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Visualized SERS imaging of Single Molecule by Ag/ Black Phosphorus Nanosheets

Nano-Micro Letters 2022年第5期14卷 47-61页

作者： Chenglong Lin Shunshun Liang Yusi Peng Li Long Yanyan Li Zhengren Huang Nguyen Viet Long Xiaoying Luo Jianjun Liu Zhiyuan Li Yong Yang State key laboratory of High‑Performance Ceramics and Superfine Microstructures Shanghai Institute of CeramicsChinese Academy of Sciences1295 Dingxi RoadShanghai 200050People’s Republic of China Graduate School of the Chinese Academy of Sciences No.19(A)Yuquan RoadBeijing 100049People’s Republic of China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049People’s Republic of China State key laboratory of Oncogenes and Related Genes Shanghai Cancer InstituteRenji HospitalShanghai Jiaotong University School of Medicine200032 ShanghaiPeople’s Republic of China School of Physics and Optoelectronics South China University of TechnologyGuangzhou 510641People’s Republic of China Department of Electronics and Telecommunications Saigon UniversityHochiminh CityVietnam

Single-molecule detection and imaging are of great value in chemical analysis,biomarker identification and other trace detection ***,the localization and visualization of single molecule are still quite a ***,we report a special-engineered nanostructure of Ag nanoparticles embedded in multi-layer black phosphorus nanosheets(Ag/BP-NS)synthesized by a unique photoreduction method as a surfaceenhanced Raman scattering(SERS)*** a SERS substrate features the lowest detection limit of 10^(–20) mol L^(−1) for R6G,which is due to the three synergistic resonance enhancement of molecular resonance,photoinduced charge transfer resonance and electromagnetic *** propose a polarization-mapping strategy to realize the detection and visualization of single *** addition,combined with machine learning,Ag/BP-NS substrates are capable of recognition of different tumor exosomes,which is meaningful for monitoring and early warning of the *** work provides a reliable strategy for the detection of single molecule and a potential candidate for the practical bio-application of SERS technology.

关键词： Black phosphorus Single molecule SERS Exosome Machine learning

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High discrimination ratio,broadband circularly polarized light photodetector using dielectric achiral nanostructures

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Light(Science & Applications) 2024年第11期13卷 2802-2811页

作者： Guanyu Zhang Xiaying Lyu Yulu Qin Yaolong Li Zipu Fan Xianghan Meng Yuqing Cheng Zini Cao Yixuan Xu Dong Sun Yunan Gao Qihuang Gong Guowei Lyu State key laboratory for Mesoscopic Physics Collaborative Innovation Center of Quantum MatterFrontiers Science Center for Nano-OptoelectronicsSchool of PhysicsPeking UniversityBeijingChina International Center for Quantum Materials School of PhysicsPeking UniversityBeijingChina School of Mathematics and Physics University of Science and Technology BeijingBeijingChina Collaborative Innovation Center of Extreme Optics Shanxi UniversityTaiyuanShanxiChina Peking University Yangtze Delta Institute of Optoelectronics NantongJiangsuChina

The on-chip measurement of polarization states plays an increasingly crucial role in modern sensing and imaging *** high-performance monolithic linearly polarized photodetectors have been extensively studied,integrated circularly polarized light(CPL)photodetectors are still hindered by inadequate discrimination *** study presents a broadband CPL photodetector utilizing achiral all-dielectric nanostructures,achieving an impressive discrimination ratio of~107 at a wavelength of 405 *** device shows outstanding CPL discrimination capability across the visible band without requiring intensity *** functions based on the CPL-dependent near-field modes within achiral structures:under left or right CPL illumination,distinct near-field modes are excited,resulting in asymmetric irradiation of the two electrodes and generating a photovoltage with directions determined by the chirality of the incident light *** proposed design strategy facilitates ultra-compact CPL detection across diverse materials,structures,and spectral ranges,presenting a novel avenue for achieving high-performance monolithic CPL detection.

关键词： polarization polarized dielectric

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低对称性的亚波长阵列增强型的GeSe偏振探测器（英文）

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Science Bulletin 2023年第2期68卷 173-179页

作者：周子琦沈涛王盼郭泉林王卿赫马辰俊辛凯耀赵凯于雅俐秦彪刘岳阳杨珏晗洪浩刘开辉刘灿邓惠雄魏钟鸣 State key laboratory of Superlattices and Microstructures Institute of Semiconductors Chinese Academy of Sciences State key laboratory for Mesoscopic Physics Frontiers Science Centre for Nano-optoelectronics School of Physics Peking University Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences Department of Physics Renmin University of China

偏振敏感光电探测器可通过探测光偏振态的变化从而分辨纹理、应力和粗糙度等多种信息,在安全、医疗诊断和航空航天领域具有独特的优势.基于面内各向异性的二维材料的偏振光探测器可简化传统探测器的复杂透镜系统,促进了光电器件的集成... 详细信息

