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One-step plasmonic welding and photolithographic patterning of silver nanowire network by UV-programable surface atom diffusion

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Nano Research 2022年第3期15卷 2582-2591页

作者： Gui-Shi Liu Ting Wang Yexiong Wang Huajian Zheng Yunsen chen Zijie Zeng Lei chen yaofei chen Bo-Ru Yang Yunhan Luo Zhe chen Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications Key Laboratory of Visible Light Communications of GuangzhouKey Laboratory of Optoelectronic Information and Sensing Technologies of Guangdong Higher Education InstitutesDepartment of Optoelectronic EngineeringJinan UniversityGuangzhou 510632China State Key Laboratory of Optoelectronic Materials and Technologies School of Electronics and Information TechnologySun Yat-Sen UniversityGuangzhou 510006China

Silver nanowire(AgNW)based transparent electrode(TE)plays a pivotal role in optoelectronics where TE is generally required to have fine pattern and high *** the rapid technological advances in either welding or patterning of AgNWs,there are few studies that combine the two processes in a simple and practical ***,aiming to fabricate high-performance patterned AgNW TE,we develop a simplified photolithography that enables both plasmonic nanowelding with low-level UV exposure(20 mW/cm^(2))and high-resolution micropatterning without photoresist and etching process by conjugating AgNW with diphenyliodonium nitrate(DPIN)and UV-curable *** cellulose as a binder can effectively enhance plasmonic heating,adhesion,and stability,while the photosensitive DPIN,capable of modulating surface atom diffusion,can boost the plasmonic welding at AgNW junction and induce patterning in AgNW network with Plateau-Rayleigh *** fabricated AgNW TE has high figure of merit of up to 1,000(3.7Ω/sq at 90%transmittance)and minimal pattern size down to 3µm,along with superior ***,a flexible smart window with high performance is demonstrated using the patterned and welded AgNW TEs,verifying the applicability of the simplified photolithography technique to optoelectronic devices.

关键词： silver nanowires plasmonic welding patterning Plateau-Rayleigh instability transparent electrodes

Highly sensitive vector magnetic fiber sensor based on hyperbolic metamaterials

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Science China(Physics,Mechanics & Astronomy) 2022年第11期65卷 115-124页

作者： Shiqi Hu Junhao Liang Jiayao chen Hongda cheng Qianyu Lin Weicheng Shi Jinming Yuan Gui-Shi Liu Lei chen Zhe chen Norhana Arsad yaofei chen Yunhan Luo Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications Department of Optoelectronic EngineeringCollege of Science and EngineeringJinan UniversityGuangzhou510632China Key Laboratory of Optoelectronic Information and Sensing Technologies of Guangdong Higher Education Institutes Jinan UniversityGuangzhou510632China Department of Electrical Electronic and Systems EngineeringFaculty of Engineering and Built EnvironmentUniversiti Kebangsaan MalaysiaBangi43600Malaysia

Hyperbolic metamaterials(HMMs) are novel artificial materials that excite the surface plasmon resonance(SPR) because of their unique hyperbolic dispersion properties. Herein, to the best of our knowledge, we propose the first HMM-based fiber SPR(HMM-SPR) sensor for vector magnetic detection. By selecting the composite materials and structural parameters of the HMM dispersion management, HMM-SPR sensors can achieve a high refractive index sensitivity of 14.43 μm/RIU. Vector magnetic field detection was performed with the HMM-SPR sensor encapsulated with a magnetic fluid. Compared with other ferrofluidbased magnetic field fiber sensors, the proposed sensor shows pronounced advantages in intensity and direction sensitivity of 1.307 nm/Oe and 7.116 nm/°, respectively. The sensor design approach presented in this paper provides an excellent demonstration of HMM-SPR sensors in various applications.

