Tunable Focusing by a Flexible Metasurface
Yair Z\'arate, Ilya V. Shadrivov, David A. Powell
TL;DR
This paper introduces a flexible, stretchable elastic metasurface capable of tunable focusing, with experimental verification demonstrating its potential for adaptive optical devices.
Contribution
It presents a novel elastic metasurface with tunable focal length controlled by stretching, combining theoretical, numerical, and experimental validation.
Findings
Focal length can be dynamically tuned by stretching the metasurface.
Theoretical predictions match numerical simulations and experimental results.
Elastic metasurfaces are promising for adaptive optical applications.
Abstract
An efficient reflective elastic metasurface with tunable focusing point is proposed. The metasurface is based on electric resonators embedded in a stretchable elastic substrate. The focal length is controlled by mean of the stretching applied applied to the sample. The results predicted by theory and numerical simulations are experimentally verified. Our proposal shows that smart engineering elastic metamaterials are an effective platform for new functional devices based on metamaterials.
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