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 inverse photonic structures, which exhibit a high geometrical Poisson's ratio, and we investigate their photomechanical behavior through nonlinear Finite Element analysis.

Numerical characterization of mechanochromic photonic crystals for structural health monitoring / Piccolo, V.; Piotrowska, A.; Chiappini, A.; Vaccari, A.; Ferrari, M.; Deseri, L.; Zonta, D.. - 3:(2016), pp. 1595-1603. (Intervento presentato al convegno 8th European Workshop on Structural Health Monitoring, EWSHM 2016 tenutosi a esp nel 2016).

Numerical characterization of mechanochromic photonic crystals for structural health monitoring

Piccolo V.;Piotrowska A.;Chiappini A.;Vaccari A.;Ferrari M.;Deseri L.;Zonta D.
2016-01-01

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 inverse photonic structures, which exhibit a high geometrical Poisson's ratio, and we investigate their photomechanical behavior through nonlinear Finite Element analysis.
2016
8th European Workshop on Structural Health Monitoring, EWSHM 2016
Bilbao
NDT.net
Piccolo, V.; Piotrowska, A.; Chiappini, A.; Vaccari, A.; Ferrari, M.; Deseri, L.; Zonta, D.
Numerical characterization of mechanochromic photonic crystals for structural health monitoring / Piccolo, V.; Piotrowska, A.; Chiappini, A.; Vaccari, A.; Ferrari, M.; Deseri, L.; Zonta, D.. - 3:(2016), pp. 1595-1603. (Intervento presentato al convegno 8th European Workshop on Structural Health Monitoring, EWSHM 2016 tenutosi a esp nel 2016).
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11572/331738
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