Surface Plasmon Resonances of Free-Standing Gold Nanowires Fabricated by Nanoskiving

摘要

Herein we present both a simple, experimentally convenient method for the fabrication of gold nanowires with uniform, controlled dimensions (Figure 1), and a systematic study of the dependence of the plasmon resonance of these gold nanowires on the geometry of these wires. The length of the wires is determined by photolithography; the width is determined by the thickness of a film fabricated by deposition from the vapor; the height is determined by sectioning (nanoskiving) with the diamond knife of a microtome.[1], [2] The cross sections of the wires can be as small as 10 nm?0 nm. We measure the surface plasmon resonances of individual gold wires, and show these resonances to be determined by their cross-sectional dimensions.