Substrate-based galvanic replacement reactions carried out on heteroepitaxially formed silver templates  

作　　者：Kyle D. Gilroy Pouyan Farzinpour Aarthi Sundar Teng Tan Robert A. Hughes Svetlana Neretina 

机构地区：[1]College of Engineering, Temple University, Philadelphia 19122, USA [2]Department of Physics, Temple University, Philadelphia 19122, USA

出　　处：《Nano Research》2013年第6期418-428,共11页纳米研究（英文版）

摘　　要：Galvanic replacement reactions have been widely used to transform solution dispersed silver template structures into intricate nanoshell geometries. Here, we report on the use of these same reactions to form hollow substrate-supported Au-Ag nanoshells from silver templates having a heteroepitaxial relationship with the underlying single crystal substrate. The structures obtained exhibit a nanohut geometry, show highly tunable plasmonic properties and are formed as periodic arrays using a lithography-free technique. When removed from the substrate the inverted nanohuts appear as nanobowls with a notch in the rim. The study lays the groundwork for wafer-based devices utilizing nanoshells located at site-specific locations.流电的代替反应广泛地被用来转变驱散的银模板组织进复杂 nanoshell 几何学的答案。这里，我们在这些一样的反应的使用上报导从与内在的单个水晶底层有一种 heteroepitaxial 关系的银模板形成空支持底层的 Au-Ag nanoshells。获得的结构展出 nanohut 几何学，显示出高度悦耳的 plasmonic 性质并且用一种没有平版印刷术的技术作为周期的数组被形成。当从底层搬迁了时转换 nanohuts 在边界与一张槽口作为 nanobowls 出现。学习为利用在地点特定的地点定位的 nanoshells 的基于晶片的设备放地基。

关 键 词：galvanic replacement HETEROEPITAXY nanohut nanobowl semishell PLASMON 

分 类 号：O641.4[理学—物理化学] TN304.23[理学—化学]