3, Kent State University, Kent, Ohio, United States
2, Beam Engineering for Advanced Measurement Co, Orlando, Florida, United States
We present a class of electro-active colloidal composite based on polymer-encapsulated and polymer-stabilized blue phase liquid crystal (PE-PSBPLC) droplets. Encapsulated BPLC droplets are formed in a block copolymer shell via a microfluidic device or emulsification formed by mechanical shearing of a polyvinyl alcohol solution. The encapsulated BPLC in the droplets are stabilized via the polymerization of reactive monomers to extend the BP temperature range. Polymer-stabilized droplets display widened blue phase temperature range from 53°C to below 0°C. The effects of fabrication process and composition on droplet formation and electro-optical behavior as well as the morphological properties of these droplets are reported.