Advanced Materials & Technologies最新文献

Highly Sensitive Wearable Pressure Sensor Over a Wide Sensing Range Enabled by the Skin Surface‐Like 3D Patterned Interwoven Structure 高灵敏度可穿戴压力传感器，具有宽传感范围，由类似皮肤表面的3D图案交织结构实现

Advanced Materials & Technologies Pub Date : 2022-12-01 DOI: 10.1002/admt.202200504

Yue Liu, Huayu Xu, Ming Dong, Renhou Han, J. Tao, Rongrong Bao, Caofeng Pan

{"title":"Highly Sensitive Wearable Pressure Sensor Over a Wide Sensing Range Enabled by the Skin Surface‐Like 3D Patterned Interwoven Structure","authors":"Yue Liu, Huayu Xu, Ming Dong, Renhou Han, J. Tao, Rongrong Bao, Caofeng Pan","doi":"10.1002/admt.202200504","DOIUrl":"https://doi.org/10.1002/admt.202200504","url":null,"abstract":"Flexible electronic equipment is an emerging field in recent years, which attaches more attention to be researched and applied in health monitoring and human–machine interface. However, for the existing pressure sensors, even a very slight pressure will greatly reduce their sensitivity, so it is an urgent problem to be solved for achieving high sensitivity and wide application range simultaneously. Hence, a high‐performance piezoresistive pressure sensor based on PAN nanofiber films (PAN NFs) and MXene (Ti3C2Tx) is proposed. The realization of high sensitivity and wide sensing range is based on the microstructure of accordion‐like MXene and the macrostructure of fluffy porous blowing spinning PAN nanofibers, which exhibits a high sensitivity of 81.89 kPa−1 over a wide sensing range of 0.83–38.13 kPa and the dynamic responses to external pressures can reach 98.73 kPa. The pressure sensors based on skin surface‐like 3D patterned interwoven structure are used for health monitoring and tiny pressure detecting. Moreover, the application in human–machine interface is demonstrated. Additionally, to meet the requirement of long‐term wearing, the structure of the sensor is optimized and endowed with excellent breathability and conformal properties, which promotes the further development of flexible electronic equipment.","PeriodicalId":7200,"journal":{"name":"Advanced Materials & Technologies","volume":"13 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78555900","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}

引用次数: 7

Micropipette‐Based Fabrication of Free‐Standing, Conducting Polymer Bilayer Actuators 基于微移液管的独立式导电聚合物双层致动器的制备

Advanced Materials & Technologies Pub Date : 2022-12-01 DOI: 10.1002/admt.202200686

Peikai Zhang, Bicheng Zhu, Yufei Luo, J. Travas-sejdic

{"title":"Micropipette‐Based Fabrication of Free‐Standing, Conducting Polymer Bilayer Actuators","authors":"Peikai Zhang, Bicheng Zhu, Yufei Luo, J. Travas-sejdic","doi":"10.1002/admt.202200686","DOIUrl":"https://doi.org/10.1002/admt.202200686","url":null,"abstract":"Electrically driven actuators have found widespread applications in biomimetics and soft robotics. Among different actuation materials, conducting polymers (CPs) have stood out due to their unique doping‐based actuation mechanism. Fabricating actuators at the microscale is particularly important, not only in the manufacturing of delicate biomimetic/robotic devices but also in advanced microphysiological studies. However, the choice for microfabrication techniques is limited, with the reported CP microactuators being mainly planar. To overcome this issue, a new micropipette‐based method is developed for the fabrication of free‐standing 3D CP actuators. The two‐layer actuator consists of a layer of PPy:CF3SO3, fabricated by localized electropolymerization, and a layer of PEDOT:PSS, fabricated by a “direct writing” technique. Due to the opposite contraction and expansion behavior of these two CPs, determined by the size of dopants, the electrically driven bending actuators have been demonstrated. This fabrication approach provides unprecedented capability for fabricating high aspect ratio microactuators: the 360° bending orientation of the actuators can be controlled by the relative position of the two layers. As a proof‐of‐principle, we demonstrate CP “micro‐tweezers” and the manipulation of a PDMS microsphere. The technique developed in this work opens exciting opportunities to manufacture advanced artificial muscles and sophisticated soft microrobotics.","PeriodicalId":7200,"journal":{"name":"Advanced Materials & Technologies","volume":"70 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89361045","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}

