Shubhrajyotsna Aithal and Aithal P.S 2020. Nanotechnology based Mega Machine Design for Large Scale Air Cleaning – Prospects and Challenges . International Journal of Case Studies in Business, IT and Education (IJCSBE). 4, 2 (Dec. 2020), 250–269. DOI:https://doi.org/10.47992/IJCSBE.2581.6942.0094.