Col. Dalvinder Singh Grewal; Ph.D. Management, English, Computer Sc MSc Tech MBA, MA Eng LLB, DIM, ADIM, PGDHRM, PGCTE, PGDTE is an established Educational Administrator, Business Executive & Writer. He is ex-Director of Principal, Guru Nanak Dev Eng College, Ludhiana; Founder Principal, C.T College of Engg, Jalandhar Chairman Electronics J.M.I.T Radour, Yamunanagar Registrar, Sant Longowal Inst of Engg & Techy President (HRD), Trident Group Director, I.I.M.T ex Director Principal, Bhai Maha Singh College of Engg, Muktsar Adviser, Sri Sukhmani Group of Instns, Chandigarh and ex Dean, R & D Desh Bhagat Univ, Mandi Gobindgarh. He is now Prof Emeritus, Eternal University, Baru Sahib, and a research guide for PTU and DBU. He has published 78 books including Fundamentals of Nanotechnology Introduction to Nanoelectronics, Nanotechnology, Scientific Vision of Guru Nanak Word The Master, Global Travels of Guru Nanak and Origin and Development of Universe among others. He has published are over 278 papers and 1100 articles and guided 18 PhDM.Tech students. He served Indian Armed Forces for 32 years and retired as Colonel.