Plasmon canalization and tunneling over anisotropic metasurfaces

Diego Correas-Serrano, Andrea Alù, and J. Sebastian Gomez-Diaz
Phys. Rev. B 96, 075436 – Published 28 August 2017

Abstract

We discuss the possibility of plasmon canalization, collimation, and tunneling over ultrathin metasurfaces, enabled by extreme anisotropy in their complex conductivity dyadic. The interplay between anisotropy, conductivity-near-zero, and loss is exploited here to derive general conditions for plasmon canalization and efficient energy transport. We also demonstrate how the intrinsic in-plane anisotropy of black phosphorus can provide a natural platform to engineer these conditions, exhibiting important advantages over isotropic plasmonic materials. Our findings have implications for plasmonic sensors, planar hyperlenses, and plasmon steering over a surface, and they highlight the potential of two-dimensional materials beyond graphene.

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  • Received 30 March 2017
  • Revised 3 August 2017

DOI:https://doi.org/10.1103/PhysRevB.96.075436

©2017 American Physical Society

Physics Subject Headings (PhySH)

Condensed Matter, Materials & Applied Physics

Authors & Affiliations

Diego Correas-Serrano1, Andrea Alù2,*, and J. Sebastian Gomez-Diaz1,†

  • 1Department of Electrical and Computer Engineering, University of California, Davis, One Shields Avenue, Kemper Hall 2039, Davis, California 95616, USA
  • 2Department of Electrical and Computer Engineering, The University of Texas at Austin, 1616 Guadalupe Street, UTA 7.215, Austin, Texas 78701, USA

  • *alu@mail.utexas.edu
  • jsgomez@ucdavis.edu

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Issue

Vol. 96, Iss. 7 — 15 August 2017

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