引用次数: 1

Laser Induced Graphene/Silicon Carbide: Core–Shell Structure, Multifield Coupling Effects, and Pressure Sensor Applications 激光诱导石墨烯/碳化硅:核壳结构、多场耦合效应和压力传感器应用

Advanced Materials & Technologies Pub Date : 2022-12-01 DOI: 10.1002/admt.202200441

Longsheng Lu, D. Zhang, Yingxi Xie, Heng-fei He, Wentao Wang

{"title":"Laser Induced Graphene/Silicon Carbide: Core–Shell Structure, Multifield Coupling Effects, and Pressure Sensor Applications","authors":"Longsheng Lu, D. Zhang, Yingxi Xie, Heng-fei He, Wentao Wang","doi":"10.1002/admt.202200441","DOIUrl":"https://doi.org/10.1002/admt.202200441","url":null,"abstract":"Latest advances have witnessed the laser scribing of various active materials from synthetic polymers to natural sources without masks, post‐treatment, or toxic substances. However, laser induced graphene (LIG) on renewable precursors usually requires flame‐retardant pretreatment and multistep pulsed or defocused irradiation. Laser scribing of silicon carbide (SiC) from polydimethylsiloxane (PDMS) is limited by its high transparency over a broad wavelength range. Here, a structural design strategy is adopted to solve these two dilemmas at the same time, that is, laser scribing of carbonized cloth/PDMS to prepare LIG/SiC composites. Natural cotton cloth is precarbonized and inserted in PDMS substrate to facilitate heat absorption for the in situ formation of SiC, while the soft PDMS attached to the carbonized cloth absorbs heat and isolates oxygen, enabling the conversion of amorphous carbon to LIG. Under these multifield coupling effects, a core–shell LIG/SiC electrode is formed on the carbonized cloth with tunable mass ratio, morphology, and graphene defects. Experimentally, the LIG/SiC pressure sensor exhibits a good sensitivity of 1.91 kPa−1 in the super‐wide sensing range of 0–226.7 kPa. By demonstrating different scenarios such as real‐time monitoring of large body movements, tiny pulses and heartbeats, the flexible pressure sensors hold great promise in wearable electronics.","PeriodicalId":7200,"journal":{"name":"Advanced Materials & Technologies","volume":"13 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90524580","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}

引用次数: 6

Inkjet Printing of Quasi‐2D Perovskite Layers with Optimized Drying Protocol for Efficient Solar Cells 准二维钙钛矿层的喷墨打印与高效太阳能电池的优化干燥方案

Advanced Materials & Technologies Pub Date : 2022-12-01 DOI: 10.1002/admt.202200606

Barbara Wilk, S. Sahayaraj, M. Ziółek, Vivek Babu, R. Kudrawiec, K. Wojciechowski

{"title":"Inkjet Printing of Quasi‐2D Perovskite Layers with Optimized Drying Protocol for Efficient Solar Cells","authors":"Barbara Wilk, S. Sahayaraj, M. Ziółek, Vivek Babu, R. Kudrawiec, K. Wojciechowski","doi":"10.1002/admt.202200606","DOIUrl":"https://doi.org/10.1002/admt.202200606","url":null,"abstract":"Metal halide perovskites of reduced dimensionality constitute an interesting subcategory of the perovskite semiconductor family, which attract a lot of attention, primarily due to their excellent moisture resistance and peculiar optoelectronic properties. Specifically, quasi‐2D materials of the Ruddlesden–Popper (RP) type, are intensely investigated as photoactive layers in perovskite solar cells. Here, a scalable deposition of quasi‐2D perovskite thin films, with a nominal composition of 4F‐PEA2MA4Pb5I16 (4‐FPEA+‐4‐fluoro‐phenethylammonium, applied as a spacer cation), using an inkjet printing technique, is developed. An optimized precursor formulation, and appropriate post‐printing treatment, which enable good control over nucleation and crystal growth steps, result in highly crystalline and uniform perovskite layers. Particularly, vacuum with nitrogen flushing provides an optimal drying treatment, which produces a more uniform distribution of low dimensional phases, and a high level of vertical (out‐of‐plane) alignment, which is beneficial for charge carrier transport. Solar cells reaching 13% of power conversion efficiency for the rigid, and 10.6% for the flexible, large area (1 cm2) devices are presented.","PeriodicalId":7200,"journal":{"name":"Advanced Materials & Technologies","volume":"9 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79944519","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}

