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用微透镜阵列在单模光纤中写入长周期光纤光栅的新方法

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光学学报 1998年第11期18卷 1599-1600页

作者： h.y.tam 杜卫冲 Michael.S.y.Liu 香港理工大学电机工程系华南师范大学物理系

报道了用微透镜阵列、几百个准分子激光脉冲有效地写入长周期光纤光栅的新方法。

关键词：微透镜阵列准分子激光脉冲光纤光栅单模

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单光纤光栅温度应变双参数传感研究

中国激光 2001年第4期28卷 372-374页

作者：关柏鸥 h.y.tam S.L.ho W.h.Chung 董孝义香港理工大学电机工程系南开大学现代光学研究所天津300071

报道了一种用一根光纤光栅实现温度与应变同时测量的传感方案。用于同时传感温度与应变的光纤光栅写于两种不同光纤的连接处 ,本身具有两个反射峰。由于两种光纤的光热系数不同 ,两个反射峰具有不同的温度响应。通过监测两个反射峰的波... 详细信息

报道了一种用一根光纤光栅实现温度与应变同时测量的传感方案。用于同时传感温度与应变的光纤光栅写于两种不同光纤的连接处 ,本身具有两个反射峰。由于两种光纤的光热系数不同 ,两个反射峰具有不同的温度响应。通过监测两个反射峰的波长移动便可实现温度与应变的同时测量。

关键词：光纤光栅温度应变传感器

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多波长Raman光纤激光器

多波长Raman光纤激光器

中国光学学会2006年学术大会

作者：许立新 P．K．A．Wai K．F．Lui h.y.tam 明海香港理工大学工程学院香港理工大学工程学院香港理工大学工程学院香港理工大学工程学院中国科学技术大学光子技术研究所

＜正＞多波长光纤激光光源在光纤通信以及光纤传感中均有着重要的应用前景,引起了研究者的极大兴趣。多波长激光光源的基本结构是采用增益介质与梳状滤波器组成,增益介质采用稀土掺杂光纤、半导体放大器（SOA）或光纤非线性（SBS、SRS）...

＜正＞多波长光纤激光光源在光纤通信以及光纤传感中均有着重要的应用前景,引起了研究者的极大兴趣。多波长激光光源的基本结构是采用增益介质与梳状滤波器组成,增益介质采用稀土掺杂光纤、半导体放大器（SOA）或光纤非线性（SBS、SRS）等,采用稀土掺杂光纤或半导体放大器（SOA）作为增益介质时,由于均匀展宽介质的特性,使得各个波长之间存在着增益竞争,因而出现了各个波长输出功率的不稳定现象。利用光纤SRS非线性效应提供增益的多波长光纤激光器,由于非均匀展宽增益特性,使得

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实用的光纤电流传感器

传感器技术 1997年第1期16卷 19-21页

作者：陈冠三 M.S.Demokan h.y.tam 广州市中山大学无线电电子学系香港理工大学电机工程系

提出了一种结构小巧（体积为3cm×4cm×1．5cm）、使用方便的光纤电流传感器．该系统的传感头是以Sagnac干涉仅原理为基础，利用法拉第光学材料作为传感元件，经过巧妙的结构设计构成．传感头不含有任何与们振有关的光学元件，并且待测... 详细信息

提出了一种结构小巧（体积为3cm×4cm×1．5cm）、使用方便的光纤电流传感器．该系统的传感头是以Sagnac干涉仅原理为基础，利用法拉第光学材料作为传感元件，经过巧妙的结构设计构成．传感头不含有任何与们振有关的光学元件，并且待测的信号与光的偏振态和光强的起伏无关，使得该传感系统特别适用于电流遥测使用．初步实验结果和理论结果吻合．

关键词：法拉第晶体电流传感器 Sagnac干涉仪

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Temperature Sensor Based on a Dual-Core Fiber

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Temperature Sensor Based on a Dual-Core Fiber

Managing type 2 diabetes:targeting a microbial enzyme as a novel treatment option

