超音波聚焦噴墨之能量驅動與分析研究

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姓名

鍾緯(Wei Chung) 查詢紙本館藏

畢業系所

光機電工程研究所

論文名稱

超音波聚焦噴墨之能量驅動與分析研究
(Study of Energy Driving and Analysis for Ultrasound Focusing Ejection)

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摘要(中)

超音波聚焦噴墨法是利用超音波聚焦透鏡，將超音波聲能匯聚於液面，使液體突破液面阻力而噴出墨滴的一種噴墨技術。由於不需要傳統噴墨法的噴孔設計，故可改善傳統噴墨法因噴孔所造成之噴墨缺點；但因為不需噴孔，墨滴規格預估更需針對輸入能量及各階段能量效率轉換進行探討。
　　本研究分別介紹超音波聚焦噴墨法之理論基礎及超音波聚焦噴墨模型，推導超音波聚焦噴墨模型中輸入能量之理論關係式，及估算超音波聚焦噴墨法之能量損耗效率。藉由設計及製作壓電共振頻率1MHz 之超音波聚焦噴墨裝置，和透過實驗初步驗證超音波聚焦噴墨模型和能量理論，用以作為在微尺寸之高頻共振超音波聚焦噴墨裝置設計之依據。

摘要(英)

Ultrasound-focusing ejection is an inkjet technology that uses ultrasound focusing lens to focus the ultrasonic energy in liquid surface and further eject droplets. Because the ultrasound-focusing ejection requires no traditional inkjet nozzle, it can soothe the drawbacks of traditional inkjet methods caused by jet nozzles. However, ejection without nozzle needs more for the input energy and energy efficiency in depth.
　　This thesis presents the fundamental theory about ultrasound-focusing ejection, and addresses the energy relationship, and derives its energy efficiency model. In this study, an ultrasonic focusing ejector of resonance frequency one-MHz is designed and constructed. Ultrasound-focusing ejection and energy efficiency model are verified by the experiments of one-MHz ejection device. This research can be useful in designing the ejection device of high frequency in micro size.

關鍵字(中)

★ 噴墨
★ 超音波

關鍵字(英)

★ ejection
★ acoustic

論文目次

摘要 I
ABSTRACT II
誌謝 III
目錄 IV
圖目錄 VI
表目錄 VIII
第一章緒論 1
1.1 研究背景與動機 1
1.2 文獻回顧 4
1.2.1 壓電材料原理 4
1.2.2 聚焦透鏡原理 5
1.2.3 聲能噴墨法 6
1.3 研究範疇 7
第二章理論基礎 8
2.1 超音波壓電換能器原理 8
2.1.1 壓電現象與壓電效應 8
2.1.2 壓電材料本構方程式 9
2.1.3 壓電共振關係式 11
2.1.4 壓電轉換效率 18
2.2 超音波聚焦透鏡原理 20
2.2.1 超音波透鏡簡介 20
2.2.2 繞射透鏡原理 23
2.2.3 超音波聚焦透鏡能量分布 25
2.3 聲能理論 29
2.3.1 聲場能量密度公式 29
2.3.2 驅動訊號 33
2.3.3 聲能傳遞消耗效率 35
第三章超音波聚焦噴墨控制分析 37
3.1 超音波聚焦噴墨理論 37
3.1.1 超音波聚焦噴墨模型 37
3.1.2 輸入電能 42
3.1.3 傳遞能量消耗效率整合 43
3.2 聚焦噴墨裝置設計 46
第四章超音波噴墨控制實驗 50
4.1 實驗架構 50
4.1.1 超音波聚焦噴墨裝置 51
4.1.2 量測系統 54
4.2 1MHz超音波聚焦噴墨裝置實驗 55
4.2.1 參數量測與設定 55
4.2.2 超音波聚焦噴墨實驗 58
4.2.3 數據整理 59
4.3 1MHz超音波聚焦噴墨裝置實驗結果與討論 62
4.3.1 實驗結果討論 62
4.3.2 實驗結論 65
第五章結論與未來展望 66
5.1結論 66
5.2未來展望 66
參　考　文　獻 67
附　　　錄 69

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指導教授

黃衍任、潘敏俊
(Yan-Ren Huang、Min-Chun Pan)

審核日期

2010-7-27

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