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Cover Picture: Synthesis of Light‐Diffracting Assemblies from Microspheres and Nanoparticles in Droplets on a Superhydrophobic Surface (Adv. Mater. 22/2008)
Author(s) -
Rastogi Vinayak,
Melle Sonia,
Calderón Oscar G.,
García Antonio A.,
Marquez Manuel,
Velev Orlin D.
Publication year - 2008
Publication title -
advanced materials
Language(s) - English
Resource type - Reports
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200890089
Subject(s) - materials science , dispersity , nanoparticle , nanotechnology , colloid , colloidal gold , chemical engineering , optical microscope , diffraction , optics , scanning electron microscope , composite material , polymer chemistry , physics , engineering
Orlin Velev and co‐workers report on page 4263 on the synthesis of light‐diffracting assemblies obtained from microspheres and nanoparticles in droplets on a superhydrophobic surface. The cover shows optical microscopy images of drying droplets from aqueous suspensions of monodisperse latex or latex/gold nanoparticle mixtures dispensed on superhydrophobic substrates. Colloidal crystals are formed in the surface layer of the droplets due to the flux of evaporating water. The colloidal crystals give rise to multicolored diffraction patterns upon illumination with collimated white light. Once completely dried, these templates yield structured “nanojewel” supraparticles.