Fig. 12: Tactile sensors with different transduction mechanisms.
From: Active electronic skin: an interface towards ambient haptic feedback on physical surfaces

a Resistive Sensor. Reproduced with permission204. Copyright 2014, American Chemical Society. b Capacitive Sensor. Reproduced with permission196. Copyright 2014, Springer Nature. c Piezoelectric Sensor. Reproduced with permission225. Copyright 2018, IOP Publishing. d Electromagnetic Sensor. Reproduced with permission237. Copyright 2021, AAAS. e Temperature Sensor. Reproduced with permission251. Copyright 2015, Springer Nature. f Optoelectronic Sensor. Reproduced with permission253. Copyright 2019, AAAS. g Triboelectric Sensor. Reproduced with permission257. Copyright 2012, American Chemical Society.