(12a) Conductive Core-Sheath Nanocables Based Gas Sensors

Wang, Y., University of Connecticut
Jia, W., University of Connecticut
Ding, Y., University of Connecticut
Strout, T., University of Connecticut
Lei, Y., University of Connecticut

Gas sensors are important analytical tools that detect the presence and amount of harmful gases in a certain area. The gas sensor performance and its mechanical properties greatly depend on its design and the construction materials. Nanomaterials create high specific surface area structures, which leads to an increased interaction between the analytes and the sensing materials, thus higher sensitivity could be achieved. On the other hand, conducting polymers (CPs) such as polypyrrole (PPy) and poly(3,4- ethylenedioxythiophene) (PEDOT) are particularly appealing in sensor application due to their ease of synthesis, low operating temperature, and high sensitivity. In this presentation, CP coated core-sheath nanocables will be explored and their sensing performance features, such as sensitivity, durability, time response, long-term stability, and reversibility, will be investigated in detail.