检索结果-南通市图书馆

Controllable split polarization singularities for ultra-precise displacement sensing

Photonics Research 2024年第7期12卷 1478-1484页

作者： JIAKANG ZHOU HAIXIANG MA SHUOSHUO ZHANG WU YUAN changjun min XIAOCONG YUAN YUQUAN ZHANG Nanophotonics Research Centre Institute of Microscale Optoelectronics&State Key Laboratory of Radio Frequency Heterogeneous IntegrationShenzhen UniversityShenzhen 518060China Research Center for Humanoid Sensing Research Institute of Intelligent SensingZhejiang LabHangzhou 311100China Department of Biomedical Engineering The Chinese University of Hong KongHong KongChina

The topic of optical precise displacement measurement has garnered significant attention and generated widespread interest recently. The use of optical singularity offers a potential solution for this purpose, although effectively manipulating the singularity in an ideal manner remains challenging. In this work, we propose a theoretical approach to achieve controllable position modulation of the C-point in the focal plane, whose spatial position can be easily modulated by adjusting the relative offset factor β and the offset angle α of an azimuthal polarization beam(APB), while the interval and orientation of the C-points can be flexibly regulated. Notably, the chiral polarization state undergoes a distinct reversal along the link-line connecting the two C-points, thereby providing a promising approach for accurate displacement sensing. To evaluate its sensing characteristics, the varying pattern of the scattered field intensity is monitored when sweeping a gold helix and nanoparticle along the link-line. The results of simulation quality index Q verify that the equilibrium factor of the scattering field possesses an obvious linear relationship with the displacement, signifying a precise sub-nanometric *** research introduces new methods for the flexible control of polarization singularities in tightly focused fields,thereby enhancing the utilization of circular polarization properties near C-points for displacement *** findings not only enrich the field of nanometer measurement technology but also pave the way for new avenues of research in this domain.

关键词： polarization displacement precise

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

A vectorial model for the nonlinear gradient force exerted on metallic Rayleigh nanoparticles

引用

Chinese Optics Letters 2024年第2期22卷 207-213页

作者：朱政张聿全闵长俊 Aurèle J.LAdam H.Paul Urbach 袁小聪 Research Center for Humanoid Sensing Research Institute of Intelligent SensingZhejiang LabHangzhou 311100China Nanophotonics Research Center Institute of Microscale Optoelectronics&State Key Laboratory of Radio Frequency Heterogeneous IntegrationShenzhen UniversityShenzhen 518060China Optics Research Group ImPhys DepartmentFaculty of Applied SciencesDelft University of TechnologyDelft 2628 CJThe Netherlands

Optical tweezers have proved to be a powerful tool with a wide range of *** gradient force plays a vital role in the stable optical trapping of *** scalar method is convenient and effective for analyzing the gradient force in traditional optical ***,when the third-order nonlinear effect of the nano-object is stimulated,the scalar method cannot adequately present the optical response of the metal nanoparticle to the external optical ***,we propose a theoretical model to interpret the nonlinear gradient force using the vector *** combining the optical Kerr effect,the polarizability vector of the metallic nanoparticle is derived.A quantitative analysis is obtained for the gradient force as well as for the optical potential *** vector method yields better agreement with reported experimental *** suggest that this method could lead to a deeper understanding of the physics relevant to nonlinear optical trapping and binding phenomena.

关键词： gradient forces nonlinear effect metallic nanoparticles

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

On-chip plasmonic spin-Hall nanograting for simultaneously detecting phase and polarization singularities

引用

Light(Science & Applications) 2020年第1期9卷 1095-1103页

作者： Fu Feng Guangyuan Si changjun min Xiaocong Yuan Michael Somekh Nanophotonics Research Center Shenzhen Key Laboratory of Micro-Scale Optical Information TechnologyShenzhen UniversityShenzhen 518060China Melbourne Centre for Nanofabrication Victorian Node of the Australian National Fabrication FacilityClaytonVICAustralia Faculty of Engineering University of NottinghamNottingham NG72RDUK

Phase and polarization singularities are important degrees of freedom for electromagnetic field *** these singularities is essential for modern optics,but it is still a challenge,especially in integrated optical *** this paper,we propose an on-chip plasmonic spin-Hall nanograting structure that simultaneously detects both the polarization and phase singularities of the incident cylindrical vortex vector beam(CVVB).The nanograting is symmetry-breaking with different periods for the upper and lower parts,which enables the unidirectional excitation of the surface plasmon polariton depending on the topological charge of the incident optical vortex ***,spin-Hall meta-slits are integrated onto the grating so that the structure has a chiral response for polarization *** demonstrate theoretically and experimentally that the designed structure fully discriminates both the topological charges and polarization states of the incident beam *** proposed structure has great potential in compact integrated photonic circuits.

