Fig. 4From: A review: flexible, stretchable multifunctional sensors and actuators for heart arrhythmia therapy(Reproduced with permission from Ref. [37], © 2015 WILEY VCH Verlag GmbH & Co. KGaA, Weinheim)An image attached to the outer wall of the rabbit heart with an elastic membrane containing a multifunctional sensor capable of providing electrical stimulation (the white arrows indicate the electrodes of the sensor and the fractal structure)Back to article page