中国光学学会2011年学术大会

作者： D.Chen 1,2,G.hu 1,B.Peng 1,G.Wu 1 and h.y.tam 2(1 Institute of Information Optics,Zhejiang Normal University,Jinhua 321004,China)(2 Photonics Research Centre,Department of Electrical Engineering,The hong Kong Polytechnic University,hong Kong SAR,China)

A novel temperature sensor based on a dual-core fiber（DCF） is *** DCF-based temperature sensor is simply formed by splicing a segment of DCF to two segments of single mode fibers,where the DCF is used as the sensing *** mode coupling between two fiber cores of the DCF is sensitive to the temperature-induced index change of the silica in the *** show that there is a linear relationship between the temperature of the DCF and the wavelength shift of the output spectrum of the DCF-based temperature sensor when the broadband light is injected into one fiber core of the DCF.

关键词： -temperature sensor dual-core fiber mode coupling

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Signal Transduction and Targeted Therapy 2024年第1期9卷 3-5页

作者： Anikó Keller-Pintér tamás Korcsmáros Tibor Vellai Department of Biochemistry Albert Szent-Györgyi Medical SchoolUniversity of SzegedSzeged6720Hungary Department of Metabolism Digestion and ReproductionImperial College LondonLondonW120NNUK Quadram Institute Bioscience Norwich Research ParkNorwichNR47UQUK Department of Genetics Eötvös Loránd University(ELTE)Budapest1117Hungary hungarian Research Network hUN-REN-ELTE Genetics Research Group Budapest1117Hungary

In a recent Science article,Wang and colleagues showed that the dipeptidyl peptidase 4(DPP4)enzyme produced by the gut microbiota can interfere with the effect of host glucagon-like peptide-1(GLP-1)involved in stimulating insulin secretion,and the specific inhibitor of microbial DPP4(mDPP4),combined with clinical inhibitors of host DPP4 isoenzymes,further promotes blood glucose homeostasis.1 These results point out why certain patients respond inadequately to an antidiabetic medication.

关键词： homeostasis stimulating clinical

Construction of 2D/2D Ti_(3)C_(2)T_(x)MXene/CdS heterojunction with photothermal effect for efficient photocatalytic hydrogen production

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Journal of Materials Science & Technology 2024年第4期171卷 1-9页

作者： T.y.huang Z.yang S.y.yang Z.h.Dai y.J.Liu J.h.Liao G.y.Zhong Z.J.Xie y.P.Fang S.S.Zhang Key Laboratory for Biobased Materials and Energy of Ministry of Education Guangdong Laboratory for Lingnan Modern AgricultureCollege of Materials and EnergySouth China Agricultural UniversityGuangzhou 510643China School of Physics and Optoelectronics South China University of TechnologyGuangzhou 510640China School of Chemical Engineering and Energy Technology Guangdong Provincial Key Laboratory of Distributed Energy SystemsDongguan University of TechnologyDongguan 523808China

The insensitivity of semiconductors to visible and infrared light is a key constraint on the utilization of light energy in photocatalytic *** photocatalysts with full-spectrum absorption through surface engineering is an effective approach to fully harnessing light energy in semiconductor ***,a novel stable Ti_(3)C_(2)T_(x)MXene/CdS heterojunction catalyst is obtained by in-situ epitaxial growth of two-dimensional(2D)CdS nanosheets on 2D MXene interface via a solvothermal *** exceptional light absorption properties of MXene confer outstanding full-spectrum driven photocat-alytic hydrogen evolution capability upon the heterogeneous *** unique 2D/2D structure effectively mitigated the recombination of photogenerated carriers,enhancing the photocatalytic performance of the ***,the composite catalyst exhibits a significantly higher surface temperature of 80.4℃under visible light irradiation at an intensity of 0.1 W/cm^(2),which is 1.84 times higher than that of *** irradiation of visible and near infrared light,the composite catalyst with photothermal ef-fect demonstrates a remarkable hydrogen evolution rate of 65.4 mmol g^(-1)h^(-1),which is 7.2 times higher than that of CdS *** study introduces a novel approach for constructing full-spectrum absorption catalysts and expands the application of the photothermal effect in photocatalytic hydrogen evolution research.