关键词： polarization simultaneous phase

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Plasmonic tweezers: for nanoscale optical trapping and beyond

引用

Light(Science & Applications) 2021年第4期10卷 475-515页

作者： Yuquan Zhang changjun min Xiujie Dou Xianyou Wang Hendrik Paul Urbach Michael G.Somekh Xiaocong Yuan Nanophotonics Research Center Shenzhen Key Laboratory of Micro-Scale Optical Information Technology&Institute of Microscale OptoelectronicsShenzhen UniversityShenzhen 518060China Optics Research Group Delft University of TechnologyLorentzweg 12628G DelftThe Netherlands

Optical tweezers and associated manipulation tools in the far field have had a major impact on scientific and engineering research by offering precise manipulation of small *** recently,the possibility of performing manipulation with surface plasmons has opened opportunities not feasible with conventional far-field optical *** use of surface plasmon techniques enables excitation of hotspots much smaller than the free-space wavelength;with this confinement,the plasmonic field facilitates trapping of various nanostructures and materials with higher *** successful manipulation of small particles has fostered numerous and expanding *** this paper,we review the principles of and developments in plasmonic tweezers techniques,including both nanostructure-assisted platforms and structureless *** methods and evaluation criteria of the techniques are presented,aiming to provide a guide for the design and optimization of the *** most common novel applications of plasmonic tweezers,namely,sorting and transport,sensing and imaging,and especially those in a biological context,are critically ***,we consider the future of the development and new potential applications of this technique and discuss prospects for its impact on science.

关键词： trapping offering optical

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

External field-strengthened Ostwald nanowelding

引用

Nano Research 2022年第5期15卷 4525-4535页

作者： Moxia Li Xi Xie Yaomengli Xu Jianfang Liu Yanan Fu Mei Han Xucheng Li Xidong Duan changjun min Jiawen Hu Hunan Key Laboratory of Two-Dimensional Materials Advanced Catalytic Engineering Research Center of the Ministry of Educationand College of Chemistry and Chemical EngineeringHunan UniversityChangsha 410082China Nanophotonics Research Center Shenzhen Key Laboratory of Micro-Scale Optical Information Technology&Institute of Microscale OptoelectronicsShenzhen UniversityShenzhen 518060China State Key Laboratory for Physical Chemistry of Solid Surfaces Xiamen UniversityXiamen 361005China

The accomplishment of nanowelding typically requires the input of high energy,possibly causing appreciable damages to the brittle ***,we report an external field(EF,i.e.,light,direct current(DC),and alternating current(AC))-strengthened Ostwald nanowelding(ONW)strategy to enable low-temperature nanowelding of Au nanoparticles(NPs)with nanoscale spacing in solution and propose an electron localization mechanism to understand *** reveal that the EF-derived local electrons not only greatly strengthen the dissolution of surface atoms and the reduction of Au3+ions dissolved,but also confine(together with ordered water molecules)the transport of Au^(3+)ions within the ***,the electrochemical Ostwald ripening(OR)process of the Au NPs is actively strengthened,which,along with the local electron-strengthened surface atom diffusion(as a result of the strong electrostatic repulsion created),enables feasible ONW for solution processing of interdigital electrodes(IDEs)from Au NPs and high-performance transparent conductor(TC)from Ag nanowires(NWs).Our low-temperature nanowelding strategy offers an efficient interconnection technique for the processing of functional nanodevices from individual nanomaterials.

关键词： external field(EF) Ostwald ripening(OR) nanowelding Au nanoparticle(NP) Ag nanowire(NWs)

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Research progress of femtosecond surface plasmon polariton

引用

Chinese Physics B 2020年第2期29卷 10-30页

作者： Yulong Wang Bo Zhao changjun min Yuquan Zhang Jianjun Yang Chunlei Guo Xiaocong Yuan Nano Photonics Research Centre Shenzhen Key Laboratory of Micro-Scale Optical Information TechnologyShenzhen UniversityShenzhen 518060China The Guo China–US Photonics Laboratory State Key Laboratory of Applied OpticsChangchun Institute of OpticsFine Mechanics and PhysicsChinese Academy of SciencesChangchun 130033China

As the combination of surface plasmon polariton and femtosecond laser pulse,femtosecond surface plasmon polariton has both nanoscale spatial resolution and femtosecond temporal resolution,and thus provides promising methods for light field manipulation and light-matter interaction in extreme small spatiotemporal ***,the research on femtosecond surface plasmon polariton is mainly concentrated on two aspects:one is investigation and characterization of excitation,propagation,and dispersion properties of femtosecond surface plasmon polariton in different structures or materials;the other one is developing new applications based on its unique properties in the fields of nonlinear enhancement,pulse shaping,spatiotemporal super-resolved imaging,and ***,we introduce the research progress of properties and applications of femtosecond surface plasmon polariton,and prospect its future research *** the further development of femtosecond surface plasmon polariton research,it will have a profound impact on nano-optoelectronics,molecular dynamics,biomedicine and other fields.

