本研究主要利用壓電噴墨元件開發超微量點膠技術，流體的轉移行為受到不同的參數所影響，包含脈衝波型，點膠製程高度以及潤濕性等。本研究使用甘油水溶做為工作流體以進行轉移製程開發，其中流體轉移過程中的行為，包括液體拉伸，液柱接觸到基板的過程以及殘留液體縮至點膠口內等複雜的形態，都藉由高速攝影機觀察。本研究亦採用Flow-3D®套裝軟體進行數值模擬並結合實驗結果進行驗證，針對不同點膠口與基板間距對轉移行為的影響進行探討。漿料與基板接觸面的潤濕性對轉移行為的影響亦被納入探討。
由實驗結果可以發現，透過控制點膠口與基板的間距，可獲得小於點膠口直徑 (50 μm) 的膠點。特別的是若液柱長度為109 μm時將點膠口與基板間距控制在50-70 μm則直徑小於34 μm的膠點可輕易獲得。而潤濕性對流體轉移量在點膠製程間距小於70 μm時有顯著的影響，其結果顯示膠點大小隨潤濕性變差而降低。亦透過實驗設計在多次點膠實驗中發現，即使在最佳的潤濕條件下，若點膠製程間距低於28 μm的情況下將不會進行轉移。

The dynamics of micro dot formation in a piezoelectric dispensing mechanism is presented in this study. Aqueous glycerol solution as test fluid is employed to conduct a new dispensing process. A dot diameter was small than orifice diameter of 50 μm by the liquid column extruding to 110 μm. The complex morphologies of fluid transfer behavior during dot formation, including stretching of liquid, liquid column contacting on the target and residue liquid contracted into dispenser, are observed by high speed camera. A minimum dot diameter of 21 μm could easily achieved by reducing the distance between orifice and substrate. Moreover, the mechanisms of piezoelectric dispensing will also be discussed in this study.

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