Plasmene metasurface absorbers: electromagnetic hot spots and hot carriers

Qianqian Shi, Timothy U. Connell, Qi Xiao, Anthony S.R. Chesman, Wenlong Cheng, Ann Roberts, Timothy J. Davis, Daniel E. Gómez

Research output: Contribution to journalArticleResearchpeer-review

12 Citations (Scopus)

Abstract

Light-matter interactions are extremely important, as they sustain life on Earth and can be tailored for diverse applications in areas such as solar energy conversion, chemical sensing, and information storage. One key process of these interactions is the absorption of photons. We demonstrate a novel material capable of absorbing up to 98% of incident visible light. The material comprises a thin sheet of a tightly packed two-dimensional lattice of metal nanoparticles, called plasmene, supported by a thin (subwavelength) dielectric film deposited on top of a mirror. We demonstrate how the resulting metasurface absorbers are useful in surface-enhanced spectroscopy and in the generation of plasmonic hot carriers. These structures hold great promise for applications in structural color, sensing, and photocatalysis.

Original languageEnglish
Pages (from-to)314-321
Number of pages8
JournalACS Photonics
Volume6
Issue number2
DOIs
Publication statusPublished - 20 Feb 2019

Keywords

  • hot carriers
  • metasurfaces
  • optical magnetic mode
  • perfect absorption
  • plasmene
  • plasmonics

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