微波輔助法製成石墨烯於可撓式複合材料及其可穿戴式傳感器之研究與應用

Abstract

我們提出一個在未來很有前景的方法，利用低成本來大量製成石墨烯，在本論文中我們主要在探討以微波輔助法製成石墨烯於可饒性基板PDMS傳感器之研究，實驗共分三部分，第一部分，以不同參數的溶劑插層後使用微波輔助還原法來製備出石墨烯。第二部分，並以拉曼光譜(Raman)進行分析I2D/IG訊號比來判定石墨烯品質，經過一系列的測試我們發現在硫酸:硝酸鈉:去離子水比為35毫升:0.7毫克:5毫升有最佳的條件，I2D/IG訊號比為0.63。第三部分，藉由拉伸測試來量測應變傳感器進一步得到應變係數(gauge factor)，此係數可代表傳感器的靈敏度且應變量(strain)可達到30%，另外我們做了彎曲感測，使石墨烯在未來有更多更廣的應用可能性。傳感器基板我們選擇了聚二甲基矽氧烷(Polydimethylsiloxane,PDMS)，此材料具有疏水性、無毒、有彈性、透光性佳等，讓未來石墨烯應變傳感器的應用端可以往生醫，作為人體的感測器。

In this study, we use a low cost prodecure to make a large amount of graphene. we mainly discuss the microwave-assisted method for the production of graphene on a PDMS sensor. The experiment is divided into third parts. In the first part, the microwave-assisted reduction method was used to prepare graphene after solvent intercalation with different parameters. In the second part, the I2D/IG signal ratio was analyzed by Raman spectroscopy to determine the quality of graphene. After a series of tests, we found that the ratio of sulfuric acid : sodium nitrate : deionized water was 35 ml : 0.7 mg : 5 ml. In the third part, By straining test, we can get the gauge factor. The coefficient can represent the sensitivity of the sensor and the strain can reach 30%. In addition, we have performed bending sensing to make Graphene has more and more application in the future. We chose Polydimethylsiloxane (PDMS) as a sensor’s substract. This material is hydrophobic, non-toxic, elastic, and high transmission. The application of the sensor can be used in the human body.