Monolithic and scalable capacitive electrodes leveraging parasitic capacitance for full-body pressure mapping.

A monolithic capacitive pressure sensor array with co-integrated electrodes achieves 30 Hz full-body pressure mapping using a 2911-cell (1.7 m by 1.0 m) design with high linearity (R 2 = 0.994).

• Why it matters: Scaling capacitive pressure sensor arrays over large areas is limited by electrode alignment errors, complex fabrication, and restricted dynamic range in conventional parallel-plate designs.
• What they did: The work uses a monolithic electrode architecture with transmitter and receiver electrodes on one substrate, plus a deformable dielectric and a floating ground layer to remove alignment errors and cut layer stacking by 20%.
• The result: By intentionally using parasitic capacitance for sensing and electromagnetic interference shielding, the array enables stable pressure detection and supports sleep posture classification, pressure injury prevention, and exercise monitoring.

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