引用次数: 5

Dynamic, Tunable, and Conformal Wearable Compression Using Active Textiles 动态，可调，适形可穿戴压缩使用活性纺织品

Advanced Materials & Technologies Pub Date : 2022-12-01 DOI: 10.1002/admt.202200467

R. Granberry, Megan Clarke, R. Pettys-Baker, Heidi Woelfle, Crystal Compton, Amy Ross, Kirstyn M. Johnson, S. Padula, Surbhi Shah, J. Abel, B. Holschuh

{"title":"Dynamic, Tunable, and Conformal Wearable Compression Using Active Textiles","authors":"R. Granberry, Megan Clarke, R. Pettys-Baker, Heidi Woelfle, Crystal Compton, Amy Ross, Kirstyn M. Johnson, S. Padula, Surbhi Shah, J. Abel, B. Holschuh","doi":"10.1002/admt.202200467","DOIUrl":"https://doi.org/10.1002/admt.202200467","url":null,"abstract":"New medical compression technologies that are simultaneously low‐profile, facile to don, and dynamic—applying medical compression only when needed—can expand the use of wearable compression, increase patient compliance, and lead to better medical outcomes. Dynamic and conformal wearable compression devices are presented that can be donned in a low‐stiffness state and transition into a high‐stiffness and, consequently, high‐compression state, on‐demand. These devices are enabled by active textiles developed from custom NiTi filaments that remain inactive at room temperature and accomplish actuation proximal to the human body surface. Further, these compression devices exploit NiTi material hysteresis to sustain a high‐compression state post‐heating and upon equilibrium with the body surface temperature for thermally‐comfortable, on‐body performance. Two case study examples—1) a consumer medical compression device and 2) a custom astronaut compression device—demonstrate the generalizability and flexibility of the engineering and design methods to develop a range of dynamic, tunable, and conformal compression devices with different goals and requirements. Further, this work demonstrates a roadmap for developing wearable systems that can accommodate a range of users without sacrificing system performance. This research opens doors for new NiTi‐based medical and consumer applications that interface with the body surface.","PeriodicalId":7200,"journal":{"name":"Advanced Materials & Technologies","volume":"78 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80811322","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}

引用次数: 2

Mass Fabrication of WS2 Nanodisks and their Scattering Properties WS2纳米片的大规模制备及其散射特性

Advanced Materials & Technologies Pub Date : 2022-12-01 DOI: 10.1002/admt.202200432

Churong Ma, Fangrong Zhou, Pengfei Huang, Mengmeng Li, Feng Zhao, Yingqi Liu, Chun Du, Xiang Li, B. Guan, Kai Chen

