.2021.9568613","DOIUrl":"https://doi.org/10.1109/NAP51885.2021.9568613","url":null,"abstract":"In this study the high-entropy alloy (HEA) coatings was sprayed by cold spraying (CS) method on steel substrate from AlNiCoFeCrTi HEA powder fabricated by short-time mechanical alloying (MA) and annealing. It was determined that in the MA of powder mixture forming metastable nanostructured bcc solid solution which changes to ordered bcc solid solution (B2 phase) after annealing and vice versa after additional grinding. Also after annealing AlNiCoFeCrTi HEA powder contains intermetallic σ-phase and TiC particles which retain in powder after its grinding. So, before deposition the feedstock powder consists of disordered bcc solid solution, an intermetallic σ-phase, and TiC carbide. Mean thickness of deposited coatings is about 450 μm. Due to low temperature of CS process, AlFeNiCoCrTi coating has same phase composition and nanostructural state as a feedstock powder. The Vickers hardness of AlFeNiCoCrTi HEA coating is 10.3±0.3 GPa. Coating has very low porosity (<1%) and good adhesion to the steel substrate. High strength characteristics of the coating are provided by the high characteristics of feedstock powder and its strengthening mechanisms, as well as impact hardening during spraying at a supersonic speed at low temperature.","PeriodicalId":6735,"journal":{"name":"2021 IEEE 11th International Conference Nanomaterials: Applications & Properties (NAP)","volume":"1 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2021-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89567986","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 : 2021-09-05DOI: 10.1109/NAP51885.2021.9568393
A. Kucherenko, Olena Nikitchuk, N. Baran, Ľ. Dulebová, M. Kuznetsova, V. Moravskyi
On the example of metal-filled polyvinyl chloride composites obtained by processing metallized polymer granules, the need to develop an additional indicator that will better characterize the properties of polymer composites is shown. The proposed hand takes into account the change in the size of the polymer granules used for metallization and characterizes the metallized raw material by the number of granules required to obtain a material with a metal content of 1%. The use of such an indicator allows explaining the different behavior of metal-filled composites with the same metal content in them. The developed indicator is informative and easy to use and define.
{"title":"Characteristics of Metallized Polymeric Raw Materials","authors":"A. Kucherenko, Olena Nikitchuk, N. Baran, Ľ. Dulebová, M. Kuznetsova, V. Moravskyi","doi":"10.1109/NAP51885.2021.9568393","DOIUrl":"https://doi.org/10.1109/NAP51885.2021.9568393","url":null,"abstract":"On the example of metal-filled polyvinyl chloride composites obtained by processing metallized polymer granules, the need to develop an additional indicator that will better characterize the properties of polymer composites is shown. The proposed hand takes into account the change in the size of the polymer granules used for metallization and characterizes the metallized raw material by the number of granules required to obtain a material with a metal content of 1%. The use of such an indicator allows explaining the different behavior of metal-filled composites with the same metal content in them. The developed indicator is informative and easy to use and define.","PeriodicalId":6735,"journal":{"name":"2021 IEEE 11th International Conference Nanomaterials: Applications & Properties (NAP)","volume":"41 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2021-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88901939","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 : 2021-09-05DOI: 10.1109/NAP51885.2021.9568575
I. Shender, V. Studenyak, A. Pogodin, Michael Filep, T. Malakhovska, O. Kokhan, I. Studenyak
Ceramic samples on the basis of nanocrystalline powders $mathrm{c}_{mathrm{u}1-mathrm{x}} A mathrm{g}_{mathrm{x}})_{7}$GeSe5I(x=0,0.25,0.5,0.75,1) were made by cold pressing technique at a pressure of $sim$0.4 GPa with further annealing during 36 hours at 873 K. The size of ceramic materials crystallites is determined by the method of microstructural analysis. Investigation of electrical properties of ceramics based on (Cu1-xA$mathrm{g}_{mathrm{x}})_{7}$GeSe5I mixed crystals were carried out by the method of impedance spectroscopy in the temperature range 293-383K and in the frequency range from 10 Hz to 300 kHz. Analysis of Nyquist plots allowed to determine the ionic and electronic components of electrical conductivity, the temperature dependence of which in Arrhenius coordinates has a linear character, which indicates their thermoactivation mechanism. Compositional behaviour of both components of electrical conductivity (ionic and electronic) and their activation energies were estimated. Their nonlinear character is explained by both the complex process of recrystallization and Cu+$leftrightarrow$ Ag+ cationic substitution.
