本研究探討近年來最新的水珠生電DEG(droplet-based electricity generator)之物理現象。實驗會使用PSPICE解釋與模擬水滴接收到能量的暫態響應。模擬參數中需要輸入源、對應的電子元件及負載。
本研究觀察到水滴與薄膜摩擦時，薄膜與水滴面積的交集有變化，並設計雙發光二極體通道來觀察水滴形狀變化與輸出電壓的關係，依據薄膜與水滴面積的交集大小變化建立輸入源。藉由獨立出DEG各結構，探討各結構等效電子元件。在大面積雙電極情況下，結構中的電子元件可組合成等效電路圖進行擬合。DEG結構包括薄膜、上電極與下電極，將單上電極、上下電極交集與單下電極這三種結構裝置獨立出來接收電能，以PSPICE分析擬合不同響應對應傳統電路元件的角色，結果顯示單上電極會與薄膜形成電容，上下電極交集會形成電容，而單下電極也會與薄膜形成電容。DEG產生的電訊號大小則受液體種類、上電極、上下電極交集與下電極影響。
本研究結果完整解釋DEG有上電容組及下電容組，上電容組包括上電極與薄膜形成電容並聯上下電極交集的電容，上電容組由上下電極交集的電容主導電路行為；下電容組包括下電極與薄膜形成電容並聯水滴與下電極交集的電容。在電容組串連的情況下，較小的電容組主導響應，故上電容組及下電容組由上電容組主導電路行為。最後探討DEG時，電路模型使用不同的電阻作為負載，驗證模型的正確性，另使用添加3.5w.tNaCl水溶液、去離子水DI與無離子矽油作為滴落液體，觀察FEP摩擦後駐極現象。
研究應用於大面積雙電極與太陽能結合，考量到不影響太陽能的發電效率，進行薄膜透明度實驗，並挑選穿透率較好的薄膜覆蓋在太陽能板上，一端與太陽能的電極作為共用端，經過橋式整流後，將DEG能量轉為直流脈動電流對電容充電儲能。在電路設計方面多添加一個二極體，以達此兩種再生能源互相疊加的效果。

The study observes changes in the intersection of the film and water droplet areas when the droplet rubs against the film. Dual light-emitting diode (LED) channels are designed to observe the relationship between droplet shape changes and output voltage. The input source is established based on the variation in the intersection size between the film and water droplet areas. By isolating the different structures of the DEG, the study gets the equivalent electronic components of each structure. Under the condition of a large electrode area, the electronic components in the structure can be combined into an equivalent circuit for fitting purposes.
The DEG structure includes a film, upper electrode, and lower electrode. Three types of devices, namely single upper electrode, intersection of upper and lower electrodes, and single lower electrode, are separated to receive electrical energy. PSPICE analysis is used to fit the different responses to the roles of circuit components. The results show that a single upper electrode forms a capacitor with the film, the intersection of upper and lower electrode forms a capacitor, and a single lower electrode also forms a capacitor with the film. The generated electrical signal of the DEG is influenced by the liquid type, upper electrode, intersection of upper and lower electrodes, and lower electrode.
The study comprehensively explains that the DEG consists of an upper capacitance group and a lower capacitance group. The upper capacitance group includes a capacitor formed by the upper electrode and the film in parallel with the capacitor at the intersection of the upper and lower electrodes. The upper capacitance group is dominated by the capacitor at the intersection of the upper and lower electrodes. The lower capacitance group includes a capacitor formed by the lower electrode and the film in parallel with the capacitor at the intersection of the water droplet and the lower electrode. When the capacitance groups are connected in series, the response is dominated by the smaller capacitance group. Therefore, the upper capacitance group and the lower capacitance group are dominated by the upper capacitance group in terms of circuit behavior.
Finally, the study examines the DEG using different resistors as loads to verify the accuracy of the model. Droplets of 3.5w.t NaCl water solution, deionized water (DI), and ion-free silicone oil are used as the dripping liquids to observe the friction-induced electrostatic phenomenon on FEP.
The research is applied to the integration of large-area dual electrodes with solar energy. Considering the preservation of solar energy generation efficiency, experiments on the transparency of films are conducted. Films with better transmittance are selected to cover solar panels. One end of the film is shared with the solar panel electrode. After bridge rectification, the DEG energy is converted into pulsating direct current to charge and store energy in capacitors. In terms of circuit design, an additional diode is added to achieve the superposition of these two renewable energy sources.

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