A comparative study of inverted-opal titania photonic crystals made from polymer and silica colloidal crystal templates

2004 ◽  
Vol 96 (11) ◽  
pp. 5982-5986 ◽  
Author(s):  
Su-Lan Kuai ◽  
Vo-Van Truong ◽  
Alain Haché ◽  
Xing-Fang Hu
Keyword(s):  
Photonic Crystals ◽  
Comparative Study ◽  
Colloidal Crystal ◽  
Silica Colloidal Crystal

Room-Temperature Assembly of Germanium Photonic Crystals through Colloidal Crystal Templating

2007 ◽  
Vol 19 (8) ◽  
pp. 2102-2107 ◽  
Author(s):  
Robert G. Shimmin ◽  
Robert Vajtai ◽  
Richard W. Siegel ◽  
Paul V. Braun
Keyword(s):  
Photonic Crystals ◽  
Room Temperature ◽  
Colloidal Crystal ◽  
Colloidal Crystal Templating

scholarly journals Gravitational Annealing of Colloidal Crystals

2012 ◽  
Vol 323-325 ◽  
pp. 555-558 ◽  
Author(s):  
Yoshihisa Suzuki ◽  
Jin Endoh ◽  
Atsushi Mori ◽  
Tomoki Yabutani ◽  
Katsuhiro Tamura
Keyword(s):  
Colloidal Crystal ◽  
Colloidal Crystals ◽  
Polarized Light ◽  
The Other ◽  
High Gravity ◽  
Silica Colloidal Crystal

A silica colloidal crystal obtained by centrifugation at 9 G for 2 days in water was annealed by additional stronger centrifugation at 50 G for 5 days. The number of the striations observed in the colloidal crystal under crossed polarized light decreased at some parts in a growth container after the additional centrifugation, while the number also increased at the other parts. The decrease probably shows the shrinkage of the stacking disorders under high gravity, while the increase probably shows the production of new stacking disorders.

Fabrication of Silica Colloidal Crystal Multilayer with Controlled Thicknesses by Vertical Deposition

2007 ◽  
Vol 280-283 ◽  
pp. 1149-1152
Author(s):  
Qun Yan Li ◽  
Wei Min Gao ◽  
Yun Fa Chen ◽  
Peng Dong ◽  
Zhen Jiang Wu
Keyword(s):  
Particle Concentration ◽  
Colloidal Crystal ◽  
Normal Incidence ◽  
Deposition Method ◽  
Sem Images ◽  
Vertical Deposition ◽  
Scanning Electron Micrography ◽  
Silica Colloidal Crystal ◽  
Vertical Deposition Method ◽  
Scanning Electron

The silica colloidal crystal multilayers were deposited from ethanol suspensions with different particle concentrations by vertical deposition method. The microstructures and thicknesses of silica colloidal multilayers were characterized by scanning electron micrography. The thicknesses of colloidal crystal multilayers increased with the particle concentration increasing within a certain range of particles concentrations. When the particle concentration exceeded 2.48wt%, the thicknesses of colloidal crystal multilayers didn’t increased with the concentration increasing. Colloidal crystal multilayers with few defects could be deposited from the suspensions with the particle concentration 2.48wt%. The optical properties of the silica colloidal multilayers were investigated by a UV-Vis scanning spectrophotometer in normal incidence. They corresponded well to the microstructure obtained by SEM images.

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