P1.4.3 Humidity sensing of poly(diallyldimethylammonium chloride)/single-walled carbon nanotube composite films fabricated by self-assembly technique

Hongjun Jing, Yadong Jiang, Xiaosong Du, Huiling Tai & Guangzhong Xie
Single-walled carbon nanotube composite films were prepared on quartz crystal microbalance by self-assembly process, and their properties to relative humidity ranging from 20.9% to 80.2% were studied at room temperature. The treated SWNTs were characterized by Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy. Two kinds of SWNT sensors were fabricated using original SWNTs and carboxyl modified SWNTs as humidity sensitive material, respectively. The results showed that the sensitivity of the PDDA/SWNT-COOH humidity sensor was...