Work

Terahertz metasurfaces embedded into hydrogel layers

Year: 2025

Type: article

Abstract: This work fabricates a metasurface embedded into a hydrogel layer using photolithography, sputtering, lift-off process, and imprinting. The split ring resonators (SRRs) of the metasurface develop cracks as the hydrogel layer is exposed to water. These cracks, which arise from the swelling of the hydrogel layer in water, increase the resistances of the SRRs, degenerating their electromagnetic resonance, and increasing the transmittance of the metasurface at its resonance frequency. The increased resonance transmittance reveals the existence of water in the hydrogel layer. As a result, the metasurface embedded into the hydrogel layer has potential for developing humidity sensors and water harvesters.

Source: Optics Express

DOI: 10.1364/oe.564944

Authors: Harry Miyosi Silalahi, Hsiao-Fan Lo, Jih-Hsin Liu, Chia-Yi Huang

Language: English

Topic: Metamaterials and Metasurfaces Applications

Subfield: Electronic, Optical and Magnetic Materials

Field: Materials Science

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,270

Funder: National Science and Technology Council

Award: 利用液晶操控拓譜結構的光子噴流( I )