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The Race for the Photonic Chip: Colloidal Crystal Assembly in Silicon Wafers
Author(s) -
Ozin G. A.,
Yang S. M.
Publication year - 2001
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/1616-3028(200104)11:2<95::aid-adfm95>3.0.co;2-o
Subject(s) - materials science , wafer , photonic crystal , colloidal crystal , nanotechnology , silicon , optoelectronics , chip , silicon photonics , colloid , electrical engineering , chemical engineering , engineering
This paper surveys recent developments in engineering physics approaches and self‐assembly chemistry methodologies for creating 3D photonic crystals and how this has led to in‐wafer patterned colloidal crystals. These materials are comprised of single crystal micrometer scale features of silica colloidal crystals that have controlled thickness, area, and orientation and are embedded within a single crystal silicon wafer. Two processes for growing opal‐patterned chips are described. One is based upon microfluidic and the other spin coating driven self‐assembly of colloidal silica micro‐spheres within a lithographic patterned silicon wafer.