本文之主旨在於以實驗方式詳細探討微尺度之單一及雙爆炸式熱氣泡之成核溫度與成核機制、氣泡成長與縮小過程中外觀尺寸之定性及定量觀測、氣泡成長週期中周圍速度場之量測並與數值模擬結果相比較，以期對微尺度爆炸式熱氣泡成長過程之物理現象有更深入的瞭解。依據微尺度爆炸式熱氣泡之特性，本研究應用了高速、非侵入式之微流場觀測方法，如：整合平均相位法之高速攝影技術、微質點影像測速儀與內含顏色時間碼之微質點追跡儀等，完整觀測微氣泡於成長週期之外觀及周圍流場之變化，更延伸應用於H型微快速混合器之流場觀測。於單一微熱氣泡實驗中，微加熱器之尺寸各為30x30um2, 30x60um2, 與 20x60um2，各操作於熱通率1.2, 1.4, and 1.6 GW/m2下，其加熱脈衝長度為4us；於雙微熱氣泡之實驗中，雙微加熱器之尺寸均為30x60um2，相距25 至125um，各操作於熱通率1.61至2.14GW/m2 間,並調整加熱脈衝長度使總輸入能量相同。氣泡成長過程之外觀與周圍速度場之實驗與模擬結果相當一致。當兩微加熱器之間距越近，壓力場之變化對氣泡外觀、成長速度、推力等影響越明顯。應用微熱氣泡間之相互影響，可以改變氣泡成長曲線，用以減少衛星液滴，提升微液滴噴射之品質。

Bubble dynamics including the growth and collapse process of explosive micro thermal single and dual bubbles are investigated experimentally and are compared with simulation results in details. For the characteristic of high speed and micro scale in micro explosive bubbles growth process, there are non-intrusive flow visualization techniques are demonstrated and developed in the study. The high speed photography and micro PIV coupling with the phase averaged techniques are applied for the sequential bubble growth/collapse process and induced flow fields respectively. For the interesting of micro flow visualization techniques, the micro PTV with embedded color time code is developed and successfully applied in the flow field visualization of H-type rapid micro mixer. The single heater with size in 30x30um2, 30x60um2, and 20x60um2 is applied 4us heat pulse with heat fluxes of 1.2, 1.4, and 1.6 GW/m2 separately for undergone the nucleate boiling. Dual bubbles are generated on two microheaters of heating areas of 30umx60um each with supplied heat flux of 1.61 to 2.14 GW/m2 and the heaters are separated by different distances ranging from 25 to 125um. Excellent agreements on the bubble shape variations and the induced flowfields from measurements and computations are achieved in details and the strong bubble-bubble interactions are illustrated in terms of bubble appearance, flowfields and pressure fields as the heaters are getting closer. Droplet ejected by dual bubbles in an animated inkjet system is demonstrated with droplet quality of no satellites.

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