Soft Sensor Handles the Pressure
A Texas Engineering research team is solving the problem of pressure-related disruptions in wearable pressure sensors.
"This is the first sensor able to leverage a new hybrid mode to withstand pressure without a significant decay in sensitivity," said the inventor of a new kind of e-tattoo .
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Transcript
00:00:11 flexible pressure sensors are finding exciting applications in robotics prosthetics surgical tools biometric sensors and more past research aimed at increasing the sensitivity of capacity pressure sensors has mostly focused on developing dielectric layers with surface porous structures or high
00:00:37 dielectric constants however such strategies have only been effective in improving sensitivities at low pressure ranges to overcome this well-known obstacle herein a flexible hybrid response pressure sensor composed of an electrically conductive
00:01:00 pores nanocomposite laminated with an ultra-thin dielectric layer was devised using a nickel foam template the pnc was fabricated with carbonyl tube dope equifax to be 86 percent porous and electrically conductive the pnc exhibits hybrid pso resistive mps capacitive responses
00:01:35 resulting in multi-fold enhancement of sensitivity in a large pressure range up to 50 kilopascal the effect of the hybrid responses was differentiated from the effect of the porosity or high dielectric constants by comparing the hrps with its piezo capacitive counterparts
00:02:06 fundamental understanding of the hrps and the prediction of optimal cnt doping were achieved through simplified analytical models hrps was able to measure pressures from as sort of as the temporal arterial pulse to as large as the footstep pressures you