Plasmonic absorption properties of bimetallic metamaterials

TL;DR

This paper investigates how bimetallic metamaterials, specifically Au/Ni ring resonators, can be used to control polarization-dependent plasmonic absorption, with experimental validation of tunable electromagnetic field enhancement and suppression.

Contribution

It introduces polarization-controlled absorption in Au/Ni bimetallic metamaterials and demonstrates experimental tuning of electromagnetic fields within the structures.

Findings

Polarization influences absorption and field distribution in the metamaterials.

Experimental validation of tunable absorption properties.

Demonstration of selective enhancement or suppression of fields.

Abstract

We demonstrate polarization controlled absorption in plasmonic bimetallic metamaterials. We fabricate and experimentally characterize Au/Ni ring resonator arrays, where by varying the wavelength and polarization of the incident wave, local electromagnetic fields and dissipation can be suppressed or enhanced in the Au and Ni areas of the rings.