材料科学最新文献_第6页

Operando Characterization of Dendrite-Free Silver Nanoparticle/Lithium Metal Powder Composite Anodes.

IF 9.5 2区材料科学

ACS Applied Materials & Interfaces Pub Date : 2025-05-12 DOI: 10.1021/acsami.5c04693

Kennedy Ssendagire,Isheunesu Phiri,Sun-Yul Ryou

{"title":"Operando Characterization of Dendrite-Free Silver Nanoparticle/Lithium Metal Powder Composite Anodes.","authors":"Kennedy Ssendagire,Isheunesu Phiri,Sun-Yul Ryou","doi":"10.1021/acsami.5c04693","DOIUrl":"https://doi.org/10.1021/acsami.5c04693","url":null,"abstract":"Li metal powder (LMP) can be used to produce Li metal anodes that are wider and thinner than existing Li metal foils at a lower price; consequently, it is attracting attention as a promising anode material for secondary high-energy density Li metal batteries (LMBs). In the present study, operando microscopy is adopted to decipher the effects of a lithiophilic nanoadditive─Ag nanoparticles (AgNPs)─on the electrochemical behavior of LMP-based Li metal anodes. A composite Li metal anode is fabricated by implanting AgNPs into LMP, and the surface morphological changes and electrochemical behaviors are analyzed during electrochemical cycling. The obtained results provide deep insights into the role of AgNPs in stabilizing LMP-based Li metal anodes. Essentially, the AgNPs form a Li ion-conducting Li-Ag alloy during cycling and provide favorable large-area nucleation sites throughout the LMP-based Li metal anode, thereby suppressing vertical Li dendrite growth. Overall, a 40 μm thick Li metal anode of the AgNP/LMP composite (AgLMP) exhibits a stable cycling performance over 500 cycles, sustaining 73.6% of the initial discharge capacity at 0.3C (0.231 mA cm-2, charging)/0.5C (0.385 mA cm-2, discharging) in Li||NCM433 metal cells. This report highlights the viability of using AgNPs to boost the electrochemical performance of LMP electrodes.","PeriodicalId":5,"journal":{"name":"ACS Applied Materials & Interfaces","volume":"13 1","pages":""},"PeriodicalIF":9.5,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143932755","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}

引用次数: 0

Nonlinear Metasurfaces for Completed Control of Amplitude, Phase, and Polarization in Broadband Terahertz Generation.

IF 29.4 1区材料科学

Advanced Materials Pub Date : 2025-05-12 DOI: 10.1002/adma.202500392

Qingwei Wang,Xueqian Zhang,Quan Xu,Xi Feng,Li Niu,Xieyu Chen,Yongchang Lu,Jian Feng,Ming Fang,Xixiang Zhang,Weili Zhang,Jiaguang Han

{"title":"Nonlinear Metasurfaces for Completed Control of Amplitude, Phase, and Polarization in Broadband Terahertz Generation.","authors":"Qingwei Wang,Xueqian Zhang,Quan Xu,Xi Feng,Li Niu,Xieyu Chen,Yongchang Lu,Jian Feng,Ming Fang,Xixiang Zhang,Weili Zhang,Jiaguang Han","doi":"10.1002/adma.202500392","DOIUrl":"https://doi.org/10.1002/adma.202500392","url":null,"abstract":"Terahertz (THz) generation is a crucial initial step in THz applications. However, the current THz sources face challenges in fully controlling the propagation properties of generated THz waves without the use of external devices. This limitation leads to bulky systems with unavoidable insertion losses and bandwidth constraints. To overcome these challenges and facilitate compact and versatile THz applications, a novel approach using nonlinear metasurfaces is proposed to control the amplitude, phase, and polarization of broadband THz waves directly and simultaneously at the emission stage. The basic design features an elaborated coupling-controlled chiral meta-atom, providing adjustable chirality and allowing an independent amplitude and phase control strategy under a circularly polarized (CP) pump. Furthermore, the polarization state of emitted THz wave can be arbitrarily customized by designing the superposition of the generated left-handed circularly polarized (LCP) and right-handed circularly polarized (RCP) components. This control is linearly predictable, eliminating the need for complex nonlinear simulations and interleaved supercell arrangements. The effectiveness of this method is demonstrated by experimentally generating two types of unique vectorial THz fields: spatial-polarization separable and nonseparable states. The proposed approach significantly enhances the capabilities of nonlinear metasurfaces, paving the way for versatile THz generation devices.","PeriodicalId":114,"journal":{"name":"Advanced Materials","volume":"12 1","pages":"e2500392"},"PeriodicalIF":29.4,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143932794","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}