偏振敏感光电探测器可通过探测光偏振态的变化从而分辨纹理、应力和粗糙度等多种信息,在安全、医疗诊断和航空航天领域具有独特的优势.基于面内各向异性的二维材料的偏振光探测器可简化传统探测器的复杂透镜系统,促进了光电器件的集成化与小型化.然而,基于面内各向异性的二维材料的偏振光探测器的光电流各向异性比不足(通常小于10),限制了偏振信号的检测分辨率.本文设计了基于二维硒化亚锗(GeSe)的亚波长阵列(SWA)结构,进一步提高其各向异性灵敏度,并将光电流各向异性从1.6提高到18.本研究发现,SWA结构可以进一步增强电荷分布的不对称性,提高GeSe材料在扶手椅方向上的光吸收和光电跃迁概率,从而提高了偏振灵敏度.此外,基于GeSe SWA的光电探测器在808 nm的近红外波长下表现出宽的功率范围(40 dB)和弱光探测能力(0.1 LUX).该工作为提高二维材料的偏振灵敏度提供了可行性指导,将有利于促进高分辨率偏振成像传感器的发展.

关键词： Germanium selenium (GeSe) polarization-sensitive photodetectors Sub-wavelength array Anisotropy ratio

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Fluorescent probes for imaging and detection of plant hormones and their receptors

Advanced Agrochem

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Advanced Agrochem 2024年第1期3卷 83-98页

作者： Yiliang Chen Bo He Mengxu Hu Jiawei Bao Wei Yan Xinya Han Yonghao Ye State&Local Joint Engineering Research Center of Green Pesticide Invention and Application College of Plant ProtectionNanjing Agricultural UniversityNanjing210095China School of Chemistry and Chemical Engineering Anhui University of TechnologyMa’anshan243032China

Exploring plant behavior at the cellular scale in a minimally invasive manner is critical to understanding plant adaptation to the *** play vital regulatory roles in multiple aspects of plant growth and development and acclimation to environmental *** the biosynthesis,modification,transportation,and degradation of plant hormones in plants change with time and space,their content level and distribution are highly *** monitor the production,transport,perception,and distribution of phytohormones within undamaged tissues,we require qualitative and quantitative tools endowed with remarkably high temporal and spatial *** probes are regarded as excellent tools for widespread plant imaging because of their high sensitivity and selectivity,reproducibility,real-time in situ detection,and uncomplicated mechanism *** this review,we provide a systematical overview of the progress in the sensing and imaging of phytohormone fluorescent probes and fluorescently labeled phytohormones to their receptors in ***,forthcoming viewpoints and possible applications of these fluorescent probes within the realm of plants are also *** hold the conviction that the new perspective brought by this paper can promote the development of fluorescent probes,enabling them to have better detection performance in plant hormone imaging.

关键词： Plant hormones Receptors Fluorescent probe Visualization

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Crosstalk-free achromatic full Stokes imaging polarimetry metasurface enabled by polarization-dependent phase optimization

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Opto-Electronic Advances 2022年第11期5卷 16-28页

作者： Yaxin Zhang Mingbo Pu Jinjin Jin Xinjian Lu Yinghui Guo Jixiang Cai Fei Zhang Yingli Ha Qiong He Mingfeng Xu Xiong Li Xiaoliang Ma Xiangang Luo State key laboratory of Optical Technologies on Nano-Fabrication and Micro-Engineering Institute of Optics and ElectronicsChinese Academy of SciencesChengdu 610209China Research Center on Vector Optical Fields Institute of Optics and ElectronicsChinese Academy of SciencesChengdu 610209China School of Optoelectronics University of Chinese Academy of SciencesBeijing 100049China key laboratory of Optoelectronic technology and System Ministry of EducationChongqing UniversityChongqing 400030China

imaging polarimetry is one of the most widely used analytical technologies for object detection and *** date,most metasurface-based polarimetry techniques are severely limited by narrow operating bandwidths and inevitable crosstalk,leading to detrimental effects on imaging quality and measurement ***,we propose a crosstalkfree broadband achromatic full Stokes imaging polarimeter consisting of polarization-sensitive dielectric metalenses,implemented by the principle of polarization-dependent phase *** with the single-polarization optimization method,the average crosstalk has been reduced over three times under incident light with arbitrary polarization ranging from 9μm to 12μm,which guarantees the measurement of the polarization state more *** experimental results indicate that the designed polarization-sensitive metalenses can effectively eliminate the chromatic aberration with polarization selectivity and negligible *** measured average relative errors are 7.08%,8.62%,7.15%,and 7.59%at 9.3,9.6,10.3,and 10.6μm,***,the broadband full polarization imaging capability of the device is also *** work is expected to have potential applications in wavefront detection,remote sensing,light-field imaging,and so forth.

