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請使用永久網址來引用或連結此文件:
https://irlib.pccu.edu.tw/handle/987654321/20871
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| 題名: | The Effect of the Type of Polycation Used in Mica Nanocomposite Thin Films Prepared by Layer-by-Layer Technique on Low-Humidity Sensing |
| 作者: | Su, PG (Su, Pi-Guey)
Shie, WC (Shie, Wei-Chen) |
| 貢獻者: | 化材系 |
| 關鍵詞: | FIELD-EFFECT TRANSISTORS
ULTRATHIN MULTILAYER
MONTMORILLONITE
SENSOR |
| 日期: | 2010-12 |
| 上傳時間: | 2011-12-08 14:52:58 (UTC+8) |
| 摘要: | In the current work, layer-by-layer self-assembled mica and cationic polyelectrolyte (poly(allylamine hydrochloride)) (PAH) or poly(diallyldimethylammonium chloride) (PDDA) were synthesized on a quartz-crystal microbalance (QCM) for low-humidity sensing applications. The surface characteristics of the thin films were studied for various assembly conditions. The thin films were characterized using QCM and by atomic force microscopy (AFM). The surface roughness and thickness of the mica/PDDA thin film both exceeded that of the mica/PAH thin film. The effects of the polycations type, polycations concentration and the number of layers on the low-humidity sensing properties (sensitivity) of the sensors were investigated. Additionally, other low-humidity sensing properties such as sensing linearity, response and recovery times and reproducibility were studied. The mica/PDDA multilayered thin film had the highest sensitivity (0.930-Delta Hz/Delta ppm(v) at 42.9 ppm(v)) and linearity and a short response time (12 s at 92.2 ppm(v)). |
| 顯示於類別: | [化學工程與材料工程學系暨碩士班] 期刊論文
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