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

Research output: Contribution to journalArticleResearchpeer-review

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
Pages (from-to)107-110
Number of pages4
JournalSensors and Actuators / B, Chemical
Volume95
Issue number1-3
DOIs
Publication statusPublished - 15 Oct 2003
Externally publishedYes

Fingerprint

block copolymers
Silicon Dioxide
Block copolymers
humidity
Atmospheric humidity
alcohols
Alcohols
Silica
silicon dioxide
Thin films
sensors
Sensors
thin films
Electric variables measurement
Film preparation
coating
low concentrations
Vapors
vapors
Coatings

Keywords

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

ASJC Scopus subject areas

  • Analytical Chemistry
  • Electrochemistry
  • Electrical and Electronic Engineering

Cite this

Relative humidity and alcohol sensors based on mesoporous silica thin films synthesised from block copolymers. / Bearzotti, Andrea; Mio Bertolo, Johny; Innocenzi, Plinio; Falcaro, Paolo; Traversa, Enrico.

In: Sensors and Actuators / B, Chemical, Vol. 95, No. 1-3, 15.10.2003, p. 107-110.

Research output: Contribution to journalArticleResearchpeer-review

Bearzotti, Andrea ; Mio Bertolo, Johny ; Innocenzi, Plinio ; Falcaro, Paolo ; Traversa, Enrico. / Relative humidity and alcohol sensors based on mesoporous silica thin films synthesised from block copolymers. In: Sensors and Actuators / B, Chemical. 2003 ; Vol. 95, No. 1-3. pp. 107-110.
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