1. Materials Science Division; Poornaprajna Institute of Scientific Research (PPISR), Bidalur post, Devanahalli; Bangalore-562164 India.
2. Hindustan Petroleum Green Research and Development Centre (HPGRDC); Hindustan Petroleum Corporation Ltd. (HPCL); KIADB Industrial Area, Tarabahalli, Hoskote Taluk; Bangalore-560067 India