引用次数: 0

Empowering Generalist Material Intelligence with Large Language Models.

IF 29.4 1区材料科学

Advanced Materials Pub Date : 2025-05-12 DOI: 10.1002/adma.202502771

Wenhao Yuan,Guangyao Chen,Zhilong Wang,Fengqi You

{"title":"Empowering Generalist Material Intelligence with Large Language Models.","authors":"Wenhao Yuan,Guangyao Chen,Zhilong Wang,Fengqi You","doi":"10.1002/adma.202502771","DOIUrl":"https://doi.org/10.1002/adma.202502771","url":null,"abstract":"Large language models (LLMs) are steering the development of generalist materials intelligence (GMI), a unified framework integrating conceptual reasoning, computational modeling, and experimental validation. Central to this framework is the agent-in-the-loop paradigm, where LLM-based agents function as dynamic orchestrators, synthesizing multimodal knowledge, specialized models, and experimental robotics to enable fully autonomous discovery. Drawing from a comprehensive review of LLMs' transformative impact across representative applications in materials science, including data extraction, property prediction, structure generation, synthesis planning, and self-driven labs, this study underscores how LLMs are revolutionizing traditional tasks, catalyzing the agent-in-the-loop paradigm, and bridging the ontology-concept-computation-experiment continuum. Then the unique challenges of scaling up LLM adoption are discussed, particularly those arising from the misalignment of foundation LLMs with materials-specific knowledge, emphasizing the need to enhance adaptability, efficiency, sustainability, interpretability, and trustworthiness in the pursuit of GMI. Nonetheless, it is important to recognize that LLMs are not universally efficient. Their substantial resource demands and inconsistent performance call for careful deployment based on demonstrated task suitability. To address these realities, actionable strategies and a progressive roadmap for equitably and democratically implementing materials-aware LLMs in real-world practices are proposed.","PeriodicalId":114,"journal":{"name":"Advanced Materials","volume":"37 1","pages":"e2502771"},"PeriodicalIF":29.4,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143932795","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}

引用次数: 0

Bioinspired Integrated Auxetic Conductive Elastomer Composite With High Stretchability and Robust Interface.

IF 13.3 2区材料科学

Small Pub Date : 2025-05-12 DOI: 10.1002/smll.202504272

Jiawei Li,Yaning Ma,Zihan Zhao,Zhiran Zheng,Junpeng Gao,Jie Hao,Jigang Yang,Baoyan Zhang,Jun Hu

{"title":"Bioinspired Integrated Auxetic Conductive Elastomer Composite With High Stretchability and Robust Interface.","authors":"Jiawei Li,Yaning Ma,Zihan Zhao,Zhiran Zheng,Junpeng Gao,Jie Hao,Jigang Yang,Baoyan Zhang,Jun Hu","doi":"10.1002/smll.202504272","DOIUrl":"https://doi.org/10.1002/smll.202504272","url":null,"abstract":"Auxetic conductive elastomers (ACEs) are appealing due to their unique negative Poisson's ratio (NPR) effects. Nevertheless, conventional ACEs are often produced by the creation of geometric structures through pore-forming techniques on conductive elastomers, which substantially compromise their mechanical and conductive performance. Inspired by the composite structure of skin comprising collagen fibers and elastin, this study reports an integrated auxetic conductive elastomer (IACE) composite composing a high-modulus conductive elastomer as the auxetic skeleton and a low-modulus conductive elastomer as the soft matrix. Benefitting from the covalent interlinkages and topological entanglements at the skeleton-matrix interface, the IACE is flat and void-free with no abrupt soft-to-hard transition. Compared to the auxetic skeleton alone, the IACE exhibits enhanced mechanical properties, including a fracture stress of 2.6 MPa, an elongation at break of 457%, and a toughness of 7.2 MJ m-3. Furthermore, its auxetic behavior with NPR effect is consistently observed across a wide strain range of 0-85%. Leveraging the unique ion transport pathway enabled by auxetic deformation, the IACE demonstrates reliable sensing performance with improved sensitivity over a broad deformation range. This work presents a promising strategy for developing ACEs with the robust interface and wide auxetic strain, advancing their potentials in intelligent flexible electronics.","PeriodicalId":228,"journal":{"name":"Small","volume":"17 1","pages":"e2504272"},"PeriodicalIF":13.3,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143932970","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}

