Volume 137, Number 4, February 2022
|Number of page(s)||5|
|Section||Physics of Gases, Plasmas and Electric Discharges|
|Published online||26 April 2022|
A simple light-trapping device from a hyperbolic metamaterial on a catenoid
1 Departamento de Física, Universidade Federal Rural de Pernambuco - 52171-900, Recife, PE, Brazil
2 Departamento de Física, Universidade Federal de Pernambuco - 50670-901, Recife, PE, Brazil
3 Departamento de Estatística e Informática, Universidade Federal Rural de Pernambuco 52171-900, Recife, PE, Brazil
Received: 22 December 2021
Accepted: 10 March 2022
By using both ray and wave optics, we show that a simple device which consists of a film of hyperbolic metamaterial on the surface of a catenoid can be used to trap light. From the study of the trajectories, we observe a tendency for the light rays to wrap, and eventually be trapped, around the neck of the device. The wave equation appears to have an effective attractive potential, and their solutions confirm the bound states suggested by the trajectories. The relevant equations are solved numerically using neural networks.
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