{"title":"Mass Fabrication of WS2 Nanodisks and their Scattering Properties","authors":"Churong Ma, Fangrong Zhou, Pengfei Huang, Mengmeng Li, Feng Zhao, Yingqi Liu, Chun Du, Xiang Li, B. Guan, Kai Chen","doi":"10.1002/admt.202200432","DOIUrl":"https://doi.org/10.1002/admt.202200432","url":null,"abstract":"High‐index all‐dielectric resonators have been developed into an important platform for light manipulation at the nanoscale over the past decade. Although they are widely used as 2D materials, transition metal dichalcogenides (TMDCs), as an emerging all‐dielectric material, have also been used to fabricate optical nanoantennas that support multipolar Mie resonances. However, their fabrication depends heavily on electron‐beam lithography (EBL) or focused ion beam (FIB), which is expensive and time‐consuming for practical applications. To address this issue, here, a fast low‐cost method is put forward which combines polystyrene (PS) nanospheres with physical vapor deposition by electron‐beam evaporation and magnetron sputtering to fabricate WS2 nanodisks in a mass‐production manner. After annealing, the A‐ and B‐exciton features as well as anapole states are observed in the scattering spectra of WS2 nanodisks. The light scattering anisotropy of individual WS2 nanodisks and spectral tunability of the anapole are studied. In addition, absorption enhancement due to the strong field localization of anapole states in hexagonal WS2 nanodisk arrays is numerically demonstrated. This work manifests that this etching‐free method is promising for fabrication of scalable TMDC nanodisks suitable for practical applications.","PeriodicalId":7200,"journal":{"name":"Advanced Materials & Technologies","volume":"19 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84000914","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}

引用次数: 3

Planar Polymer Optical Waveguide with Metal‐Organic Framework Coating for Carbon Dioxide Sensing 用于二氧化碳传感的金属-有机框架涂层平面聚合物光波导

Advanced Materials & Technologies Pub Date : 2022-12-01 DOI: 10.1002/admt.202200395

Lei Zheng, N. Keppler, Huajun Zhang, Peter Behrens, B. Roth

引用次数: 13

Tunable Chemical Reactivity and Selectivity of WO3/TiO2 Heterojunction for Gas Sensing Applications 用于气敏应用的WO3/TiO2异质结的可调化学反应性和选择性

Advanced Materials & Technologies Pub Date : 2022-12-01 DOI: 10.1002/admt.202201751

V. Galstyan, N. Poli, V. Golovanov, A. D’arco, S. Macis, S. Lupi, E. Bolli, S. Kaciulis, A. Mezzi, E. Comini

{"title":"Tunable Chemical Reactivity and Selectivity of WO3/TiO2 Heterojunction for Gas Sensing Applications","authors":"V. Galstyan, N. Poli, V. Golovanov, A. D’arco, S. Macis, S. Lupi, E. Bolli, S. Kaciulis, A. Mezzi, E. Comini","doi":"10.1002/admt.202201751","DOIUrl":"https://doi.org/10.1002/admt.202201751","url":null,"abstract":"Nowadays, there is a dramatically growing demand for nanocomposite materials with new functionalities for their application in chemical gas sensors and other catalytic devices. Moreover, green synthesis methods are intensively employed in the preparation of semiconductor nanostructures to reduce the hazardous effects on human health and the environment. Here the fabrication of a nanocomposite material based on WO3 and TiO2 (WO3/TiO2) with unusual electronic band alignment and novel gas sensing properties is reported. The material is synthesized by an eco‐friendly process based on the water vapor‐induced oxidation of tungsten/titanium metallic films. The pristine WO3 is highly sensitive to acetone, where the response of the material is enhanced by its operating temperature. Instead, WO3/TiO2 composite shows principally different sensing performance and it has a good selective response to carbon monoxide at a relatively low operating temperature. The obtained results indicate that the significant differences between the functionalities of pristine WO3 and WO3/TiO2 material can be attributed to the band alignment and the direction of charge transfer in the WO3/TiO2 heterojunction. Hence, an efficient way for the development of WO3/TiO2 nanocomposites, which can be useful for the engineering and optimization of gas sensing and catalytic properties of WO3, is presented.","PeriodicalId":7200,"journal":{"name":"Advanced Materials & Technologies","volume":"1069 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77270295","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}

引用次数: 2

Self‐Alignment Embedded Thin‐Film Transistor with High Transparency and Optimized Performance 具有高透明度和优化性能的自对准嵌入式薄膜晶体管

Advanced Materials & Technologies Pub Date : 2022-08-05 DOI: 10.1002/admt.202200879

