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Integration of Colloidal Photonic Crystals toward Miniaturized Spectrometers
Author(s) -
Kim ShinHyun,
Park Hyo Sung,
Choi Jae Hoon,
Shim Jae Won,
Yang SeungMan
Publication year - 2010
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.200902456
Subject(s) - materials science , photopolymer , photonic crystal , photonics , photonic bandgap , spectrometer , colloidal crystal , optoelectronics , colloid , structural coloration , nanotechnology , polymer , optics , chemical engineering , polymerization , composite material , engineering , physics
Integrated colloidal photonic crystals with different bandgaps are prepared by molding photocurable SiO 2 suspensions and subsequent photopolymerization under UV irradiation. The suspensions show spontaneous crystallization of SiO 2 particles and reflect iridescent colors (see figure). The bandgap position is precisely controlled by the particle volume fraction. Such photonic structures can be used as mini‐spectrometers in lab‐on‐a‐chip devices, and various optical applications.