1,095 research outputs found
Temperature tuning of the stop band in transmission spectra of liquid-crystal infiltrated synthetic opal as tunable photonic crystal
No full textThis article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Katsumi Yoshino, Yuki Shimoda, Yoshiaki Kawagishi, Keizo Nakayama, and Masanori Ozaki, Appl. Phys. Lett. 75, 932 (1999) and may be found at https://doi.org/10.1063/1.124558.Nematic liquid crystals and smectic liquid crystals can be infiltrated into a three-dimensional periodic array of interconnected nanosize voids in opal films prepared by sedimentation of SiO2 spheres of various diameters. The optical stop band in the transmission spectra of opals shifts drastically by the infiltration of liquid crystals. The stop band is also found to shift at the phase transition points with changing temperature. This effect enables the tuning of optical properties of opals as a prototype tunable photonic crystal. This phenomenon can also be used as a measurement method for the refractive index
Development of Novel Microsphere and Microballoon DDSs by Polymeric Spherical Crystallization
No full textEffects of Catechin Gallate on Bactericidal Action and Leukotoxic Activity of Aggregatibacter actinomycetemcomitans
No full textFuture Perspectives of PLGA Nanospheres for Advanced DDSs and Continuous Preparation Systems for Spherical Crystallizers
No full textDevelopment of a PLGA-Nanosphere DDS Prepared by Spherical Crystallization with a Polymer
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