A Millimeter-Scale, High-Power Density Linear Piezoelectric Resonant Actuator. - Xiangmeng Lv; Zhuangzhuang He; Rongqi Zhu; Bing Wang; Xiangyi Wang; Ronglei Zhu; Zhanmiao Li; Chunli Zhang; Shuxiang Dong (IEEE Trans. Ind. Electron., 2025)