Template Directed Synthesis of Plasmonic Gold Nanotubes with Tunable IR Absorbance

Abstract

A nearly parallel array of pores can be produced by anodizing aluminum foils in acidic environments 1,2 . Applications of anodic aluminum oxide (AAO) membranes have been under development since the 1990's and have become a common method to template the synthesis of high aspect ratio nanostructures, mostly by electrochemical growth or pore-wetting. Recently, these membranes have become commercially available in a wide range of pore sizes and densities, leading to an extensive library of functional nanostructures being synthesized from AAO membranes. These include composite nanorods, nanowires and nanotubes made of metals, inorganic materials or polymers [3][4][5][6][7][8][9][10]