Tuning the effective width of the optical stop band in colloidal photonic crystals

The optical stop band in colloidal crystals is characterized by the central frequency and bandwidth. Although the former is known to be highly tunable by changing the lattice constant, the latter is basically determined by the refractive index contrast between the particles and the background medium...

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Veröffentlicht in:Langmuir : the ACS journal of surfaces and colloids. - 1992. - 23(2007), 7 vom: 27. März, Seite 3503-5
1. Verfasser: Kanai, Toshimitsu (VerfasserIn)
Weitere Verfasser: Sawada, Tsutomu, Toyotama, Akiko, Yamanaka, Junpei, Kitamura, Kenji
Format: Aufsatz
Sprache:English
Veröffentlicht: 2007
Zugriff auf das übergeordnete Werk:Langmuir : the ACS journal of surfaces and colloids
Schlagworte:Journal Article Review Colloids
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520 |a The optical stop band in colloidal crystals is characterized by the central frequency and bandwidth. Although the former is known to be highly tunable by changing the lattice constant, the latter is basically determined by the refractive index contrast between the particles and the background medium that is intrinsic to the materials. In this study, we show that the effective bandwidth in gelled colloidal crystals can also be tuned by controlling the fabrication conditions. Single-domain gelled colloidal crystals were prepared by photopolymerization under various photoirradiation conditions. It was observed that the width of the stop band in the transmission or reflectance spectrum could be expanded by simply adjusting the irradiation time 
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700 1 |a Toyotama, Akiko  |e verfasserin  |4 aut 
700 1 |a Yamanaka, Junpei  |e verfasserin  |4 aut 
700 1 |a Kitamura, Kenji  |e verfasserin  |4 aut 
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