Photonic crystal slab strain sensors: A viable tool for structural health monitoring

Valentina Piccolo, Anna Piotrowska, Andrea Chiappini, Alessandro Vaccari, Maurizio Ferrari, Luca Deseri, Daniele Zonta

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

We discuss the possible use of photonic crystals as strain sensors. We demonstrate the feasible fabrication of a crystal having sub-micrometric polystyrene colloidal spheres in a PDMS matrix on a rubber substrate, and we demonstrate that the photonic properties change with substrate elongation according to theoretical prediction. The crystal's sensitivity to strain depends directly on interplanar spacing and on Poisson's ratio. To enhance the crystal strain resolution, we propose to fabricate photonic crystal slabs, which exhibit a high geometrical Poisson's ratio, and we investigate their mechanical behavior through non-linear Finite Element analysis and then, through an approximate optomechanical approach, the optical response.

Original languageEnglish (US)
Title of host publication2016 18th International Conference on Transparent Optical Networks, ICTON 2016
PublisherInstitute of Electrical and Electronics Engineers Inc.
Volume2016-August
ISBN (Electronic)9781509014675
DOIs
StatePublished - Aug 23 2016
Event18th International Conference on Transparent Optical Networks, ICTON 2016 - Trento, Italy
Duration: Jul 10 2016Jul 14 2016

Other

Other18th International Conference on Transparent Optical Networks, ICTON 2016
CountryItaly
CityTrento
Period7/10/167/14/16

Keywords

  • buckling
  • nonlinear elasticity
  • numerical analysis
  • optical response
  • photonic crystal slabs
  • structural health monitoring

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials

Fingerprint Dive into the research topics of 'Photonic crystal slab strain sensors: A viable tool for structural health monitoring'. Together they form a unique fingerprint.

Cite this