Guilherme S. L. Fabris,Raphael B. de Oliveira,Marcelo L. Pereira Jr.,Robert Vajtai,Pulickel M. Ajayan,Douglas S. Galvão
Hybrid two-dimensional (2D) materials have attracted increasing interest as platforms for tailoring electronic properties through interfacial design. Very recently, a hybrid 2D material termed glaphene, which combines monolayers of 2D silica glass and graphene, was experimentally realized. Inspired by glaphenes, we proposed a class of similar structures named glaphynes, which are formed by stacking SiO2 monolayers onto α-, β-, and γ-graphynes. Graphynes are 2D carbon allotropes with the presence of acetylenic groups (triple bonds). The glaphynes’ structural and electronic properties were investigated using the self-consistent-charge density functional tight-binding (SCC-DFTB) method, as implemented in the DFTB+ package. Our analysis confirms their energetic and structural stability. We have observed that in the case of glaphynes, the electronic proximity effect can indeed open the electronic band gap, but not for all cases, even with the formation of Si–O–C bonds between silica and graphynes.
{"title":"From Glaphene to Glaphynes: A Hybridization of Two-Dimensional Silica Glass and Graphynes","authors":"Guilherme S. L. Fabris,Raphael B. de Oliveira,Marcelo L. Pereira Jr.,Robert Vajtai,Pulickel M. Ajayan,Douglas S. Galvão","doi":"10.1021/acsnano.5c16085","DOIUrl":"https://doi.org/10.1021/acsnano.5c16085","url":null,"abstract":"Hybrid two-dimensional (2D) materials have attracted increasing interest as platforms for tailoring electronic properties through interfacial design. Very recently, a hybrid 2D material termed glaphene, which combines monolayers of 2D silica glass and graphene, was experimentally realized. Inspired by glaphenes, we proposed a class of similar structures named glaphynes, which are formed by stacking SiO2 monolayers onto α-, β-, and γ-graphynes. Graphynes are 2D carbon allotropes with the presence of acetylenic groups (triple bonds). The glaphynes’ structural and electronic properties were investigated using the self-consistent-charge density functional tight-binding (SCC-DFTB) method, as implemented in the DFTB+ package. Our analysis confirms their energetic and structural stability. We have observed that in the case of glaphynes, the electronic proximity effect can indeed open the electronic band gap, but not for all cases, even with the formation of Si–O–C bonds between silica and graphynes.","PeriodicalId":21,"journal":{"name":"ACS Nano","volume":"92 1","pages":""},"PeriodicalIF":17.1,"publicationDate":"2026-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146152436","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Dixon T. Sin,Samuel Au,Benjamin Dopphoopha,Casper H. Y. Chung,Shuhuai Yao
Regulating solar heat gain is crucial for reducing heating, ventilation, and air conditioning (HVAC) energy consumption in buildings and promoting sustainable responses to climate change. Current thermochromic materials suffer from poor durability and limited optical modulation. Here, the study presents a durable thermochromic coating based on an organogel-higher alkane (HA) composite. The reversible phase change of HA within the organogel induces light reflection, scattering, and diffraction, while carbon black particles enhance the absorptance modulation, achieving a maximum change of 0.35. For practical application on cement, where a highly reflective layer is applied beneath, the absorptance modulation can reach 0.25, exceeding reported values for other thermochromic systems that could be applied to the roof or wall. The material withstands prolonged UV exposure and repeated thermal cycling without degradation, making it suitable for real-world applications. Simulations incorporating a reflective underlayer demonstrate potential annual HVAC energy savings of up to 3% across diverse climate zones. This work introduces a robust, scalable, and season-adaptive thermochromic coating for sustainable building energy management.
