Fig. 5
From: Electroactive materials with tunable response based on block copolymer self-assembly
Response of block copolymers to the applied electric field. a Schematic representation of the measurement setup and devices used for the measurement of the hysteresis loop shape. An AC voltage is applied over a polymer sample sandwiched between gold electrodes. The obtained bipolar D–E hysteresis loops for b P(VDF70-TrFE30), c P2VP-b-P(VDF70-TrFE30)-b-P2VP, d PS-b-P(VDF70-TrFE30)-b-PS, e P2VP-b-P(VDF50-TrFE50)-b-P2VP, obtained at different applied electric fields until electric breakdown. For the better understanding of the switching mechanism, I–E curves are depicted in the inset. The switching characteristics of pristine P(VDF50-TrFE50) are described elsewhere64. Note that all block copolymers demonstrated higher breakdown strength compared to the pristine P(VDF-TrFE)
