Carbon Nanotube Field Effect Transistor-Based Piezo/Pyro-Sensor

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For the sensitivity improvement and the miniaturization of piezo/pyro-sensors, the purpose of this project is to develop the piezoelectrically / pyroelectrically modulated conductive sensor consisting of carbon nanotube field effect transistor (SWNT-FET), which acts as a highly-sensitive charge sensor, and piezoelectric / pyroelectric polymer, and to study its sensor responses to the applied force and the light illumination. A device using a semiconducting-enriched SWNT thin film deposited on a poled PVDF film was fabricated and its sensor responses to the compressive pressure and the bending strain was measured. The sensor responses were enhanced by covering SWNT film with ion gel.