Pub Date : 2024-01-31DOI: 10.1080/07315171.2023.2300596
Hu Zhang, RuiFeng Zhang, Lulu Zhao, Chendong Jin, Ruqian Lian, Peng-Lai Gong, RuiNing Wang, JiangLong Wang, Xing-Qiang Shi
Motivated by the recently discovered superconductivity in Sr-doped nickelate oxides NdNiO2 reduced from NdNiO3 in experiments, we predict a Mott multiferroic BiNiO2 that may be obtained from BiNiO3...
{"title":"From NdNiO2 to a Mott Multiferroic BiNiO2","authors":"Hu Zhang, RuiFeng Zhang, Lulu Zhao, Chendong Jin, Ruqian Lian, Peng-Lai Gong, RuiNing Wang, JiangLong Wang, Xing-Qiang Shi","doi":"10.1080/07315171.2023.2300596","DOIUrl":"https://doi.org/10.1080/07315171.2023.2300596","url":null,"abstract":"Motivated by the recently discovered superconductivity in Sr-doped nickelate oxides NdNiO2 reduced from NdNiO3 in experiments, we predict a Mott multiferroic BiNiO2 that may be obtained from BiNiO3...","PeriodicalId":50451,"journal":{"name":"Ferroelectrics Letters Section","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2024-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139661220","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-01-31DOI: 10.1080/07315171.2023.2300594
A. Kh. Nabiyeva, S. H. Jabarov, N. A. Ismayilova, H. J. Huseynov
In the framework of the density functional theory electronic band structure and density of states of LaxBa1-xMnO3 solid solutions containing different concentrations of La and Ba atoms, were studie...
在密度泛函理论的框架内，研究了含有不同浓度的 La 原子和 Ba 原子的 LaxBa1-xMnO3 固溶体的电子能带结构和状态密度。
{"title":"First Principles Study of Electron Structure of LaxBa1-xMnO3 Crystals","authors":"A. Kh. Nabiyeva, S. H. Jabarov, N. A. Ismayilova, H. J. Huseynov","doi":"10.1080/07315171.2023.2300594","DOIUrl":"https://doi.org/10.1080/07315171.2023.2300594","url":null,"abstract":"In the framework of the density functional theory electronic band structure and density of states of LaxBa1-xMnO3 solid solutions containing different concentrations of La and Ba atoms, were studie...","PeriodicalId":50451,"journal":{"name":"Ferroelectrics Letters Section","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2024-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139661672","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-01-31DOI: 10.1080/07315171.2023.2300593
Hoai Thuong Nguyen, A. Yu Milinsky, S. V. Baryshnikov, Minh Thuyen Chau, Phan Thi Bich Thao
The present study is devoted to analyzing effects of high contents (85 wt.%) of dielectric inclusions, including nanocellulose and silicon dioxide nanoparticles, on ferroelectricity of composites w...
{"title":"Effects of high contents of dielectric inclusions on ferroelectricity in dielectric-ferroelectric nanocomposites with dimethylammonium aluminum sulfate hexahydrate","authors":"Hoai Thuong Nguyen, A. Yu Milinsky, S. V. Baryshnikov, Minh Thuyen Chau, Phan Thi Bich Thao","doi":"10.1080/07315171.2023.2300593","DOIUrl":"https://doi.org/10.1080/07315171.2023.2300593","url":null,"abstract":"The present study is devoted to analyzing effects of high contents (85 wt.%) of dielectric inclusions, including nanocellulose and silicon dioxide nanoparticles, on ferroelectricity of composites w...","PeriodicalId":50451,"journal":{"name":"Ferroelectrics Letters Section","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2024-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139661317","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-01-31DOI: 10.1080/07315171.2023.2300595
Shengyi Liu, Duan Gao, Li Wang, Wenbin Song, Jun Huang, Wenjun Zheng, Qi Zhang, Peijia Xiao
In this paper, a series of Sr0.96Al2Si2O8 phosphors doped with 0.02Eu2+ and 0.02Re3+ (where Re = Tm, Dy, Er, Nd, Sm, La, Ho) were synthesized using the high-temperature solid-phase method at 1350 °...
