Abstract
This work presents the fabrication and temperature sensing properties of the carbon nanotubes-silicon (CNT-Si) nanocomposites based sensors. The multi-walled carbon nanotubes used for the fabrication of sensors have diameter in the range of 10-30, while the silicon powder (1.99 mu m) is obtained by the milling of p-Si crystal wafers containing impurity (boron) concentration of 10(16) cm(-3). For the synthesis of nanocomposites the silicone adhesive (Hero Gum) and organic polymer (GMSA) are used as an binding materials. Four different types of composites are prepared for the fabrication of sensors. Film deposition is carried out by using drop casting and doctor blade technology. In all the sensors entire thickness of composite film is equal to 100 mu m. The temperature sensitivity is found in the range of 0.53 %/degrees C to -0.74 %/degrees C. Depending on composition, ratio of components and kind of adhesive materials the initial resistance values of the sensors are in the range of 260 Omega to 34 k Omega. The simulation of experimental results is carried out by using exponential function and the simulated results are in good agreement with the experimental results.