Work

Electrically Tunable Metalens Based on PEDOT:PSS

Year: 2025

Type: article

Abstract: Tunable metalenses are planar optical elements that hold immense potential in the field of integrated optics, enabling reconfigurable focusing without the bulkiness associated with traditional lenses. This study proposes an electrically tunable metalens which integrates poly(3,4-ethylenedioxythiophene)-polystyrenesulfonate (PEDOT:PSS) with a metasurface. The focal length is electrically controlled through electrochemical modulation of the PEDOT:PSS film thickness and deintercalation in an electrolyte. The Fresnel zone plate (FZP) design is employed to simplify the phase profile and reduce optimization complexity. More importantly, the modulated PSO algorithm is implemented to inverse-design the units and suppress inter-unit phase crosstalk. Simulation results demonstrate that the metalens achieves diffraction-limited focusing, with a zoom ratio reaching 10:1. This work provides a feasible strategy for developing high-performance dynamically tunable metalens, with promising applications in miniaturized imaging, microscopy, and integrated photonic systems.

Source: Micromachines

DOI: 10.3390/mi16121341

Authors: Miao Zhang, Dizhi Sun, Shiqi Zhang, Liangui Deng, Jiaxin Li, Jianguo Guan

Institutions: Wuhan University of Technology, State Key Laboratory of Advanced Technology For Materials Synthesis and Processing, China Electric Power Research Institute

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: $2,534

Funders: National Natural Science Foundation of China, Natural Science Foundation of Hubei Province, National Key Research and Development Program of China