Fei Zheng, Lei Li, Luodan Hu, Xiaoqing Huang, Tze-Peng Kuo, Kuan‐Chang Chang

{"title":"Self‐Alignment Embedded Thin‐Film Transistor with High Transparency and Optimized Performance","authors":"Fei Zheng, Lei Li, Luodan Hu, Xiaoqing Huang, Tze-Peng Kuo, Kuan‐Chang Chang","doi":"10.1002/admt.202200879","DOIUrl":"https://doi.org/10.1002/admt.202200879","url":null,"abstract":"Amorphous oxide semiconductor thin‐film transistors (AOS TFTs) have shown significant potential in the applications of increasingly advanced transparent and flexible electronic devices, where high speed, high transparency, and low power consumption are highly demanded. Yet, typical back‐channel etch (BCE) configuration used in the majority of TFTs still suffers from poor gate controllability, severe electrical field dispersion, relatively large parasitic capacitance and contact resistance. Here, a new embedded structure for TFTs with self‐alignment and even simpler fabrication process, outperforming conventional BCE counterpart in above aspects, is proposed in this work. More concentrated electrical field, improved gate control ability accompanied with lower contact resistance are achieved in the embedded TFTs. Consequently, superior electrical characteristics with subthreshold swing of 106.7 mV dec−1 and mobility as high as 32.10 cm2 V−1 s−1 are obtained. In addition, leakage current as well as contact resistance evidently decline compared to that in traditional BCE TFTs. By the assistance of Silvaco TCAD simulation, the performance and mechanism behind are cross‐validated from another perspective. Overall, such embedded configuration has equipped TFTs with appealing performance and it is also possible to enable other devices exploiting such structure with new possibility and thus a broader application.","PeriodicalId":7200,"journal":{"name":"Advanced Materials & Technologies","volume":"174 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79630654","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}

引用次数: 2

Low‐Power‐Consumption, Reversible 3D Optical Storage Based on Selectively Laser‐Induced Photoluminescence Degradation in CsPbBr3 Quantum Dots Doped Glass 基于CsPbBr3量子点掺杂玻璃选择性激光诱导光致发光降解的低功耗、可逆3D光存储

Advanced Materials & Technologies Pub Date : 2022-08-05 DOI: 10.1002/admt.202200470

Shengzhi Sun, Zhonghui Cheng, Juan Song, Chaoyue Yan, T.P.M. Man, G. Dong, B. Qian, Jianrong Qiu

{"title":"Low‐Power‐Consumption, Reversible 3D Optical Storage Based on Selectively Laser‐Induced Photoluminescence Degradation in CsPbBr3 Quantum Dots Doped Glass","authors":"Shengzhi Sun, Zhonghui Cheng, Juan Song, Chaoyue Yan, T.P.M. Man, G. Dong, B. Qian, Jianrong Qiu","doi":"10.1002/admt.202200470","DOIUrl":"https://doi.org/10.1002/admt.202200470","url":null,"abstract":"In recent years, inorganic lead halide perovskite quantum dots have been used in various optoelectronic fields for their excellent luminescence properties, such as narrow emission bands, ultra‐wide tunable emission wavelength, and high quantum efficiency. In this paper, different from luminescence optimization in most research, luminescence degradation of perovskite quantum dots is addressed by femtosecond laser irradiation and successfully used for three‐dimensional data storage in CsPbBr3 quantum dots doped glass. Photoluminescence (PL) degradation can be finely modulated by adjusting the laser parameters. PL degradation mechanism, investigated by optical spectroscopy and morphology characterization, is attributed to laser‐induced decomposition, recrystallization, and defection of CsPbBr3 quantum dots. Laser‐induced PL degradation and the followed PL recovery by heat treatment are repeated for several cycles, showing good reversibility. Multilayer PL degradation patterns are written into the glass and read out without crosstalk, indicating high‐reliability 3D optical storage characteristics. Amazingly, PL degradation can be induced by just a low‐energy single laser pulse with estimated subpicosecond writing time per bit, demonstrating its potential in high‐speed, low‐power consumption 3D optical storage.","PeriodicalId":7200,"journal":{"name":"Advanced Materials & Technologies","volume":"20 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79059377","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}

引用次数: 0