检索结果-内蒙古大学图书馆

All-optical logic devices based on black arsenic-phosphorus with strong nonlinear optical response and high stability

引用

Opto-Electronic Advances 2022年第1期5卷 13-23页

作者： Leiming Wu Taojian Fan Songrui Wei Yijun Xu Ye Zhang Dingtao Ma Yiqing Shu Yuanjiang Xiang Jun Liu Jianqing Li Krassimir Panajotov Yuwen Qin Han Zhang Institute of Microscale Optoelectronics Collaborative Innovation Centre for Optoelectronic Science&TechnologyKey Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong ProvinceShenzhen Key Laboratory of Micro-Nano Photonic Information TechnologyGuangdong Laboratory of Artificial Intelligence and Digital Economy(SZ)Shenzhen UniversityShenzhen 518060China Faculty of Information Technology Macao University of Science and TechnologyMacao 519020China Department of Applied Physics and Photonics(IR-TONA) Vrije Universiteit BrusselsPleinlaan 2B-1050 BrusselsBelgium Institute of Advanced Photonics Technology School of Information EngineeringGuangdong University of TechnologyGuangzhou 510006China

The Kerr nonlinearity in two-dimensional(2D)nanomaterials is emerging as an appealing and intriguing research area due to their prominent light processing,modulation,and manipulation *** this contribution,2D black arsenic-phosphorus(B-AsP)nanosheets(NSs)were applied in nonlinear photonic devices based on spatial self-phase modula-tion(SSPM)*** applying the Kerr nonlinearity in 2D B-AsP,an all-optical phase-modulated system is proposed to realize the functions of“on”and“off”in all-optical *** using the same all-optical phase-modulated system,another optical logic gate is proposed,and the logical“or”function is obtained based on the 2D B-AsP NSs ***,by using the SSPM method,a 2D B-AsP/SnS_(2) hybrid structure is fabricated,and the result illustrates that the hybrid structure possesses the ability of the unidirectional nonlinear excitation,which helps in obtaining the function of spatial asymmetric light *** function is considered an important prerequisite for the realization of diode functionalization,which is believed to be a factor in important basis for the design of isolators as *** initial investig-ations indicate that 2D B-AsP is applicable for designing optical logical devices,which can be considered as an import-ant development in all-optical information processing.

关键词： B-AsP nanomaterial all-optical phase-modulated system spatial asymmetric light propagation

来源：评论

学校读者我要写书评

暂无评论

Engineering single atomic ruthenium on defective nickel vanadium layered double hydroxide for highly efficient hydrogen evolution

引用

Nano Research 2023年第4期16卷 4612-4619页

作者： Xiaoyu Chen Jiawei Wan Meng Zheng Jin Wang Qinghua Zhang Lin Gu Lirong Zheng Xianzhu Fu Ranbo Yu College of Materials Science and Engineering Shenzhen UniversityShenzhen 518071China College of Physics and Optoelectronic Engineering Shenzhen UniversityShenzhen 518060China Department of Physical Chemistry School of Metallurgical and Ecological EngineeringUniversity of Science and Technology Beijing InstitutionBeijing 100083China State Key Laboratory of Biochemical Engineering Institute of Process EngineeringChinese Academy of SciencesBeijing 100190China Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190China Beijing National Center for Electron Microscopy and Laboratory of Advanced Materials Department of Materials Science and EngineeringTsinghua UniversityBeijing 100084China Beijing Synchrotron Radiation Facility Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China Key Laboratory of Advanced Material Processing&Mold Ministry of EducationZhengzhou UniversityZhengzhou 450002China

Fabricating single-atom catalysts(SACs)with high catalytic activity as well as great stability is a big ***,we propose a precise synthesis strategy to stabilize single atomic ruthenium through regulating vanadium defects of nickel vanadium layered double hydroxides(NiV-LDH)ultrathin nanoribbons ***,the isolated atomically Ru doped NiV-LDH ultrathin nanoribbons(NiVRu-R)were successfully fabricated with a super-high Ru load of 12.8 wt.%.X-ray absorption spectrum(XAS)characterization further confirmed atomic dispersion of *** catalysts for electrocatalytic hydrogen evolution reaction(HER)in alkaline media,the NiVRu-R demonstrated superior catalytic properties to the commercial Pt/***,it maintained exceptional stability even after 5,000 cyclic voltammetry ***-situ XAS and density functional theory(DFT)calculations prove that the Ru atomic sites are stabilized on supports through forming the Ru-O-V structure,which also help promote the catalytic properties through reducing the energy barrier on atomic Ru catalytic sites.

