Building planar defects into colloidal crystals using particles of different chemical nature

Jean-François Dechézelles (1) , Pascal Massé (1) , Eric Cloutet (2, 3) , Henri Cramail (2, 4) , Serge Ravaine (1)

1 CRPP - Centre de recherches Paul Pascal
2 LCPO - Laboratoire de Chimie des Polymères Organiques
3 Team 4 LCPO : Polymer Materials for Electronic, Energy, Information and Communication Technologies
4 Team 2 LCPO : Biopolymers & Bio-sourced Polymers

We have fabricated three-dimensional (3D) colloidal crystals containing a two-dimensional (2D) defect made of particles of different nature and of different size. The presence of the extrinsic defect led to an impurity mode within the photonic stop band, which was observed as a pass band in the near-infrared (NIR) spectra. We also built a heterostructure containing a planar defect made of particles of different nature but of the same size than those forming the host opal. A pass band was also observed, due to the difference between the refractive indexes of the guest and host colloid

Mots clés: defect; colloidal crystal; cavity; heterostructure

Domaines: Polymères

Jean-François Dechézelles, Pascal Massé, Eric Cloutet, Henri Cramail, Serge Ravaine. Building planar defects into colloidal crystals using particles of different chemical nature. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2009, 343 (1-3), pp.8-11. ⟨10.1016/j.colsurfa.2009.01.022⟩. ⟨hal-00396350⟩