Morpho蝴蝶蝶翅微纳结构气敏特性分析

Gas Sensitivity for Nanostructures of Morpho Butterfly Wing Scales

基于Morpho蝴蝶蝶翅在气体中反射率与介质折射率关系的研究,提出一种简单、快捷的气体敏感性检测方法。在Morpho蝶翅微纳结构基础上,建立一种便于分析的平面结构模型,研究模型参数对反射率的影响。将仿真结果与测试结果对比发现:介质浓度不同折射率不同,光学特性表现则不同,浓度越高,折射率增大,反射光谱峰值减小且向波长较大方向偏移。这一结论揭示了Morpho蝶翅气体敏感性是由于气体介质在蝶翅表面形成了液体薄膜,从而改变光学特性所导致的。

Based on the study of the relationship between reflectivity and refractive in a gas medium for Morpho butterfly wing scales,a simple and quick method was proposed to detect gas sensitivity.A planar structure model followed with micro-nano structure was established to facilitate the research of model parameters on the efficiency of the reflection.The comparison between simulation results and test data indicates that the optical properties is closely related to media concentration.The reflection spectral peak wavelength decreases and shifts towards long wave with the increase of concentration refractive index.The finding reveals that gas sensitivity of Morpho butterfly wing scales is due to the optical properties being changed by the liquid film,which can be used to design and manufacture the gas detection equipment.