Finite difference analysis and experimental validation of 3D photonic crystals for structural health monitoring

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Piccolo, Valentina and Chiappini, Andrea and Vaccari, Alessandro and Lesina, Antonino Calà and Ferrari, Maurizio and Deseri, Luca and Perry, Marcus and Zonta, Daniele; Lynch, Jerome P., ed. (2017) Finite difference analysis and experimental validation of 3D photonic crystals for structural health monitoring. In: Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2017. Proceedings of SPIE . Society of Photo-Optical Instrumentation Engineers, USA. ISBN 9781510608214 (https://doi.org/10.1117/12.2263975)

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Abstract

In this work, we validate the behavior of 3D Photonic Crystals for Structural Health Monitoring applications. A Finite Difference Time Domain (FDTD) analysis has been performed and compared to experimental data. We demonstrate that the photonic properties of a crystal (comprised of sub-micrometric polystyrene colloidal spheres embedded in a PDMS matrix) change as a function of the axial strain applied to a rubber substrate. The change in the reflected wavelength, detected through our laboratory experiments and equivalent to a visible change in crystal color, is assumed to be caused by changes in the interplanar spacing of the polystyrene beads. This behavior is captured by our full wave 3D FDTD model. This contains different wavelengths in the visible spectrum and the wave amplitudes of the reflected and transmitted secondary beams are then computed. A change in the reflectance or transmittance is observed at every programmed step in which we vary the distance between the spheres. These investigations are an important tool to predict, study and validate our understanding of the behavior of this highly complex physical system. In this context, we have developed a versatile and robust parallelized code, able to numerically model the interaction of light with matter, by directly solving Maxwell's equations in their strong form. The ability to describe the physical behavior of such systems is an important and fundamental capability which will aid the design and validation of innovative photonic sensors.

ORCID iDs

Piccolo, Valentina, Chiappini, Andrea, Vaccari, Alessandro, Lesina, Antonino Calà, Ferrari, Maurizio, Deseri, Luca, Perry, Marcus ORCID logoORCID: https://orcid.org/0000-0001-9173-8198 and Zonta, Daniele ORCID logoORCID: https://orcid.org/0000-0002-7591-9519; Lynch, Jerome P.
  • Item type:Book Section
    ID code:60729
    Dates:
    Date
    Event
    12 April 2017
    Published
    10 April 2017
    Accepted
    Notes:Piccolo, V., Chiappini, A., Vaccari, A., Lesina, A. C., Ferrari, M., Deseri, L., ... Zonta, D. (2017). "Finite difference analysis and experimental validation of 3D photonic crystals for structural health monitoring", In Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2017, J. P. Lynch (Ed.), Proceedings of SPIE Vol. 10168, 101681E 2017. Copyright 2017 Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited. https://doi.org/10.1117/12.2263975
    Subjects:Science > Physics > Optics. Light
    Department:Faculty of Engineering > Civil and Environmental Engineering
    Depositing user: Pure Administrator
    Date deposited:19 May 2017 13:41
    Last modified:11 Nov 2024 22:07
    URI:https://strathprints.strath.ac.uk/id/eprint/60729
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