Nanotechnology最新文献

Unveiling the anharmonic reign: a unified framework for charge density wave transitions in monolayer H-MX₂ (M=Nb,Ta; X=S,Se). 揭示非调和统治：单层H-MX 2 （M=Nb,Ta； X=S,Se）中电荷密度波跃迁的统一框架。

IF 2.8 4区材料科学

Nanotechnology Pub Date : 2026-05-08 DOI: 10.1088/1361-6528/ae6aa4

Wenjun Zhang, Jiansheng Wu

引用次数: 0

Nanocorrugation-enabled strong exciton-polariton coupling in MoS₂dielectric cavities. 二硫化钼介电腔中纳米微缩致强激子-极化子耦合。

IF 2.8 4区材料科学

Nanotechnology Pub Date : 2026-05-08 DOI: 10.1088/1361-6528/ae6aa5

Vahid Faramarzi, Michael Taeyoung Hwang

{"title":"Nanocorrugation-enabled strong exciton-polariton coupling in MoS2dielectric cavities.","authors":"Vahid Faramarzi, Michael Taeyoung Hwang","doi":"10.1088/1361-6528/ae6aa5","DOIUrl":"https://doi.org/10.1088/1361-6528/ae6aa5","url":null,"abstract":"This study investigated exciton-photon coupling in monolayer MoS2 integrated with a nanocorrugated SiN dielectric cavity, which supports tunable guided-mode resonances near a quasi-bound state in the continuum (q-BIC). The cavity exhibited a high quality-factor (Q-factor) of up to 6300 and near-field enhancement of approximately 2202. By engineering the SiN thickness and corrugation geometry, the cavity resonance was tuned across the MoS2 A-exciton, enabling a transition from weak-coupling regime to a pronounced polaritonic regime, as indicated by the emergence of two strong transmission dips. Full-wave finite-element simulations combined with Lorentz oscillator dispersion modeling revealed clear anti-crossing behavior and narrow spectral features with a high Q-factor of approximately 340. Depending on the corrugation amplitude, a Rabi splitting of approximately 27 meV was achieved in conjunction with high-Q polariton modes, confirming a strong coupling regime. Furthermore, the curvature-induced strain introduced an additional tuning mechanism by modulating the exciton energy and detuning, thereby enabling controllable polariton dispersion while maintaining robust coupling strength. Results revealed that a nanocorrugated dielectric cavity with a facile configuration can serve as a scalable platform for strong light-matter interactions in two-dimensional materials and for designing high-Q exciton-polaritonic quantum devices.","PeriodicalId":19035,"journal":{"name":"Nanotechnology","volume":" ","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147856834","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-fidelity transfer of epitaxial-grade crystalline Au microstructures for optoelectronic applications. 用于光电应用的外延级晶体金微结构的高保真转移。

