A novel paper-based flexible ammonia gas sensor via silver andSWNT-PABS inkjet printing
作者：printingLianghui Huanga,b, Peng Jiangb, Dong Wanga,?, Yuanfang Luoc, Mufang Lia, Hoseon Leed,Rosario A. Gerhardt
關鍵字：Paper-based flexible sensor,Silver and SWNT-PABS dispersions
論文來源：期刊
發表時間：2014年
The manuscript reports a novel and simple fabrication of paper-based flexible ammonia gas (NH3) sen-sor with silver and poly(m-aminobenzene sulfonic acid) functionalized single-walled carbon nanotubes(SWNT-PABS) via inkjet printing. Silver dispersion was first inkjet printed onto the photo-paper to preparethe electrodes with different configurations. SWNT-PABS dispersion was then printed onto pre-printedsilver electrodes to fabricate the ammonia gas sensor. The rheological behaviors of SWNT-PABS dispersionand surface structures of fabricated sensors were characterized. The effects of electrode configurationand the number of SWNT-PABS printed layers on the electric resistance of sensors were studied. Thepaper-based sensor showed excellent sensor response, short response and recovery time to differentconcentrations of NH3at ppm level, and could be stable for several months. This fabrication methodassembling electrodes and testing parts onto the flexible photo-paper is simpler, more efficient, and costeffective.