[PS-13-11] Mechanisms of Polarization Switching in Graphene Oxide and Poly(Vinylidene Fluoride)-Graphene Oxide Films ○Z. Y. Jiang1, G. P. Zheng1, K. Zhan2, Z. Han1,2 (1.The Hong Kong Polytechnic Univ., 2.Univ. of Shanghai for Sci. and Tech.(China))