Wireless Strain Sensor for Structural Health Monitoring (SHM) Applications

Based on the RFID sensing technology, A flexible strain sensor has been developed based on the LC circuit where the capacitance is considered as a sensing unit. To increase the sensor sensitivity, nano cracks have been introduced to the electrodes to create a piezoresistive effect that leads to a transmission line behavior of the capacitance. The unconventional change in capacitance of the LC oscillator reflects a sensitive shifting in resonance frequency of the flexible circuit, producing a sensitive wireless strain sensor with a Gauge factor of 50 for less than 1% strain.

Conference/Event Name
PSE Annual Research Expo

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