A Plasmon-Assisted Optofluidic (PAOF) System for Measuring the Photothermal Conversion Efficiencies of Gold Nanostructures and Controlling an Electrical Switch

摘要

In localized surface plasmon resonance (LSPR), the electrons in the conduction band of a plasmonic nanostructure are polarized by the alternating electric field of an incident light to collectively oscillate at a resonant frequency. As a result, the incident light is absorbed by the plasmonic nanostructure. Some of the absorbed energy is emitted as light through scattering while the rest is dissipated by Landau damping, resulting in light-to-heat conversion. Photothermal conversion has been used to induce localized heating of a host medium, which is of great interest for applications in a number of fields, including photonics, electronics, catalysis, phase transformation, and biomedicine.