Flexible sensor encodes tactile stimuli into physiological signals: Page 2 of 2

September 25, 2018 //By Julien Happich
Flexible sensor encodes tactile stimuli into physiological signals
In a paper titled "A skin-inspired tactile sensor for smart prosthetics" published in Science Robotics, researchers from the Ningbo Institute of Materials Technology and Engineering describe a novel membrane-based tactile sensor that couples giant magneto-impedance (GMI) effects with a specially-designed read-out circuitry whose output mimics the action potentials of real skin stimuli.

In their experiments, the new tactile sensor demonstrated a sensitivity of 4.4 kPa−1 (equal to 120 N−1) with a detection limit of 0.3 Pa (equivalently 10μN) in the range of 0 to about 1kPa. The direct transduction of force stimuli into digital frequency remained consistent with the relationship between stimuli and human responses, the authors report, exhibiting the pulse-like stimuli responses of humans even beyond the sensing capacity of tactile mechanoreceptors found in natural limbs.

The authors have secured patents and are now considering to spin out a startup for the commercialization of their skin-inspired tactile sensor.

Ningbo Institute of Materials Technology and Engineering - https://english.nimte.cas.cn/

 

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