Development of Structural Color by Niobate Nanosheet Colloids
Emiko Mouri, Chiari Ogami, Takashi Fukumoto, Teruyuki Nakato
Abstract
Inorganic nanosheets obtained by exfoliation of layered crystals of hexaniobate in water form colloidal liquid crystals. We found that they develop various structural colors by moderating nanosheet concentration and ionic atmosphere. Structural coloration of colloidal liquid crystals (LCs) of niobate nanosheets, which are milky turbid after a conventional preparation procedure, was realized by modification of the ionic atmosphere of their aqueous medium. Structural colors were observed at appropriately low concentrations of both inorganic and organic cations.
Topics & Concepts
NanosheetExfoliation jointColloidChemistryIonic bondingAqueous solutionIonic liquidStructural colorationColloidal crystalChemical engineeringAtmosphere (unit)NanotechnologyMaterials scienceIonOrganic chemistryGrapheneOptoelectronicsCatalysisPhotonic crystalPhysicsEngineeringThermodynamicsPhotonic Crystals and ApplicationsPigment Synthesis and PropertiesLiquid Crystal Research Advancements