Characterization of Multi-Walled Carbon Nanotube Film Sensor and Ethanol Gas-Sensing Properties
Abstract: Multi-wall carbon
nanotubes (MWNTs) film-based sensor on the substrate of printed circuit board
(PCB) with inter digital electrodes (IDE) were fabricated using layer-by-layer
self-assembly, and the electrical properties of MWNTs film sensor were
investigated through establishing models involved with number of self-assembled
layers and IDE finger gap, and also its ethanol gas-sensing properties with
varying gas concentration are characterized at room temperature. Through
comparing with the thermal evaporation method, the experiment results shown
that the layer-by-layer self-assembled MWNTs film sensor have a faster response
and more sensitive resistance change when exposed to ethanol gas, indicated a
prospective application for ethanol gas detection with high performance and
low-cost.
Keywords: multi-wall carbon
nanotube, layer-by-layer self-assemble, gas sensor, electrical characterization
Author: Dongzhi Zhang, Kai
Wang, Bokai Xia
Journal Code: jptkomputergg130024