引用次数: 0

Polarization Sensitive Vacuum-Ultraviolet Photodetectors Based on m-Plane h-BN.

IF 29.4 1区材料科学

Advanced Materials Pub Date : 2025-05-12 DOI: 10.1002/adma.202503846

Le Chen,Ze Long,Jishan Liu,Lu Liu,Zhongyuan Han,Kexiong Zhang,Hongwei Liang,Hong Yin

{"title":"Polarization Sensitive Vacuum-Ultraviolet Photodetectors Based on m-Plane h-BN.","authors":"Le Chen,Ze Long,Jishan Liu,Lu Liu,Zhongyuan Han,Kexiong Zhang,Hongwei Liang,Hong Yin","doi":"10.1002/adma.202503846","DOIUrl":"https://doi.org/10.1002/adma.202503846","url":null,"abstract":"Vacuum ultraviolet (VUV) detection plays an essential role in space science, radiation monitoring, electronic industry, and fundamental research. Integrating polarization characteristics into VUV detection enriches the comprehension of the target attributes and broadens the signal dimensionality. Polarization detection has been widely developed in visible and infrared regions; however, it is still relatively unexplored in VUV light due to the lack of photoactive materials with low-symmetry structures, VUV selective response and radiation resistance. Here, the wafer-scale hexagonal boron nitride (h-BN) epitaxial films with the distinct m-plane surfaces are demonstrated that exhibit significant anisotropy due to space symmetry breaking, instead of the routinely obtained high-symmetry c-planes governed by the most thermodynamically stable growth mode. This results in notable anisotropy in light absorption and charge density distributions, yielding a dichroic ratio greater than 10 and a carrier transport efficiency ratio (μτa -axis/μτc -axis) of 24. The h-BN based detector achieves a high polarization ratio of 6.2 for 188 nm VUV polarized light, reaching the short-wavelength limit of the reported polarization-sensitive photodetectors. This work presents an effective strategy for designing polarized VUV photodetector from h-BN, and paves the road towards the novel integrated optoelectronics, photonics and electronics based on traditional 2D materials.","PeriodicalId":114,"journal":{"name":"Advanced Materials","volume":"1 1","pages":"e2503846"},"PeriodicalIF":29.4,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143932990","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}

引用次数: 0

Polishing mechanism of single-crystal silicon in fixed-abrasive chemical mechanical polishing with different solutions

IF 6.7 2区材料科学

Applied Surface Science Pub Date : 2025-05-11 DOI: 10.1016/j.apsusc.2025.163494

Xiaozhe Yang, Shenglong Zhang, Fangming Lian, Xu Yang, Kazuya Yamamura, Zhuangde Jiang

