Extended Data Fig. 4: Thermal images of the driver unit during working.
From: Encoding of tactile information in hand via skin-integrated wireless haptic interface
a, Thermal image of the bare FPCB. b, Thermal image of the driver unit encapsulated in Ecoflex. c, Optical photograph of the intact driver unit worn on a user’s forearm. d, Thermal image of the intact driver unit worn on a user’s forearm, after WeTac continuously worked for 10 min.
