自然界中的蓮花葉面結構是由疏水性、柱狀微結構所組成，其接觸角約150°、滑動角約5°。該結構之結構強度低、大量複製困難，並受水柱沖擊後，會濕潤表面令表面失去自潔性的缺點。
本研究在於設計、分析與製造一具蓮花效應的創新微結構，其與自然者大不相同。創新結構可分為上與下兩層，下層為一封閉性的壁狀結構，使其內含不能橫向移動的空氣；上層則為開放性的橫條狀結構，使液滴接觸面積減少。該壁狀結構具一開孔角，便於轉印製造時的脫模。由實驗結果得知，壁狀結構之開孔角較大者，其疏水性較不良。而具反蓮花結構的聚二甲基矽氧烷(polydimethylsiloxane, PDMS)，其接觸角可達168°、滑動角約1°以及透光率70%，證實該結構之疏水性、自潔性與結構強度更優於自然者，同時亦具備量產與貼佈的便利性。
基於反蓮花結構下層的封閉特性，本篇論文提出空氣彈簧效應論點，實驗與分析結果驗證了該論點的存在性。此結構因具空氣彈簧的作用，大幅改善了大自然蓮花結構受水衝擊後因結構損壞失去自潔性的缺點。此外，吾人亦修正David Quéré的經驗式，以提高計算水滴在柱狀疏水結構之動態效應的正確性。

In nature, the surfaces of lotus leaves which consist of pillar structures with hydrophobic material have the contact angle 150° and sliding angle 5°. However, this kind of structures have some disadvantages, such as low structure strength and hard to replication. And it could be damaged by the high pressure droplet, the surface would be wetted and loss its ability of self-cleaning.
The thesis has designed and manufactured the innovative pattern, “negative lotus structure” which has lotus effect and differs from one in nature. This structure can be distinguished by two layers. One situates at the under layer is the mural structure with incline angle and sealed property that induces the air trapped in it. And another situates at the upper layer is the striped structure with opened property that reduces the contact area of the water drop. From the result of experiment, the mural structures with higher incline angle lead to lower hydrophobicity. The hydrophobic material PDMS with the designed surface has the contact angle 168°, the sliding angle 1°, and the transmittance 70%. It confirmed that the negative lotus structure had greater super- hydrophobicity, self-cleaning ability, and structure strength than nature one.
In view of sealed property of mural structure, we declare that the negative lotus structure has the air spring effect. Via the experiment and analysis results, we could confirm the existence of the air spring effect. In addition, the results which were caused by the effect differed from the formal papers. Therefore, we modify the empirical formula of David Quéré to enhance the applicability of the dynamic effect in pillar-like structures.

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