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題 名 | 結合光學微影與微波快速加熱法製備選區成長金/銀核層奈米材料 |
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作 者 | 劉福鯤; 黃珮雯; 張育誠; 吳世全; 柯富祥; 朱鐵吉; | 書刊名 | 奈米通訊 |
卷 期 | 12:3 2005.08[民94.08] |
頁 次 | 頁2-7 |
分類號 | 440.34 |
關鍵詞 | 光學微影; 微波快速加熱; 選區成長; 金/銀核層; 奈米材料; Optical lithography; Rapid microwave heating; Selective growth; Au/Ag core/shell; Nanomaterials; |
語 文 | 中文(Chinese) |
中文摘要 | 摘要 本論文中,我們發展一種在矽晶片上製備圖案化金/銀核層奈米材料的新方法。在製作上,我們先將球型金奈米粒子在胺基官能化與圖案化後的矽晶片上藉由金—胺基之間專一性吸附力,形成圖案化金奈米粒子單層膜。將這些金奈米粒子當作成長金/銀核層奈米材料的核種,然後將存在於檸檬酸鈉的銀離子於微波快速加熱的輔助下於金奈米核種的表面產生快速還原反應,以完成金/銀核層奈米材料的製備。在奈米材料結構鑑定上,使用 X- 光能量散射分析儀驗證此製程條件可以在圖案化金奈米粒子上製備出金/銀核層奈米顆粒。藉由掃描式電子顯微鏡觀測影像結果後得知,本方法可以製備出高密度且分散均勻的圖案化金/銀核層奈米結構。此圖案化金/銀核層奈米結構具有製程簡易與製程再現性良好的優點,相信這個製程策略對未來在奈米科技的相關研究上會有所幫助。 |
英文摘要 | We demonstrate a novel approach for the production of patterned films of nanometer-sized Au/Ag core/shell nanoparticles (NPs) on silicon wafers. In this approach, we first self-assembled monodisperse Au NPs, through specific Au—NH2 interactions, onto a silicon substrate whose surface had been modified with a pattern of 3-aminopropyltrimethoxysilane (APTMS) groups to form a sandwich structure having the form Au NPs/APTMS/SiO2. These Au NPs then served as seeds for growing the Au/Ag core/shell NPs: we reduced silver ions to Ag metal on the surface of Au seeds under rapid microwave heating in the presence of sodium citrate. Energy-dispersive X-ray analysis confirmed that the Au/Ag core/shell NPs grew selectively on the regions of the surface of the silicon wafer that had been patterned with the Au seeds. Scanning electron microscopy images revealed that we could synthesize well-scattered, high-density (>82%) thin films of Au/Ag core/shell NPs through the use of this novel strategy. The patterned structures that can be formed are simple to produce, easily controllable, and highly reproducible; we believe that this approach will be useful for further studies of nanotechnology and their properties. |
本系統中英文摘要資訊取自各篇刊載內容。