本論文創新以紙作為基板，透過網印技術(Screen Printing)將金屬電極直接印製於紙基板之上，並設計不同電極參數與壓電奈米纖維緊密的貼合，製作出可撓式的自電式紙鍵盤。其中壓電材料是由近場式靜電紡絲製程技術(Near-Field Electrospinning, NFES)所製作出的多分子聚合物聚偏氟乙烯(Polyvinylidene fluoride, PVDF)作為壓電纖維之原料，由於壓電纖維屬於一維度的材料，故其材料應變為線軸方向，因此本文採用d33工作模式發展自電式感測元件。接著針對自電式感測元件的電極做圖形參數的優化設計，電極圖形設計參數包括電極的形式、電極的對數、電極的寬度及電極的間距，藉由電極參數的優化設計來提升自電式感測元件之壓電轉換效率。依據實驗顯示以壓電纖維整合5對並聯電極，最高峰值電壓達159.2mV，高於傳統電極設計所輸出電壓值的3.7倍，而所設計之5對串聯電極為最佳電極圖形之設計，其輸出電壓值更高達431.8 mV，驗證此電極設計確實能有效提升感測元件之靈敏度。最後本論文以創新整合紙基板與壓電纖維、並透過電極優化設計完成自電式紙鍵盤研發，未來可將此概念應用於便利、環保及可拋式3C產品或穿戴式商品上，無須透過廢棄物回收，焚燒即可分解實現綠能之理念。

In this paper, we fabricating flexible electronic circuits on paper and combine PVDF(Polyvinylidene fluoride) piezoelectric fiber using NFES(Near-field Electrospinning) to develop the flexible piezoelectric sensing element. We uncommonly adopt screen-printing technology to produce the electrodes, and design its d33 mode patterns. The experimental results show that the type of electrode is key to enhance the output voltage. The parallel type can induce an average of 159.2 mV positive voltage under the tapping experiment. Compared to the normal series type has a 3.7 times upgrade And five pairs of the series type for the best design of the electrode pattern, the output voltage as high as 431.8 mV. however, paper can be folded and creased (repeatedly), shaped to form threedimensional structures, trimmed using scissors and disposed of by incineration. Paper-based electronic circuits are thin and lightweight ; they should be useful for applications in consumer electronics , for disposable systems in wearable sensors. Finally, we design the prototype of the Self-powered Paper Keyboard and evaluate its feasibility.

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