Modeling additive color effect in natural photonic polycrystals using the layer homogenization method: The case of the diamond weevil

Titre traduit de la contribution: Modeling Additive Color Effect in Natural Photonic Polycrystals using the Layer Homogenization Method: the Case of the Diamond Weevil

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Résumé

The original method we propose allows to compute the spectral reflectance of photonic crystals whose unit cell is composed of form-birefringence anisotropic elements such as cylinders or parallelepipeds. This method relies on the layer homogenization of the photonic structure. It is especially useful for the calculation of reflectance according to different crystal orientations. The coloration due to an additive color effect in the photonic polycrystal found on the diamond weevil, Entimus imperialis, was investigated. Simulating the reflectance of photonic polycrystals often turns out to be necessary in the study of such structures as well as in the design and production of bioinspired devices (Vigneron and Lousse, Proc SPIE 6128:61281G, 2006; Deparis and Vigneron, Mater Sci Eng B-Adv 169(1–3):12–15, 2010). In this context, the computation of the reflectance of photonic crystals (PCs) displaying form-birefringence anisotropic elements in the unit cell (e.g., cylinders, parallelepipeds...) turns out to be cumbersome, particularly when the reflectance is calculated for different crystal orientations as in the case of polycrystals. The method proposed here solves this problem in the particular case of a PC with a periodicity that is such that there is only specular reflection and no higher-order diffraction (Mouchet et al. Opt Express 21(11):13228–13240, 2013). In this method, the structure with a particular crystal orientation is sliced into layers and the periodic dielectric function ε (formula displayed) is homogenized within each layer (Fig. 60.1a). Using this Layer Homogenization (LH) method, the reflectance of one single domain of the polycrystal can be computed in an arbitrary orientation thanks to a standard thin film solver. The reflectance due to the additive color effect created by the disorder in the crystal domain orientation of the polycrystal is modeled by averaging reflectance spectra computed for several incidence angles and crystal domain orientations. Our method was applied to the case of a natural photonic polycrystal found on the cuticle of the diamond weevil Entimus imperialis (Fig. 60.2a). Its coloration is due to an additive color effect created by PC domains with various orientations (Fig. 60.2b) (Deparis and Vigneron, Mater Sci Eng B-Adv 169(1–3):12–15, 2010; Mouchet et al. Proc SPIE 8480:848003, 2012): a single PC domain gives rise to a gleaming iridescent color (from blue to orange) but the disorder in the crystal domain orientation results in a non-iridescent dull color (Fig. 60.2a). Investigating such a structure is relevant in the development of bioinspired applications such as biomimetic devices e.g., gas, temperature or pH sensors (Van Opdenbosch et al. Photon Nanostruct 10(4):516–522, 2012).

Titre traduit de la contributionModeling Additive Color Effect in Natural Photonic Polycrystals using the Layer Homogenization Method: the Case of the Diamond Weevil
langue originaleAnglais
Pages (de - à)541-542
Nombre de pages2
journalNATO Science for Peace and Security Series B: Physics and Biophysics
Volume68
Les DOIs
Etat de la publicationPublié - 2015
Evénement30th Course Nano-structures for Optics and Photonics, A NATO Advanced Study Institute, International School of Atomic and Molecular Spectroscopy - Ettore Majorana Foundation and Center for Scientific Culture, Erice, Sicily, Italie
Durée: 4 juil. 201319 juil. 2013

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  • Projets

    Équipement

    Morphologie - Imagerie

    Charles Nicaise (!!Manager) & Francesca Cecchet (!!Manager)

    Plateforme technologique Morphologie, imagerie

    Equipement/installations: Plateforme technolgique

  • Activités

    • 2 Participation à une conférence, un congrès

    34th Progress In Electromagnetics Research Symposium (PIERS)

    Sébastien Mouchet (Conférencier)

    12 août 201315 août 2013

    Activité: Types de Participation ou d'organisation d'un événementParticipation à une conférence, un congrès

    30th Course Nano-structures for Optics and Photonics, A NATO Advanced Study Institute, International School of Atomic and Molecular Spectroscopy

    Sébastien Mouchet (Poster)

    14 juil. 2013

    Activité: Types de Participation ou d'organisation d'un événementParticipation à une conférence, un congrès

    Presse/médias

    Image of the Week, Optics & Photonics News, 09/01/2017

    Sébastien Mouchet

    9/01/17

    1 Contribution média

    Presse/Médias: Autre

    Thèses de l'étudiant

    Étude de couleurs structurales : influence de la dimensionnalité sur la diffusion de la lumière dans des cristaux photoniques naturels

    Author: Mouchet, S., 2011

    Superviseur: Colomer, J. (Promoteur), Vandenbem, C. (Copromoteur), Houssiau, L. (Jury) & Frising, F. (Jury)

    Thèse de l'étudiant: Master typesMaster en sciences physiques

    Mécanismes fondamentaux de la coloration structurale : addiction et induction de couleurs

    Author: Mouchet, S., 29 sept. 2015

    Superviseur: Deparis, O. (Promoteur), Su, B. L. (Jury), Lepere, M. (Président), Vukusic, P. (Personne externe) (Jury), Berthier, S. (Personne externe) (Jury) & Voué, M. (Personne externe) (Jury)

    Thèse de l'étudiant: Doc typesDocteur en Sciences

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