{"title":"Polishing mechanism of single-crystal silicon in fixed-abrasive chemical mechanical polishing with different solutions","authors":"Xiaozhe Yang, Shenglong Zhang, Fangming Lian, Xu Yang, Kazuya Yamamura, Zhuangde Jiang","doi":"10.1016/j.apsusc.2025.163494","DOIUrl":"https://doi.org/10.1016/j.apsusc.2025.163494","url":null,"abstract":"Chemical mechanical polishing (CMP) is a widely used polishing technique for Si wafers, but cost and environmental concerns have always been open questions. This study proposed a novel fixed-abrasive CMP (FACMP) using environmentally friendly salt solutions to improve polishing efficiency while reducing polishing costs. The surface modification of the Si surface in three kinds of salt solutions, i.e., ultrapure water, NaCl and Na2CO3 aqueous solutions, was investigated via three modification experiments and molecular dynamics (MD) simulations. Surface modification, mainly oxidation of the Si surface, occurred in these three liquids. Na2CO3 aqueous solution was found to be an effective liquid for modifying the Si surface, in which the highest modification rate was obtained. Etching of the Si surface occurred in the Na2CO3 aqueous solution, and CO32– ions were involved in the modification and etching of the Si surface; an etching rate of 0.14 μm/h was observed. In addition, FACMP of 4-inch Si wafers was conducted in these three liquids, and the highest material removal rate of 4.252 μm/h was obtained in the Na2CO3 aqueous solution. This study provides a possible way to realize a low-cost, high-efficiency, and environmentally friendly polishing method for Si wafers and even other semiconductor materials.","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"126 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143932597","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}

引用次数: 0

All-Optical and Ultrafast Control of High-Order Exciton-Polariton Orbital Modes

IF 10.8 1区材料科学

Nano Letters Pub Date : 2025-05-11 DOI: 10.1021/acs.nanolett.5c01575

Yuyang Zhang, Xin Zeng, Wenna Du, Zhiyong Zhang, Yuexing Xia, Jiepeng Song, Jianhui Fu, Shuai Zhang, Yangguang Zhong, Yubo Tian, Yiyang Gong, Shuai Yue, Yuanyuan Zheng, Xiaotian Bao, Yutong Zhang, Qing Zhang, Xinfeng Liu

{"title":"All-Optical and Ultrafast Control of High-Order Exciton-Polariton Orbital Modes","authors":"Yuyang Zhang, Xin Zeng, Wenna Du, Zhiyong Zhang, Yuexing Xia, Jiepeng Song, Jianhui Fu, Shuai Zhang, Yangguang Zhong, Yubo Tian, Yiyang Gong, Shuai Yue, Yuanyuan Zheng, Xiaotian Bao, Yutong Zhang, Qing Zhang, Xinfeng Liu","doi":"10.1021/acs.nanolett.5c01575","DOIUrl":"https://doi.org/10.1021/acs.nanolett.5c01575","url":null,"abstract":"Exciton-polaritons flows within closed quantum circuits can spontaneously form phase-locked modes that carry orbital angular momentum (OAM). With its infinite set of angular momentum quantum numbers (ℏ), high-order OAM represents a transformative solution to the bandwidth bottleneck in multiplexed optical communication. However, its practical application is hindered by the limited choice of materials which in general requires cryogenic temperatures and the reliance on mechanical switching. In this work, we achieve stable and high-order (up to order of 33) OAM modes by constructing a closed quantum circuit using the halide perovskite microcavities at room temperature. By controlling the spatial and temporal symmetry of the closed quantum circuits using another laser pulse, we achieve significant tuning OAM of EP flows from 8ℏ to 12ℏ. Our work demonstrates all-optical and ultrafast control of high-order OAM using exciton-polariton condensates in perovskite microcavities that would have important applications in high-throughput optical communications.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"55 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143932663","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}

引用次数: 0

Temperature-dependent processes of electric-induced antiferroelectric-to-ferroelectric phase transition 电致反铁电-铁电相变的温度依赖过程

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-05-11 DOI: 10.1016/j.scriptamat.2025.116739

Tiantian Wu , Zhengqian Fu , Linhai Li , Xu Wang , Yue Luo , Ziyi Yu , Xuefeng Chen , Genshui Wang , Bin Xu , Fangfang Xu

