Fast Topology Optimization for Near-Field Focusing All-Dielectric Metasurfaces Using the Discrete Dipole Approximation

Autor:	Yage Zhao, Ming Zhang, Alessandro Alabastri, Peter Nordlander
Rok vydání:	2022
Předmět:	General Engineering General Physics and Astronomy General Materials Science
Zdroj:	ACS Nano. 16:18951-18958
ISSN:	1936-086X 1936-0851
DOI:	10.1021/acsnano.2c07848
Popis:	Using an efficient implementation of the discrete dipole approximation and topology optimization, we design all-dielectric metasurfaces capable of focusing light into intense deep subwavelength hotspots. The light focusing of these metasurfaces far outweighs conventional lenses and can provide dramatic enhancements of processes that depend superlinearly on light intensity, such as light-powered membrane distillation and photocatalysis. Our approach can easily be generalized to optimize metasurfaces for other functionalities, such as nonlinear optics or photothermal conversion.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0b6db361a85ab5106d9a9f33265e587a https://doi.org/10.1021/acsnano.2c07848 Zobrazit plný text záznamu