Fig. 3: The temporal information-processing function of the artificial system.
a Schematic diagram of the function of slow adapting receptors. b The output voltage-pressure curve of the oscillator triggered by the flexible tactile sensor, indicating the pulse frequency can be modulated by the applied force. Line with different colors correspond to the magnitude and duration of pressure, I, II, III, and IV correspond to (0.39 N, 0.5 s), (6.87 N, 0.5 s), (24.6 N, 0.5 s), and (24.6 N, 1 s), respectively. c The postsynaptic current curves of the flexible synaptic transistor connecting with the flexible tactile sensor and oscillator under different magnitude of pressure, indicating that our system can achieve the EPSC functions triggered by different pressure. The blue, orange and purple curves represent the magnitudes of the pressure of 15.2, 25.1, and 30.4 N, respectively. d The EPSC curves of our fabricated systems under various pressure durations with the same magnitude of 25.1 N, indicating that the EPSCs increasing with the pressure durations. The purple, orange, and green curves indicate the duration of the pressure of 1, 1.9, and 2.8 s, respectively. e The ratio between the maximum value and the initial value of Ipost for different pressure magnitudes and durations.
