Characterization of flexoelectric effect of unpolarized BST under impact loading Mengzhou Chang, Ke Li, Kai Guo, Chuang Chen and Enling Tang Eur. Phys. J. Plus, 138 2 (2023) 125 Published online: 06 February 2023 DOI: 10.1140/epjp/s13360-023-03727-6