关键词： hyperbolic metamaterials(HMMs) vector magnetic detection surface plasmon resonance(SPR) direction sensitivity intensity sensitivity

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Self-assembled monolayer modulated Plateau-Rayleigh instability and enhanced chemical stability of silver nanowire for invisibly patterned,stable transparent electrodes

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Nano Research 2022年第5期15卷 4552-4562页

作者： Gui-Shi Liu Huajian Zheng Zijie Zeng Yexiong Wang Weidong Guo Ting Wang Heng chen Yunsen chen Shiqi Hu Lei chen yaofei chen Weiguang Xie Bo-Ru Yang Yunhan Luo Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications Key Laboratory of Visible Light Communications of GuangzhouKey Laboratory of Optoelectronic Information and Sensing Technologies of Guangdong Higher Education InstitutesDepartment of Optoelectronic EngineeringJinan UniversityGuangzhou 510632China Siyuan Laboratory Guangzhou Key Laboratory of Vacuum Coating Technologies and New Energy MaterialsDepartment of PhysicsJinan UniversityGuangzhou 510632China State Key Laboratory of Optoelectronic Materials and Technologies School of Electronics and Information TechnologySun Yat-sen UniversityGuangzhou 510006China

Patterned silver nanowire(AgNW)networks have been widely used as transparent electrodes in many optoelectrical ***,obvious patterning visibility and poor thermostability of AgNW are still limiting its practical ***,we report self-assembled monolayer(SAM)modulated Plateau-Rayleigh instability(PRI)of AgNW,which allows invisible patterning and superior stability of the AgNW *** opposite effects of different SAMs on the PRI are identified:the alkanethiol SAMs activate surface atom diffusion while the mercaptobenzoheterocyclic(MBH)SAMs suppress the *** degradation temperature of the AgNWs can be therefore,for the first time,tuned in the range of 193-381℃,so that the AgNW network can be patterned via PRI with a tiny optical difference between the insulative and conductive regions,i.e.,patterning ***,the MBH SAMs provide AgNW with excellent durability under thermal annealing and oxidation,which enhances the maximum heating temperature of the AgNW transparent heater by over 120℃.Beyond the micro-patterning,we consider that the developed SAM strategy can be extended to other metal nanowires for stability improvement and has huge potential in nanoengineering of one-dimensional metal materials.

关键词： Plateau-Rayleigh instability self-assembled monolayer invisible patterning thermal stability

Fiber loop ring-down cavity integrated U-bent single-mode-fiber for magnetic field sensing

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Photonics Research 2016年第6期4卷 322-326页

作者： yaofei chen Tiegen Liu Qun Han Wenchuan Yan Lin Yu College of Precision Instrument and Opto-Electronics Engineering Tianjin University Department of Mechanical Engineering Columbia University Key Laboratory of Opto-electronics Information Technology (Tianjin University) Ministry of Education

A novel magnetic field sensing system based on the fiber loop ring-down technique is proposed in this paper. In the fiber loop, a U-bent single-mode-fiber structure coated with magnetic fluid(MF) serves as the sensing head, and an erbium-doped fiber amplifier(EDFA) is introduced to compensate for the intrinsic loss of the cavity. The ring-down time of the system varies with the change of applied magnetic field due to the tunable absorption coefficient and refractive index of the MF. Therefore, measurement of the magnetic field can be realized by monitoring the ringdown time. The experimental results show that the performance of the system is extremely dependent on the interrogation wavelength, because both the gain of the EDFA and the loss of the sensing head are wavelength *** found that at the optimal wavelength, the ratio of the gain to loss attained its maximum. The sensing system was experimentally demonstrated and a sensitivity of-0.5951 μs∕Oe was achieved.

