Micro sized interdigital capacitor for gases detection based on graphene oxide coating

Ignacio Vitoria*, Dayron Armas, Carlos Coronel, Manuel Algarra, Carlos Ruiz Zamarreño, Ignacio R. Matias, Subhas C. Mukhopadhyay

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contributionpeer-review

Abstract

A micro sized interdigital capacitor sensible to CO2 and NO is studied in this work. The photolithography technique enables to obtain fingers with dimensions of 10 × 500 µm and separated 7 µm between them. The deposition of a film composed of graphene oxide particles as the dielectrics of the capacitor allows to measure the gas concentration of CO2 and NO mixed with N2. The sensors were characterized in a gas chamber with a constant flow, obtaining promising results in changes of capacitance at 100 Hz. The sensors have a good linearity and sensitivity with a R2 = 0.996 and 5.026·10–1 pF/% v/v for CO2 and R2 = 0.972 and 1.433·10–1 pF/ppb for NO.

Original languageEnglish
Title of host publicationSensing technology
Subtitle of host publicationproceedings of ICST'15
EditorsNagender Kumar Suryadevara, Boby George, Krishanthi P. Jayasundera, Subhas Chandra Mukhopadhyay
Place of PublicationCham
PublisherSpringer, Springer Nature
Pages24-30
Number of pages7
ISBN (Electronic)9783031298714
ISBN (Print)9783031298707, 9783031298738
DOIs
Publication statusPublished - 2023
Event15th International Conference on Sensing Technology, ICST 2022 - Sydney, Australia
Duration: 5 Dec 20227 Dec 2022

Publication series

NameLecture Notes in Electrical Engineering
PublisherSpringer
Volume1035
ISSN (Print)1876-1100
ISSN (Electronic)1876-1119

Conference

Conference15th International Conference on Sensing Technology, ICST 2022
Country/TerritoryAustralia
CitySydney
Period5/12/227/12/22

Keywords

  • Interdigital
  • Gas Sensor
  • Graphene Oxide
  • Photolithography

Fingerprint

Dive into the research topics of 'Micro sized interdigital capacitor for gases detection based on graphene oxide coating'. Together they form a unique fingerprint.

Cite this