{"title":"Influence of Cu+↔Ag+ Cationic Substitution on Electrical Properties of Ceramics Based on (Cu1-x Agx)7GeSe5I Nanopowders","authors":"I. Shender, V. Studenyak, A. Pogodin, Michael Filep, T. Malakhovska, O. Kokhan, I. Studenyak","doi":"10.1109/NAP51885.2021.9568575","DOIUrl":"https://doi.org/10.1109/NAP51885.2021.9568575","url":null,"abstract":"Ceramic samples on the basis of nanocrystalline powders $mathrm{c}_{mathrm{u}1-mathrm{x}} A mathrm{g}_{mathrm{x}})_{7}$GeSe5I(x=0,0.25,0.5,0.75,1) were made by cold pressing technique at a pressure of $sim$0.4 GPa with further annealing during 36 hours at 873 K. The size of ceramic materials crystallites is determined by the method of microstructural analysis. Investigation of electrical properties of ceramics based on (Cu1-xA$mathrm{g}_{mathrm{x}})_{7}$GeSe5I mixed crystals were carried out by the method of impedance spectroscopy in the temperature range 293-383K and in the frequency range from 10 Hz to 300 kHz. Analysis of Nyquist plots allowed to determine the ionic and electronic components of electrical conductivity, the temperature dependence of which in Arrhenius coordinates has a linear character, which indicates their thermoactivation mechanism. Compositional behaviour of both components of electrical conductivity (ionic and electronic) and their activation energies were estimated. Their nonlinear character is explained by both the complex process of recrystallization and Cu+$leftrightarrow$ Ag+ cationic substitution.","PeriodicalId":6735,"journal":{"name":"2021 IEEE 11th International Conference Nanomaterials: Applications & Properties (NAP)","volume":"128 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2021-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78904915","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 : 2021-09-05DOI: 10.1109/NAP51885.2021.9568623
S. Najim, A. M. Muhammed, A. Pogrebnjak
CdSe thin films were deposited on the glass substrate by chemical bath deposition and annealed at various temperatures (373, 573, 773, and 873 K). Scanning electron microscopy (SEM) was used to study the surface of hexagonal structure and the grains with different sizes increasing with annealing temperature. X-ray diffraction (XRD) spectra with a distinguish peak (002) for CdSe films with a hexagonal structure and annealed films were polycrystalline. The crystallinity was improved at 873 K. The bandgap for CdSe films was 2.2 eV, which decreased with increasing annealing temperature.
{"title":"Study of Thermal Annealing on Morphology, Structure and Optical Properties Of CdSe Thin Films at Different Annealing Temperatures","authors":"S. Najim, A. M. Muhammed, A. Pogrebnjak","doi":"10.1109/NAP51885.2021.9568623","DOIUrl":"https://doi.org/10.1109/NAP51885.2021.9568623","url":null,"abstract":"CdSe thin films were deposited on the glass substrate by chemical bath deposition and annealed at various temperatures (373, 573, 773, and 873 K). Scanning electron microscopy (SEM) was used to study the surface of hexagonal structure and the grains with different sizes increasing with annealing temperature. X-ray diffraction (XRD) spectra with a distinguish peak (002) for CdSe films with a hexagonal structure and annealed films were polycrystalline. The crystallinity was improved at 873 K. The bandgap for CdSe films was 2.2 eV, which decreased with increasing annealing temperature.","PeriodicalId":6735,"journal":{"name":"2021 IEEE 11th International Conference Nanomaterials: Applications & Properties (NAP)","volume":"34 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2021-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75646664","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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