Article Title

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

Authors

Kyle D. Gilroy, College of Engineering, Temple University, Philadelphia 19122, USA
Pouyan Farzinpour, College of Engineering, Temple University, Philadelphia 19122, USA
Aarthi Sundar, College of Engineering, Temple University, Philadelphia 19122, USA
Teng Tan, Department of Physics, Temple University, Philadelphia 19122, USA
Robert A. Hughes, College of Engineering, Temple University, Philadelphia 19122, USA
Svetlana Neretina, College of Engineering, Temple University, Philadelphia 19122, USA

Keywords

galvanic replacement, heteroepitaxy, nanohut, nanobowl, semishell, plasmon

Abstract

ABSTRACT 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.

Graphical Abstract

DOI

https://doi.org/10.1007/s12274-013-0319-5

Publisher

Tsinghua University Press

Recommended Citation

Kyle D. Gilroy,Pouyan Farzinpour,Aarthi Sundar,Teng Tan,Robert A. Hughes,Svetlana Neretina, Substrate-based galvanic replacement reactions carried out on heteroepitaxially formed silver templates. NanoRes.2013, 6(6): 418–428