Fig. 3From: A review: flexible, stretchable multifunctional sensors and actuators for heart arrhythmia therapy(Reproduced with permission from Ref. [36], Copyright © 2014, Rights Managed by Nature Publishing Group)3D-MIMs a 3D-MIM attached to the outer wall of the heart (white arrows indicate the positions of the sensors with different functions). Scale bars 6 mm. b An enlarged image of sensors with each function. Scale bars 500 mmBack to article page