Second Harmonic Generation for Moisture Monitoring in Dimethoxyethane at a Gold-Solvent Interface Using Plasmonic Structures.

摘要: Second harmonic generation (SHG) is forbidden from most bulk metals because are characterized by centrosymmetric symmetry. Adsorption or desorption of molecules at the metal interface can break symmetry and lead to SHG responses. Yet, response relatively low, minute changes occurring interface, especially solid/liquid interfaces, like in battery electrodes difficult assess. Herein, we use a plasmonic structure milled gold electrode increase overall signal gain information about small interface. Using specific homebuilt cell, monitor liquid/electrode Specifically, traces water dimethoxyethane (DME) have been detected following responses structures. We propose that structures this technique be used for assessing interfaces such as electrodes.