关键词： hydrogen evolution reaction layered double hydroxide ruthenium atomic site ultrathin nanoribbons

来源：评论

学校读者我要写书评

暂无评论

Synthesis, rietveld refinement, and microstructural characterization of bulk zinc gallium telluride

引用

Interactions 2024年第1期245卷 1-21页

作者： Dhruv, S.D. Kolte, Jayant Solanki, Pankaj Solanki, Vanaraj Markna, J.H. Kataria, Bharat Amin, B.A. Agrawal, Naveen Dhruv, D.K. Natubhai V. Patel College of Pure and Applied Sciences The Charutar Vidya Mandal University Vallabh Vidyanagar Gujarat Anand388120 India School of Physics and Materials Science Thapar Institute of Engineering and Technology Patiala Punjab147004 India Department of Nanoscience and Advanced Materials Saurashtra University Gujarat Rajkot360005 India Dr. K.C. Patel R & amp D Centre Charotar University of Science and Technology Gujarat Changa388421 India College of Agricultural Engineering and Technology Anand Agricultural University Godhra Gujarat Panchmahal389001 India

After thoroughly evaluating its properties, the suggested semiconducting material for a thin film semiconductor electronic device is selected. A thorough analysis of Zinc gallium telluride (ZnGa2Te4) in bulk can be helpful for researchers working on electronic device production. ZnGa2Te4 (ZGT) is a ternary semiconducting compound that belongs to the II-III2-VI4 family [II: zinc (Zn), cadmium (Cd);III: indium (In), gallium (Ga);and III: selenium (Se), tellurium (Te), sulphur (S)]. The microcontroller-based programmable rotary tube furnace synthesized homogeneous bulk ZGT ternary semiconducting compound. A vigorous XRD peak intensity and a low full breadth/width at half maximum (β) (FWHM) of the diffraction peak value in the synthesized ZGT bulk indicate high levels of crystallinity, which were examined using X-ray diffraction (XRD). The ZGT bulk's d-interplanar spacings (as determined by Bragg's law and Bravais theory), stacking fault (SF), texture coefficient (Ci), degree of preferred orientation (σ), lattice constants (a and c), and unit cell volume (V) have all been computed. To understand the thermal and structural characteristics of ZGT, the XRD data is analyzed using the Rietveld refinement (RR) method in the Fullprof programme. Various microstructural parameters of ZGT bulk, such as lattice parameters (a and c), crystallite size (D), strain (Ε), microstrain (Εrms), dislocation density (δ), Young's modulus (yh k l), stress (σ), and energy density (u) are calculated. Calculations have been made for the bulk, Voigt shear, Young's modulus, and Poisson's ratio elastic moduli of ZGT. Equipped with its transverse and longitudinal sound velocities, the ZGT bulk's Debye temperature has been calculated and depicted. The ZGT's bulk density is calculated using a pycnometer. The implications are discussed. © The Author(s), under exclusive licence to Springer Nature Switzerland AG 2024.

