Dr  C Kalidas retired as Professor, Department of Chemistry, IIT Madras. He was  also an Emeritus Scientist (CSIR), at IIT Madras during 1996–99. He visited the Max Planck  Institute for Physical Chemistry (later known as the Max Planck Institute for  Biophysical Chemistry, Gottingen, Germany) first as a German academic exchange  scholar in 1968–69 and again as a senior fellow of the Alexander von Humboldt  Foundation in 1976–77 and 1990–91. He was a national representative and  subsequently an associate member of the Commision V.8 of IUPAC, Oxford, UK. His  research interests centred around electrochemistry, fast reaction kinetics and  macrocyclic chemistry. He has guided several students for their Ph.D degrees  and published papers in national and international journals. He has more than  three decades of teaching and research experience and is the author (or  co-author) of four books till date.
  Dr M V Sangaranarayanan is currently Dr S R Rajagopalan Institute Chair Professor at the Department of  Chemistry, IIT Madras. He obtained his Ph.D from the Indian Institute of  Science, Bangalore and was subsequently an Alexander von Humboldt Fellow in  Germany. He worked as Scientist at the CSIR–Central Electrochemical Research  Institute, Karaikudi before joining IIT Madras in 1993 where he has been  teaching physical chemistry courses for B.Tech, M.Sc and Ph.D since then. His  research contributions pertain to the analysis of electrochemical systems from  different perspectives. He has published 125 papers in refereed journals and  co-authored Textbook of Physical Chemistry with Universities Press. He is the recipient of the Prof C N R Rao National Prize for  research in chemical sciences in 2017.