A Tunable Polymer–Metal Based Anti‐Reflective Metasurface

• DOI: 10.1002/marc.201900415
• Publication Date: 2019-11-29T12:15:34Z
• Authors: Yannic Brasse; Charlene Ng; Michele Magnozzi; Heyou Zhang; Paul Mulvaney; Andreas Fery; Daniel E. Gómez
• Keywords: Deposition; Electrophoretic Deposition; Particle (ecology)

Abstract Anti‐reflective surfaces are of great interest for optical devices, sensing, photovoltaics, and photocatalysis. However, most the anti‐reflective lack in situ tunability extinction with respect to wavelength. This communication demonstrates a tunable surface based on colloidal particles comprising metal core an electrochromic polymer shell. Random deposition these reflective results decrease reflectance up 99.8% at localized plasmon resonance frequency. narrow band feature can be tuned by varying pH or application electric potential, resulting wavelength shifts 30 nm. Electrophoretic particle is shown efficient method controlling interparticle distance thereby further optimizing overall efficiency metasurface.