IF 2.8 4区材料科学

Nanotechnology Pub Date : 2026-05-08 DOI: 10.1088/1361-6528/ae6aa2

Yalu Guan, Tianran Zhao, Lei Wang, Jie Lin, Peng Jin

{"title":"High-fidelity transfer of epitaxial-grade crystalline Au microstructures for optoelectronic applications.","authors":"Yalu Guan, Tianran Zhao, Lei Wang, Jie Lin, Peng Jin","doi":"10.1088/1361-6528/ae6aa2","DOIUrl":"https://doi.org/10.1088/1361-6528/ae6aa2","url":null,"abstract":"Metal microstructures are fundamental components in electronic and optoelectronic devices. However, traditional energetic ion bombardment deposition techniques often introduce interface defects, strain, disorder, diffusion, and thermal or chemical incompatibility-particularly when integrating metals with two-dimensional semiconductors or unconventional substrates. Consequently, transfer printing techniques have emerged as alternatives. Nevertheless, existing methods typically rely on polycrystalline metals with inferior optoelectronic properties, leading to high optical losses and contact resistance. Here, we present a method for the large-area transfer of electrodeposited, atomically smooth epitaxial gold (Epi-Au) microstructures, including arrays, grids, and dendritic structure films. This approach leverages ultrapure water to induce spontaneous delamination of intact Epi-Au microstructures. Optical and electrical characterizations of the transferred architectures confirm the process reliability. Notably, the transferred 25-nm-thick Epi-Au grid on glass delivers an average electromagnetic interference shielding efficiency of 30.9 dB across the Ku-band (12-18 GHz)-rivalling metals hundreds of nanometers thick-confirming the transferred Epi-Au grids exhibit excellent electrical conductivity. Furthermore, a transferred 6-nm-thick monolithic Epi-Au dendritic structure on a flexible PDMS substrate maintains structural integrity without branch loss and exhibits 70%-80% transmittance across the 400-900 nm wavelength range. These results validate the high fidelity of our transfer method and demonstrate the significant potential of high-quality Epi-Au microstructures for advanced optoelectronic applications.","PeriodicalId":19035,"journal":{"name":"Nanotechnology","volume":" ","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147856831","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

Performance and mechanism of porous nanospherical Cu₂O/CuO@NPC heterojunctions for photocatalytic RhB degradation. 多孔纳米球形Cu2O/CuO@NPC异质结光催化降解RhB的性能及机理

IF 2.8 4区材料科学

Nanotechnology Pub Date : 2026-05-08 DOI: 10.1088/1361-6528/ae6aa6

Erbao Lu, Chaoyang Wang, Fengda Pan, Yulong Lu, Man Li, Jun Zhou, Chunling Qin

{"title":"Performance and mechanism of porous nanospherical Cu2O/CuO@NPC heterojunctions for photocatalytic RhB degradation.","authors":"Erbao Lu, Chaoyang Wang, Fengda Pan, Yulong Lu, Man Li, Jun Zhou, Chunling Qin","doi":"10.1088/1361-6528/ae6aa6","DOIUrl":"https://doi.org/10.1088/1361-6528/ae6aa6","url":null,"abstract":"This work designs a hierarchical porous nanospherical Cu2O/CuO heterojunction catalyst in situ grown on the nanoporous copper (NPC) network via anodization, for efficient degradation of organic pollutants. The Cu2O/CuO@NPC catalyst concurrently achieve a self-standing, hierarchical porous structure as well as the construction of Cu2O/CuO heterojunction. Under visible light irradiation, the Cu2O/CuO@NPC catalyst exhibits an excellent degradation performance towards Rhodamine B (RhB), achieving complete pollutant removal within 12 minutes. Notably, benefiting from the self-standing structure and stable nanosphere morphology, it still retains 94.5% of its degradation efficiency even after 14 consecutive cycles, which is much superior to most reported Cu2O/CuO nanocatalysts. Most importantly, this work proposes the formation mechanism of the nanospheres and conducts an in-depth analysis of the photocatalytic degradation mechanism using electron paramagnetic resonance (EPR) measurements and density functional theory (DFT) calculations. This study provides both experimental and theoretical insights for designing efficient heterostructured photocatalysts, with promising application value in the field of environmental remediation.","PeriodicalId":19035,"journal":{"name":"Nanotechnology","volume":" ","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147856862","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

Application of Cu₂O modified α-Ga₂O₃ nanowire arrays in photoelectrochemical self-powered ultraviolet light detection. Cu₂O修饰α-Ga₂O₃纳米线阵列在光电化学自供电紫外光检测中的应用。