关键词： X ray diffraction

来源：评论

学校读者我要写书评

暂无评论

Polarization-controlled dual resonant lattice Kerker effects

引用

Nano Research 2023年第2期16卷 3195-3200页

作者： Lei Xiong Xueqian Zhao Xiang Du Shuai Chen Yuanfu Lu Hongwei Ding Guangyuan Li School of Information Science and Engineering Yunnan UniversityKunming 650500China CAS Key Laboratory of Human-Machine Intelligence-Synergy Systems Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen 518055China School of Computer Electronic and InformationGuangxi UniversityNanning 530004China College of Physics and Electronic Technology Anhui Normal UniversityWuhu 241000China Tianjin H-Chip Technology Group Corporation Tianjin 300467China SIAT Branch Shenzhen Institute of Artificial Intelligence and Robotics for SocietyShenzhen 518055China

The generalized Kerker effects have attracted increasing interests in recent years due to their abilities to manipulate the far-field properties of ***,the dual-polarized generalized Kerker effect enabling different tailoring of orthogonally-polarized electromagnetic waves has not yet been ***,we demonstrate polarization-controlled dual resonant lattice Kerker effects in periodic silicon *** varying the incident angle,the electric dipole and magnetic dipole surface lattice resonances can spectrally overlap,causing zero reflectance and unitary transmittance,i.e.,the resonant lattice Kerker *** incident angle for achieving this effect can be tuned differently for s-and p-polarizations over large regions by varying the nanodisk size or the lattice *** proposed dual-polarized resonant lattice Kerker effects open up avenues for polarization-controlled manipulation of the phase and wavefront of light with metasurfaces.

关键词： Kerker effect surface lattice resonances dual-polarized silicon metasurface

来源：评论

学校读者我要写书评

暂无评论

Zr_(2)SeB and Hf_(2)SeB:Two new MAB phase compounds with the Cr_(2)AlC-type MAX phase(211 phase)crystal structures

引用

Journal of advanced Ceramics 2022年第11期11卷 1764-1776页

作者： Qiqiang ZHANG Yanchun ZHOU Xingyuan SAN Wenbo LI Yiwang BAO Qingguo FENG Salvatore GRASSO Chunfeng HU Key Laboratory of Advanced Technologies of Materials Ministry of EducationSchool of Materials Science and EngineeringSouthwest Jiaotong UniversityChengdu 610031China Science and Technology on Advanced Functional Composite Laboratory Aerospace Research Institute of Materials&Processing TechnologyBeijing 100076China Hebei Key Lab of Optic–Electronic Information and Materials College of Physics Science and TechnologyHebei UniversityBaoding 071002China State Key Laboratory of Green Building Materials China Building Materials AcademyBeijing 100024China

The ternary or quaternary layered compounds called MAB phases are frequently mentioned recently together with the well-known MAX ***,MAB phases are generally referred to layered transition metal borides,while MAX phases are layered transition metal carbides and nitrides with different types of crystal structure although they share the common nano-laminated structure *** order to prove that MAB phases can share the same type of crystal structure with MAX phases and extend the composition window of MAX phases from carbides and nitrides to borides,two new MAB phase compounds Zr_(2)SeB and Hf_(2)SeB with the Cr_(2)AlC-type MAX phase(211 phase)crystal structure were discovered by a combination of first-principles calculations and experimental verification in this ***-principles calculations predicted the stability and lattice parameters of the two new MAB phase compounds Zr_(2)SeB and Hf_(2)*** they were successfully synthesized by using a thermal explosion method in a spark plasma sintering(SPS)*** crystal structures of Zr_(2)SeB and Hf_(2)SeB were determined by a combination of the X-ray diffraction(XRD),scanning electron microscopy(SEM),and high-resolution transmission electron microscopy(HRTEM).The lattice parameters of Zr_(2)SeB and Hf_(2)SeB are a=3.64398Å,c=12.63223Åand a=3.52280Å,c=12.47804Å,*** the atomic positions are M at 4f(1/3,2/3,0.60288[Zr]or 0.59889[Hf]),Se at 2c(1/3,2/3,1/4),and B at 2a(0,0,0).And the atomic stacking sequences follow those of the Cr_(2)AlC-type MAX *** work opens up the composition window for the MAB phases and MAX phases and will trigger the interests of material scientists and physicists to explore new compounds and properties in this new family of materials.

