Abstract
Colloidal multilayer structures of silica microspheres (or silica opals) have been developed on glass slides using vertical deposition technique. Effect of annealing on structural properties of colloidal silica was investigated using FTIR spectroscopy.Morphology of particles was characterized using atomic force microscopy (AFM). AFM micrographs illustrate the uniform size distribution of silica microspheres in colloidal crystal. With the variation of molarities of reactants, sizes of particles are controlled. Photonic band gap calculations are carried out to show pseudo-photonic band gap of silica opals.Optical characterization proves photonic character of colloidal crystals. It is noticed that forbidden photonic band gap depends on size of spheres forming colloidal crystal. Materials with controllable interesting photonic property are realized by easy and non expensive route and modifying position of stop-band allows to improved engineering of colloidal photonic crystals.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
