Sensor Used in E-nose - The Electronic Nose Artificial Olfaction Technology - page 161

Fig. 6.15 Schematic of conducting polymer [ 28 ]

• In foodstuffs like beer and other alcoholic beverages.
• Olive oil, orange juices, fishes, and milk.
• Virgin olive oils characterized by different levels of oxidation.

6.7.2 Chemocapacitive Sensor

Capacitive sensors sometimes identified as chemocapacitors are category of
electrochemical sensor. The capacitive sensor consists of two sets of interdigitated
electrode structures, which correspond to the two plates of a standard capacitor
(Fig. 6.16 ). The sensor monitors changes in the dielectric coefficient of the
polymer between electrodes upon analyte absorption. Therefore, chemocapacitors

Fig. 6.16 Chemo capacitor representation