关键词： Zr_(2)SeB and Hf_(2)SeB MAB phase MAX phase first-principles calculations thermal explosion synthesis

来源：评论

学校读者我要写书评

暂无评论

High Sensitivity Submicron Scale Temperature Sensor Based on Perovskite Nanoplatelet Lasers

引用

发光学报 2024年第9期45卷 1511-1520页

作者： ZHAO Ruofan TAO Jianxun XI Yuying CHEN Jiangzhao JI Ting WANG Wenyan WEN Rong CUI Yanxia CHEN Junsheng LI Guohui College of Electronic Information and Optoelectronic Engineering Taiyuan University of TechnologyTaiyuan 030024China School of Materials Science and Engineering Kunming University of Science and TechnologyKunming 650093China Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering Taiyuan 030024China Nano-Science Center&Department of Chemistry University of CopenhagenCopenhagen DK-2100Denmark

Submicron scale temperature sensors are crucial for a range of applications,particularly in micro and na-noscale *** promising solution involves the use of active whispering gallery mode(WGM)*** resonators can be remotely excited and read out using free-space structures,simplifying the process of *** this study,we present a submicron-scale temperature sensor with a remarkable sensitivity up to 185 pm/℃based on a trian-gular MAPbI3 nanoplatelet(NPL)***,as temperature changes,the peak wavelength of the laser line shifts *** unique characteristic allows for precise temperature sensing by tracking the peak wavelength of the NPL *** optical modes are confined within the perovskite NPL,which measures just 85 nm in height,due to total internal *** NPL laser boasts several key features,including a high Q of~2610 and a low laser threshold of about 19.8μJ·cm^(−2).The combination of exceptional sensitivity and ultra-small size makes our WGM device an ideal candidate for integration into systems that demand compact temperature *** advancement paves the way for significant prog-ress in the development of ultrasmall temperature sensors,opening new possibilities across various fields.

关键词： temperature sensor submicron scale perovskite nanoplatelet

来源：评论

学校读者我要写书评

暂无评论

Multi-class detection of cherry tomatoes using improved YOLOv4-Tiny

引用

International Journal of Agricultural and Biological Engineering 2023年第2期16卷 225-231页

作者： Fu Zhang Zijun Chen Shaukat Ali Ning Yang Sanling Fu Yakun Zhang College of Agricultural Equipment Engineering Henan University of Science and TechnologyLuoyang 471023HenanChina Collaborative Innovation Center of Machinery Equipment Advanced Manufacturing of Henan Province Luoyang 471023HenanChina Wah Engineering College University of WahWah Cantt 47040Pakistan School of Electrical and Information Engineering Jiangsu UniversityZhenjiang 212013JiangsuChina College of Physics Engineering Henan University of Science and TechnologyLuoyang 471023HenanChina

The rapid and accurate detection of cherry tomatoes is of great significance to realizing automatic picking by ***,so far,cherry tomatoes are detected as only one class for *** occluded by branches or leaves are detected as pickable objects,which may cause damage to the plant or robot end-effector during *** study proposed the Feature Enhancement Network Block(FENB)based on YOLOv4-Tiny to solve the above ***,according to the distribution characteristics and picking strategies of cherry tomatoes,cherry tomatoes were divided into four classes in the nighttime,and daytime included not occluded,occluded by branches,occluded by fruits,and occluded by ***,the CSPNet structure with the hybrid attention mechanism was used to design the FENB,which pays more attention to the effective features of different classes of cherry tomatoes while retaining the original ***,the Feature Enhancement Network(FEN)was constructed based on the FENB to enhance the feature extraction ability and improve the detection accuracy of *** experimental results show that under the confidence of 0.5,average precision(AP)of non-occluded,branch-occluded,fruit-occluded,and leaf-occluded fruit over the day test images were 95.86%,92.59%,89.66%,and 84.99%,respectively,which were 98.43%,95.62%,95.50%,and 89.33% on the night test images,*** mean Average Precision(mAP)of four classes over the night test set was higher(94.72%)than that of the day(90.78%),which were both better than YOLOv4 and *** cost 32.22 ms to process a 416×416 image on the *** model size was 39.34 ***,the proposed model can provide a practical and feasible method for the multi-class detection of cherry tomatoes.