本文采用高温固相法，在 1350 ° C 下合成了一系列掺杂 0.02Eu2+ 和 0.02Re3+ （其中 Re = Tm、Dy、Er、Nd、Sm、La、Ho）的 Sr0.96Al2Si2O8 荧光粉。
{"title":"Design and Characterization of Eu2+/Ln3+ Co-doped SrAl2Si2O8 Photostimulated Phosphors for Optical Information Storages","authors":"Shengyi Liu, Duan Gao, Li Wang, Wenbin Song, Jun Huang, Wenjun Zheng, Qi Zhang, Peijia Xiao","doi":"10.1080/07315171.2023.2300595","DOIUrl":"https://doi.org/10.1080/07315171.2023.2300595","url":null,"abstract":"In this paper, a series of Sr0.96Al2Si2O8 phosphors doped with 0.02Eu2+ and 0.02Re3+ (where Re = Tm, Dy, Er, Nd, Sm, La, Ho) were synthesized using the high-temperature solid-phase method at 1350 °...","PeriodicalId":50451,"journal":{"name":"Ferroelectrics Letters Section","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2024-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139661539","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-01-31DOI: 10.1080/07315171.2023.2300598
Tapas Pal Majumder, Abhik Halder, Rakesh Kumar Mandal
Theoretically critical unwinding field was studied using Landau free energy model of three different geometrical configuration of antiferroelectric liquid crystals. In this study, we considered the...
{"title":"Influence of Ionic Conductivity in Polymer Dispersed Antiferroelectric Liquid Crystals (PDAFLC): A Comparison of Critical Fields","authors":"Tapas Pal Majumder, Abhik Halder, Rakesh Kumar Mandal","doi":"10.1080/07315171.2023.2300598","DOIUrl":"https://doi.org/10.1080/07315171.2023.2300598","url":null,"abstract":"Theoretically critical unwinding field was studied using Landau free energy model of three different geometrical configuration of antiferroelectric liquid crystals. In this study, we considered the...","PeriodicalId":50451,"journal":{"name":"Ferroelectrics Letters Section","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2024-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139766699","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-01-31DOI: 10.1080/07315171.2023.2300597
S. Hajira, J. Santhosh Vijitha, Sudhakara Rao Hari, K. A. Jamal Basha, V. Adinarayana, B. Sudhakar Reddy
In this work, we have prepared the RE3+(Sm, Dy): MgLa2V2O9 phosphors of different mol% by solid-state reaction approach. The obtained powder phosphors of RE3+(Sm, Dy): MgLa2V2O9 were analyzed by SE...
{"title":"Optical analysis of RE3+ (re = Sm, Dy): MgLa2V2O9 phosphors","authors":"S. Hajira, J. Santhosh Vijitha, Sudhakara Rao Hari, K. A. Jamal Basha, V. Adinarayana, B. Sudhakar Reddy","doi":"10.1080/07315171.2023.2300597","DOIUrl":"https://doi.org/10.1080/07315171.2023.2300597","url":null,"abstract":"In this work, we have prepared the RE3+(Sm, Dy): MgLa2V2O9 phosphors of different mol% by solid-state reaction approach. The obtained powder phosphors of RE3+(Sm, Dy): MgLa2V2O9 were analyzed by SE...","PeriodicalId":50451,"journal":{"name":"Ferroelectrics Letters Section","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2024-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139661459","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-10-05DOI: 10.1080/07315171.2023.2238177
Junlin Yang, Ye Chen, Shihao Xiao, Yijing Niu, Liang Li
AbstractIn order to improve the output torque of an in-plane bending mode traveling wave rotary ultrasonic motor, a double-sided tapered teeth traveling wave rotary ultrasonic motor was proposed. The motor is designed with three types of adaptive rotors that can be used for replacement in different output environments. Simulation analysis was conducted using ANSYS, and prototype production and experimental testing were conducted. The experimental results show that when the excitation voltage is 300 V and the excitation frequency is 22.665 kHz, the maximum output torque that the motor provide is 3.087 N·mm, and the maximum no-load speed is 295 rpm.Keywords: Rotary ultrasonic motortraveling wavedouble-sided drivein-plane bending mode Disclosure StatementNo potential conflict of interest was reported by the author(s).Additional informationFundingThis research was funded by the Natural Science Foundation of Liaoning Provincial Department of Science and Technology (Grant No. 2022-BS-307); the Basic Research Project of Education Department of Liaoning Province (Grant No. JJL202015401) and the Basic Research Project of Education Department of Liaoning Province (Grant No. LJKZ0607).
