Proving the robustness of a PEDOT:PSS-based thermistor<i>via</i>functionalized graphene oxide–poly(vinylidene fluoride) composite encapsulation for food logistics
Bijendra Bishow Maskey, Kiran Shrestha, Junfeng Sun, Hyejin Park, Jinhwa Park, Sajjan Parajuli, Sagar Shrestha, Younsu Jung, Subramaniyan Ramasundaram, Gyan Raj Koirala, Gyoujin Cho
Abstract
per °C, stable performance, and an acceptable response time (∼40 s per °C) calibrated in the temperature range between -10 °C and 30 °C, resembling the temperature of a cold chain system. For applications in a food cold chain system, this thermistor was integrated into a roll-to-roll (R2R) gravure-printed NFC antenna, a microcontroller-embedded Si-chip transponder, and a printed battery to work as a smart label to wirelessly monitor the time-temperature history (TTH) of a food package. A proof-of-concept study was demonstrated by attaching an NFC-enabled hybrid TTH logger, a smart label, in a chicken package.