Nanotechnology最新文献_第7页

Ab initiostudy of flexoelectricity in MXene monolayers. MXene单层膜挠性电的从头算研究。

IF 2.8 4区材料科学

Nanotechnology Pub Date : 2025-09-08 DOI: 10.1088/1361-6528/ae0045

Shashikant Kumar, Zixi Zhang, Phanish Suryanarayana

引用次数: 0

Energy-band engineering and deep-ultraviolet photodetection of Ga₂O₃alloys: a concise review. Ga2O3合金的能带工程和深紫外光探测：简要综述。

IF 2.8 4区材料科学

Nanotechnology Pub Date : 2025-09-05 DOI: 10.1088/1361-6528/ae0043

Zeng Liu, Zhaoying Xi, Linhai Gu, Sihan Yan, Rui Zhang, Xu Zhang, Hongbo Wang, Jia-Han Zhang, Weihua Tang

{"title":"Energy-band engineering and deep-ultraviolet photodetection of Ga2O3alloys: a concise review.","authors":"Zeng Liu, Zhaoying Xi, Linhai Gu, Sihan Yan, Rui Zhang, Xu Zhang, Hongbo Wang, Jia-Han Zhang, Weihua Tang","doi":"10.1088/1361-6528/ae0043","DOIUrl":"10.1088/1361-6528/ae0043","url":null,"abstract":"Gallium oxide (Ga2O3)-based solar-blind ultraviolet photodetectors gained much attention for their promising prospects in new-generation solid-state optoelectronics and electronics. Catering for the demands of broadband photodetection, tunable energy-band, adjusted carrier concentration and effective carrier transition, alloying engineering through doping is gradually launched as one of the research emphases. This review is proposed to understand the photodetection performances in view of energy-band engineering. Especially for the representative (InxGa1-x)2O3and (AlyGa1-y)2O3alloys, the conduction band edges upshift as the empty Al 3 s and In 5 s states are introduced with higher energy, hybridize with Ga 4 s state. This leads to a result that low effective electron mass and high electron mobility could be achieved, contributing to high quality tunable performances of solar-blind UV photodetection. Thus, in this concise review article, the alloyed Ga2O3for photodetection would be reviewed and discussed based on the current developments, from the viewpoint of energy-band theory.","PeriodicalId":19035,"journal":{"name":"Nanotechnology","volume":" ","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144961684","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Scalable laser fabrication of disordered dual-purpose silver nanostructures towards secure plasmonic devices. 面向安全等离子体器件的无序双用途银纳米结构的可扩展激光制备。

IF 2.8 4区材料科学

Nanotechnology Pub Date : 2025-09-03 DOI: 10.1088/1361-6528/adf563

Dimitrios Ntemogiannis, Vagelis Karoutsos, Panagiotis Poulopoulos, Dimitris Alexandropoulos

{"title":"Scalable laser fabrication of disordered dual-purpose silver nanostructures towards secure plasmonic devices.","authors":"Dimitrios Ntemogiannis, Vagelis Karoutsos, Panagiotis Poulopoulos, Dimitris Alexandropoulos","doi":"10.1088/1361-6528/adf563","DOIUrl":"10.1088/1361-6528/adf563","url":null,"abstract":"Plasmonic nanoparticles (NPs) are widely utilized in various applications including sensing and imaging due to their strong localized surface plasmon resonances (LSPRs). Recently, plasmonic NP assemblies and configurations have also been explored as physical unclonable functions (PUFs) for security applications, however, many existing PUF designs face challenges such as complex fabrication processes and high costs, which complicate their implementation. This study introduces a scalable and practical approach to fabricate disordered self-assembled silver NPs for use as dual-purpose features in plasmonic devices. These nanostructures could offer multifunctionality by simultaneously serving as a functional plasmonic feature and as a potential PUF, providing an extra security layer in the device configuration. The proposed nanostructuring method could support the large-scale production of plasmonic nanostructures with desirable LSPR characteristics, essential for diverse plasmonic applications, while their structural uniqueness enables their potential exploitation as unclonable PUF fingerprints. In this work, disordered silver NPs were grown via laser annealing of silver ultrathin films with thicknesses ranging from 12.5 to 15 nm. Ultraviolet-visible spectroscopy and atomic force microscopy revealed high-intensity LSPRs and unique nanopatterns, demonstrating their potential multifunctionality.","PeriodicalId":19035,"journal":{"name":"Nanotechnology","volume":" ","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144743079","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Plasmon-enhanced self-powered MoS₂photodetector viain-situsilver nanoparticle integration for real-time optical communication. 用于实时光通信的等离子体增强自供电mos2光电探测器。