关键词： metasurface broadband achromatic crosstalk-free full polarization imaging polarimetry

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A review of dielectric optical metasurfaces for spatial differentiation and edge detection

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Frontiers of Optoelectronics 2021年第2期14卷 187-200页

作者： Lei WAN Danping PAN Tianhua FENG Weiping LIU Alexander A.POTAPOV Department of Electronic Engineering College of Information Science and TechnologyJinan UniversityGuangzhou 510632China Wuhan National laboratory for Optoelectronics Huazhong University of Science and TechnologyWuhan 430074China JNU-IREE RAS Joint laboratory of Information Techniques and Fractal Signal Processing Jinan UniversityGuangzhou 510632China key laboratory of Optoelectronic Information and Sensing Technologies of Guangdong Higher Education Institutes Jinan UniversityGuangzhou 510632China Institute of Radio Engineering and Electronics Russian Academy of SciencesMoscow 125009Russia

Dielectric metasurfaces-based planar optical spatial differentiator and edge detection have recently been proposed to play an important role in the parallel and fast image processing *** the development of dielectric metasurfaces of different geometries and resonance mechanisms,diverse on-chip spatial differentiators have been proposed by tailoring the dispersion characteristics of subwavelength *** review focuses on the basic principles and characteristic parameters of dielectric metasurfaces as first-and second-order spatial differentiators realized via the Green's function *** spatial bandwidth and polarization dependence are emphasized as key properties by comparing the optical transfer flinctions of metasurfaces for different incident wavevectors and *** present the operational capabilities of a two-dimensional spatial differentiator in image information acquisition,edge detection is described to illustrate the practicability of the *** an application example,experimental demonstrations of edge detection for different biological cells and a flower mold are discussed,in which a spatial differentiator and objective lens or camera are integrated in three optical pathway *** realization of spatial differentiators and edge detection with dielectric metasurfaces provides new opportunities for ultrafast information identification in biological imaging and machine vision.

关键词： dielectric metasurfaces spatial differentiator edge detection optical transfer function

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Single-shot measurement of wavelength-resolved state of polarization dynamics in ultrafast lasers using dispersed division-of-amplitude

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Photonics Research 2023年第1期11卷 35-43页

作者： QIANG WU LEI GAO YULONG CAO STEFAN WABNITZ ZHENGHU CHANG AI LIU JINGSHENG HUANG LIGANG HUANG TAO ZHU key laboratory of Optoelectronic technology&Systems(Ministry of Education) Chongqing UniversityChongqing 400044China Dipartimento di Ingegneria dell'Informazione Elettronica e TelecomunicazioniSapienza Universitadi Roma00184 RomaItaly CNR-INO Istituto Nazionale di Ottica80078 Pozzuoli(NA)Italy

Characterization of the state of polarization(SOP)of ultrafast laser emission is relevant in several application fields such as field manipulation,pulse shaping,testing of sample characteristics,and biomedical ***,since high-speed detection and wavelength-resolved measurements cannot be simultaneously achieved by commercial polarization analyzers,single-shot measurements of the wavelength-resolved SOP of ultrafast laser pulses have rarely been ***,we propose a method for single-shot,wavelength-resolved SOP measurements that exploits the method of division-of-amplitude under far-field transformation.A large accumulated chromatic dispersion is utilized to time-stretch the laser pulses via dispersive Fourier transform,so that spectral information is mapped into a temporal *** calibrating our test matrix with different wavelengths,wavelength-resolved SOP measurements are achieved,based on the division-of-amplitude approach,combined with high-speed opto-electronic *** a proof-of-concept demonstration,we reveal the complex wavelength-dependent SOP dynamics in the build-up of dissipative *** experimental results show that the dissipative soliton exhibits far more complex wavelength-related polarization dynamics,which are not shown in single-shot spectrum *** method paves the way for single-shot measurement and intelligent control of ultrafast lasers with wavelength-resolved SOP structures,which could promote further investigations of polarization-related optical signal processing techniques,such as pulse shaping and hyperspectral polarization imaging.

