Morphology and Reflection Patterns of LC/fluorocarbon oil Janus Droplets
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Uniform-sized liquid crystal-fluorocarbon oil janus droplets were prepared by a microfluidics method with a reactive mesogen mixture of RMM727 (from Merck) doped with a chiral dopant 4-cyano-4ʹ-(2-methylbutyl)-biphenyl (CB15). As the solvent evaporates, janus droplets were produced after the phase separation of liquid crystal and fluorocarbon oil. The morphology of janus particles were controlled by interfacial tension with surrounding materials. Various surfactants were used to control the interfacial tension, and to observe the morphology changes of the droplet. Due to the difference in refractive index between fluoro phase and liquid crystal phase, the reflection pattern of light changes as morphology changes. The unique reflection pattern of light from janus droplets were demonstrate.