| 摘要: | 近十年來，由於IC科技的快速發展，人們對於可攜式資訊的追求越來越強烈，如此一來，具備輕、薄、耐摔甚至可捲撓等特性的電子產品，即軟性電子產品。正如2007年的Organic Electronic Conference (OEC 2007)會議所提出的未來市場趨勢的預測，及IDTechEx所指出，可撓式感測器將是未來幾年開發與發展重點。 可撓式感測元件的開發包含兩大關鍵因素，第一為開發以室溫、簡單、低成本的製膜技術，製備結構穩定、均勻的高靈敏性薄膜材料；第二為對不耐溫的塑膠基板必須搭配在室溫下即具有足夠的感測特性的感測材料。層接式(Layer-by-layer, LBL)自組裝成膜技術，是利用物種帶正、負電荷的性質，經由靜電力互相吸引而自組合，形成多層聚電解質的堆積結構而製成薄膜。此技術具有簡單、室溫、沒有成長膜厚的限制、不需要複雜的設備及穩定性高等優點。奈米材料如奈米碳管，具有高表面積、高表面能量之特性，對化學物質具有高吸附能力與高化學結合能力之特性。另外導電性高分子為主材的奈米複合感測材料具可在室溫下可感測特性之優點。因此本計畫的全程目標的前半為進一步修飾奈米碳管，在奈米碳管上直接成長Pd、Pt、Au等再以層接式自組裝成膜技術，開發室溫型可撓式氫氣感測器；及開發以層接式自組裝成膜技術製備導電性高分子為主材的室溫型奈米感測材料之製備技術，開發各種節能型可撓式化學感測器。 目前對於各種不同基質中之不同污染的偵測及分析大都採用儀器偵測，如原子/分子吸收光譜、原子/分子之激發螢光光譜及氣相層析是化學實驗室和品管檢驗實驗室最常用的氣體分析設備。這些儀器設備具有高準確度、高靈敏度與低偵測極限的優點。但是它們因有體積龐大不易攜帶、耗電性高、儀器構造複雜及價格昂貴等缺點，在應用上受到極大的限制，因此簡易及節能智慧化感測系統的開發便成為一項極有價值的工作。本計畫的後半則為以之前所建立的硬式基板型化學感測器技術及感測模組基礎下，並加裝太陽能板至之前所開發的溫、濕度感測模組，並且搭配辯識軟體提高感測系統的及時偵測能力，製成節能型的多功能之感測模組。最後應用於現場即時偵測，再修正感測模組，予以最佳化。
In the past decade, the fast growing IC technology has taken us toward a new digital age, where digital products with wireless functions have gradually become part of our daily life. Therefore, the flexible electronics have attracted more and more attentions as one of the key technologies in the development roadmap. The Organic Electronics Conference 2007 and IDTechEx have reported correctly that developing trends of flexible sensors combined with wireless and RFID system in the future. Two key techniques are important for fabrication of flexible chemical sensors. First, the fabrication of sensing film must included simplicity, inexpensiveness, low temperature of deposition, controllability of the thickness from the nanometer to the micrometer scale, and the lack of a need for any complex equipment. Second, the high sensitivity materials and could work at room temperature, such as carbon nanotubes (CNTs) and conducting polymers. Based on green energy, in this study, we will propose to develop the fabrication technique of low power consumption flexible chemical sensors based CNTs modified with Pd, Pt and Au and conducting polymers based thin films by LBL self-assembly. Various kinds of human activities have produced a large number of organic or inorganic substances, and constant entering it in the surrounding environment, has caused the serious injury to the environment. The atom / molecule spectrometry was mostly adopted to detect the pollutants in different matrix in the analytical chemical laboratory. These instruments have high accuracy, sensitivity and low detect limit. However, they have bulky difficult carrying, high power consumption, complicated instrument structure and high cost. It is extremely valuable job to develop the detecting device of simple, easy and low power consumption gas sensor system. In this study, we will develop low power consumption portable multi-functional sensing system combined with solar cell. The Fast Fourier Transformation (FFT) method will be used to improve the recognition of gas sensing for real-time detection in industry application. |