关键词： surface plasmon polariton femtosecond laser pulse spatiotemporal super-resolution nonlinear optics

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Wide-field in situ multiplexed Raman imaging with superresolution

引用

Photonics Research 2018年第6期6卷 530-534页

作者： HOUKAI CHEN XIAOJING WU YUQUAN ZHANG YONG YANG changjun min SIWEI ZHU XIAOCONG YUAN QIAOLIANG BAO JING BU Nanophotonics Research Center Shenzhen Key Laboratory of Micro-Scale Optical Information Technology Shenzhen UniversityShenzhen 518060 China Tianjin Union Medical Center Tianjin 300121 China Institute of Modern Optics Nankai University Tianjin 300071 China College of Electronic Science and Technology Shenzhen UniversituyShenzhen 518060 China

Because of the fingerprint-like specificity of its characteristic spectrogram, Raman spectral imaging has been applied widely in various research areas. Using a combination of structured illumination with the surface- enhanced Raman scattering （SERS） technique, wide-field Raman imaging is developed with a significant improve- ment in spatial resolution. As a result of the relatively narrow Raman characteristic peaks, optically encoded SERS nanoparticles can be used to perform multiplexed imaging. The results show excellent superresolution wide-fidd multiplexed imaging performance. The developed technique has extraordinary potential for applications in biological imaging and other related fields.

关键词： Raman microscopy Surface-enhanced Raman scattering Superresolution

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Facilitated tip-enhanced Raman scattering by focused gap-plasmon hybridization

引用

Photonics Research 2020年第2期8卷 103-109页

作者： HOUKAI CHEN YUQUAN ZHANG YANMENG DAI changjun min SIWEI ZHU XIAOCONG YUAN Nanophotonics Research Center Shenzhen Key Laboratory of Micro-Scale Optical Information TechnologyShenzhen UniversityShenzhen 518060China Tianjin Union Medical Center Tianjin 300121China

Tip-enhanced Raman scattering(TERS)spectroscopy is a nondestructive and label-free molecular detection approach that provides high sensitivity and nanoscale spatial ***,it has been used in a wide array of *** demonstrate a gap-plasmon hybridization facilitated by a bottom-illuminated TERS *** gap-plasmon hybridization effect is first performed with the finite-difference time-domain method to optimize the parameters,and experiments are then conducted to calibrate the *** results demonstrate an enhancement factor of 1157 and a spatial resolution of 13.5 *** proposed configuration shows great potential in related surface imaging applications in various fields of research.

关键词： scattering plasmon finite

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Enhancing plasmonic trapping with a perfect radially polarized beam

引用

Photonics Research 2018年第9期6卷 847-857页

作者： xianyou wang yuquan zhang yanmeng dai changjun min xiaocong yuan Nanophotonics Research Center Shenzhen Key Laboratory of Micro-Scale Optical Information TechnologyShenzhen UniversityShenzhen 518060China

Strong plasmonic focal spots, excited by radially polarized light on a smooth thin metallic film, have been widely applied to trap various micro-and nano-sized objects. However, the direct transmission part of the incident light leads to the scattering force exerted on trapped particles, which seriously affects the stability of the plasmonic *** we employ a novel perfect radially polarized beam to solve this problem. Both theoretical and experimental results verify that such a beam could strongly suppress the directly transmitted light to reduce the piconewton scattering force, and an enhanced plasmonic trapping stiffness that is 2.6 times higher is achieved in *** present work opens up new opportunities for a variety of research requiring the stable manipulations of particles.

关键词：金属薄膜偏振光等离子体通讯技术

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Massive individual orbital angular momentum channels for multiplexing enabled by Dammann gratings

引用

Light(Science & Applications) 2015年第1期4卷 463-469页

作者： Ting Lei Meng Zhang Yuru Li Ping Jia Gordon Ning Liu Xiaogeng Xu Zhaohui Li changjun min Jiao Lin Changyuan Yu Hanben Niu Xiaocong Yuan Institute of Micro&Nano Optics Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong ProvinceCollege of Optoelectronic EngineeringShenzhen UniversityShenzhen 518060China Institute of Modern Optics Nankai UniversityTianjin 300071China Institute of Photonics Technology Jinan UniversityGuangzhou 510632China Huawei Technologies Co. LtdShenzhen 518129China School of Physics University of MelbourneVIC 3010Australia Department of Electrical and Computer Engineering National University of Singapore117576Singapore

Data transmission rates in optical communication systems are approaching the limits of conventional multiplexing *** angular momentum(OAM)in optical vortex beams offers a new degree of freedom and the potential to increase the capacity of free-space optical communication systems,with OAM beams acting as information carriers for OAM division multiplexing(OAM-DM).We demonstrate independent collinear OAM channel generation,transmission and simultaneous detection using Dammann optical vortex gratings(DOVGs).We achieve 80/160 Tbit s^(-1) capacity with uniform power distributions along all channels,with 1600 individually modulated quadrature phase-shift keying(QPSK)/16-QAM data channels multiplexed by 10 OAM states,80 wavelengths and two ***-enabled OAM multiplexing technology removes the bottleneck of massive OAM state parallel detection and offers an opportunity to raise optical communication systems capacity to Pbit s^(-1) level.

关键词： holographic gratings multiplexing optical communications orbital angular momentum

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

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

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

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

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

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：