C. WongchoosukS. ChoopunA. TuantranontT. KerdcharoenMahidol UniversityChiang Mai UniversityNational Electronic and Computer Technology Center2018-09-132018-09-132009-09-01Materials Research Innovations. Vol.13, No.3 (2009), 185-188143289172-s2.0-70149097149https://repository.li.mahidol.ac.th/handle/20.500.14594/27552Pure and 10% w/w Au-doped zinc oxide (ZnO) nanostructure sensors were produced and used as sensing devices in a portable electronic nose (E-nose). The nanosensors were prepared using thermal oxidation technique with sintering temperature at 700°C under oxygen atmosphere at a flow rate of 500 mL min-1. The sensors were demonstrated to be sensitive to various volatile organic compounds (VOCs), especially ethanol vapour. The E-nose even with only two sensors was efficient to discriminate a number of selected VOCs. The Au-doped sensor shows a significant improvement of sensitivity. The portable E-nose can detect the difference between alcohol beverages and alcohol solutions and can distinguish the difference of white and red wines having the same percentage of alcohol. © W. S. Maney & Son Ltd. 2009.Mahidol UniversityEngineeringMaterials SciencePhysics and AstronomyConference PaperSCOPUS10.1179/143307509X437572