本文之研究目的是以自行發展之雷射輔助電鍍法製備微奈米銅粒子，針對不同條件下實驗結果進行觀察比較。在實驗方面，第一部分採用自行組裝之電化學裝置配合連續式及Q-switched 雷射在不鏽鋼試片上進行生成，並使用光學金相顯微鏡及掃描式電子顯微鏡觀察其結果。第二部分針對雷射通過電解液之吸收率以及在陰極極板上所造成的溫升效應進行量測，以自製實驗裝置配合雷射能量計以及熱電偶量測雷射通過電解液之流場後所剩餘的能量以及在陰極版所造成之最高溫度。在數值分析方面使用計算流體力學軟體模擬所使用之噴流流場以及其同軸雷射，探討流場之速度及壓力等情形以及雷射所造成之溫度場。本研究中以高斯能量分布之壁面熱源進行雷射加熱效應的計算，且不考慮電解液所吸收之雷射能量，計算結果和實驗所測得的結果具有一致性。本研究證明了使用雷射輔助電鍍法不添加穩定劑的情況下生成微奈米銅粒子之可行性，所得之實驗及理論分析結果可作為後續研究之基礎。

This study investigates the micro/nano-scale copper particles generated by the laser-assisted electroplating method, and the results have been examined at various experimental conditions.

In the first part of experiment, an electrochemical jet nozzle was made to adopt with continuous-wave and Q-switched Nd:YAG laser to generate micro/nano-scale copper particles. The results were observed by optical and scanning electron microscope. In the second part, the laser energy absorbed by electrolyte and the temperature rise caused by laser radiation on the electrode had been measured.

In the numerical analysis, the flow and temperature fields of the impinging jet of the laser nozzle were simulated simultaneously by a computational fluid dynamic software. A wall heat flux of Gaussian distribution energy profile was used to calculate the flow temperature due to the laser radiation on cathode and the energy absorption in electrolyte was not considered in this study. The results show a good agreement with the experiment. The innovative technique of the proposed device has the capability of generating micro/nano-scale particles and it opens a door of the laser applications for the future.

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