IF 2.8 4区材料科学

Nanotechnology Pub Date : 2026-05-08 DOI: 10.1088/1361-6528/ae6aa3

Jin Wang, Jiyuan Huang, Yan Gu, Ting Zhi, Junjun Xue

{"title":"Application of Cu₂O modified α-Ga₂O₃ nanowire arrays in photoelectrochemical self-powered ultraviolet light detection.","authors":"Jin Wang, Jiyuan Huang, Yan Gu, Ting Zhi, Junjun Xue","doi":"10.1088/1361-6528/ae6aa3","DOIUrl":"https://doi.org/10.1088/1361-6528/ae6aa3","url":null,"abstract":"Traditional photodetectors generally have the limitation of single-band detection, making it difficult to effectively distinguish multi-wavelength optical signals. In this study, by constructing a heterojunction structure of Cu₂O and α-Ga₂O₃, a photodetection device with wavelength resolution capability was innovatively fabricated. Through the synergistic effect of the built-in electric field of the p-n junction and the semiconductor/electrolyte junction, this detector exhibits unique dual-wavelength response characteristics under 0 V. It generates photocurrents in opposite directions for ultraviolet light at 255 nm and 365 nm, respectively. Experimental data shows that the responsivity of this device reaches 3.6 mA/W under 255 nm ultraviolet light and -0.15 mA/W at 365 nm. Based on this bidirectional current characteristic, a differential signal encryption communication system was further designed and simulated, effectively avoiding the problem of signal interference in traditional optical communication. The research indicates that photodetectors composed of materials with different band gaps provide an effective way to distinguish different illumination bands, and their bidirectional current characteristics show broad application prospects in the fields of optical communication and optoelectronic devices.","PeriodicalId":19035,"journal":{"name":"Nanotechnology","volume":" ","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147856909","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

Improved defect analysis based on atomic connectivity in polycrystalline materials. 基于多晶材料原子连通性的改进缺陷分析。

IF 2.8 4区材料科学

Nanotechnology Pub Date : 2026-05-08 DOI: 10.1088/1361-6528/ae645b

Younggak Shin, Vichhika Moul, Keonwook Kang, Byeongchan Lee

{"title":"Improved defect analysis based on atomic connectivity in polycrystalline materials.","authors":"Younggak Shin, Vichhika Moul, Keonwook Kang, Byeongchan Lee","doi":"10.1088/1361-6528/ae645b","DOIUrl":"10.1088/1361-6528/ae645b","url":null,"abstract":"Every physical system is designed on microstructure-property relationships of materials for optimal performance, but the performance inevitably declines due to material degradation. Understanding a long-term microstructural evolution is important to ensure safe operation, and understanding defect generation in high-temperature or high-energy applications is invaluable as the material degradation process is rapid and the consequences can be fatal. Nevertheless, reliable identification and classification of lattice defects in atomistic simulations for polycrystals remain a long-standing challenge. The fundamental problem with conventional methods, such as the Wigner-Seitz cell method, is that point defects are identified not by actual lattice points but by initial atomic positions. Consequently, the defect analysis from existing methods is valid only when the initial atomic arrangement is the perfect lattice structure. In this study, we introduce two new defect analysis techniques based on the local atomic connectivity to classify and quantify point defects. Both methods capture the correct defect-production trend in collision-cascade simulations that is otherwise not captured by the existing methods. These scalable approaches provide robust, accurate defect classification for polycrystalline materials, which are inherently defective.","PeriodicalId":19035,"journal":{"name":"Nanotechnology","volume":" ","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147776459","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

Understanding the volatile memristor via direct observation of surface diffusion-regulated Cu-based conductive filaments. 通过直接观察表面扩散调节的铜基导电丝来理解易失性忆阻器。

IF 2.8 4区材料科学

Nanotechnology Pub Date : 2026-05-07 DOI: 10.1088/1361-6528/ae645a

Bo Zhang, Guangyu Wen, Xu Zhao, Xinmou Ning, Gongjie Liu, Janicek Petr, Tomas Wagner