IF 2.8 4区材料科学

Nanotechnology Pub Date : 2025-09-01 DOI: 10.1088/1361-6528/adfd65

Mousumi Pramanik, Pritam Sinha, Achintya Singha, Kaustuv Das

{"title":"Plasmon-enhanced self-powered MoS2photodetector viain-situsilver nanoparticle integration for real-time optical communication.","authors":"Mousumi Pramanik, Pritam Sinha, Achintya Singha, Kaustuv Das","doi":"10.1088/1361-6528/adfd65","DOIUrl":"https://doi.org/10.1088/1361-6528/adfd65","url":null,"abstract":"Silver nanoparticle (NP)-decorated molybdenum disulfide (MoS2) microflowers are presented as a novel platform for high-performance, self-powered broadband photodetectors. In this work, MoS2microflowers embedded with optimally sized Ag NPs are synthesized via a, eliminating post-deposition processes and enabling uniform NP distribution with strong plasmon-semiconductor interaction. The resulting device exhibits a broad photoresponse from 400 nm to 1100 nm, covering the visible to near-infrared spectrum. Under low illumination (2µW cm-2), it achieves a responsivity of ∼1.9 × 102A W-1and a specific detectivity of ∼4.61 × 1011Jones at bias voltage of 5.0 V, significantly outperforming most reported Ag-MoS2systems. This enhanced performance is attributed to efficient plasmon-exciton coupling and hot electron injection facilitated by the Ag NPs. Importantly, the device generates a measurable photocurrent at zero bias, confirming truly self-powered operation. As a proof of concept, the photodetector is integrated into a real-time optical communication setup, successfully receiving and decoding alphanumeric and binary signals. These results highlight the technological promise ofin-situplasmonic 2D semiconductor hybrids for next-generation, broadband, low-power optoelectronic applications.","PeriodicalId":19035,"journal":{"name":"Nanotechnology","volume":"36 35","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144962022","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

High-performance photodetector based on MoS₂/vertical graphene. 基于MoS2/垂直石墨烯的高性能光电探测器。

IF 2.8 4区材料科学

Nanotechnology Pub Date : 2025-09-01 DOI: 10.1088/1361-6528/adfdee

Yifei Ma, Ke Fan, Sai Huang, Zhaomin Tong, Liantuan Xiao, Suotang Jia, Xuyuan Chen, Mei Wang

{"title":"High-performance photodetector based on MoS2/vertical graphene.","authors":"Yifei Ma, Ke Fan, Sai Huang, Zhaomin Tong, Liantuan Xiao, Suotang Jia, Xuyuan Chen, Mei Wang","doi":"10.1088/1361-6528/adfdee","DOIUrl":"https://doi.org/10.1088/1361-6528/adfdee","url":null,"abstract":"Graphene offers a broad spectral response as a photodetector sensing layer with its zero-bandgap structure. However, its atomic thickness restricts light absorption to merely about 2% in the visible spectrum. To address this, MoS2has been integrated with graphene to form heterojunctions, thereby enhancing light absorption and facilitating efficient electron-hole pair separation. Nevertheless, this approach involves complex transfer processes and still leaves room for improving light absorption efficiency. This study presents the fabrication of a high-performance photodetector based on a MoS2/vertical graphene (VG) composite. VG, prepared via plasma-enhanced chemical vapor deposition (CVD), provides an ultra-high absorption rate of 97% across the 400-2000 nm wavelength range. Few-layer MoS2is directly grown on VG using CVD process, thereby eliminating the transfer process. The resulting MoS2/VG based photodetector inherits VG's superior light absorption, exhibiting significantly enhanced photocurrent responses, with a responsivity of 10.4 mA W-1and rise/decay times lower than 300 ms. The detector exemplifies the synergistic enhancement between MoS2and VG, highlighting its significant potential for future broadband optoelectronic applications.","PeriodicalId":19035,"journal":{"name":"Nanotechnology","volume":"36 35","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144962027","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Pt-W alloy absorbers for high-NA EUV lithography: tunable optical and etching performance. 用于高na EUV光刻的Pt-W合金吸收器：可调光学和蚀刻性能。