{"title":"A Double-Sided Tapered Teeth Traveling Wave Ultrasonic Motor Based on In-Plane Bending Mode","authors":"Junlin Yang, Ye Chen, Shihao Xiao, Yijing Niu, Liang Li","doi":"10.1080/07315171.2023.2238177","DOIUrl":"https://doi.org/10.1080/07315171.2023.2238177","url":null,"abstract":"AbstractIn order to improve the output torque of an in-plane bending mode traveling wave rotary ultrasonic motor, a double-sided tapered teeth traveling wave rotary ultrasonic motor was proposed. The motor is designed with three types of adaptive rotors that can be used for replacement in different output environments. Simulation analysis was conducted using ANSYS, and prototype production and experimental testing were conducted. The experimental results show that when the excitation voltage is 300 V and the excitation frequency is 22.665 kHz, the maximum output torque that the motor provide is 3.087 N·mm, and the maximum no-load speed is 295 rpm.Keywords: Rotary ultrasonic motortraveling wavedouble-sided drivein-plane bending mode Disclosure StatementNo potential conflict of interest was reported by the author(s).Additional informationFundingThis research was funded by the Natural Science Foundation of Liaoning Provincial Department of Science and Technology (Grant No. 2022-BS-307); the Basic Research Project of Education Department of Liaoning Province (Grant No. JJL202015401) and the Basic Research Project of Education Department of Liaoning Province (Grant No. LJKZ0607).","PeriodicalId":50451,"journal":{"name":"Ferroelectrics Letters Section","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135482879","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-10-05DOI: 10.1080/07315171.2023.2238175
V. Yu. Topolov
AbstractA 2–1–2 composite with two single-crystal components is studied for the first time to highlight large hydrostatic piezoelectric coefficients dh* and gh*, figure of merit dh*gh*, and electromechanical coupling factor kh*. Each 2–1–2 composite contains layers of domain-engineered [011]-poled relaxor-ferroelectric (1–x)Pb(Zn1/3Nb2/3)O3 – xPbTiO3 single crystal (x = 0.0475–0.09) and heterogeneous layers being systems of aligned piezoelectric Li2B4O7 single crystal rods in polyethylene, and these rods have an elliptic cylindrical shape. New diagrams show the volume-fraction ranges wherein large values of dh*> 10−9 C/N, dh*gh*> 2.10−10 Pa−1 and kh*≈ 0.5–0.6 are observed.Keywords: 2–1–2 composite[011]-poled domain-engineered single crystal1–3 composite layerHydrostatic piezoelectric coefficientsElastic anisotropyPACS: 77.84.-s: Dielectricpiezoelectricferroelectricand antiferroelectric materials AcknowledgmentsThe author would like to thank Prof. Dr C. R. Bowen (University of Bath, UK) and Prof. Dr P. Bisegna (University of Rome Tor Vergata, Italy) for their interest in the field of advanced piezoelectric materials and applications.Disclosure StatementNo potential conflict of interest was reported by the author(s).Additional informationFundingThis research was supported by the Southern Federal University (research topic “Development and Materials-Science Substantiation of the Creation of Materials and Products Based on Piezoelectric Ceramics Using Additive Technologies”, contract No. 176/22-D, July 11th, 2022).
{"title":"Novel Piezo-active 2–1–2 Composites with Sets of Large Hydrostatic Parameters","authors":"V. Yu. Topolov","doi":"10.1080/07315171.2023.2238175","DOIUrl":"https://doi.org/10.1080/07315171.2023.2238175","url":null,"abstract":"AbstractA 2–1–2 composite with two single-crystal components is studied for the first time to highlight large hydrostatic piezoelectric coefficients dh* and gh*, figure of merit dh*gh*, and electromechanical coupling factor kh*. Each 2–1–2 composite contains layers of domain-engineered [011]-poled relaxor-ferroelectric (1–x)Pb(Zn1/3Nb2/3)O3 – xPbTiO3 single crystal (x = 0.0475–0.09) and heterogeneous layers being systems of aligned piezoelectric Li2B4O7 single crystal rods in polyethylene, and these rods have an elliptic cylindrical shape. New diagrams show the volume-fraction ranges wherein large values of dh*> 10−9 C/N, dh*gh*> 2.10−10 Pa−1 and kh*≈ 0.5–0.6 are observed.Keywords: 2–1–2 composite[011]-poled domain-engineered single crystal1–3 composite layerHydrostatic piezoelectric coefficientsElastic anisotropyPACS: 77.84.-s: Dielectricpiezoelectricferroelectricand antiferroelectric materials AcknowledgmentsThe author would like to thank Prof. Dr C. R. Bowen (University of Bath, UK) and Prof. Dr P. Bisegna (University of Rome Tor Vergata, Italy) for their interest in the field of advanced piezoelectric materials and applications.Disclosure StatementNo potential conflict of interest was reported by the author(s).Additional informationFundingThis research was supported by the Southern Federal University (research topic “Development and Materials-Science Substantiation of the Creation of Materials and Products Based on Piezoelectric Ceramics Using Additive Technologies”, contract No. 176/22-D, July 11th, 2022).","PeriodicalId":50451,"journal":{"name":"Ferroelectrics Letters Section","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135482460","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
AbstractThis paper proposes a Dual-Cylinder Piezoelectric Energy Harvester (DC-PEH). The cylinders generate vortex-induced vibration under the action of wind, driving the cantilever beam to deform. During the vibration process, the cantilever beam produces two types of bending modes, namely U-shaped vibration and S-shaped vibration. According to the experimental results, as the wind speed increases, the output power of the DC-PEH first increases and then decreases. When the diameter of the cylinders at both ends of the DC-PEH is 36 mm and the wind speed is 4.3 m/s, the output power can reach 7.812 mW.Keywords: Piezoelectric energy harvestingfluid energyvortex-inducedmultiple vibrations Disclosure StatementNo potential conflict of interest was reported by the author(s).Additional informationFundingThis work was supported by the Shandong Provincial Natural Science Foundation (ZR2022ME053, ZR2021QF092), The Youth Innovation Team Development Program of Shandong Provincial Higher Education Institutions (Grant No. 2022KJ234), National Natural Science Foundation of China (No.51975303) and Shandong Provincial Key Laboratory of Precision Manufacturing and Nontraditional Machining.
