藍尾翠鳳蝶（Papilio blumei）結構色與仿生技術之研究

本論文主要是探討藍尾翠鳳蝶（Papilio blumei）的成色機制與虹彩特性。因其翅膀上有兩種絢麗的色彩：分佈成帶狀且貫穿前後翅之綠色鱗片及位於後翅尾突之青色鱗片，是一個有趣的課題。使用光學／電子顯微鏡觀察，發現鱗片表面為二維凹洞陣列，而內部為二維光子晶體結構，主要成分是由幾丁質及空氣共同組成的。如此微妙的凹洞二維光子晶體結構，造就了蝴蝶鱗片的特殊結構色、混光效果與虹彩的光學特性。理論上我們利用有限時域差分法（Finite-Difference Time-Domain, FDTD）模擬蝴蝶鱗片的二維光子晶體結構，對蝴蝶鱗片的成色機制做分析，並提出目前尚未有文獻發表之斜向入射下的反射光譜。除了基本特性量測與模擬設計外，本論文利用聚苯乙烯小球（Polystyrene spheres）、感應耦合電漿離子蝕刻技術（Inductively coupled plasma etching）及雙電子槍蒸鍍法，成功仿造出蝴蝶鱗片的凹洞多層膜結構，並具有與其相同之結構色的光學特性。

關鍵字

蝴蝶；結構色；虹彩；光子晶體；仿生

並列摘要

In this study, we aim on the research of iridescence green band and cyan tail of the wing on Papilio blumei Fruhstorferi butterfly. The wing scales consist of regular concave multilayer stack that are made from alternating chitin and chitin-air layers. The structural color found in biological systems has complicated nanostructure that it is difficult to determine its color mechanism. The FDTD (Finite-Difference Time-Domain) simulation method can help us to understand the mechanism responsible for structural color on butterfly's wing. It inspires us to obtain tunable structural color by adjusting the dimension of the photonic crystal structure. Consequently, the 2D photonic-crystal model can be used to predict the butterfly's color and the reflectance spectrum. Finally, the concave multilayer replica of Papilio blumei butterflies were successfully fabricated mainly by the following three steps: polystyrene spheres self-assembly, electron-beam gun deposition and inductively coupled plasma etching. The concavities array of Papilio blumei butterflies was made from alternating high and low refractive indices multilayer stack (tantalum pentoxide and silicon dioxide). Therefore, the mimic structure, iridescence color of Papilio blumei butterfly has been manufactured and analysed.

並列關鍵字

butterfly ； structural color ； iridescent ； photonic crystal ； biomimic

國際替代計量

藍尾翠鳳蝶（Papilio blumei）結構色與仿生技術之研究

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