Authors

Semyon Chervinskii, Ibrahim Issah, Markus Lahikainen, Alireza R. Rashed, Kim Kuntze, Arri Priimagi,* and Humeyra Caglayan*

Affiliations

"Faculty of Engineering and Natural Sciences, Tampere University, 33720 Tampere, Finland
*Email: [email protected]
*Email: [email protected]"

Topic

Biophotonics, Materials Science

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.

DOI: https://dx.doi.org/10.1021/acsami.1c15616

Extract

The deposition was followed by drying for 1 h at 40 °C in a vacuum and cross-linking under UV light (365 nm from CoolLED pE-4000 focused into a circle of ca. 2 cm in diameter) for 40 min.

Product Associated Features

The pE-4000 Universal Illumination System offers 16 selectable wavelengths from 365 - 770 nm, making it a highly flexible illuminator covering a wide variety of fluorophores

Product Type

pE-4000

Journal

American Chemical Society

Year of Publication

2021

Country of Publication

USA