Relative humidity and alcohol sensors based on mesoporous silica thin films synthesised from block copolymers

Andrea Bearzotti, Johny Mio Bertolo, Plinio Innocenzi*, Paolo Falcaro, Enrico Traversa

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

39 Scopus citations

Abstract

The response of a new type of based humidity and alcohol vapours sensor has been investigated by means of chemical characterisation and electric measurements. The silica thin film mesoporous sensors were manufactured by dip-coating on substrates with interdigitated electrodes. Large current intensity variation (more than four magnitude orders) as a function of the relative humidity or alcohol presence in the environment has been observed with a more sensitive region for low concentrations. The performance of the sensors has been found to be dependent on the film preparation parameters.

Original languageEnglish (US)
Pages (from-to)107-110
Number of pages4
JournalSensors and Actuators, B: Chemical
Volume95
Issue number1-3
DOIs
StatePublished - Oct 15 2003
Externally publishedYes

Keywords

  • Alcohol sensors
  • Humidity sensors
  • Mesoporous
  • Self-assembling
  • Sol-gel

ASJC Scopus subject areas

  • Analytical Chemistry
  • Electrochemistry
  • Electrical and Electronic Engineering

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