journal article·2021-03-17Open access

Edge Detection with Mie-Resonant Dielectric Metasurfaces

Andrei Komar, Rifat Ahmmed Aoni, Lei Xu, Mohsen Rahmani, Andrey E. Miroshnichenko, Dragomir N. Neshev

ACS Photonics· Volume 8· Issue 3

Abstract

We demonstrate an optical image processing technique in the form of edge detection of an object by exploring the angular selectivity of Mie-resonant dielectric metasurfaces of hexagonal symmetry. We examine the effect of both electric and magnetic Mie-type resonances on the spatial dispersion and reveal that the magnetic resonance provides better edge detection. We also explore the polarization sensitivity of the edge detection process and show that edge detection in our hexagonal metasurface is polarization independent. Our results shed light on the underlying mechanisms of edge detection with resonant dielectric metasurfaces and open new opportunities for ultracompact optical image processing devices having multiple applications in vision and microscopy.
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Research context

OpenAlex topics: Metamaterials and Metasurfaces Applications · Advanced Antenna and Metasurface Technologies · Plasmonic and Surface Plasmon Research

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Affiliations

ARC Centre of Excellence for Transformative Meta-Optical Systems (TMOS), Research School of Physics, The Australian National University, Canberra, ACT 2601, Australia

School of Engineering and Information Technology, University of New South Wales, Canberra, ACT 2600, Australia

Advanced Optics and Photonics Laboratory, Department of Engineering, School of Science and Technology, Nottingham Trent University, Nottingham NG11 8NS, United Kingdom

Funding

Royal Society · Australian Research Council · Wolfson Foundation

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