IF 2.8 4区材料科学

Nanotechnology Pub Date : 2025-08-27 DOI: 10.1088/1361-6528/adf8f5

Yunsoo Kim, Dongmin Jeong, Seungho Lee, Taeho Lee, Jinho Ahn

{"title":"Pt-W alloy absorbers for high-NA EUV lithography: tunable optical and etching performance.","authors":"Yunsoo Kim, Dongmin Jeong, Seungho Lee, Taeho Lee, Jinho Ahn","doi":"10.1088/1361-6528/adf8f5","DOIUrl":"10.1088/1361-6528/adf8f5","url":null,"abstract":"Extreme ultraviolet lithography is used to mass-produce nanoscale integrated circuits, and high-numerical-aperture systems for 3 nm technology nodes are currently being developed. However, conventional tantalum-based EUV masks face limitations in terms of resolving fine patterns. This study introduces platinum-tungsten alloys as alternative absorber materials that are advantageous from both imaging performance and manufacturability perspectives. Although Pt offers excellent optical properties, including high EUV absorption and phase-shifting capabilities owing to its high extinction coefficient and low refractive index, its poor etchability limits its direct applicability. To overcome this limitation, we alloyed platinum with tungsten, which readily forms highly volatile reaction products with fluorine-based etching gases. The inclusion of W enhanced the etchability of Pt without degrading its optical benefits. Simulations revealed that Pt-W alloys not only improve imaging performance and mitigate mask 3D effects compared to conventional absorbers but also require lower exposure doses than pure Pt. Furthermore, we showed that increasing the W content enhances the etching rate and results in more-vertical sidewall profiles devoid of etch residue. These results demonstrate that Pt-W alloys are promising candidates for next-generation EUV mask absorbers.","PeriodicalId":19035,"journal":{"name":"Nanotechnology","volume":" ","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144799731","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Advances and future perspectives in hydrogel-based sensing technologies: a comprehensive review. 基于水凝胶的传感技术的进展和未来展望：综述。

IF 2.8 4区材料科学

Nanotechnology Pub Date : 2025-08-21 DOI: 10.1088/1361-6528/adf8f3

Meiling Qi, Yuhang Han, Wanyi Zhang, Yande Liu, Dawei Jiang, Zijian Wu, Miaojun Xu, Jiayu Fu, Bin Li

