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題 名 | 壁虎足墊階層式表面結構之機敏黏附性及其工程應用=Smart Adhesion from Hierarchical Surface Construction in Gecko's Foot Pads and Its Engineering Applications |
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作 者 | 方治國; | 書刊名 | 宜蘭大學工程學刊 |
卷 期 | 11 2015.12[民104.12] |
頁 次 | 頁63-83 |
分類號 | 368 |
關鍵詞 | 壁虎; 黏附性; 棘毛; 匙突; 仿生學; Gecko; Adhesion; Seta; Spatula; Biomimetics; |
語 文 | 中文(Chinese) |
中文摘要 | 本文探討壁虎特有的結構及功能:壁虎擁有非凡的黏著能力使其能夠在牆壁上攀爬、在天花板甚至光滑如玻璃、瓷磚上倒立飛奔(以超過1 m/s的速度)、以及摔落時迅速抓住牆壁而不致摔傷。其足墊複雜之多毛狀黏附結構賦予其機敏黏附性–能黏附於各種光滑或粗糙表面,並能迅速地將腳抽離。足部黏墊具有緻密的微米級棘毛(setae),這種類似頭髮的棘毛由硬挺之疏水性角質構成,成一角度排列成陣列。每根棘毛末梢又分叉成數百根奈米級之匙突(spatulae),匙突末端的扁平結構使其與物體表面能緊密接觸。此種由棘毛及匙突所構成之階層式(hierarchical)表面結構能適應各種物體表面而產生很大的實接觸面積,因而使黏附效果大為提高。本文根據壁虎足墊階層式結構,針對其黏附機制、毛狀黏附系統、棘毛分裂效果、粗糙面之黏附、材料性質、行動模式、及自潔作用幾個層面考量分析。最後探討壁虎足墊機敏黏附性之仿生工程應用。 |
英文摘要 | This article investigates the special structures and functionalities in geckos’ feet. Geckos possess marvelous abilities of adhesion that enable them to climb on walls, to run upside down rapidly (at speeds of over 1 m/s) on ceilings, even on smooth glass and tiles, and to arrest their falls. The complex hairy attachment structures in the foot pads enable the smart adhesion – the ability to stick to different smooth and rough surfaces and unstick its feet quickly. The attachment pads have dense micro-scale setae. The hair-like setae formed from stiff, hydrophobic keratin are arranged in angled arrays. Each seta branches at its distal end into hundreds of nano-scale spatulae. Each spatula terminates in a flattened structure, making intimate contact with the substrate. This hierarchical surface construction, composed of setae and speculae, gives geckos the adaptability to create a large real area of contact with surfaces, and thus significantly enhance the adhesion strength. biomimetics. Based on this hierarchical structure, this article studies the adhesion mechanism, hairy attachment system, effects of seta-branching, adhesion to rough surface, material properties, moving mode, and self-cleaning of gecko’s foot pads. Finally, the applications of smart adhesion to biomimetic engineering are investigated. |
本系統中英文摘要資訊取自各篇刊載內容。