Geometrical and fluidic tuning of periodically modulated thin metal films

Giovanni Gilardi, Sanshui Xiao, Romeo Beccherelli, Antonio d’Alessandro, N. Asger Mortensen

Research output: Contribution to journalJournal articleResearchpeer-review


We numerically demonstrate near-zero transmission of light through two-dimensional arrays of isolated gold rings. The analysis of the device as an optofluidic sensor is presented to demonstrate the tuning of the device in relation to variations of volume and refractive index of an isotropic fluid positioned over the structure. We also evaluate the performance of the device with respect to geometrical parameters of the rings.
Original languageEnglish
JournalPhotonics and Nanostructures - Fundamentals and Applications
Issue number1
Pages (from-to)177-182
Publication statusPublished - 2012


  • Diffraction and gratings
  • Surface plasmons
  • Metal optics

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