  This paper presents a chemical microwave flexible sensor based on a resonant
electromagnetic transducer in micro-strip technology with poly
(3,4-ethylenedioxythiophene) polystyrene sulfonate -- multi wall carbon
nanotubes (PEDOT:PSS-MWCNTs) as sensitive material for Volatile Organic
Compounds (VOCs) detection. The results show a high sensitivity to ethanol and
toluene vapors on the S parameters of a passive resonator over a large
frequency range. It is equal to -1.59 kHz/ppm and -1.45 kHz/ppm for ethanol and
toluene vapors respectively. This kind of sensor can be integrated into
real-time multi-sensing platform adaptable for the Internet of Things (IoT).
