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(a) Overall structure and (b) semi-submerged parts of the amphibious microrobot. Reprinted with permission from Ref. [18]. Copyright 2013, Springer. (c) Overall structure and (d) actuator of RoboFly. Reprinted with permission from Ref. [54]. Copyright 2021, IEEE. (e) Microrobotic fish. Reprinted with permission from Ref. [32]. Copyright 2021, Elsevier. (f) Piezoelectric micro swimmer. Reprinted with permission from Ref. [55]. Copyright 2019, Royal Society of Chemistry.
