Analysis of a calibration method for non-stationary CVD multi-layered graphene-based gas sensors

Filiberto Ricciardella, Tiziana Polichetti, Sten Vollebregt, Brigida Alfano, Ettore Massera, Pasqualina M. Sarro

Research output: Contribution to journalArticleScientificpeer-review

3 Citations (Scopus)
21 Downloads (Pure)


Limitations such as lack of detected stationary signal and slow signal recovery after detection currently affect graphene-based chemi-sensors operating at room temperature. In this work, we model the behavior of a sensor in a test chamber having limited volume and simulating the environmental conditions. From this model, we mathematically derive the calibration method for the sensor. The approach, focused on the time differential of the signal output, is tested on multi-layered graphene (MLG)-based sensors towards the chosen target gas (nitrogen dioxide) in the range from 0.12 to 1.32 ppm. MLG acting as sensing layer is synthesized by chemical vapor deposition. Our study paves the route for a wider applicability of the analysis to calibrate the class of devices affected by non-stationary and recovery issues.
Original languageEnglish
Article number385501
Pages (from-to)1-8
Number of pages8
Issue number38
Publication statusPublished - 2019

Bibliographical note

Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project

Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.


  • calibration
  • gas sensors
  • graphene
  • NO2
  • signal steady state and recovery
  • time-differential signal Output


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