多层复合回音壁微腔热振荡效应的理论研究  

THEORETICAL STUDY ON OPTOTHERMAL OSCILLATION EFFECT OF MULTILAYER COMPOSITE WHISPERING GALLERY MICROCAVITY

作　　者：程肯 王铁军[1] CHENG Ken;WANG Tiejun(School of Science,Beijing University of Posts and Telecommunications,Beijing 100876)

机构地区：[1]北京邮电大学理学院,北京100876

出　　处：《物理与工程》2023年第5期11-16,共6页Physics and Engineering

基　　金：国家自然科学基金项目(62071064);北京邮电大学研究生专业课程建设教改项目(2022ZY119)。

摘　　要：多层复合材料微腔能够观察到单一材料无法实现的独特现象。本文在理论上分析了由丝状蛋白和聚二甲基硅烷(PDMS)涂覆的二氧化硅微球腔热振荡效应,并观察到该复合回音壁微腔独特的振荡波形。该波形由两个不同速度的振荡周期组成,在慢速的振荡周期中包含着若干快速的振荡周期,并且快速的振荡只出现在丝状蛋白和二氧化硅的温度上升区间。我们基于耦合模理论构建的热动力学方程解释了这一现象。这种双频振荡同时出现的现象在传感器领域有着潜在应用价值。Multilayer composite microcavity can achieve the unique phenomenon that can not be observed in single-material resonators.In this paper,the optothermal oscillation effect of silica microspheres coated with silk fibroin and polydimethylsiloxane(PDMS)is analyzed theoretically,and the unique oscillation waveform is observed.The waveform is composed of two oscillation with different periods,in which the slow oscillation contains several fast oscillation,and the fast oscillation only occurs in the temperature rise interval of silk fibroin and silica.We explain this phenomenon by constructing thermodynamics equations based on coupledmode theory.The simultaneous phenomenon of oscillation may have potential applications value in sensitive detection.

关 键 词：回音壁模式 微球腔 热振荡效应 复合材料 

分 类 号：TB306[一般工业技术—材料科学与工程]