Conference Paper

Opportunities in phosphorene plasmonic metasurfaces

  • D. Correas Serrano /
  • J. S. Gomez-Diaz /
  • A. Alvarez-Melcon /
  • A. Alu
Conference Proceeding cp
2017 11th European Conference on Antennas and Propagation, EUCAP 2017
  • Fecha: 15 May 2017
  • Páginas: 3900-3902
  • ISBN: 9788890701870
  • Source Type: Conference Proceeding
  • DOI: 10.23919/EuCAP.2017.7928623
  • Document Type: Conference Paper
  • Publisher: Institute of Electrical and Electronics Engineers Inc.
© 2017 Euraap. We investigate the use of black phosphorus thin films in infrared plasmonics and discuss spatial dispersion effects. For appropriate film thickness, black phosphorus exhibits a moderate bandgap suitable for operation in this frequency band, and the intrinsic anisotropy of its conductivity tensor provides exciting possibilities in metasurfaces/reflectarray design, such as polarization-dependent devices and unusual topological transitions for plasmons induced by electrical or mechanical bias. We study the limits on plasmon confinement and field enhancement imposed by spatial dispersion and demonstrate that these bounds are looser than in graphene. These findings may lead to infrared plasmonic devices enabling light-matter interactions beyond the capabilities of other plasmonic materials, with exciting applications in sensing, thermal imaging, and heat scavenging.

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