Abstract
This work presents the advanced version of novel POSFET (Piezoelectric Oxide Semiconductor Field Effect Transistor) devices based tactile sensing chip. The tactile sensing chip in the new version, presented here, has been fabricated using CMOS (Complementary Metal Oxide Semiconductor) technology. The chip consists of 4 × 4 POSFET touch sensing devices, four temperature diodes, and the electronic circuitry comprising of multiplexers, current mirrors, high compliance current sinks and voltage output buffers. The on chip POSFET devices have linear response in the tested dynamic contact forces range of 0.01-3N and the sensitivity (without amplification) is 102.4 mV/N.
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