近場電紡織製作全纖維式發電系統 作為行動穿戴裝置電源

NEFS fiber-base generator for wearable and mobile electronics.

陳柏州(Po-chou Chen)

指導教授 ： 傅尹坤

國立中央大學/工學院/機械工程學系/碩士(2014年)

摘要

本論文利用近場電紡織技術(near-field electrospinning，NFES)，研究壓電奈米纖維並且製作成奈米發電機(nanogenerator，NG)，主要重點為(1)利用近場電紡織技術大面積排列壓電奈米纖維製造奈米發電機，(2)奈米發電機作為自供電式形變感測器，(3)奈米發電機作為行動穿戴裝置電源。以直寫(Direct-write)方式將壓電高分子材料聚偏氟乙烯(polyvinylidene fluoride，PVDF)利用NFES技術將奈米纖維(nanofibers，NFs)大面積排列在可撓性基底上製作成奈米發電機，並且進行一系列訊號量測與驗證。我們將NG固定於人體關節上運用人體關節移動使NG有訊號產生。接著，我們使用改良式基底，成功製作出靈敏度更優良的NG，另外，為了使NG輸出增加，我們將NG以疊加方式嘗試提高輸出，成功將電壓輸出提高到20V，由於可撓性佳的基底加上厚度薄，我們將NG固定在人體關節上使NG可以隨人體擺動轉換成電力作為行動穿戴裝置電源。

關鍵字：近場電紡織技術、壓電材料、奈米纖維、奈米發電機、行動穿戴裝置電源

關鍵字

近場電紡織技術 ； 壓電材料 ； 奈米纖維 ； 奈米發電機 ； 行動穿戴裝置電源

並列摘要

This thesis mainly research on fabrication of nanogenerator, piezoelectric technology and application in electrospinning. The focus of the study is (1) Massively parallel aligned nanofibers-based nanogenerator deposited via near-field electrospinning, (2) A flexible, self-powered deformation sensor based on nanogenerator. (3) NEFS fiber-base generator for wearable and mobile electronics, we demonstrate a direct-write, in-situ poled polyvinylidene fluoride (PVDF) nanofiber arrays that could functions as a self-powered active deformation sensor. The fabricated hybrid structure of sensor/nanogenerator (NG) is realized via direct deposition of near-field electrospun nanofibers on Cu-foil electrode of thickness ~200 μm and fully encapsulated on a flexible substrate. Capable of integrating into fabric such as a moving human joints due to high flexibility and excellent conformability, the nanofiber-based device can serve as an active deformation sensor under ambient wind-speed and the feasibility of efficiently convert the flutter motion into electricity are also demonstrated. This low-cost, simple structure, high sensitivity and good environment-friendly nanofibers is a very promising material/technology as practical energy harvesting devices and self-powered sensors and capable of scavenging very small wind power or mechanical induced vibration.

Keywords: Near-field electrospinning (NFES)、Piezoelectric material、Nanofiber(NFs)、Nanogenerator(NG)、wearable、mobile electronics.

並列關鍵字

near-field electrospinning ； Piezoelectric materials ； nanofibers ； nanogenerator ； wearable and mobile electronics

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