Characterization of industrial coolant fluids and continuous ageing monitoring by wireless node-enabled fiber optic sensors - Sachat, Alexandros el (Institut Català de Nanociència i Nanotecnologia) ; Meristoudi, Anastasia (National Hellenic Research Foundation, Theoretical and Physical Chemistry Institute) ; Markos, Christos (National Hellenic Research Foundation, Theoretical and Physical Chemistry Institute) ; Sakellariou, Andreas (PRISMA Electronics S.A.) ; Papadopoulos, Aggelos (Kleemann S.A.) ; Katsikas, Serafim (PRISMA Electronics S.A.) ; Riziotis, Christos (National Hellenic Research Foundation, Theoretical and Physical Chemistry Institute.)