Real-time humidity sensing by integration of copper sulfide nanocomposite with low-cost and wireless Arduino platform

Morad Zouheir, Mohammed Zniber, Syeda Qudsia, Tan Phat Huynh*

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

Abstract

In this study, the (copper sulfide)-carrageenan nanocomposite was grown from the interface of gel (Cu-complexed carrageenan) and liquid (sulfide solution). The thin film of the nanocomposite was coated on a platinum interdigitated electrode in order to be used as a relative humidity (RH) sensor. Data from the sensor was acquired by the low-cost, wireless and portable data acquisition hardware (DAQ) device built from the Arduino and 16-bit analog-to-digital converter. The LabVIEW VI was programmed to plot and save voltage output received from the prototype through Bluetooth communication. The sensor responses to RH variation were compared simultaneously with a reference sensor installed in the same prototype, which allows a real-time data acquisition of high accuracy. Importantly, the sensor exhibited a high reversibility as well as a linear response towards RH between 8% and 80 %.

Original languageEnglish
Article number112541
JournalSensors and Actuators, A: Physical
Volume319
DOIs
Publication statusPublished - 1 Mar 2021
MoE publication typeA1 Journal article-refereed

Keywords

  • Arduino
  • Copper sulfide
  • Real-time instrumentation
  • Relative humidity
  • Sensor
  • Wireless communication

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