Highly Sensitive, Printable Nanostructured Conductive Polymer Wireless Sensor for Food Spoilage Detection

• DOI: 10.1021/acs.nanolett.8b01825
• Publication Date: 2018-06-27T12:03:10Z
• Authors: Zhong Ma; Ping Chen; Wen Cheng; Kun Yan; Lijia Pan; Yi Shi; Guihua Yu
• Keywords: Active packaging; Microsystem

Near-field communication (NFC) labeling technology has been recently used to endow smartphones with nonline-of-sight sensing functions improve the environment, human health, and quality of life. For applications in detecting food spoilage, development a sensor high enough sensitivity act as switch for an NFC tag remains challenge. In this Letter, we developed nanostructured conductive polymer-based gas ΔR/R0 = 225% toward 5 ppm ammonia NH3 unprecedented sensitivities 46% 17% putrescine cadaverine, respectively. The plays critical role sensitive circuit enables smartphone readout meat spoilage when concentration biogenic amines is over preset threshold. We envision broad potential use such intelligent status monitoring daily life, storage supply chains.