Light-induced Phase Transition of Lyotropic Liquid Crystals and Motion Behavior of Micron Objects via Photochemical Azobenzene Molecules
Su Ma, Yutaka Kuwahara, Tomonari Ogata, Sunnam Kim, Seiji Kurihara
Available Online June 2014.
- https://doi.org/10.2991/icmsa-15.2015.11How to use a DOI?
- Lyotropic liquid crystal, Phase transition, Azobenzene, Motion behavior.
- Ternary lyotropic liquid crystal (LLC), was prepared by mixing tetradecyltrimethylamonium bromide (MTAB), water and azobenzene (Az). The phase transition of the LLC was induced from LC phase to isotropic (I) one upon Ar+ laser, which was owing to the trans-cis-trans phoisomerizaion cycle of Az during the irradiation. After that, the LC phase gradually recovered from I phase to nematic (N) phase when being exposed to dark condition. It was also suggested that the recovery time from I to N was different with the Az structures, temperature and ratio of MTAB/Az in the ternary system. Then, the effect of light irradiation on the motion behavior of micron objects dispersed in the ternary LLC film was studied. It was found that the micron objects which dispersed in the irradiated area moved toward the center of the irradiated area, while the micron objects which dispersed around the irradiated area moved away from the irradiated area.
- Open Access
- This is an open access article distributed under the CC BY-NC license.
Cite this article
TY - CONF AU - Su Ma AU - Yutaka Kuwahara AU - Tomonari Ogata AU - Sunnam Kim AU - Seiji Kurihara PY - 2014/06 DA - 2014/06 TI - Light-induced Phase Transition of Lyotropic Liquid Crystals and Motion Behavior of Micron Objects via Photochemical Azobenzene Molecules BT - 2015 International Conference on Material Science and Applications (icmsa-15) PB - Atlantis Press SP - 57 EP - 62 SN - 2352-541X UR - https://doi.org/10.2991/icmsa-15.2015.11 DO - https://doi.org/10.2991/icmsa-15.2015.11 ID - Ma2014/06 ER -