{"title":"Advances and future perspectives in hydrogel-based sensing technologies: a comprehensive review.","authors":"Meiling Qi, Yuhang Han, Wanyi Zhang, Yande Liu, Dawei Jiang, Zijian Wu, Miaojun Xu, Jiayu Fu, Bin Li","doi":"10.1088/1361-6528/adf8f3","DOIUrl":"10.1088/1361-6528/adf8f3","url":null,"abstract":"Hydrogels, with their high water content, biocompatibility, and responsiveness to environmental stimuli, have gained significant attention as promising materials in sensor technology. Hydrogel-based sensors are increasingly utilized in environmental monitoring, healthcare diagnostics, and wearable devices. This review comprehensively synthesizes recent advancements in conductive hydrogel sensors, addressing a critical literature gap by integrating material design, functionalization, and deployment in multifunctional platforms, unlike prior reviews that focus narrowly on specific hydrogel types or applications. Key findings include the development of highly stretchable and conductive hydrogels through conductive polymers, carbon nanofillers, and ionic conduction, enabling precise human motion detection and innovative cancer monitoring via non-invasive sweat analysis and intraoperative tumor tracking, and sensitive UV monitoring through colorimetric and photoelectrochromic mechanisms for skin health and environmental applications. The review critically evaluates challenges, such as mechanical fragility limiting durability in load-bearing applications, inconsistent sensitivity/specificity, and long-term stability issues. Emerging directions, including 'smart' hydrogels responsive to multiple stimuli and their integration with bioelectronics for real-time physiological monitoring, and advanced UV sensors for wearable and environmental monitoring, are explored. By offering a robust framework for researchers and engineers, this review aims to accelerate the development of versatile, durable hydrogel sensors, enhancing their impact in personalized healthcare, environmental sensing, and soft robotics.","PeriodicalId":19035,"journal":{"name":"Nanotechnology","volume":" ","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144799729","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

A review of nanoparticles in bioinks. 纳米颗粒在生物墨水中的研究进展。

IF 2.8 4区材料科学

Nanotechnology Pub Date : 2025-08-21 DOI: 10.1088/1361-6528/adf859

Ilyas Inci, Ece Eksin, Melda Buyukoz, Mehmet Yilmaz

{"title":"A review of nanoparticles in bioinks.","authors":"Ilyas Inci, Ece Eksin, Melda Buyukoz, Mehmet Yilmaz","doi":"10.1088/1361-6528/adf859","DOIUrl":"10.1088/1361-6528/adf859","url":null,"abstract":"A nanoparticle is commonly referred as a particle with a diameter between one to one hundred nanometers (nm). Nanoparticles are classified into 3 main groups based on their composition which are organic (polymeric nanoparticles, micelles, dendrimers, liposomes), inorganic (metal-based, metal oxide-based, ceramic-based, quantum dots (QDs)), and carbon-based nanoparticles (graphene/graphene oxide, carbon nanofibers, carbon nanotubes). There have been numerous studies that used nanoparticles in bioinks to prepare tissues and organs for instance cartilage, bone, osteochondral, vascular, skin, muscle, nerve, liver and tendon. Incorporation of nanoparticles in bioinks possess many advantages such as improving mechanical and rheological properties of bioinks, enhancing biological features of bioinks through functionalization of nanoparticles, using as effective drug delivery agents, monitoring tissue regeneration, and increasing cell attachment and proliferation. Although, many promising results obtained from previous studies, still there are several drawbacks about using nanoparticles in bioinks for example accumulation of non-biodegradable nanoparticles could cause blockage in capillaries and then possibly it could prevent blood flow and eventually could cause cellular death. Another limitation of using some specific nanoparticles (e.g. silver nanoparticles (AgNPs), iron oxide-based nanoparticles, cadmium-based QDs) could be the cytotoxic effects of these nanomaterials or released ions from these nanoparticles on cells. Invention of more biocompatible nanoparticles in the near future could increase the applications of these materials in bioprinting studies. This review provides detailed information and analysis regarding the up-to-date overview on applications of nanoparticles in the structure of bioinks in bioprinting.","PeriodicalId":19035,"journal":{"name":"Nanotechnology","volume":" ","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144794920","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Polyaniline induced nano-carbon with multi-doped heteroatoms for high-rate lithium ion battery anodes. 多掺杂杂原子聚苯胺诱导纳米碳用于高倍率锂离子电池阳极。

IF 2.8 4区材料科学

Nanotechnology Pub Date : 2025-08-21 DOI: 10.1088/1361-6528/adfded

Jiaqi Liu, Le Jiang, Hanfeng Wu, Shuo Dong, Yanyang Jin, Yongjun Yuan, Wangfeng Bai, Xiaowei Shi, Shiting Wu

