HYU Distinguished Professor 

 Air Quality & Materials Application Lab,

Department of Civil & Environmental Engineering, 

Hanyang University, 

222 Wangsimni-Ro, Seoul 04763, Korea

HYU Emeritus Professor (Rtd.)

26 Twyniago, Pontarddulais, Swansea,

Wales, UK, SA4 8HX.

Professor 

Room No-112,  Advance Materials and Chemical Engineering Building (204),  

Hanyang University, 222 Wangsimni-Ro, 

Seoul,  04763, ROK.

Materials Scientist (Retd.)

Indira Gandhi Center for Atomic Research,

Kalpakkam, Tamil Nadu, 603102, India,

Professor, Head of the Department of Physics, and Dean, Faculty of Science

DDU Gorakhpur University,

Department of Physics,

Gorakhpur, Uttar Pradesh,

273009, India