中国光学（中英文）2025，Vol.18Issue(2)：297-306,10.DOI:10.37188/CO.2024-0125
TiO2/PSS薄膜对Kretschmann型传感器光谱的调制
Modulation of a Kretschmann-type sensor's spectra using TiO2/PSS thin films
摘要
Abstract
In order to explore the effect of titanium dioxide(TiO2)/poly(sodium 4-styrenesulfonate)(PSS)nanofilms on the Kretschmann-type surface plasmon resonance sensor,the spectral changes of the sensor after depositing TiO2/PSS nanofilms of different thicknesses were systematically studied.The reasons for the spectral changes were further explained and discussed theoretically.First,TiO2/PSS multilayer films were de-posited in situ on the surface of the glass chip sputtered with a gold layer via electrostatic layer-by-layer self-assembly technology,and the corresponding reflection spectra of the sensor were recorded in real time.Then,the original reflectance spectrum data was processed to make the spectral curve clearer and more visible.Fi-nally,the experimental results were simulated and analyzed using MATLAB software programming.The res-ults show that with the number of TiO2/PSS bilayers increasing,four different types of reflection peaks suc-cessively appeared in the sensor's spectra in the 450-900 nm wavelength range.The four types of reflection peaks correspond to the surface plasmon resonance mode,the first-order mode,the second-order mode,and the third-order mode of the transverse magnetic mode of the sensor,respectively.This indicates that the Kretschmann-type sensor's sensing mode and reflection spectrum type can be modulated by controlling the thickness of TiO2/PSS thin films.关键词
Kretschmann/传感器/层层自组装/传感模式Key words
Kretschmann/sensor/layer-by-layer self-assembly/sensing mode分类
化学引用本文复制引用
杨艳,张慧敏,张旭霖,闫秀晶,蔡雷,李秋顺,董文飞..TiO2/PSS薄膜对Kretschmann型传感器光谱的调制[J].中国光学（中英文）,2025,18(2):297-306,10.基金项目
国家重点研发计划项目(No.2022YFC2403500) （No.2022YFC2403500）
国家自然科学基金项目(No.62027825,No.61340032) （No.62027825,No.61340032）
山东省自然科学基金项目(No.ZR2019MC069) Supported by National Key R&D Program of China(No.2022YFC2403500) （No.ZR2019MC069）
National Natural Science Found-ation of China(No.62027825,No.61340032) （No.62027825,No.61340032）
Shandong Provincial Natural Science Foundation(No.ZR2019MC069) （No.ZR2019MC069）
