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Title: | 可饒式壓阻壓力感測器應用於人體動作辨識 Flexible Human Motion Recognition Device by Piezoresistive Paper-Polymer-Metal Composites |
Authors: | Yi-Jie Tsai 蔡沂桀 |
Advisor: | 廖尉斯(Wei-Ssu Liao) |
Keyword: | 壓力感測器,導電高分子,奈米粒子,紙,穿戴式裝置, Pressure sensor,conductive polymer,nanoparticle,filter paper,wearable device, |
Publication Year : | 2018 |
Degree: | 碩士 |
Abstract: | 可饒式的壓力感測器在近年來吸引了許多團隊投入研究,此壓力感測器可以應用於各種穿戴裝置如呼吸檢測,脈搏量測、運動偵測以及人機介面連結。隨著近幾年的蓬勃發展,壓力感測器面臨了製作材料成本、製作難度、訊號擷取、靈敏度改善、偵測範圍以及操作難度的挑戰。在此,我們透過一個簡單,低成本,且可大量製作的方法,結合二氧乙基噻吩導電高分子及銀奈米於濾紙基材上去得到一個可饒式及可穿戴的壓力感測器。首先,利用滴落塗布法將導電高分子塗布在濾紙上,接著原位將銀奈米還原在濾紙表面,最後使用聚丙烯膜透過護貝過程將此裝置封裝,即可以得到穩定的壓力感測器。合成銀奈米於二氧乙基噻吩表面上不但可以增加此感測器的導電性以降低裝置的消耗功率,同時也可以增加紙表面的粗糙度去增加裝置的靈敏度。調控不同的紙張層數以及銀奈米的合成時間,再配合最佳化的護貝封裝方法,我們可以得到靈敏度佳以及穩定的壓力感測器。我們提出的壓力感測器具有高靈敏度、廣偵測範圍、高續航力、且低消耗功率的特性,期待可以在未來應用在各種診斷穿戴裝置以及人機介面連結。 Flexible pressure sensors have attracted increasing interest due to their potential application on wearable sensing devices for respiratory detection, pulse measurement, sports monitoring, and other human-machine interface connections. Along with bloomsome developments in recent years, challenges such as material cost, fabrication robustness, signal transduction, sensitivity improvement, detection range, and operation convenience still need to be overcome. Herein, a flexible and wearable pressure sensing device fabricated by integrating conductive polymer poly(3,4-ethylenedioxythiophene) (PEDOT), silver nanoparticles (Ag NPs), and filter paper through a simple, low-cost, and scalable approach is introduced. A “drop-casting” process followed by in situ silver reduction is used to generate Ag NPs-PEDOT paper composite materials, and the sensing device integration is achieved through material lamination with polypropylene polymer films. Filter paper acts as the solid support for PEDOT polymer, and the incorporation of Ag NPs onto PEDOT enhances polymer’s conductivity and provides a rougher surface. Sandwiching and laminating composite material layers with two thermoplastic polypropylene films lead to robust integration of sensing devices, where assembling four layers of composite materials gives the best sensitivity toward applied pressure. This practical pressure sensing device entails properties of high sensitivity of 0.12 kPa-1, broad detecting range of up to 480 kPa, high durability over 100 cycles, and an ultralow energy consumption level of 10-5 W, acting as a promising candidate for point of care, wearable electronic devices, and human machine interface connection. |
URI: | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/77514 |
DOI: | 10.6342/NTU201803402 |
Fulltext Rights: | 未授權 |
Appears in Collections: | 化學系 |
Files in This Item:
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ntu-107-R05223175-1.pdf Restricted Access | 1.65 MB | Adobe PDF |
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