{"title":"All-Season Thermochromic Organogel Polymers for Passive and Sustainable Building Efficiency","authors":"Dixon T. Sin,Samuel Au,Benjamin Dopphoopha,Casper H. Y. Chung,Shuhuai Yao","doi":"10.1021/acsami.5c22985","DOIUrl":"https://doi.org/10.1021/acsami.5c22985","url":null,"abstract":"Regulating solar heat gain is crucial for reducing heating, ventilation, and air conditioning (HVAC) energy consumption in buildings and promoting sustainable responses to climate change. Current thermochromic materials suffer from poor durability and limited optical modulation. Here, the study presents a durable thermochromic coating based on an organogel-higher alkane (HA) composite. The reversible phase change of HA within the organogel induces light reflection, scattering, and diffraction, while carbon black particles enhance the absorptance modulation, achieving a maximum change of 0.35. For practical application on cement, where a highly reflective layer is applied beneath, the absorptance modulation can reach 0.25, exceeding reported values for other thermochromic systems that could be applied to the roof or wall. The material withstands prolonged UV exposure and repeated thermal cycling without degradation, making it suitable for real-world applications. Simulations incorporating a reflective underlayer demonstrate potential annual HVAC energy savings of up to 3% across diverse climate zones. This work introduces a robust, scalable, and season-adaptive thermochromic coating for sustainable building energy management.","PeriodicalId":5,"journal":{"name":"ACS Applied Materials & Interfaces","volume":"53 1","pages":""},"PeriodicalIF":9.5,"publicationDate":"2026-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146152462","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Peng Chao,Xueqin Zhang,Patiguli Kadierjiang,Yongguo Liu,Aiping Yang,Yong Wang,Xiaoyang Chen,Yining Yang
Doxorubicin (DOX)-induced cardiomyopathy remains therapeutically challenging due to the absence of pathway-specific interventions. Ferroptosis of cardiac microvascular endothelial cells (CMECs) is a major driver of disease progression, yet precise therapeutic strategies remain limited. Here, mechanistic analyses identified lncRNA TUG1 as an upstream promoter of CMEC ferroptosis through the miR-153-5p/MMP2-TIMP2/TFR-1 axis. Guided by this mechanism, a translational construct was developed by cloaking mesoporous silica nanoparticles carrying TUG1-targeting siRNA with neutrophil membranes (NM@si-TUG1/MSN). The neutrophil membrane coating enabled robust cardiac tropism and preferential CMEC uptake. In a murine model of DOX-induced cardiomyopathy, NM@si-TUG1/MSN accumulated in the heart, achieved effective TUG1 knockdown, and markedly reduced ferroptosis. Relative to free siRNA and uncoated nanoparticles, the nanocomplex produced superior outcomes, including restoration of microvascular integrity, reduced fibrosis, and significant improvement in cardiac function. This study characterizes a regulatory axis in DOX-induced cardiomyopathy and demonstrates a targeted biomimetic nanotherapy that interrupts microvascular ferroptosis and limits disease progression. The data support the feasibility of this approach for clinical translation.
{"title":"Biomimetic Nanotherapy Targeting lncRNA TUG1 Alleviates Doxorubicin-Induced Cardiomyopathy by Suppressing Microvascular Ferroptosis","authors":"Peng Chao,Xueqin Zhang,Patiguli Kadierjiang,Yongguo Liu,Aiping Yang,Yong Wang,Xiaoyang Chen,Yining Yang","doi":"10.1021/acsami.5c22847","DOIUrl":"https://doi.org/10.1021/acsami.5c22847","url":null,"abstract":"Doxorubicin (DOX)-induced cardiomyopathy remains therapeutically challenging due to the absence of pathway-specific interventions. Ferroptosis of cardiac microvascular endothelial cells (CMECs) is a major driver of disease progression, yet precise therapeutic strategies remain limited. Here, mechanistic analyses identified lncRNA TUG1 as an upstream promoter of CMEC ferroptosis through the miR-153-5p/MMP2-TIMP2/TFR-1 axis. Guided by this mechanism, a translational construct was developed by cloaking mesoporous silica nanoparticles carrying