Theoretical condition for transparency in mesoporous layered optical media: Application to switching of hygrochromic coatings

O. Deparis, M. N. Ghazzal, P. Simonis, S. Mouchet, H. Kebaili, J. De Coninck, E. M. Gaigneaux, J. P. Vigneron

    Résultats de recherche: Contribution à un journal/une revueLettreRevue par des pairs

    121 Téléchargements (Pure)

    Résumé

    Mesoporous Bragg stacks are able to change color upon infiltration or displacement of liquid compounds inside their porous structure. Reversible switching from transparency to coloration offers additional functionality. Based on Bruggeman's effective medium theory, we derive a transparency master equation, which is valid for bilayers of arbitrary host materials and pore-filling compounds. The transparency condition fixes pore volume fractions such that the effective refractive index is homogenized through the bilayer, hence, through arbitrary layered optical media built from this bilayer. This general concept is applied to the case of switching of hygrochromic coatings made of mesoporous mixed oxide Bragg stacks.

    langue originaleAnglais
    Numéro d'article023704
    Pages (de - à)3704
    Nombre de pages4
    journalApplied Physics Letters
    Volume104
    Numéro de publication2
    Les DOIs
    Etat de la publicationPublié - 13 janv. 2014

    Empreinte digitale

    Examiner les sujets de recherche de « Theoretical condition for transparency in mesoporous layered optical media: Application to switching of hygrochromic coatings ». Ensemble, ils forment une empreinte digitale unique.

    Contient cette citation