摘要
Label-sensor is an essential component of the label printer which is becoming a most significant tool for the development of Internet of Things(IoT).However,some drawbacks of the traditional infrared label-sensor make the printer fail to realize the high-speed recognition of labels as well as stable printing.Herein,we propose a selfpowered and highly sensitive tribo-label-sensor(TLS)for accurate label identification,positioning and counting by embedding triboelectric nanogenerator into the indispensable roller structure of a label printer.The sensing mechanism,device parameters and deep comparison with infrared sensor are systematically studied both in theory and experiment.As the results,TLS delivers 6 times higher signal magnitude than traditional one.Moreover,TLS is immune to label jitter and temperature variation during fast printing and can also be used for transparent label directly and shows long-term robustness.This work may provide an alternative toolkit with outstanding advantages to improve current label printer and further promote the development of IoT.
基金
supported by the National Key Research and Development Program(2021YFA1201602)
the NSFC(62004017)
the Fundamental Research Funds for the Central Universities(2021CDJQY-019)
J.C.also want to acknowledge the supporting from the Natural Science Foundation of Chongqing(Grant No.cstc2021jcyjmsxmX0746)
the Scientific Research Project of Chongqing Education Committee(Grant No.KJQN202100522).