TUG1-targeting siRNA with neutrophil membranes (NM@si-TUG1/MSN). The neutrophil membrane coating enabled robust cardiac tropism and preferential CMEC uptake. In a murine model of DOX-induced cardiomyopathy, NM@si-TUG1/MSN accumulated in the heart, achieved effective TUG1 knockdown, and markedly reduced ferroptosis. Relative to free siRNA and uncoated nanoparticles, the nanocomplex produced superior outcomes, including restoration of microvascular integrity, reduced fibrosis, and significant improvement in cardiac function. This study characterizes a regulatory axis in DOX-induced cardiomyopathy and demonstrates a targeted biomimetic nanotherapy that interrupts microvascular ferroptosis and limits disease progression. The data support the feasibility of this approach for clinical translation.","PeriodicalId":5,"journal":{"name":"ACS Applied Materials & Interfaces","volume":"137 1","pages":""},"PeriodicalIF":9.5,"publicationDate":"2026-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146152466","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-02-11DOI: 10.1016/j.apsusc.2026.166294
Gijin Kim, Purun-hanul Kim, Suk Gyu Hahm, Myongjong Kwon, Byungha Park, Changho Hong, Seungwu Han
{"title":"A computational study for screening high-selectivity inhibitors in area-selective atomic layer deposition on amorphous surfaces","authors":"Gijin Kim, Purun-hanul Kim, Suk Gyu Hahm, Myongjong Kwon, Byungha Park, Changho Hong, Seungwu Han","doi":"10.1016/j.apsusc.2026.166294","DOIUrl":"https://doi.org/10.1016/j.apsusc.2026.166294","url":null,"abstract":"","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"16 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2026-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146152801","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-02-11DOI: 10.1016/j.jallcom.2026.186790
Raad Omar, Jordan Noronha, Shenglu Lu, Abduladheem Almalki, Tiantain Wang, Elmira Sharabian, Mahyar Khorasani, Milan Brandt, Ma Qian
{"title":"Ultra-Thin-Walled Ti-6242 via Laser-based Powder Bed Fusion: Manufacturability Framework and Defect Suppression","authors":"Raad Omar, Jordan Noronha, Shenglu Lu, Abduladheem Almalki, Tiantain Wang, Elmira Sharabian, Mahyar Khorasani, Milan Brandt, Ma Qian","doi":"10.1016/j.jallcom.2026.186790","DOIUrl":"https://doi.org/10.1016/j.jallcom.2026.186790","url":null,"abstract":"","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"86 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2026-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146153314","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Despite metal halide perovskite nanocrystals (NCs) having shown great promise for light-emitting applications, their performance is often limited by surface defects and unstable ligand environments that promote nonradiative recombination. To overcome these challenges, the influence of countercations in tetrafluoroborate (BF4–) salts on the surface passivation and photophysical properties of CsPbBr3 NCs was systematically investigated. A series of BF4– salts with inorganic-, aromatic-, and phosphorus-based cations were examined to correlate countercation chemistry with surface reactivity. Structural analyses revealed that most BF4– salts efficiently removed metallic Pb0 defects while maintaining the phase integrity. NH4BF4 promoted the oriented attachment of nanocubes into nanowires, whereas tritylium BF4 induced the partial decomposition of BF4– into BF3 and F–, forming Pb–F bonds that stabilized the surface and reduced trap densities. In contrast, 2,4,6-triphenylpyrylium BF4 triggered a Katritzky reaction with oleylamine, leading to aggregation and Cs4PbBr6 formation. Photophysical measurements showed enhanced photoluminescence and increased trap activation energies for most BF4–-treated NCs due to suppressed nonradiative recombination. Light-emitting diodes incorporating sodium and tritylium BF4-treated NCs exhibited improved emission stability and electroluminescence. These findings highlight countercation-dependent surface chemistry as a key factor in achieving efficient defect passivation and stable perovskite optoelectronic performance.
