小型且廉價的功能微電子產品擁有從根本上改變我們生活的潛力。但是這些產品需要一種新的能量來源來實現這一願景。而可以從周遭環境獲得能量的奈米微型能量擷取器正是我們所需要的，相比於依賴電池等能量儲存裝置，微型能量擷取器能夠讓微電子產品有更少的限制以及更好的表現。在這裡我們介紹一種新方法來製造石墨烯微機電能量擷取器。這種能量擷取器是利用裝有高分子駐極體的可變電容之變型產生電容值的變化，並從中擷取彎曲前後的系統能量差來進行發電。我們還利用一種「邊際模型」來提高系統能量差，這種模型結構可以簡單的用石墨烯碎片以及超音波噴塗系統來製造。我們預期石墨烯微機電能量擷取器相比於過去的可變電容式能量擷取器能夠有更好的表現，像是更高的效率與光穿透率、更好的彎曲承受能力、以及更低的成本。我們提出的方法能夠因此從我們的周遭之中開啟電子設備的整合的下一步。

Autonomous small and cheap functional microelectronic devices have potential to fundamentally transform our daily life. A new type of power source, is needed, however, to realize this vision. Nano-mechanical generators can harvest energy from the surrounding which is better than relying on stored energy. Here a novel approach to fabricate nano-generators based on graphene thin films are presented. The mechanism relies on capacitance changes upon deformation of an electrode on an electret, The energy difference before and after bending can be converted into usable energy. We investigate two different harvester structures, traditional homogenous and “edge mode” generators. We show that these structures are easy to establish using graphene flakes and ultrasonic spray system. Graphene based nano-generators are expected to exhibit a wide variety of improvements over these variable capacitance generators such as high efficiency, transparency, mechanical flexibility, and low fabrication cost. The proposed approach could therefore enable the next step in the integration of electronics in our environment.

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