Mechanically reconfigurable multi-functional meta-optics studied at microwave frequencies
Abstract
Metasurfaces advanced the field of optics by reducing the thickness of optical components and merging multiple functionalities into a single layer device. However, this generally comes with a reduction in performance, especially for multifunctional and broadband applications. Three-dimensional metastructures can provide the necessary degrees of freedom for advanced applications, while maintaining minimal thickness. This work explores 3D mechanically reconfigurable devices that perform focusing, spectral demultiplexing, and polarization sorting based on mechanical configuration. As proof of concept, a rotatable device, auxetic device, and a shearing-based device are designed with adjoint-based topology optimization, 3D-printed, and measured at microwave frequencies (7.6-11.6 GHz) in an anechoic chamber.
Additional Information
© The Author(s) 2021. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. Received 19 November 2020; Accepted 14 April 2021; Published 27 May 2021. This work was funded by the Defense Advanced Research Projects Agency EXTREME program (HR00111720035). Author Contributions: C.B., S.C., and A.F. conceived the idea. C.B. and G.R. designed the devices. C.B. fabricated the devices and conducted the experiments. C.B., S.C., and M.D. constructed the measurement system. C.B. prepared the manuscript with input from all authors. The authors declare no competing interests.Attached Files
Published - s41598-021-88785-5.pdf
Submitted - 2011.04518.pdf
Supplemental Material - 41598_2021_88785_MOESM1_ESM.docx
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Additional details
- Alternative title
- Topology optimized multi-functional mechanically reconfigurable meta-optics studied at microwave frequencies
- PMCID
- PMC8160010
- Eprint ID
- 106899
- Resolver ID
- CaltechAUTHORS:20201203-151025471
- HR00111720035
- Defense Advanced Research Projects Agency (DARPA)
- Created
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2020-12-04Created from EPrint's datestamp field
- Updated
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2022-01-06Created from EPrint's last_modified field
- Caltech groups
- Kavli Nanoscience Institute