{"title":"Modulating the Photoluminescence of CsPbBr3 Nanocrystals via Cation Variation in BF4– Salts","authors":"Min-Gi Jeon,Artavazd Kirakosyan,Subin Yun,Chang-Yeon Kim,Dung Khac Nguyen,Seonu Lee,Huong Thi Cam Le,Sunhyun Nam,Jihoon Choi","doi":"10.1021/acs.chemmater.5c03031","DOIUrl":"https://doi.org/10.1021/acs.chemmater.5c03031","url":null,"abstract":"Despite metal halide perovskite nanocrystals (NCs) having shown great promise for light-emitting applications, their performance is often limited by surface defects and unstable ligand environments that promote nonradiative recombination. To overcome these challenges, the influence of countercations in tetrafluoroborate (BF4–) salts on the surface passivation and photophysical properties of CsPbBr3 NCs was systematically investigated. A series of BF4– salts with inorganic-, aromatic-, and phosphorus-based cations were examined to correlate countercation chemistry with surface reactivity. Structural analyses revealed that most BF4– salts efficiently removed metallic Pb0 defects while maintaining the phase integrity. NH4BF4 promoted the oriented attachment of nanocubes into nanowires, whereas tritylium BF4 induced the partial decomposition of BF4– into BF3 and F–, forming Pb–F bonds that stabilized the surface and reduced trap densities. In contrast, 2,4,6-triphenylpyrylium BF4 triggered a Katritzky reaction with oleylamine, leading to aggregation and Cs4PbBr6 formation. Photophysical measurements showed enhanced photoluminescence and increased trap activation energies for most BF4–-treated NCs due to suppressed nonradiative recombination. Light-emitting diodes incorporating sodium and tritylium BF4-treated NCs exhibited improved emission stability and electroluminescence. These findings highlight countercation-dependent surface chemistry as a key factor in achieving efficient defect passivation and stable perovskite optoelectronic performance.","PeriodicalId":33,"journal":{"name":"Chemistry of Materials","volume":"39 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2026-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146152427","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Spinal cord injury (SCI) repair has been a great challenge worldwide because of its complex regeneration mechanisms and limited self-healing. The biomimetic construction of a bioactive scaffold represents a promising direction for SCI repair. Inspired by the efficient self-healing properties of the neonatal spinal cord, this study developed a neonatal spinal-cord-like scaffold (NSLS) aimed at regulating SCI repair at different stages. The NSLS features a neonatal spinal cord matrix, multilevel biomimetic structures, and matching mechanical strength via personalized laser processing and dual-network cross-linking. The microenvironments of the NSLS activate energy metabolism, synaptic formation, and the gliogenesis of neural stem cells (NSCs). Notably, the NSLS could achieve rapid hemostasis and integration with the host spinal cord, facilitating nutrient infiltration and establishing a stable connection in the early stage. Furthermore, NSCs loaded with NSLS (NSLT) promoted nerve repair by promoting microglial M2 polarization to decrease local inflammatory responses in the intermediate stage. Finally, axons grow directionally within the channels and form new connections to enhance neural repair and functional recovery in the late stage. Therefore, NSLT could significantly enhance nerve regeneration and functional recovery after SCI via stage-specific regulation.
{"title":"Neonatal Spinal-Cord-Like Scaffold with Hierarchical Structural and Neurogenetic Microenvironments for Spinal Cord Injury Repair","authors":"Baoshuai Bai,Jianhao Wang,Linlin Jiang,Chenbo Zou,Shuo Liu,Zhangyang Qi,Chi Zhang,Zhen Li,Ruizhi Zhang,Yanhan Liu,Gang Lu,Xingqi Song,Chunlin Li,Hua Zhao,Ning Ran,Guangdong Zhou,Xiaohong Kong,Partick Shu Hang Yung,Dong Lei,Shiqing Feng,Hengxing Zhou","doi":"10.1021/acsnano.5c07071","DOIUrl":"https://doi.org/10.1021/acsnano.5c07071","url":null,"abstract":"Spinal cord injury (SCI) repair has been a great challenge worldwide because of its complex regeneration mechanisms and limited self-healing. The biomimetic construction of a bioactive scaffold represents a promising direction for SCI repair. Inspired by the efficient self-healing properties of the neonatal spinal cord, this study developed a neonatal spinal-cord-like scaffold (NSLS) aimed at regulating SCI repair at different stages. The NSLS features a neonatal spinal cord matrix, multilevel biomimetic structures, and matching mechanical strength via personalized laser processing and dual-network cross-linking. The microenvironments of the NSLS activate energy metabolism, synaptic formation, and the gliogenesis of neural stem cells (NSCs). Notably, the NSLS could achieve rapid hemostasis and integration with the host spinal cord, facilitating nutrient infiltration and establishing a stable connection in the early stage. Furthermore, NSCs loaded with NSLS (NSLT) promoted nerve repair by promoting microglial M2 polarization to decrease local inflammatory responses in the intermediate stage. Finally, axons grow directionally within the channels and form new connections to enhance neural repair and functional recovery in the late stage. Therefore, NSLT could significantly enhance nerve regeneration and functional recovery after SCI via stage-specific regulation.","PeriodicalId":21,"journal":{"name":"ACS Nano","volume":"156 1","pages":""},"PeriodicalIF":17.1,"publicationDate":"2026-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146152433","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Juyoung Kim,Ruzan Sokhoyan,Minkyoon Yi,Sangjun Han,Harry A. Atwater,Min Seok Jang
