Enhanced electromechanical coupling in piezoelectric MEMS vibration energy harvesters via strain-induced phase transition in Mn-doped bismuth ferrite epitaxial films. - Aphayvong S; Takagi M; Fujihara K; Fujibayashi Y; Fujimura N; Yamane H; Murakami S; Yoshimura T (Microsystems & nanoengineering, 2026)