{"title":"Polyaniline induced nano-carbon with multi-doped heteroatoms for high-rate lithium ion battery anodes.","authors":"Jiaqi Liu, Le Jiang, Hanfeng Wu, Shuo Dong, Yanyang Jin, Yongjun Yuan, Wangfeng Bai, Xiaowei Shi, Shiting Wu","doi":"10.1088/1361-6528/adfded","DOIUrl":"https://doi.org/10.1088/1361-6528/adfded","url":null,"abstract":"Nanostructure design, construction of porous architecture and heteroatom doping are three feasible strategies for advanced lithium ion batteries (LIBs) based on carbon anodes. Here, a unique polyaniline (PANI) @carbon@PANI sandwiched structure has been constructed via simultaneously PANI loading on both the inner and outer surfaces of ultra-wide graphitic carbon nanotubes. The morphology and thickness of PANI coating could be regulated by polymerizing agent of aniline and surface ethanol modification, and N, O and P heteroatoms are efficiently doped in the carbon lattice as extra Li+reservoirs through thermal annealing. Particularly, pyrrolic nitrogen and pyridinic nitrogen dopants could result in high-activity sites conducive to Li+adsorption, and reduce the diffusion barrier of Li+. Therefore, when the multi-doped nano-carbon is utilized as anodes for LIBs, PCPm-excess-600 with expanded interlayer spacing (0.425 nm) could exhibit a specific cycling capacity up to 944.44 mAh/g. And the high doping level of active pyridinic nitrogen contributes a large number of Li+adsorption sites to PCPm-600 with multi-level pore structures, and the resulting surface pseudo-capacitance greatly improves its rate capability. After 5000 reversible cycles under a ultra-large rate of 2000 mA/g, its specific capacity is as high as 388.57 mAh/g with capacity retention over 80%, and finally a high-capacity and fast-charging anode material with extremely long service life is obtained, providing new thoughts for the design and synthesis of carbon anodes.","PeriodicalId":19035,"journal":{"name":"Nanotechnology","volume":" ","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144961888","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Ultrafast carrier dynamics of mono- and few-layer WS₂through NaCl assisted chemical vapor deposition growth. 通过NaCl辅助化学气相沉积生长的单层和多层WS2的超快载流子动力学。

IF 2.8 4区材料科学

Nanotechnology Pub Date : 2025-08-20 DOI: 10.1088/1361-6528/adf8f4

Yagya Bahadur Woli, Himal Pokhrel, Qianshi Fu, Bryson Krause, Shawn David Pollard, Thang Ba Hoang

{"title":"Ultrafast carrier dynamics of mono- and few-layer WS2through NaCl assisted chemical vapor deposition growth.","authors":"Yagya Bahadur Woli, Himal Pokhrel, Qianshi Fu, Bryson Krause, Shawn David Pollard, Thang Ba Hoang","doi":"10.1088/1361-6528/adf8f4","DOIUrl":"10.1088/1361-6528/adf8f4","url":null,"abstract":"NaCl has widely been used as a seeding promoter for chemical vapor deposition of large-scale 2D transition metal dichalcogenides. In this work, we report a study of the influence of NaCl on the growth and optical properties of layered CVD-grown WS2using steady-state and time-resolved Kerr rotation measurements at room temperature. Strong photoluminescence (PL) signals from single flakes grown with a low NaCl content indicates direct band-gap emission, whereas flakes grown with higher amounts of NaCl exhibit red-shifted, weaker PL. Raman measurements from single flakes also indicate that WS2grown with higher NaCl amounts result in multilayered structures, while lower NaCl quantities yield monolayer WS2. Ultrafast carrier decay measurements from single flakes also indicate a NaCl-dependent on the valley exchange interaction component (<10 ps) and slower decay components (>50 ps), attributed to a combination of phenomena, such as the band gap transitioning from direct to indirect and defect-related localized states. Our study provides insight into the influence of seeding promoters in layered CVD-grown WS2in particular and 2D transition metal dichalcogenides in general.","PeriodicalId":19035,"journal":{"name":"Nanotechnology","volume":" ","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144799732","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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