A Read-Out System for Disposable Paper-Based Sensors

This study presents design, implementation and test of a read-out system for disposable paper-based sensors. Proposed system basically consists of a Strathmore (R) 300 series Bristol paper-based cantilever with the dimension of lem x 3.5cra and the thickness of roughly 400/art which is covered with a thin piezoresistive layer and a read-out circuitry that is composed of a Wheatstone Bridge circuit and instrumentation amplifier (INA128). Proposed read-out system is simulated, implemented and tested. The sensitivity of the proposed read-out system is measured as 0.25m/V/mu m and Delta V-out and 1.5m Omega/mu m for Delta R-PR.