Bhabha Atomic Research Centre (BARC), Mumbai - 2006

National Physical Laboratories (NPL), New Delhi - 2008

Bhabha Atomic Research Centre (BARC), Mumbai - 2008

Bangalore - 2009

International Seminar on Science and Technology of Glass Materials (ISSTGM-2009), ANU

S.V.R.M. College, Nagaram - 2009

Agra, Delhi - 2010

Gandhigram Rural University, Dindigal  & Madhurai, Tamilnadu - 2010

Centre for Materials for Electronics Technology (CMET), Pune, Maharashtra - 2010

Osmania University, Hyderabad - 2010

Banaras Hindu University, Varanasi, Uttar Pradesh - 2010

Panjab University - Chandigarh, Amritsar, Shimla - 2011

CGCRI, IACS - Kolkata - 2011

Bhabha Atomic Research Centre (BARC), Mumbai - 2012

Delhi,  Jaipur, Agra - 2012

Goa & Shivaji University, Kolhapur  - 2012

International Seminar on Glasses and other Functional Materials - 2014

Ideal College, Kakinada - 2014

University of Kerala, Thiruvananthapuram, Kerala & Kanyakumari - 2014

Vellore Institute of Technology (VIT), Tamilnadu - 2014

Belur, Halebidu, Ooty, Mysore - 2014

Visweswaraiah National Institute of Technology (VNIT), Nagpur - 2015

NIT Warangal - 2015

Dr BR Ambedkar Marathwada University, Aurangabad - Ajanta, Ellora - 2015