材料科学
等离子体子
双金属片
微晶
光电子学
纳米结构
纳米技术
制作
纳米晶
激发
冶金
金属
医学
替代医学
电气工程
工程类
病理
作者
Hiroyasu Nishi,Yuan Zuo,Yoshinori Kuroiwa,Tetsu Tatsuma
摘要
Plasmonic heteronanostructures are promising building blocks for photofunctional materials and devices including photocatalysts, optical materials, and optoelectronic devices. In the present work, we fabricated Au–Ag bimetallic heteronanostructures based on site-selective and anisotropic Ag deposition and growth on Au nanocubes. Plasmonic Au nanocubes were adsorbed onto a glass plate, and the distal mode or proximal–distal mode of the nanocubes was selectively excited in the presence of Ag+ and citrate ions. Polycrystalline Ag was deposited around the top of the Au nanocubes by the distal mode excitation, and single crystalline Ag was grown laterally from the Au nanocubes by the proximal–distal mode excitation. The present method would be applied to the fabrication of various plasmonic nanostructures composed of two or more heterodomains.
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