| Summary: | 碩士 === 國立交通大學 === 電子物理系所 === 99 === Blue phase liquid crystal (BPLC) is a liquid crystal phase between cholesteric phase and isotropic phase. In the blue phase, two crystal structures, the body-centered cubic and the simple cubic, can be observed. By mixing BPLC with monomers and polymerizing this mixture, the polymer networks would locate at the disclination lines of the BPLC and stabilize the BPLC, forming the “polymer stabilized blue phase liquid crystal (PSBPLC)”. And, the Kerr effect of BPLC could be used in display technology.
This research be divided as the following parts: 1. the relationship between monomer concentrations of BPLC and voltage response; 2. the effects of substrates and different boundaries on BPLC; 3. the effects of monomer recipes on BPLC. By using reflective spectra and Kossel diagrams of the BPLC, the crystal structure and the lattice constant of BPLC are determined. Furthermore, the morphology of the polymer networks in PSBPLC was directly observed by using the Field Emission Scanning Electron Microscopy (FESEM). The FESEM images reveal that the polymer networks are consistent with KiKuchi’s model.
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