A flexible and multifunctional electronic nose using polyaniline/cotton fibrous membrane with a hierarchical structure

Haizhou Liu, Yunhui Wu, Song Chen, Shuqi Liu, Pingping Wang, Feng Xue, Lan Liu*

Abstract

A novel flexible electronic nose (E-nose) with multiple sensing capabilities of gas/pressure/temperature is achieved by coating interfacial polymerized polyaniline (PANI) nanofibers on porous cotton textile. The E-nose has a competitive detecting ability of ammonia gas compared to the reported PANI-based material, achieving super low detection limit (1 ppm) as well as high sensitivity (10.3 for 50 ppm) due to the high surface area of hierarchical PANI nanofibers. Further-more, the as-prepared E-nose possesses highly sensitive pressure response (0.073/kPa) and effective monitoring of temperature (0.44 /℃).This work significantly enriches the E-nose’s functions to three further, which makes the E-nose more humanoid with sensing capabilities of smell, tactility, and hot/cold perception.

文章链接：https://www.sciencedirect.com/science/article/pii/S0167577X18314228