Modeling and Analysis of Pressure Sensor with Single Walled Carbon Nanotubes for Piezoresistive Transduction

The paper deals with modeling of piezoresisitive pressure sensors with Single Walled Carbon Nanotubes (SWCNTs) located on square diaphragm in three different orientations using COMSOL Multiphysics. The sensitivity of the pressure sensors with these configurations are evaluated. The output voltage responses of all three cases are plotted and compared. It is found that the response of the proposed configuration with two SWCNTs diametrically opposite at the edge and other two near the center has a sensitivity of 0.23 mV/kPa which is about 43% better in comparison to the other two configurations studied earlier.