Controllable Synthesis And Characterization Of Polymeric Microspheres Photonic Crystals

Photonic crystal consists of two different dielectric constant mediumwith periodic arrangement. Consequently, it meets Bragg reflection, andhas photonic band gap effect which hampers transmission of somefrequency electromagnetic wave, finally, realize the controlling of thephoton. Based on this principle, photonic crystal have some features, justlike photon localization and suppressing the spontaneous emission, havebroad application prospects in the information transmission, displayinginformation and storage industry.The controllable preparation of photonic crystals was studied in thispaper. Microsphere photonic crystal was fabricated with polymericmicrospheres which were prepared by emulsion polymerization, andbased on this template, microporous photonic crystal was prepared.Vertical deposition and spin coating was used to fabricatemicrosphere photonic crystal. Reflection spectra and the arrangement of microspheres were characterized via fiber spectrometer and scanningelectron microscopy (SEM).The influence of deposition temperature,microspheres quality score, microspheres size and refractive index oncontrollable fabrication of photonic crystals by vertical deposition wasanalyzed. Moreover, the influence of microspheres quality score andspinning layers on controllable fabrication of photonic crystals by spincoating was studied. Finally, microsphere photonic crystal with higherreflection intensity and fewer defects was obtained.When microporous photonic crystal was studied, reflection spectraand the arrangement of micropores were characterized via fiberspectrometer and scanning electron microscopy (SEM). The influence ofetching time, different template and refractive index of medium oncontrollable fabrication of inverse opal was analyzed. Finally, threedimensional ordered microporous photonic crystal with higher reflectionintensity was achieved.