Dr Saloua Mohamed Helali is an associate professor in physics in university of Tabuk, KSA She obtained his master degrees in “ physics Quantic at Faculty of Sciences of Tunis, University of Tunis El Manar, Tunisia in 2002 than a PhD thesis from Ecole Centrale of Lyon (France) and Faculty of Sciences of Tunis, University of Tunis El Manar, Tunisia in 2005 She obtained a Habilitation in Physics in Tunisia in 2011 Her research interest focused on the development of electrochemical sensors and biosensors, the development of nanostructured electro catalysts She has published 49 articles (1500 citations, h-index 24), three book chapters She has supervised 10 MSc and 1 PhD students