关键词： mode down ring EDFA Fiber loop ring-down cavity integrated U-bent single-mode-fiber for magnetic field sensing

Side Polished Fiber:A Versatile Platform for Compact Fiber Devices and Sensors

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Photonic Sensors 2023年第1期13卷 1-24页

作者： Linqing ZHUO Jieyuan TANG Wenguo ZHU Huadan ZHENG Heyuan GUAN Huihui LU yaofei chen Yunhan LUO Jun ZHANG Yongchun ZHONG Jianhui YU Zhe chen Key Laboratory of Optoelectronic Information and Sensing Technologies of Guangdong Higher Education Institutes Department of Optoelectronic EngineeringJinan UniversityGuangzhou 510632China Engineering Research Center on Visible Light Communication of Guangdong Province Department of Optoelectronic EngineeringJinan UniversityGuangzhou 510632China Key Laboratory of Visible Light Communications of Guangzhou Jinan UniversityGuangzhou 510632China

Side polished fiber(SPF)has a controllable average roughness and length of the side-polishing region,which becomes a versatile platform for integrating multiple materials to interact with the evanescent field to fabricate all-fiber devices and *** has been widely used in couplers,filters,polarizers,optical attenuators,photodetectors,modulators,and sensors for temperature,humidity,strain,biological molecules,chemical gas,and vector magnetic *** this article,an overview of the development history,fabrication techniques,fiber types,transmission characteristics,and varied recent applications of SPFs are ***,the fabrication techniques of SPFs are reviewed,including the V-groove assisted polishing technique and wheel polishing ***,the different types of SPFs and their characteristics are ***,various applications of SPFs are discussed and concluded theoretically and experimentally,including their principles and *** designing the device,the residual thickness and polishing lengths of the SPF need to be appropriately selected in order to obtain the best *** all-fiber devices and sensors is aimed at practical usability under harsh environments and allows to avoid the high coupling loss between optical fibers and on-chip integrated devices.

关键词： Side polished fiber(SPF) V-groove assisted polishing technique wheel polishing technique lab-on-fiber fiberdevices sensors

Photonic cavity enhanced high-performance surface plasmon resonance biosensor

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Photonics Research 2020年第4期8卷 448-456页

作者： GUI-SHI LIU XIN XIONG SHIQI HU WEIchenG SHI yaofei chen WENGUO ZHU HUADAN ZHENG JIANHUI YU NUR HIDAYAH AZEMAN YUNHAN LUO ZHE chen 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 Key Laboratory of Visible Light Communications of Guangzhou Jinan UniversityGuangzhou 510632China Photonics Technology Laboratory Centre of Advanced Electronic and Communication EngineeringFaculty of Engineering and Built EnvironmentUniversiti Kebangsaan Malaysia43600 UKM BangiSelangorMalaysia

Herein we propose a novel strategy to enhance surface plasmon resonance(SPR)by introducing a photonic cavity into a total-internal-reflection *** photonic cavity,which is comprised of a highly reflective photonic crystal(PC),defect layers,and a gold(Au)film,enables Fabry–Perot(FP)resonances in the defect layers and therefore narrows the SPR resonance width in the metallic surface as well as increases the electric field intensity and penetration depth in the evanescent *** fabricated sensor exhibits a 5.7-fold increase in the figure of merit and a higher linear coefficient as compared with the conventional Au-SPR *** demonstrated PC/FP cavity/metal structure presents a new design philosophy for SPR performance enhancement.

关键词： Photonic cavity enhanced high-performance surface plasmon resonance biosensor

西藏尼玛县牛山日干配错组沉积岩中碎屑锆石的U-Pb定年及意义

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地学前缘 2018年第1期25卷 197-209页

作者：侯恩刚陈耀飞高金汉王根厚中国地质大学(北京)地球科学与资源学院北京100083 中国科学院青藏高原研究所大陆碰撞与高原隆升重点实验室北京100101 中国科学院青藏高原地球科学卓越中心北京100101 中国科学院大学地球科学学院北京100049

羌塘地块作为近年地质研究的热点,其构造属性及是否存在太古宙—元古宙基底等问题一直存在争议。文中采用LA-ICP-MS锆石U-Pb法对西藏荣玛牛山上三叠统日干配错组碎屑锆石进行年代学研究,结果表明:(1)日干配错组沉积岩中最年轻碎屑锆石... 详细信息

