title: Might silicon surface be used for electronic tongue application?
abstract: An electronic tongue concept based on 2D mapping of photogenerated charge carrier lifetimes in silicon put in contact with different liquids is reported. Such method based on intrinsic sensitivity of the silicon surface states to the surrounding studied liquids allows creation of their characteristic electronic fingerprints. To increase recognition reliability, a set of characteristic fingerprints for a given liquid/silicon interface is proposed to be recorded at different bias voltages. The applicative potential of our sensing concept was demonstrated for different spirits and water samples.
authors.affiliation: Institute of High Technologies, Taras Shevchenko National University of Kyiv , 60 Volodimirska Street, 01033 Kiev, Ukraine.
authors.forename: S V
authors.initials: SV
authors.lastname: Litvinenko
authors.forename: D
authors.initials: D
authors.lastname: Bielobrov
authors.forename: V
authors.initials: V
authors.lastname: Lysenko
authors.forename: T
authors.initials: T
authors.lastname: Nychyporuk
authors.forename: V A
authors.initials: VA
authors.lastname: Skryshevsky
mesh_terms: D001628:Beverages / Q000032:analysis*; D055664:Electrochemical Techniques / Q000295:instrumentation*; D008954:Models, Biological; D025341:Principal Component Analysis; D012825:Silicon / Q000737:chemistry*; D013499:Surface Properties; D014059:Tongue / Q000502:physiology*
chemical_list: D012825:Silicon
keywords: electronic tongue; lifetime of charge carriers; recognition of substances; silicon; surface electronic states