Enhancing Smart Sensor Tag Sensing Performance-Based on Modified Plasma-Assisted Electrochemical Exfoliated Graphite Nanosheet

Tzu Hsuan Lin, Alan Putranto, Yan Ting Wang, Qing Hao Yang, Ren Jang Wu, Chia Hao Liu, Che Kuan Lin, Murthy Chavali

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

Water that penetrates through cracks in concrete can corrode steel bars. There is a need for reliable and practical seepage sensing technology to prevent failure and determine the necessary maintenance for a concrete structure. Therefore, we propose a modified plasma-assisted electrochemical exfoliated graphite (MPGE) nanosheet smart tag. We conducted a comparative study of standard and modified RFID smart tags with sensor technology for seepage detection in concrete. The performance of both smart tags was tested and verified for seepage sensing in concrete, characterized by sensor code and frequency values. Seepage was simulated by cracking the concrete samples, immersing them for a designated time, and repeating the immersing phase with increasing durations. The test showed that the modified smart tag with 3% MPGE and an additional crosslinking agent provided the best sensitivity compared with the other nanosheet compositions. The presence of 3D segregated structures on the smart tag’s sensing area successfully enhanced the sensitivity performance of seepage detection in concrete structures and is expected to benefit structural health monitoring as a novel non-destructive test method.

Original languageEnglish
Article number5067
JournalPolymers
Volume14
Issue number23
DOIs
StatePublished - Dec 2022

Keywords

  • concrete structure
  • modified RFID
  • nanosheet coating layer
  • non-destructive test
  • seepage detection
  • sensitivity performance

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