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Site‐Selective Growth of Colloidal Crystals with Photonic Properties on Chemically Patterned Surfaces
Author(s) -
Fustin C.A.,
Glasser G.,
Spiess H.W.,
Jonas U.
Publication year - 2003
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200304792
Subject(s) - materials science , colloidal crystal , wetting , capillary action , colloid , nanotechnology , photonic crystal , meniscus , crystallization , self assembly , chemical engineering , optoelectronics , optics , composite material , physics , incidence (geometry) , engineering
Microscopically structured colloidal crystals have been self‐assembled using capillary forces onto chemically patterned surfaces. It is shown that the wetting meniscus on substrates patterned with hydrophobic and hydrophilic regions acts in this process as self‐removing crystallization template (see Figure). By this method, closed‐packed structures with a well‐defined and intense bandgap in the visible range are obtained.