1. Context

Muriel MERCIER-BONIN is an INRA Research Associate at the Biotechnology-Bioprocesses Laboratory UMR CNRS 5504 - UMR INRA 792, INSA, Toulouse.

Philippe SCHMITZ is Professor at INSA Toulouse and head of the "Biofilm, Bioreactor, Bioseparations" team.

Gaëlle GUILLEMOT is a PhD student at the Biotechnology-Bioprocesses Laboratory.

Bernard DESPAX is CNRS Research Director at the Electrical Engineering Laboratory UMR CNRS 5003, Paul Sabatier University, Toulouse.

Patrice RAYNAUD is a CNRS Research Fellow at the Electrical Engineering Laboratory and head of the "Plasma Materials and Processes" team.