3D列印近年發展一日千里，其研發周期短、高度客製化、成本低廉以及高品質的特性已為創客文化帶來新的革命，如今隨著各項專利陸續到期，3D列印廣泛受到學術界和業界的關注，開始投入資源在這項新興技術上。本研究透過選用特定丙烯酸酯單體以及寡聚體，隨著調控其中比例，配置出一款具備拉伸性、回彈性的樹脂，接著添加石墨烯使彈性光固化樹脂具備導電性並提升其柔韌性，並憑藉光固化3D列印優勢，印製各種具有表面微針結構之樣品，最後成功應用於感測人體訊號之元件上。為了改善石墨烯易於傾向團聚的特性，使用兩種方法將其進行改質，分別為添加苯乙烯馬來酸酐以其上苯環與石墨烯產生π-π物理吸附之特性以及添加聚醚胺可與石墨烯產生空間位阻之特性來進行比較，接著也進行將苯乙烯馬來酸酐與聚醚胺接枝，找出具有最佳分散性之種類和比例，與光固化樹脂進行混合，製成光固化樹脂/石墨烯的奈米複合材料，並隨著固含量的添加，取得最佳導電性能及機械強度的比例。最後，印製有別於傳統網版印刷之平面底板，實驗中探討不同長徑比、不同間隙之表面微針結構對於接觸皮膚之差異，應用於量測人體心電圖(ECG)以及肌電圖(EMG)的訊號，成功將3D列印高度客製化且可印製多元複雜結構之特性與監控人體生理狀態的智慧衣作嶄新的連結。

3D printing has developed abstract rapidly in recent years. Its short research cycle, high degree of customization, low cost, and high quality have brought a new revolution to the maker culture. Now, as various patents have expired, 3D printing has been widely accepted the attention of academia and industry which have invested resources in this emerging technology. In this study, by selecting and adjusting the ratio of specific acrylate monomers and oligomers, a resin with stretchability and elasticity was configured, and then graphene was added to make the elastic photo-curing resin conductive and also improve its flexibility. With the advantages of photo-curing 3D printing, various samples with surface micro-needle structure were printed, and finally successfully applied to components that sense human signals. In order to improve the tendency of graphene which tend to agglomerate, two methods are used to modify it. They are the addition of styrene maleic anhydride to produce π-π physical adsorption on the benzene ring with graphene, and the addition of polyetheramine can produce the steric hindrance characteristics of graphene. Try to find the type and the ratio with the best dispensability and mix it with the photo-curing resin to make photo-curing resin/graphene nanocomposite, and therefore get the best electrical conductivity and mechanical strength. Finally, different from traditional screen printing which prints flat plate, in this experiment, we design surface microneedle structures with different aspect ratios and different gaps contacting with the skin, and it can be used to measure human electrocardiography(ECG) and electromyogram(EMG) signals. In the end, we successfully connect 3D printing with highly customized and printable features of multiple complex structures and smart clothing that monitors the physiological state of the human body.

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