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標題: Fabrication of electrical device based on gold nanoparticles: The impact of molecule separation and linkage on electrical conduction properties of gold nanoparticle assembly
作者: 江丞偉
Jiang, Cheng-Wei
關鍵字: gold nanoparticles
electric transport
出版社: 奈米科學研究所
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[30] 謝婭暄,金奈米粒子生物感測元件的製作 中興大學物理學系所(2008) [31] 楊素卿,利用離心法製作金奈米顆粒薄膜探討其形成與顆粒間交互作用的關係 國立東華大學應用物理研究所 (2009) [32] 郭清癸,金屬奈米粒子的製造 物理雙月刊(廿三卷六期)2001 年 12 月 [33] 楊正義, 金屬、半導體奈米晶體在生物檢測及分析上的應用 物理雙月刊(廿三卷六期)2001 年12 月 [34] 李思毅,李佳穎,曾俊元 奈米材料的製程及其潛在的應用 物理雙月刊(廿六卷三期)2004 年6 月
摘要: 本論文以兩方面研究金奈米粒子元件:第一部分利用自組裝方式製作奈米金粒子元件,利用微流道、介電泳、離心鋪排三種方式進行奈米金粒子的自組裝。我們比較討論了各種自組裝法的薄膜形貌與導電性。離心法可以得到均勻且緊密排列的奈米金粒子薄膜。 第二部分探討奈米金粒子表面進行不同鍊長分子修飾(3、6、8、11個碳鍊鍊長)對金粒子膜導電性的影響。由電阻的溫度變化,分子修飾鍊長爲短(3個碳鍊)鍊的金粒子膜,其特性趨近於金屬性;而長(6,8,及11個碳鍊)鍊的金粒子膜,其特性趨近於絕緣體。絕緣體的電阻溫度關係符合thermal activation行爲。
This thesis presents experimental studies on nano-devices based on nanoparticles on two aspects: the processes of gold nanoparticles (AuNPs) self-assembled into nano-gaped electrodes to form nano-devices, and the electrical conduction properties for the gold nanoparticles modified by molecules of various lengths (with 3-carbon chain, 6-carbon chain, 8-carbon chain, 11-carbon chain). In the first aspect, microfluidic-channel confinement, dielectrophoresis method, and centrifugal method were employed for AuNP self-assembly. The comparison in morphology and electrical conduction of the AuNP assemblies from three methods is addressed. The centrifugal method may yield the AuNPs deposited in a closed-packed and single-layered structure. In the second aspect, the impact of AuNP-modification molecules on the electrical conduction of the AuNP assemblies obtained by the centrifugal method was studied. From the temperature-dependent resistance, the AuNP assemblies modified by short (3) carbon-chain molecules are metallic, while those modified by long (6,8, and 11) carbon-chain molecules are insulating. For the insulators, the resistance v.s. temperature curve exhibits a thermal activation behavior.
其他識別: U0005-0608201010253900
Appears in Collections:奈米科學研究所



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