Guided SH-SAW toluene sensors with mesoporous silica sensitive coatings: Increased sensitivity through mesostructuration control

Thanks to high specific surface areas, mesoporous silica films have been considered as sensitive coatings for guided shear-horizontal surface acoustic wave toluene sensors. In order to increase their sensitivity, the influence on toluene detection of the structuring agent used in the evaporation-ind...

Full description

Saved in:
Bibliographic Details
Published in2010 IEEE Sensors pp. 369 - 372
Main Authors Tetelin, A, Tortissier, G, Blanc, L, Lachaud, J.-L, Dejous, C, Rebière, D, Boissière, C
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.11.2010
Subjects
Chemical sensors
Mesoporous materials
Sensitivity
Silicon compounds
Temperature sensors
Online AccessGet full text

Cover

More Information
Summary:Thanks to high specific surface areas, mesoporous silica films have been considered as sensitive coatings for guided shear-horizontal surface acoustic wave toluene sensors. In order to increase their sensitivity, the influence on toluene detection of the structuring agent used in the evaporation-induced-self assembly fabrication process of these inorganic films has been studied. In this paper, F127 block copolymer is compared to cethyltrimethylammonium bromide (CTAB). Sensors coated with 100 nm thick films structured with CTAB show an average sensitivity of 14 Hz.ppm"1 for toluene concentrations in the 130 1040 ppm range at room temperature, which is 4.5 times higher than the sensitivity obtained with films of similar thicknesses and porosities that were structured with F127.
ISBN:9781424481705
1424481708
ISSN:1930-0395
2168-9229
DOI:10.1109/ICSENS.2010.5690233