The human skin has afferents that either encode stimulus intensity or change in intensity at frequencies of up to 600 Hz. The advantage of using neuromorphic skin is the sparsity of output events, as events are only generated when the stimulus intensity either changes or a stimulus is applied. In this project, we aim to mimic human afferents exploiting the inherent properties of a variety of different pressure transducers with different bandwidths and sensitivities. We are exploring capacitive, resistive, and piezoelectric materials, with the aim of combining them for a hybrid skin capable of reacting to a broad range of tactile stimuli with low latency and low power consumption.
We have just sent out a first test chip with prototype circuits for fabrication, in collaboration with the Bio-Inspired Circuits and Systems group at the University of Groningen!
Methods & Tools: Subthreshold mixed-mode CMOS circuits, Design, simulation, and layout using Cadence Virtuoso, Monte-Carlo and noise simulations
People: Ella Janotte