Eleftheria Zelou is a PhD strudent in Chemistry and Environmental Sciences, working in collaboration between IMSE (Université Gustave Eiffel) and ITODYS (Université Paris Cité) laboratories, under the supervision of Bérengère Lebental, Benoît Piro and Samia Zrig. Her thesis topic is the development of carbon nanotube-based chemical transistor arrays functionalized with chemical and biological probes for monitoring of viral/bacterial contamination in water of HVAC (heating, ventilation, air-conditioning) systems.