Carbon nanopowder based fragrance sensor

Abstract

The fragrance industry is a huge profit making industry and consulting agencies forecast further increase in the coming years. But every year it loses its profit because of counterfeit products. Detection of fake products and quality control of deodorants is of high importance for the fragrance industry [1, 2]. In this paper we propose a method to identify two different deodorants by adsorption on carbon nano ink sensors by measuring the variation of film resistance. The same sensor can also be used for food borne pathogen detection to prevent problem related to health and safety. The sensing element comprises of a planar interdigitated electrode over which carbon nano ink thick film is spin coated. When the active layer of sensor is exposed to aromatic molecules, the electrical resistance of carbon nano ink film dramatically changes. The advantages of this sensor include short response time, high sensitivity and reusability.