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Fabrication of the flexible microrobot. (a) The polydimethylsiloxane (PDMS) mold and the microrobot, (1) the micro-spring; (2) PDMS block (3) first magnet (4) second magnet (5) PDMS mold; (b) fabricated microrobot on the PDMS mold; (c) top, and (d) side views of the microrobot during the steering tests.
