Fabrication of Alloyed Plasmonic Nanostructures

Abstract

We have fabricated homogeneous thin films of an alloy of Au and Ag, by annealing two consecutive deposited layers of Au and Ag. We have also successfully fabricated nanodisks and nanorods made of AuAg alloys by annealing the nanostructures at 300 degrees C for 5 hours showing that the nanostructures retain their shape after annealing. The developed process additionally enables tailoring the properties of the plasmonic material, providing a supplementary degree of freedom and enables the fabrication of a variety of plasmonic nanostructures with the properties of the request.