Humidity- and Temperature-Tunable Metal-Hydrogel-Metal Reflective Filters.

ABSTRACT: A tunable reflectance filter based on a metal-hydrogel-metal structure responsive to humidity and temperature is reported. The filter employs a poly(N-isopropylacrylamide)-acrylamidobenzophenone (PNIPAm-BP) hydrogel as an insulator layer in the metal-insulator-metal (MIM) assembly. The optical resonance of the structure is tunable by water immersion across the visible and near-infrared range. Swelling/deswelling and the volume phase transition of the hydrogel allow continuous reversible humidity- and/or temperature-induced tuning of the optical resonance. This work paves the way toward low-cost large-area fabrication of actively tunable reversible photonic devices.

SUBMITTER: Chervinskii S 

PROVIDER: S-EPMC8554756 | biostudies-literature | 2021 Oct

REPOSITORIES: biostudies-literature