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. 2020 Sep 3;7(22):2001662. doi: 10.1002/advs.202001662

Figure 1.

Figure 1

Structure of ATFES device. a) Schematic of the biological tactile perception system: (i) the tactile sensory receptor, (iii) synapse, (v) primary somatosensory cortex in brain, and the corresponding artificial tactile learning e‐skin based on Fe‐FET device: (ii) artificial tactile reception system with dome‐shaped elastomeric gate electrode and ferroelectric layer below it, (iv) the artificial synapse has excess carriers corresponding to neurotransmitters that arise from ferroelectric dipoles, (vi) an array of artificial tactile learning devices on the skin which is equivalent to the cortex neural network. b) Photograph of 4 × 4  array of ATFES device with a pressure‐sensitive PEDOT:PSS gate electrodes. The inset is an optical microscope image of Au/P3HT/P(VDF‐TrFE) of an ATFES device. c) Cross‐sectional TEM image of an ATFES device, and d) PFM image of P(VDF‐TrFE) layer at the contact area boundary.