Title :
Detection and discrimination of alcohol vapours using single-step anodised nanoporous alumina sensors
Author :
Kocanda, Martin ; Haji-Sheikh, Michael ; Ballantine, David S.
Author_Institution :
Dept. of Chem. & Biochem., Northern Illinois Univ., DeKalb, IL
fDate :
Nov. 30 2008-Dec. 3 2008
Abstract :
The electrical response of single-step anodised alumina sensors to alcohol vapours containing one to four carbon atoms has been studied. In this investigation, the real and imaginary impedance components have been measured in response to the equilibrium saturation vapour pressure of methanol, ethanol, butanol and two structural isomers of propanol. The response to each type of alcohol produces characteristic impedance spectra that allow discrimination and possible recognition of each alcohol.
Keywords :
nanoporous materials; nanosensors; Cole-Cole plot; alcohol vapours; impedance spectroscopy; single-step anodised nanoporous alumina sensors; Aluminum oxide; Bonding; Ceramics; Chemical sensors; Conducting materials; Glass; Impedance; Nanoporous materials; Polymers; Surface morphology; Cole-Cole plot; anodisation; impedance spectroscopy; nanoporous anodised aluminum oxide;
Conference_Titel :
Sensing Technology, 2008. ICST 2008. 3rd International Conference on
Conference_Location :
Tainan
Print_ISBN :
978-1-4244-2176-3
Electronic_ISBN :
978-1-4244-2177-0
DOI :
10.1109/ICSENST.2008.4757191
