Orientation control of the helical nanofilament phase and its chiro-optical applications
발표자
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초록
내용
Chiral liquid crystal (LC) phases show many interesting structural and optical properties when uniaxially oriented. Among the various chiral LC phases, the helical nanofilament (HNF) phase has many potentials to be applied in practical chiro-optical applications due to its mechanical and thermal stability than conventional chiral nematic LC phases. However, until so far, the lack of an orientation tool for the HNF phase hinders further study. In this research, we developed a new method for the uniaxial alignment of the HNF phase and made useful chiro-optical applications such as photonic crystal, chiral sensor, and security code. In detail, the photoalignment process using the azobenzene moieties and optical properties originated from the periodic chiral nanostructures are studied. We believe that these developments can bring further chiro-optical studies based on the fine control of chiral nanostructures.