{"title":"A Dual-Cylinder Piezoelectric Energy Harvester Using Wind Energy","authors":"Guotai Wang, Lianjian Luo, Qingling Zhao, Chongqiu Yang, Hui Shen, Rujun Song","doi":"10.1080/07315171.2023.2238179","DOIUrl":"https://doi.org/10.1080/07315171.2023.2238179","url":null,"abstract":"AbstractThis paper proposes a Dual-Cylinder Piezoelectric Energy Harvester (DC-PEH). The cylinders generate vortex-induced vibration under the action of wind, driving the cantilever beam to deform. During the vibration process, the cantilever beam produces two types of bending modes, namely U-shaped vibration and S-shaped vibration. According to the experimental results, as the wind speed increases, the output power of the DC-PEH first increases and then decreases. When the diameter of the cylinders at both ends of the DC-PEH is 36 mm and the wind speed is 4.3 m/s, the output power can reach 7.812 mW.Keywords: Piezoelectric energy harvestingfluid energyvortex-inducedmultiple vibrations Disclosure StatementNo potential conflict of interest was reported by the author(s).Additional informationFundingThis work was supported by the Shandong Provincial Natural Science Foundation (ZR2022ME053, ZR2021QF092), The Youth Innovation Team Development Program of Shandong Provincial Higher Education Institutions (Grant No. 2022KJ234), National Natural Science Foundation of China (No.51975303) and Shandong Provincial Key Laboratory of Precision Manufacturing and Nontraditional Machining.","PeriodicalId":50451,"journal":{"name":"Ferroelectrics Letters Section","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135482616","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-10-05DOI: 10.1080/07315171.2023.2238174
W. H. Wang, Li Li, M. Lan, J. H. Du
AbstractIn terms of piezoelectric class (6 mm) crystal semiconductor, the propagation of shear surface waves on the half-space surface under initial stresses is studied. The initial stresses and material parameters are hypothesized to exponentially vary along x− direction only. Besides, the velocity equations of SH waves can be obtained based on the boundary conditions and the kinematic equations of the initially stressed graded piezoelectric semiconductor material, as well as the traction-free boundary conditions. Based on the numerical results, we explore how the semiconductivity, initial stresses as well as material gradient index impact the dispersive curves.Keywords: Shear surface wavesgradient materialpiezoelectric semiconductorsdispersive curvesinitial stresses Disclosure StatementNo potential conflict of interest was reported by the author(s).Additional informationFundingThe present study was funded by the Natural Science Foundation of Heilongjiang Province of China [grant number LH2020A023]; Heilongjiang Province Education Department Scientific Research Project [grant number 145209136]; National Natural Science Foundation of China, [No.42371113].
{"title":"SH Waves in a Half-Space Model of Functionally Gradient Piezoelectric Semiconductors with Initial Stresses","authors":"W. H. Wang, Li Li, M. Lan, J. H. Du","doi":"10.1080/07315171.2023.2238174","DOIUrl":"https://doi.org/10.1080/07315171.2023.2238174","url":null,"abstract":"AbstractIn terms of piezoelectric class (6 mm) crystal semiconductor, the propagation of shear surface waves on the half-space surface under initial stresses is studied. The initial stresses and material parameters are hypothesized to exponentially vary along x− direction only. Besides, the velocity equations of SH waves can be obtained based on the boundary conditions and the kinematic equations of the initially stressed graded piezoelectric semiconductor material, as well as the traction-free boundary conditions. Based on the numerical results, we explore how the semiconductivity, initial stresses as well as material gradient index impact the dispersive curves.Keywords: Shear surface wavesgradient materialpiezoelectric semiconductorsdispersive curvesinitial stresses Disclosure StatementNo potential conflict of interest was reported by the author(s).Additional informationFundingThe present study was funded by the Natural Science Foundation of Heilongjiang Province of China [grant number LH2020A023]; Heilongjiang Province Education Department Scientific Research Project [grant number 145209136]; National Natural Science Foundation of China, [No.42371113].","PeriodicalId":50451,"journal":{"name":"Ferroelectrics Letters Section","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135483080","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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