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NFC-Enabled Dual-Channel Flexible Printed Sensor Tag.

Jonghyun Choi1, Ian Visagie1, Yi Chen2

  • 1The New Zealand Institute for Plant and Food Research Ltd., Private Bag 3230, Waikato Mail Centre, Hamilton 3240, New Zealand.

Sensors (Basel, Switzerland)
|August 12, 2023
PubMed
Summary
This summary is machine-generated.

This study introduces a dual-channel wireless sensor tag capable of simultaneously measuring temperature and ethylene gas. This innovation is ideal for smart packaging applications, enhancing the monitoring of fresh produce quality.

Keywords:
PETcapacitive sensorethyleneflexible tagnear-field communicationpackagingprinted electronicsresistive sensorsensor tagtemperature

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Area of Science:

  • Materials Science
  • Electrical Engineering
  • Sensor Technology

Background:

  • Flexible wireless sensor tags are increasingly important for various applications.
  • Current sensor tags often lack multi-sensing capabilities, limiting their utility.
  • Dual-channel sensing offers enhanced data acquisition for complex monitoring tasks.

Purpose of the Study:

  • To design and develop a compact printed circuit board (PCB) module for near-field communication (NFC)-enabled dual-channel sensor tags.
  • To integrate electrical resistance and capacitance read-out channels for simultaneous sensing.
  • To demonstrate the functionality of the sensor tag for temperature and ethylene gas detection.

Main Methods:

  • A 13 mm × 13 mm PCB module was designed with integrated square antenna on a flexible poly(ethylene terephthalate) (PET) substrate.
  • Temperature sensing was achieved using a positive temperature coefficient ink.
  • Ethylene gas sensing utilized tin oxide (SnO2) nanoparticle ink.
  • NFC technology enabled wireless data readout for both sensing channels.

Main Results:

  • The developed sensor tag successfully demonstrated dual-channel sensing capabilities for both temperature and ethylene gas.
  • The integration of a flexible antenna on a PET substrate within the PCB module was achieved.
  • The sensor tag's performance was validated for monitoring environmental conditions.

Conclusions:

  • The novel dual-channel wireless sensor tag provides a versatile platform for advanced sensing applications.
  • This technology is particularly suitable for smart packaging solutions to monitor the quality of perishable goods.
  • The compact and flexible design facilitates integration into various packaging formats for real-time quality tracking.