{"title":"Temperature-dependent processes of electric-induced antiferroelectric-to-ferroelectric phase transition","authors":"Tiantian Wu , Zhengqian Fu , Linhai Li , Xu Wang , Yue Luo , Ziyi Yu , Xuefeng Chen , Genshui Wang , Bin Xu , Fangfang Xu","doi":"10.1016/j.scriptamat.2025.116739","DOIUrl":"10.1016/j.scriptamat.2025.116739","url":null,"abstract":"<div><div>PbZrO3-based antiferroelectric materials are one of the most important candidates for high-power energy storage capacitors. Since the antiferroelectric structure is characterized by polar modulated configurations, the processes of antiferroelectric-to-ferroelectric phase transition could vary, depending on external stimulus. Here, we report temperature-tailored processes of electric field-induced antiferroelectric-to-ferroelectric transition in (Pb0.93Sr0.06)(Zr0.98Ti0.02)0.98Nb0.02O3 (PSNZT), which change from single to multiple, and then back to single phase transitions at elevated temperatures. By applying in-situ heating X-ray diffraction and in-situ heating transmission electron microscopy, we revealed that the modulation of phase transition processes stems from the changing of dominant structural factors from atomic displacement ordering to modulation periods upon heating. The present findings will promote further understanding and exploration of antiferroelectric-to-ferroelectric phase transitions.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"265 ","pages":"Article 116739"},"PeriodicalIF":5.3,"publicationDate":"2025-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143931453","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}

引用次数: 0

Influence of self-assembled perfluoroalkylsilane monolayers on wettability and tribological properties of graphene derivatives films

IF 6.7 2区材料科学

Applied Surface Science Pub Date : 2025-05-11 DOI: 10.1016/j.apsusc.2025.163466

M. Cichomski, K. Spilarewicz, E. Borkowska, A. Kisielewska, R. Stanecka-Badura, M. Dudek, I. Piwoński

引用次数: 0

Synthesis of waterborne multi-branched sulfonated lignin-based amphiphilic polyurethane and its application in fabric coatings 水性多支磺化木质素基两亲聚氨酯的合成及其在织物涂料中的应用

IF 6.5 2区材料科学

Progress in Organic Coatings Pub Date : 2025-05-11 DOI: 10.1016/j.porgcoat.2025.109372

Longhai Yi, Sheng Dai, Ajiao Zhao, Hua Qiu, Kunlin Chen

{"title":"Synthesis of waterborne multi-branched sulfonated lignin-based amphiphilic polyurethane and its application in fabric coatings","authors":"Longhai Yi, Sheng Dai, Ajiao Zhao, Hua Qiu, Kunlin Chen","doi":"10.1016/j.porgcoat.2025.109372","DOIUrl":"10.1016/j.porgcoat.2025.109372","url":null,"abstract":"<div><div>Textiles often subjected to a variety of challenging environments during outdoor use. To improve the performance and lifespan of textiles, this study presents the development of a flexible fabric coating based on waterborne multi-branched sulfonated lignin-based amphiphilic polyurethane. The coating incorporates a specially designed perfluorinated alcohol chain extender, along with choline phosphate glycol and biomass material lignin as additional chain extenders integrated into the polyurethane side chains. The introduction of polyethylene glycol with varying molecular weights was conducted to explore how polymerization degree of the hydrophilic soft segment in polyurethane influences the coating's waterproof and moisture-permeable properties. The findings indicated that incorporating polyethylene glycol-1000 as the soft segment could effectively balance the hydrophobic and breathable moisture-permeable properties of the coating. The effect of sulfonated lignin content on the UV resistance of the coating was further investigated. At a sulfonated lignin content reached 6 wt%, the coated fabric demonstrated exceptional UV shielding capabilities. Moreover, due to the amphoteric ionic side chain and terminated sulfonated lignin of polyurethane, the fabric coating exhibited excellent antibacterial properties, with an inhibition rate exceeding 99.9 % against Staphylococcus aureus and Escherichia coli. This fabric coating is suitable for use in outdoor clothing, protective gear, outdoor tents, and other fields.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"206 ","pages":"Article 109372"},"PeriodicalIF":6.5,"publicationDate":"2025-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143931392","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}

引用次数: 0