{"title":"Understanding the volatile memristor via direct observation of surface diffusion-regulated Cu-based conductive filaments.","authors":"Bo Zhang, Guangyu Wen, Xu Zhao, Xinmou Ning, Gongjie Liu, Janicek Petr, Tomas Wagner","doi":"10.1088/1361-6528/ae645a","DOIUrl":"10.1088/1361-6528/ae645a","url":null,"abstract":"This study develops a bioinspired bilayer volatile memristor with a W/SiO₂/Cux(SiO2)100-x/Cu structure. The morphology and crystalline structure of the conductive filaments were directly observed via cross-sectional transmission electron microscopy. Discrete spherical copper-based grains construct conductive filaments with large internal surfaces, some of which are distorted due to stress interactions with the silicon dioxide matrix. According to the results of x-ray photoelectron spectroscopy, the diffusion of copper and redox reactions (involving the valence state transitions of copper to zero valence, positive monovalence, and positive divalence) are the core mechanisms governing the dynamic evolution of conductive filaments. When the stimulus is subsequently removed, the minimization of the thermodynamic surface energy drives the transformation of nonspherical grains into stable spherical grains, leading to conductive filament rupture and spontaneous recovery of the device to the initial state. By regulating the parameters of pulse signals to achieve precise control over conductive filament dynamics, the device successfully reproduces the behavior of nociceptors. A high accuracy of 93.11% for the handwritten digit recognition task in neurocomputing is achieved, showing the multipurpose function of the memristor.","PeriodicalId":19035,"journal":{"name":"Nanotechnology","volume":" ","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147776817","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

CDs@ZIF-8 nanocomposite with built-in ratiometric signal for selective tetracycline detection. CDs@ZIF-8纳米复合材料内置比例信号选择性四环素检测。

IF 2.8 4区材料科学

Nanotechnology Pub Date : 2026-05-06 DOI: 10.1088/1361-6528/ae6921

Xixi Zhou, Chao Song, Shuhao Hu, Yutong Wu, Yanyue Jia, Zhao Jiang, Zhijuan Sun

{"title":"CDs@ZIF-8 nanocomposite with built-in ratiometric signal for selective tetracycline detection.","authors":"Xixi Zhou, Chao Song, Shuhao Hu, Yutong Wu, Yanyue Jia, Zhao Jiang, Zhijuan Sun","doi":"10.1088/1361-6528/ae6921","DOIUrl":"https://doi.org/10.1088/1361-6528/ae6921","url":null,"abstract":"Tetracycline (TC), a broad-spectrum antibiotic, poses serious ecological and health risks due to its environmental persistence, making it necessary to develop effective detection methods. Herein, a dual-emission ratiometric fluorescence sensor (CDs@ZIF-8) was developed via a one-pot in situ encapsulation of blue-emitting N,S-co-doped carbon dots (CDs) within the zeolitic imidazolate framework-8 (ZIF-8). The N,S co-doping strategy significantly elevates the fluorescence quantum yield and enriches surface active sites, ensuring a bright and stable reference emission. The characteristic blue emission of the embedded CDs at 430 nm is efficiently quenched via the inner filter effect (IFE) in the presence of TC, whereas a pronounced emission enhancement at 515 nm was induced by the coordination of TC with Zn2⁺ ions from the ZIF-8 framework, which restricts the intramolecular conformational rotation of TC. Consequently, a robust ratiometric response (I515/I430) was established for TC quantification, yielding a broad linear dynamic range (0-80 μM) and a low limit of detection (69 nM), Furthermore, exceptional selectivity, long-term stability, and reliable recyclability were systematically demonstrated by the developed sensor. Accurate quantification was further achieved in complex real-world matrices (lake water, honey, and milk), with relative standard deviations ranging from 1.09% to 4.51%. Moreover, a smartphone-based point-of-care testing platform was developed leveraging the distinct color transition from blue to yellow-green, showing great promise for on-site visual quantification. Collectively, this study provides a robust, rare-earth-free ratiometric sensing system with integrated dual-mode detection capability, demonstrating substantial potential for environmental monitoring and food safety assurance.","PeriodicalId":19035,"journal":{"name":"Nanotechnology","volume":" ","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147840318","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

Impact of surfactant characteristics and particle aspect ratios on the dried deposit patterns of gold nanofluid droplets. 表面活性剂特性和颗粒长径比对金纳米流体液滴干燥沉积模式的影响