关键词： cherry tomatoes deep learning data augmentation YOLOv4 occlusion multi-class detection

来源：评论

学校读者我要写书评

暂无评论

Selective CO_(2)Electroreduction to Multi-Carbon Products on Organic-Functionalized CuO Nanoparticles by Local Micro-Environment Modulation

引用

Nano-Micro Letters 2024年第12期16卷 120-132页

作者： Shan Ren Xi Cao Qikui Fan Zhimao Yang Fei Wang Xin Wang Licheng Bai Jian Yang Materials Interfaces Center Shenzhen Institutes of Advanced TechnologyChinese Academy of SciencesShenzhen 518055GuangdongPeople’s Republic of China Key Laboratory of Functional Molecular Solids Ministry of EducationCollege of Chemistry and Materials ScienceAnhui Normal UniversityWuhu 241002AnhuiPeople’s Republic of China School of Physics Xi’an Jiaotong UniversityXi’an 710049ShaanxiPeople’s Republic of China College of Materials Science and Engineering Shenzhen UniversityShenzhen 518071GuangdongPeople’s Republic of China

Surface functionalization of Cu-based catalysts has demonstrated promising potential for enhancing the electrochemical CO_(2)reduction reaction(CO_(2)RR)toward multi-carbon(C2+)products,primarily by suppressing the parasitic hydrogen evolution reaction and facilitating a localized CO_(2)/CO concentration at the *** upon this approach,we developed surface-functionalized catalysts with exceptional activity and selectivity for electrocatalytic CO_(2)RR to C_(2+)in a neutral *** CuO nanoparticles coated with hexaethynylbenzene organic molecules(HEB-CuO NPs),a remarkable C_(2+)Faradaic efficiency of nearly 90%was achieved at an unprecedented current density of 300 mA cm^(-2),and a high FE(>80%)was maintained at a wide range of current densities(100-600 mA cm^(-2))in neutral environments using a flow ***,in a membrane electrode assembly(MEA)electrolyzer,86.14%FEC2+was achieved at a partial current density of 387.6 mA cm^(-2)while maintaining continuous operation for over 50 h at a current density of 200 mA cm^(-2).In-situ spectroscopy studies and molecular dynamics simulations reveal that reducing the coverage of coordinated K⋅H2O water increased the probability of intermediate reactants(CO)interacting with the surface,thereby promoting efficient C-C coupling and enhancing the yield of C_(2+)*** advancement offers significant potential for optimizing local micro-environments for sustainable and highly efficient C_(2+)production.

关键词： CO_(2)electroreduction to C_(2+) Neutral electrolyte Organic-functionalized CuO nanoparticles Local micro-environment

来源：评论

学校读者我要写书评

暂无评论

Emerging material platforms for integrated microcavity photonics

引用

science China(physics,Mechanics & Astronomy) 2022年第10期65卷 10-28页

作者： Jin Liu Fang Bo Lin Chang Chun-Hua Dong Xin Ou Blake Regan Xiaoqin Shen Qinghai Song Baicheng Yao Wenfu Zhang Chang-Ling Zou Yun-Feng Xiao State Key Laboratory of Optoelectronic Materials and Technologies School of PhysicsSun Yat-sen UniversityGuangzhou 510000China MOE Key Laboratory of Weak-Light Nonlinear Photonics TEDA Institute of Applied Physics and School of PhysicsNankai UniversityTianjin 300071China State Key Laboratory of Advanced Optical Communications System and Networks School of ElectronicsPeking UniversityBeijing 100871China CAS Key Lab of Quantum Information University of Science and Technology of ChinaHefei 230026China State Key Laboratory of Functional Material for Informatics Shanghai Institute of Microsystem and Information TechnologyChinese Academy of SciencesShanghai 200050China School of Mathematical and Physical Sciences University of Technology SydneyUltimo 2007Australia School of Physical Science and Technology ShanghaiTech UniversityShanghai 201210China Ministry of Industry and Information Technology Key Lab of Micro-Nano Optoelectronic Information System Harbin Institute of TechnologyShenzhen 518055China Key Laboratory of Optical Fiber Sensing and Communications(Ministry of Education) University of Electronic Science and Technology of ChinaChengdu 611731China State Key Laboratory of Transient Optics and Photonics Xi’an Institute of Optics and Precision MechanicsChinese Academy of SciencesXi’an 710119China State Key Laboratory for Mesoscopic Physics and Frontiers Science Center for Nano-optoelectronics School of PhysicsPeking UniversityBeijing 100871China

