Wireless Monitoring of NH3 (Ammonia) Using WO3 Thin Film Sensor

  • J. RoopaEmail author
  • S. G. Divakara
  • S. Lakshmi Prasad
  • A. M. Lakshmikanth
  • Rajath. B. Das
  • K. S. Geetha
  • B. S. Satyanarayana
Conference paper
Part of the Lecture Notes in Networks and Systems book series (LNNS, volume 5)


Food and especially fresh vegetables and fruits have limited shelf life are also easily subject to damage during transport. Natural or damage induced aging lead to foul smell on account of emitted organic or inorganic gases like Hydrogen Sulfide, Ammonia, etc., Reported in this chapter is the study of Tungsten Oxide (WO3) nanoparticles based thin film sensor for sensing Ammonia. Tungsten Oxide Nano particles are deposited as thin film on glass substrate using a sol gel/dip coating process. The chemical properties and electrical properties of these film are characterised using suitably the spectroscopic method like FTIR, XRD and digital multi-meter/circuit. At room temperature the sensors were tested for different concentration of gases. When the concentration of Ammonia gas exceeds a pre-set threshold, the circuit was designed using a microcontroller based circuit to send a message to a recorded user, through a GSM module.


Tungsten oxide XRD (X-ray diffraction) Synthesis Nanoparticles Thin film 


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Copyright information

© Springer Nature Singapore Pte Ltd. 2017

Authors and Affiliations

  • J. Roopa
    • 1
    Email author
  • S. G. Divakara
    • 2
  • S. Lakshmi Prasad
    • 1
  • A. M. Lakshmikanth
    • 1
  • Rajath. B. Das
    • 1
  • K. S. Geetha
    • 1
  • B. S. Satyanarayana
    • 3
  1. 1.Department of Electronics and CommunicationRV College of EngineeringBengaluruIndia
  2. 2.Department of ChemistryRV College of EngineeringBengaluruIndia
  3. 3.Munjal UniversityGurugaonIndia

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