Abstract
We successfully fabricated a core-shell structure in which a shell is composed of cholesteric liuid crystal (CLC) using a microfluidic device. Inner and outer aqueous phases of the shells are composed of aqueous PVA solution, by which we enforce the tangential boundary conditions for the CLC. Comparing spatially mapping of transmittance spectra with numerically simulated photonic band gaps, we found that the helical axes are arranged in a radial fashion. In fact, we found that the CLC shell is a three-dimensional (3-D) spherically-symmetric dye laser resonator.
