臺灣博碩士論文加值系統

近年來，可與人體直接互動的電子裝置興起，讓電子皮膚和穿戴式感應裝置的需求大幅增加，壓力感測是直觀人機介面的重要功能，以低成本、製程簡單的策略，製造出柔軟、可拉伸的高敏度壓力感測器是往後實務應用的關鍵。在此篇研究中，我們以靜電紡絲奈米纖維結合銀奈米顆粒，製作出三明治結構的電阻型壓力感測器，整套系統成本低廉、製程簡單；藉由調控電紡奈米纖維的參數，可達到最小低於0.2 kPa的感測靈敏度，導通電阻值達到10 Ω以下。並透過控制電紡奈米纖維的密度，得到數個不同範圍的壓力感測區間，在拉伸(應變ε=0.5)和彎折(曲率1/3mm-1) 的循環測試後，仍維持穩定的感測性能，本系統有良好的拉伸性、彎折性、可回復性、快速的反應時間、超高靈敏度與可微控感測區間的獨特特性，全織物型的精巧設計可以和貼身織物結合或直接與人體連結。我們已成功應用於智能開關和脈搏感測，智能開關與LED和衣物結合後，仍然可以維持其性能。脈搏感測可以即時監控正常成年人的心跳次數。未來可望廣泛應用和商業化在各種與人體互動的觸覺電子裝置上。

In recent years, the electronic devices contacting with humans directly has been gained popularity and lead to substantial increase in demand of electronic skins and wearable sensing devices. Tactile sensing has been increasingly important in human–computer interactions (HCI). The development of flexible, stretchable and highly sensitive pressure sensor with a low-cost and facile fabrication technique is critical for the practical application in the future. In this research, we presented a sandwich-structured resistive pressure sensor based on electrospun elastomeric nanofibers and silver nanoparticals by using a simple and low-cost process. Our pressure sensor enabled to detect below 0.2 KPa pressures and had an excellent electrical property below 10 Ω by regulating the parameters of electrospun nanofibers. The threshold of resistance switching range was tunable by modifying the density of electrospun dielectric layer. After stretching (strain ε = 0.5) and above bending (curvature 1/3mm-1) cycle testing, it was able to maintain sensing performance. The r showed good cycle stability and a short response time. Full fiber-based design can combine with clothes, or link with the human body directly. We have been successfully applied in intelligent switches and pulse sensing. We observed that intelligent switch combined with LED and clothes were still able to maintain the performance. Pulse sensing can monitor real-time beats of normal adults. We expect that fiber-based pressure sensor will be highly useful in the design of next generation electronic systems and commercialized in variety of the interactive tactile electronic devices.

中文摘要 i
Abstract iii
誌謝 v
目錄 vi
圖目錄 ix
第一章 緒論 1
1.1 前言 1
1.2 研究動機 2
第二章 文獻回顧 3
2.1 電子皮膚-觸覺感壓裝置 3
2.1.1 電容式的壓力感測器 4
2.1.2 電阻式的壓力感測器 7
2.2 智能紡織品 9
2.2.1 觸覺感測手套 10
2.2.2 電阻式壓力感測織物 11
2.2.3 電容式壓力感測織物 12
2.3 導電纖維 13
2.3.1 彈性纖維和銀奈米顆粒的複合材料導電纖維 14
2.3.2 可噴塗的彈性纖維導體 15
2.3.3 以導電纖維為基礎的壓力感測器 16
2.4 靜電紡絲技術 17
2.4.1 靜電紡絲之簡介 17
2.4.2 靜電紡絲之原理與獨特性質 19
2.4.3 本實驗室之靜電紡絲領域探討 23
第三章 實驗步驟 26
3.1 實驗材料 26
3.2 實驗設備 27
3.3 實驗流程 28
3.3.1 製備織物型柔性導電膜 28
3.3.2 製備全織物型壓力感測器 28
3.3.3 靜電紡絲製程最佳化 29
3.3.4 彈性奈米纖維膜結構型態的探討 29
3.3.5 壓力感測器的感測特性與應用 29
3.3.6 實驗流程圖 30
3.4 測試與分析儀器 31
3.4.1 場發型掃描電子顯微鏡(FE-SEM) 31
3.4.2 X光繞射分析儀(XRD) 31
3.4.3 能量散佈分析儀(EDS) 32
3.4.4 紫外線/可見光分光光譜儀(UV) 33
3.4.5 動態熱機械分析儀(DMA) 33
3.4.6 四點探針量測儀 34
第四章 結果與討論 35
4.1 場發型掃描電子顯微鏡(FE-SEM) 35
4.1.1 靜電紡絲奈米纖維型態分析 35
4.1.2 全織物型壓力感測器纖維型態分析 37
4.2 紫外線/可見光分光光譜儀(UV) 41
4.3 X光繞射分析儀(XRD) 42
4.4 能量散佈分析儀(EDS) 43
4.5 動態熱機械分析儀(DMA) 44
4.6 四點探針量測儀 45
4.6.1 靈敏度 45
4.6.2 重複性 49
4.6.3 彎折性 50
4.6.4 拉伸性 52
4.6.5 反應時間 56
4.7 應用 57
4.7.1 智能開關 57
4.7.2 脈搏感測 60
第五章 結論 62
第六章 參考文獻 63

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