Reversible Tuning of Mie Resonances in the Visible Spectrum

Reversible Tuning of Mie Resonances in the Visible Spectrum

ACS Nano

10.1021/acsnano.1c07114

http://dx.doi.org/10.1021/acsnano.1c07114

Li Lu, Zhaogang Dong, Febiana Tijiptoharsono, Ray Jia Hong Ng, Hongtao Wang, Soroosh Daqiqeh Rezaei, Yunzheng Wang, Hai Sheng Leong, Poh Chong Lim, Joel K. W. Yang, Robert E. Simpson

General Physics and Astronomy, General Engineering, General Materials Science

09 December 2021

Lu, L., Dong, Z., Tijiptoharsono, F., Ng, R. J. H., Wang, H., Rezaei, S. D., Wang, Y., Leong, H. S., Lim, P. C., Yang, J. K. W., & Simpson, R. E. (2021). Reversible Tuning of Mie Resonances in the Visible Spectrum. ACS Nano, 15(12), 19722–19732. https://doi.org/10.1021/acsnano.1c07114

Dielectric optical nanoantennas are promising as fundamental building blocks in next generation color displays, metasurface holograms, and wavefront shaping optical devices. Due to the high refractive index of the nanoantenna material, they support geometry-dependent Mie resonances in the visible spectrum. Although phase change materials, such as the germanium–antimony–tellurium alloys, and post-transition metal oxides, such as ITO, have been used to tune antennas in the near-infrared spectrum, reversibly tuning the response of dielectric antennas in the visible spectrum remains challenging. In this paper, we designed and experimentally demonstrated dielectric nanodisc arrays exhibiting reversible tunability of Mie resonances in the visible spectrum. We achieved tunability by exploiting phase transitions in Sb2S3 nanodiscs. Mie resonances within the nanodisc give rise to structural colors in the reflection mode. Crystallization and laser-induced amorphization of these Sb2S3 resonators allow the colors to be switched back and forth. These tunable Sb2S3 nanoantenna arrays could enable the next generation of high-resolution color displays, holographic displays, and miniature LiDAR systems.

Publisher Copyright

This research / project is supported by the A*STAR - Individual Research Grants
Grant Reference no. : A20E5c0093

This research / project is supported by the A*STAR - Career Development Award
Grant Reference no. : 202D8088

This research / project is supported by the A*STAR - AME Programmatic
Grant Reference no. : A18A7b0058

This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Nano, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://doi.org/10.1021/acsnano.1c07114

https://oar.a-star.edu.sg/communities-collections/articles/18658

1936-0851
1936-086X

Institute of Materials Research and Engineering