Fig. 2: Characteristics of visual and haptic sensory channel illustrating the bimodal sensing capability.
From: An artificial sensory neuron with visual-haptic fusion
a The schematic diagram of the BASE for visual-haptic fusion (the sensors are encapsulated by PDMS). b The sheet resistance of the CNT electrodes with different density. Inset: the digital image of the test sample with density of 25 μg cm−2. The error bars are the standard deviations. The scale bar is 1 cm. c The impedance of the PVA hydrogel rod contacted with different electrodes. Inset: the LED connected to different electrodes that are connected with the PVA hydrogel. The drive voltage is 3.0 V with a frequency of 1 kHz. Visual sensory channel characterizations: d IV characterizations; e the EPSC responses to four different intensities (duration: 1 s); f the EPSC responses to four different durations (intensity: 4.8 mW cm−2). Haptic sensory channel characterizations: g IV characterizations; h the EPSC responses to four different intensities (duration: 1 s); i the EPSC responses to four different durations (intensity: 2 kPa).
