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Three-Dimensional Self-Assembly of Colloids at a Water–Air Interface: A Novel Technique for the Fabrication of Photonic Bandgap Crystals
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2002
Year
Colloidal MaterialEngineeringWater–air InterfaceSoft MatterPhotonic CrystalsBiophysicsNanophotonicsMaterials SciencePolystyrene ParticlesColloidal ParticlesPhotonic MaterialsColloidal PropertyThree-dimensional Self-assemblyColloidal SystemColloid ChemistryNanomaterialsSelf-assemblyPhotonic StructuresApplied PhysicsPlanar SubstrateNanofabricationPhotonic Bandgap CrystalsPolymer Self-assembly
Three-dimensional structures of colloidal particles (see Figure for an assembly of polystyrene particles) have been constructed on a water surface rather than on a planar substrate. This method can be used to generate colloidal particles three-dimensionally irrespective of their size, and if a generated colloidal opal structure is infiltrated by semiconducting materials it could be used for a large range of optical applications.