Many breakthroughs in technologies are closely associated with the deep understanding and development of new material *** the main material used in microelectronics,Si also plays a leading role in the development of integrated *** indirect bandgap,absence ofχ(2)nonlinearity and the parasitic nonlinear absorptions at the telecom band of Si imposed technological bottlenecks for further improving the performances and expanding the functionalities of Si microcavities in which the circulating light intensity is dramatically *** past two decades have witnessed the burgeoning of the novel material platforms that are compatible with the complementary metal-oxide-semiconductor(COMS)*** particular,the unprecedented optical properties of the emerging materials in the thin film form have resulted in revolutionary progress in microcavity *** this review article,we summarize the recently developed material platforms for integrated photonics with the focus on chip-scale microcavity *** material characteristics,fabrication processes and device applications have been thoroughly discussed for the most widely used new material *** also discuss open challenges and opportunities in microcavity photonics,such as heterogeneous integrated devices,and provide an outlook for the future development of integrated microcavities.

关键词： microcavity integrated optics nonlinear optics

来源：评论

学校读者我要写书评

暂无评论

Essentially degenerate hidden nodal lines in two-dimensional magnetic layer groups

引用

Physical Review B 2024年第23期110卷 235163-235163页

作者： Xiao-Ping Li Chaoxi Cui Lei Wang Weikang Wu Zeying Zhang Zhi-Ming Yu Yugui Yao School of Physical Science and Technology Inner Mongolia University Hohhot 010021 China Centre for Quantum Physics Key Laboratory of Advanced Optoelectronic Quantum Architecture and Measurement (MOE) School of Physics Beijing Institute of Technology Beijing 100081 China Beijing Key Lab of Nanophotonics & Ultrafine Optoelectronic Systems School of Physics Beijing Institute of Technology Beijing 100081 China Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials Ministry of Education Shandong University Jinan 250061 China College of Mathematics and Physics Beijing University of Chemical Technology Beijing 100029 China

According to the theory of group representations, the types of band degeneracy can be divided into accidental degeneracy and essential degeneracy. The essentially degenerate nodal lines (NLs) are typically resided on the high-symmetry lines of the Brillouin zone. Here, we propose a type of NL in two dimensions that is essentially degenerate but is hidden within the high-symmetry planes, making it less observable, dubbed a hidden-essential nodal line (HENL). The existence of HENL is guaranteed as long as the system hosts a horizontal glide-mirror symmetry, hence such NLs can be widely found in both nonmagnetic and magnetic systems. We perform an exhaustive search over all 528 magnetic layer groups (MLGs) for HENL that can be enforced by glide-mirror symmetry with both spinless and spinfull systems. We find that 122 candidate MLGs host spinless HENL, while 63 candidate MLGs demonstrate spinful HENL. In addition, we reveal that horizontal mirror and time-reversal symmetry in type-II and type-IV MLGs with spin-orbital coupling can enforce HENL formed. The 15 corresponding candidate MLGs have also been presented. Furthermore, we derive a few typical lattice models to characterize the existence for the HENL. For specific electronic fillings in real materials, namely 4N+2 in spinless systems (and 2N+1 in spinful systems), the presence of the HENLs in candidate MLGs is required regardless of the details of the systems. Using ab initio calculations, we further identify possible material candidates that realize spinless and spinful HENL. Moreover, spinful HENLs exhibit a persistent spin texture with the characteristic of momentum-independent spin configuration. Our findings uncover a type of topological semimetal state and offer an ideal platform to study the related physics of HENLs.

关键词： Mirrors

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：