关键词： polarization resolved dynamics

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Optical polarization manipulations with anisotropic nanostructures

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PhotoniX 2024年第1期5卷 205-243页

作者： Zhancheng Li Wenwei Liu Yuebian Zhang Hua Cheng Shuang Zhang Shuqi Chen The key laboratory of Weak Light Nonlinear Photonics Ministry of EducationSchool of Physics and TEDA Institute of Applied PhysicsNankai UniversityTianjin 300071China School of Materials Science and Engineering Smart Sensing Interdisciplinary Science CenterNankai UniversityTianjin 300350China New Cornerstone Science laboratory Department of PhysicsThe University of Hong KongPokfulamHong KongChina The Collaborative Innovation Center of Extreme Optics Shanxi UniversityTaiyuan 030006ShanxiChina

Over the past few decades,metasurfaces have revolutionized conventional bulky optics by providing an effective approach to manipulate optical waves at the subwavelength *** advancement holds great potential for compact,multifunctional,and reconfigurable optical ***,metasurfaces constructed with anisotropic nanostructures have exhibited remarkable capability in manipulating the polarization state of optical ***,they can be employed to achieve independent control of the amplitude and phase of optical waves in different polarization *** capability has garnered significant attention from the photonics community due to its unprecedented potential for polarization-selective and-multiplexed optical wave manipulation,offering versatile applications in optical imaging,communication,and *** paper reviews the design principles,representative works,and recent advancements in anisotropic nanostructures for optical polarization manipulation,detection,as well as polarization-selective and-multiplexed optical wave *** insights into further developments in this research area are provided.

关键词： Metasurface Anisotropic nanostructures Optical wave manipulation polarization-multiplexed manipulation

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Analysis and inversion of target polarization characteristics based on pBRDF

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Journal of Systems Engineering and Electronics 2024年第5期35卷 1073-1083页

作者： GU Xiansong FU Qiang WANG Liya LIU Xuanwei FAN Xinyu DUAN Jin LI Yingchao School of Optical Engineering Beijing University of TechnologyBeijing 100081China School of Optoelectronic Engineering Changchun University of Science and TechnologyChangchun 130022China

imaging detection is an important means to obtain target *** traditional imaging detection technology mainly collects the intensity information and spectral information of the target to realize the classification of the *** practical applications,due to the mixed scenario,it is difficult to meet the needs of target *** with intensity detection,the method of polarization detection can effectively enhance the accuracy of ground object target recognition(such as the camouflage target).In this paper,the reflection mechanism of the target surface is studied from the microscopic point of view,and the polarization characteristic model is established to express the relationship between the polarization state of the reflected signal and the target surface *** polarization characteristic test experiment is carried out,and the target surface parameters are retrieved using the experimental *** results show that the degree of polarization(DOP)is closely related to the detection zenith angle and azimuth ***(DOP)of the target is the smallest in the direction of light source incidence and the largest in the direction of specular *** materials have different polarization *** comparing their DOP,target classification can be achieved.

关键词： polarization detection polarization degree zenith angle azimuth angle target classification.

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Broadband,polarization-Sensitive,and Self-Powered High-Performance Photodetection of Hetero-Integrated MoS_(2)on Lithium Niobate

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Research 2024年第2期2023卷 203-212页

作者： Zhigang He Heyuan Guan Xijie Liang Junteng Chen Manyan Xie Kaiwen Luo Ran An Liang Ma Fengkai Ma Tiefeng Yang Huihui Lu Guangdong Provincial key laboratory of Optical Fiber Sensing and Communications Jinan UniversityGuangzhou 510632China key laboratory of Optoelectronic Information and Sensing Technologies of Guangdong Higher Education Institutes Jinan UniversityGuangzhou 510632China institute of Fluid Physics China Academy of Engineering PhysicsMianyang 621900China College of Physics and Electronic Engineering Hengyang Normal UniversityHengyang 421008China

High-performance photodetectors hold promising potential in optical communication and imaging ***,conventional counterparts are suffering narrow detection range,high power consumption,and poor polarization *** originating from switchable polarization in ferroelectrics can be used to optimize the photo-to-electric procedure and improve the photodetection *** this regard,we constructed a configuration by integrating 2-dimensional molybdenum disulfide(MoS_(2))with ferroelectric lithium niobate(LiNbO_(3)),resulting in the MoS_(2)/LiNbO_(3)heterostructured *** from the pyroelectric effect of LiNbO_(3),the limitation of bandgap on the detection range can be broken,thus broadening the response band of the detector to 365 to 1,064 nm,as well as enabling the self-powered ***,high carrier mobility and decent light absorbance of MoS_(2)introduce robust light-matter interactions with the underlying LiNbO_(3),leading to ultrafast rise/fall times of≈150μs/250μs and switching ratios of up to≈***,the highest responsivity,specific detectivity,and external quantum efficiency achieved were 17.3 A·W^(-1),4.3×10^(11)Jones,and 4,645.78%,***,because of the anisotropy of the spontaneous-polarized LiNbO_(3)substrate,the photocurrent of the device achieved a dichroic ratio of 7.42,comparing favorably to most MoS_(2)-based *** work demonstrates the integration potential between ferroelectric LiNbO_(3)and 2-dimensional materials for high-performance photodetection.

关键词： polarization ferroelectric polarization

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