IF 2.8 4区材料科学

Nanotechnology Pub Date : 2026-05-06 DOI: 10.1088/1361-6528/ae6920

Zaibudeen A W, Jasim Sk

{"title":"Impact of surfactant characteristics and particle aspect ratios on the dried deposit patterns of gold nanofluid droplets.","authors":"Zaibudeen A W, Jasim Sk","doi":"10.1088/1361-6528/ae6920","DOIUrl":"https://doi.org/10.1088/1361-6528/ae6920","url":null,"abstract":"The evaporation of a sessile colloidal suspension droplet on a substrate yields various drying-induced patterns, which are crucial for both technological advancements and fundamental understandings of colloidal droplet evaporation. Several factors influence the formation of various drying-induced patterns on the substrate. In this study, the variation in dried deposit patterns formed after complete evaporation of a gold nanorod (Au-NR) dispersion droplet is investigated by simultaneously varying the characteristics of the surfactant stabilizing the particles and the particle aspect ratio. Here, cetyltrimethylammonium bromide (CTAB) is used to prepare Au-NRs of aspect ratios 3.5 and lower, and the combination of CTAB and benzyl-dodecyldimethylammonium chloride (BDAC) is used to prepare Au-NRs of aspect ratios 5.4 and higher. As the Au-NR dispersion evaporates, coffee-stain patterns with distinct microstructures form. Changes in the characteristics of the surfactant stabilizing the Au-NR dispersion droplets influence their adsorption at the three interfaces during droplet drying and alter the depinning rate of the droplet during the initial stages of evaporation. This, in turn, affects the deposition of Au-NRs outside the coffee stain and the diameter of the coffee stain. Additionally, as the aspect ratios of the Au-NR in the droplet increase, the width of the outer coffee-stain edges and the extent of Au-NR self-assemblies within it significantly increase, as supported by interaction energy calculations. This study demonstrates that changing the surfactant type used to stabilize colloidal particles can significantly impact the drying kinetics and the resultant dried patterns of colloidal suspension droplets.","PeriodicalId":19035,"journal":{"name":"Nanotechnology","volume":" ","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147840289","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

Nanofiber-based protection of DNA for archival data storage via coaxial electrospinning and chitosan integration. 同轴静电纺丝和壳聚糖集成纳米纤维对档案数据存储DNA的保护。

IF 2.8 4区材料科学

Nanotechnology Pub Date : 2026-05-05 DOI: 10.1088/1361-6528/ae5dd6

Zuqi Liu, Zixiao Zhang, Fei Xu, Kuiting Chen, Linqiang Pan

{"title":"Nanofiber-based protection of DNA for archival data storage via coaxial electrospinning and chitosan integration.","authors":"Zuqi Liu, Zixiao Zhang, Fei Xu, Kuiting Chen, Linqiang Pan","doi":"10.1088/1361-6528/ae5dd6","DOIUrl":"10.1088/1361-6528/ae5dd6","url":null,"abstract":"DNA is an attractive molecular alternative for dense and durable information storage, which offers immense potential for long-term archival data storage. However, the unprotected DNA molecules may degrade when exposed to factors such as temperature variation, enzyme hydrolysis, and oxidative stress, which results in failure of data recovery. Here, we present a protection scheme that stabilizes DNA using chitosan and polyvinyl alcohol (PVA) nanofibers, enabling high-fidelity recovery after long-term storage. Chitosan was used to protect DNA backbone from temperature variations, and PVA nanofibers was used to encapsulate DNA to mitigate external damage such as strand breakage. Accelerated aging experiments showed that the combined chitosan/PVA protection increased the DNA half-life by nearly 30-fold relative to unprotected controls. Specifically, the protected 150-bp DNA exhibited a projected half-life of 97.8 years at 20 °C and 940.5 years at 10 °C. We further validated this approach by encoding textual data into the protected DNA. Sequencing results confirmed high-fidelity recovery of the encoded text. These results indicate that the proposed DNA protection approach provides a promising solution for long-term and reliable DNA storage.","PeriodicalId":19035,"journal":{"name":"Nanotechnology","volume":" ","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147654473","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