Figure 5. Characterization of the artificial temperature perception neurons. a) The circuit diagram of the temperature perception neuron. b) IV curves of the VO2 volatile memristor with different temperatures. c) The temperature dependence of the threshold voltage (V th) and hold voltage (V hold) extracted from the I-Vcharacteristic of Figure 5b. d) Oscillation frequency as a function of load resistance (R L) with different temperatures from 284 to 306 K. e) Neuronal response of the temperature perception neuron under the varying temperature with R L of 3.6 kΩ and a constant bias voltage (5 V, 20 μs). The output frequencies increases from 0.3 to 0.8 MHz as the temperature increases from 284 to 306 K.