本論文首先利用Surface Evolver程式及力平衡分析，探討水液滴於粗糙表面之懸浮與塌陷情形，並與Extrand(2002)之實驗結果相互驗證。接著，以類似蓮花表面突狀組織之粗糙面為對象，分析不同尺寸水液滴(直徑在 區間)懸浮時之最大高度與直徑。結果顯示，當水液滴直徑在 區間時，直徑越大，重力對於水液滴最大高度之影響越顯著，唯對於最大直徑幾無影響。而當水液滴直徑在 以下時，水液滴之重力效應與表面張力相較，則可忽略。
本論文亦探討了兩水液滴在不同性質平滑固體表面上之結合情形，並進而修正Narhe等人(2004)實驗數據之誤植。對於具不同表面張力液滴在平滑固體表面之結合行為，亦予研討。
本論文之研究成果將可供奈微米及生物科技相關研究之參考。

This work is first devoted to the suspension or collapse study of water droplet on rough surface based on the equilibrium of force using Surface Evolver program. The results are compared with the experiment by Extrand (2002). Then, taking similar convex epidermal cells of lotus as rough surface, different sizes of suspended water droplets (with diameter between ) are analyzed for calculating their maximum height and diameter. The results show that, when the diameter of water droplets is from to , more distinct influence of gravity on the maximum height of water droplets will be found as the diameter gets larger, but the effect on the maximum diameter can be ignored. However, when the diameter of water droplets is smaller than , the gravity effect is negligible compared with that of surface tension.
This work also focuses on the study of the coalescence of two water droplets on different smooth surfaces. The mistake of experiment data made by Narhe et al.(2004) is corrected. The coalescence of two droplets with different surface tensions on smooth surface is also explored.
The results achieved in this work will be helpful for the relevant researches of nano/micro technology and biotechnology.

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