| 초록 |
Liquid crystal films coated on substrates undergo dewetting when adhesion force between polymer film and substrate is lower than gas-polymer surface energy. Generally, the dewetting phenomenon occurs in thin film layer less than 100nm. When thick polymer films become thinning partially, however, also generate dewetting phenomenon. When wrinkling is occurred at polymer films, the wrinkles have wavy form, so that cause partial height change. we can observe the unique patterns which co-exist wrinkling and dewetting are made because of those mutual competitive relation. In this study, we explored the wavelength transition in wrinkling and dewetting through thickness change in Liquid Crystal Polymer(LCP) film. Furthermore, as the directionality of the pattern can be tailored by the structural ordering of LCP molecules in the rubbing process of substrate we show anisotropic wrinkle patterns. |