羌塘地块作为近年地质研究的热点,其构造属性及是否存在太古宙—元古宙基底等问题一直存在争议。文中采用LA-ICP-MS锆石U-Pb法对西藏荣玛牛山上三叠统日干配错组碎屑锆石进行年代学研究,结果表明:(1)日干配错组沉积岩中最年轻碎屑锆石年龄为(215±2)Ma,表明日干配错组的最大沉积年限为该时间,结合区域地质资料可将其沉积时代限定为晚三叠世诺利期—瑞替期。(2)年龄介于(580±6)^(212±2)Ma,峰值为(298±2)Ma,表明在晚古生代早期受古特提斯洋发育早期地壳减薄伸展阶段岩浆活动影响,冈瓦纳古陆为其物源区;峰值为(442±3)Ma,表明在中古生代受加里东期扬子板块和华夏板块碰撞、拼合而形成的岩浆活动的影响,物源区为扬子大陆周缘;只获得1颗锆石650~500Ma年龄,表明源区基本未受到泛非运动岩浆活动的影响。(3)碎屑锆石出现相对少量介于(1 091±6)^(757±6)Ma的年龄,表明在中—新元古代受格林威尔—晋宁构造岩浆-热事件的影响,物源区与羌南地块一致。(4)日干配错组沉积岩碎屑锆石测年得到大量介于(3 214±7)^(1 380±15)Ma年龄值,占总量的近60%,峰值为(1 875±5)Ma和(2 531±6)Ma,表明羌塘地块受元古宙羌塘结晶基底主期构造-热事件和太古宙末全球超大陆拼合事件影响显著,且羌塘地块存在太古宙—元古宙基底。

关键词：西藏尼玛县牛山日千配错组碎屑锆石定年沉积时代物源太古宙元古宙基底

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基于XML的Web挖掘框架设计

仪器仪表学报 2006年第z3期27卷 2613-2614页

作者：陈尧妃倪应华陈焕通金华职业技术学院金华321007 浙江师范大学金华321004

针对Web挖掘中异构数据源和半结构化的特点,提出了基于XML的Web挖掘框架模型实现用户兴趣数据的挖掘。分析了该模型的工作流程,重点讨论了实现该模型的关键技术:XML文档统一模型、Web内容预处理模块和Web内容挖掘模块。

关键词：数据挖掘 Web挖掘 XML 框架设计

宽带光源入射下单模-多模-单模全光纤电流传感器特性研究

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中国激光 2014年第7期41卷 149-155页

作者：张荣香韩群刘铁根陈耀飞李琳天津大学精密仪器与光电子工程学院天津300072 光电信息技术教育部重点实验室(天津大学) 天津300072 河北大学物理科学与技术学院河北保定071002

建立了基于单模-多模-单模光纤结构和磁流体的全光纤电流传感器,此传感器能够通过检测透射光谱的特征波长漂移和传输损耗变化两种方法来探测电流。对于第一种方法,得到电流灵敏度为1243.7pm/A[77.9pm/Oe,1Oe=1/(4π)×103 A/m];对于第... 详细信息

建立了基于单模-多模-单模光纤结构和磁流体的全光纤电流传感器,此传感器能够通过检测透射光谱的特征波长漂移和传输损耗变化两种方法来探测电流。对于第一种方法,得到电流灵敏度为1243.7pm/A[77.9pm/Oe,1Oe=1/(4π)×103 A/m];对于第二种方法,传感特性依赖于波长的选择,分析了不同波长条件下传感器传输损耗的变化特性。结果表明:选择单波长时,传感特性受波长的影响,且传输损耗变化小,从而灵敏度小;使用宽波长范围内的总传输损耗时,传输损耗变化大,电流检测灵敏度大大加强,所得灵敏度为506.2dB/A(31.7dB/Oe),分别是单波长1529nm和1611nm下灵敏度的337倍和723倍。在自发辐射宽带光源入射条件下,利用探测器直接检测传感器输出光强的变化,得到26.8V/A(1.7V/Oe)的电流灵敏度。

关键词：光纤光学电流传感器单模-多模-单模磁流体宽带光源