Open AccessSynthesis and optical properties of durable opal photonic crystals with high crystalline quality
Author(s) -
Jing Wang,
Chao Yuan,
Huang Zhong-Bing,
Fangqiong Tang
Publication year - 2004
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.53.3054
Subject(s) - materials science , photonic crystal , colloidal crystal , polystyrene , transmission electron microscopy , colloid , scanning electron microscope , optics , substrate (aquarium) , crystal (programming language) , deposition (geology) , nanotechnology , composite material , optoelectronics , chemical engineering , polymer , paleontology , oceanography , physics , sediment , geology , computer science , engineering , biology , programming language
Polystyrene (PS) colloidal crystal multilayers with high crystalline quality are fabricated quickly from aqueous colloidal solutions by the vertical deposition method at certain temperature and humidity. Optical properties, which are determined by the photonic band structure, are discussed by means of light transmission and reflection measurements. By scanning electron microscopy (SEM), the morphology of the samples is characterized and the ordered close package of the spherical colloids in planes parallel to the substrate surface is illustrated. Furthermore, facecenteredcubic (fcc) phase is proved by transmission ele ctron microscope (TEM). To avoid friability and redispersal, the colloidal c rystals multilayers are dried slowed and sintered at 105℃ for 6 hours to enlarg ement of the contact section between nearestneighbor PS spheres. Experiments h ave proved the efficiency and practicability of the method.