Noureddine ISSAOUI is a researcher at the Faculty of Science of Monastir, Tunisia. He received his Master, his PhD and his HDR in physics from the Faculty of Sciences of Monastir, University of Monastir, Tunisia. His main research topic concerns the study of weak interaction, especially the Noncovalent interaction (NCI) like VDR, H-Bond,...... and their effects in the structural, electronic and vibrational proprieties of organic, inorganic or hybrid molecules with different applications.