Passive Uhf Rfid Tags Made With Graphene Assembly Film-Based Antennas

Ultra-high frequency (UHF) radio frequency identification (RFID) tags with an antenna made of a highly flexible graphene assembly film (GAF) is presented. The superb electrical conductivity (similar to 1.6 x 10(6) S m(-1)) of the GAF results in the tag to reach reading range of similar to 12 m, which is comparable to that of the commercially available metallic counterparts. The performance of the GAF-based RFID tags under mechanical bending and stretching is experimentally evaluated, which demonstrates excellent mechanical stability of the GAF tag than that of metallic tags. Additionally, substrate stability tests are also conducted. The GAF-based UHF RFID tags can thus lead to numerous applications in information exchange, tracking and tracing as well as the Internet of Things (IoT). (C) 2021 Elsevier Ltd. All rights reserved.