Active photonic systems comprising arrays of active metasurfaces─arrays of tunable resonators─offer dynamic wavefront control at subwavelength scales. Transmissive metasurfaces are an essential requirement in cascaded arrays of metasurfaces and enable integration with chip-scale light sources and detectors. However, most existing active phase control metasurface designs are reflective due to fundamental limitations in single-resonance transmissive architectures, which typically exhibit a transmission null at resonance and restrict transmitted phase shifts to 0–180°. We report an approach to overcome these constraints by introducing additional diffraction ports in reflection while maintaining a single transmission port. This configuration enables continuous 0–360° phase tuning in transmission using a single resonance while avoiding the transmission zero. Moreover, we analytically demonstrate using temporal coupled-mode theory that this approach supports a spectrally flat transmission amplitude across the entire phase range─an effect previously observed only in multiresonant (Kerker-type) systems. Unlike those, our design allows dynamic phase control with a single resonance and a constant transmission. To validate our theory, we present proof-of-concept active metasurfaces using lithium niobate as the tunable material. Two designs are explored via full-wave simulations: one using high-Q germanium Mie resonators at 3 μm, achieving ∼250° tunable phase shift with constant transmission amplitude ∼0.45; and another using silicon resonators at telecom wavelengths, demonstrating ∼300° phase shift with amplitude ∼0.4. Both approach the theoretical transmission bound of 0.5. Our approach enables compact, dynamically tunable transmissive metasurfaces with near-ideal phase and amplitude characteristics, paving the way for integrated, reconfigurable metasurfaces.
{"title":"Overcoming Barriers to Dynamic Phase-Only Modulation in Transmissive Metasurfaces via Diffraction Control","authors":"Juyoung Kim,Ruzan Sokhoyan,Minkyoon Yi,Sangjun Han,Harry A. Atwater,Min Seok Jang","doi":"10.1021/acsnano.5c13223","DOIUrl":"https://doi.org/10.1021/acsnano.5c13223","url":null,"abstract":"Active photonic systems comprising arrays of active metasurfaces─arrays of tunable resonators─offer dynamic wavefront control at subwavelength scales. Transmissive metasurfaces are an essential requirement in cascaded arrays of metasurfaces and enable integration with chip-scale light sources and detectors. However, most existing active phase control metasurface designs are reflective due to fundamental limitations in single-resonance transmissive architectures, which typically exhibit a transmission null at resonance and restrict transmitted phase shifts to 0–180°. We report an approach to overcome these constraints by introducing additional diffraction ports in reflection while maintaining a single transmission port. This configuration enables continuous 0–360° phase tuning in transmission using a single resonance while avoiding the transmission zero. Moreover, we analytically demonstrate using temporal coupled-mode theory that this approach supports a spectrally flat transmission amplitude across the entire phase range─an effect previously observed only in multiresonant (Kerker-type) systems. Unlike those, our design allows dynamic phase control with a single resonance and a constant transmission. To validate our theory, we present proof-of-concept active metasurfaces using lithium niobate as the tunable material. Two designs are explored via full-wave simulations: one using high-Q germanium Mie resonators at 3 μm, achieving ∼250° tunable phase shift with constant transmission amplitude ∼0.45; and another using silicon resonators at telecom wavelengths, demonstrating ∼300° phase shift with amplitude ∼0.4. Both approach the theoretical transmission bound of 0.5. Our approach enables compact, dynamically tunable transmissive metasurfaces with near-ideal phase and amplitude characteristics, paving the way for integrated, reconfigurable metasurfaces.","PeriodicalId":21,"journal":{"name":"ACS Nano","volume":"18 1","pages":""},"PeriodicalIF":17.1,"publicationDate":"2026-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146152434","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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