Capacitive Hydrostatic Pressure Sensor

Depth Sensing For Physical Oceanography

About:

As part of my graduate coursework in MEMS and sensor system design, I developed and evaluated a conceptual hydrostatic pressure sensor aimed at enabling high-resolution pressure measurements in uniform external pressure fields. By combining mechanical modeling, electro-mechanical transduction principles, and readout architecture design, I gained deep insight into how physical structure and interface circuitry jointly determine sensitivity, linearity, and noise performance in MEMS pressure sensing.


Concepts Utilized:

  • Finite-element analysis (FEA) to simulate stress, displacement, and structural response under uniform external pressure
  • Capacitive transduction to map mechanical deformation into femtofarad-scale capacitance changes suitable for electrical readout
  • Analog interface & noise analysis to assess parasitic capacitance, noise limits, and achievable pressure resolution in the sensor readout
  • Bench-scale physical validation using PLA & 316 stainless steel prototypes to correlate experimental behavior with FEA predictions

  • Credit:

    This project was made with my awesome partner, Evan Twarog.