关键词： Two-dimensional structure heterostructure Photothermal effect Photocatalyst hydrogen evolution

Rational design of AgGaS/ZnS/ZnS quantum dots with a near-unity photoluminescence quantum yield via double shelling scheme

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Journal of Materials Science & Technology 2024年第2期169卷 235-242页

作者： h.X.Lu h.Liu Z.Z.Fu y.y.Chen h.Q.Dai Z.hu W.L.Zhang R.Q.Guo Institute for Electric Light Sources School of Information Science and TechnologyFudan UniversityShanghai 200433China Institute of Future Lighting Academy for Engineering and TechnologyFudan UniversityShanghai 200433China yiwu Research Institute of Fudan University YiwuZhejiang 322000China Zhongshan-Fudan Joint Innovation Center Zhongshan 528437China

In this study,a two-step method was used to synthesize highly luminescent AgGaS/ZnS/ZnS quantum dots(QDs).In the first step,an inner ZnS shell was formed via a one-pot method,which resulted in a smaller lattice mismatch between the AgGaS core and the outer ZnS shell,thereby facilitating the formation of a thick outer *** the two-step shelling process,the synthesized AgGaS/ZnS/ZnS QDs showed an excellent photoluminescence quantum yield(PLQy)of 96.4%with a peak wavelength of 508 nm,repre-senting the highest PLQy reported thus far for AgGaS ***,the effect of halogen ions in Zn precursors on the shelling process was *** was proposed that the capacity of halogen ions to coordinate with the QDs influenced the balance between Zn cation diffusion and ZnS shelling ***,the ZnS shelling reaction was dominant when ZnCl_(2)was employed,while Zn cation diffusion was the dominant process under the I^(−)-rich *** work provides insights into the interfacial restructuring during the ZnS shelling and offers a clear map for the tailored synthesis of core/shell QDs.

关键词： AgGaS Quantum dots Photoluminescence Core/shell Alloyed core/shell interface

A deep neural network based surrogate model for damage identification in full-scale structures with incomplete noisy measurements

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Frontiers of Structural and Civil Engineering 2024年第3期18卷 393-410页

作者： Tram BUI-NGOC Duy-Khuong Ly tam T TRUONG Chanachai ThONGChOM T.NGUyEN-ThOI Laboratory for Computational Mechanics Institute for Computational Science and Artificial IntelligenceVan Lang UniversityHo Chi Minh City 70000Vietnam Faculty of Mechanical-Electrical and Computer Engineering School of TechnologyVan Lang UniversityHo Chi Minh City 70000Vietnam Faculty of Civil Engineering School of TechnologyVan Lang UniversityHo Chi Minh City 70000Vietnam Department of Computer Science Aarhus UniversityAarhus 8000Denmark Thammasat University research unit in structural and foundation engineering Department of Civil EngineeringThammasat UniversityPathumthani 12120Thailand Laboratory for Applied and Industrial Mathematics Institute for Computational Science and Artificial IntelligenceVan Lang UniversityHo Chi Minh City 70000Vietnam Thammasat School of Engineering Thammasat UniversityPathumthani 12120Thailand

The paper introduces a novel approach for detecting structural damage in full-scale structures using surrogate models generated from incomplete modal data and deep neural networks(DNNs).A significant challenge in this field is the limited availability of measurement data for full-scale structures,which is addressed in this paper by generating data sets using a reduced finite element(FE)model constructed by SAP2000 software and the MATLAB programming *** surrogate models are trained using response data obtained from the monitored structure through a limited number of measurement *** proposed approach involves training a single surrogate model that can quickly predict the location and severity of damage for all potential *** achieve the most generalized surrogate model,the study explores different types of layers and hyperparameters of the training algorithm and employs state-of-the-art techniques to avoid overfitting and to accelerate the training *** approach’s effectiveness,efficiency,and applicability are demonstrated by two numerical *** study also verifies the robustness of the proposed approach on data sets with sparse and noisy measured ***,the proposed approach is a promising alternative to traditional approaches that rely on FE model updating and optimization algorithms,which can be computationally *** approach also shows potential for broader applications in structural damage detection.

关键词： vibration-based damage detection deep neural network full-scale structures finite element model updating noisy incomplete modal data