Technologies Pvt. Ltd. (incubated at IIT Madras Incubation Cell). InnoDI (inno-dee-eye) develops and builds Capacitive De-ionization (CDI) based water treatment systems for the Indian and international market and has established manufacturing facilities. 3. VayuJal Technologies Pvt. Ltd. (incubated at IIT Madras Incubation Cell). Vayujal develops power-efficient atmospheric water generators. 4. AquEasy Innovations Pvt. Ltd. (incubated at IIT Madras Incubation Cell). AquEasy makes an affordable, point of use drinking water purification technologies. 5. Hydromaterials Pvt. Ltd. (incubated at IIT Madras Incubation Cell). Hydromaterials uses new materials for clean water. These technologies have delivered clean water to 10 million people. Several other patents have been licensed. Conceptualised and built state of the art centres for advanced research and technology development, Thematic Unit of Excellence was built for developing new technologies in the water sector. To build such technologies with the participation of the global community, a new centre called the International Centre for Clean Water (ICCW) was built at the IIT Madras Research Park. Books In English 1. T. Pradeep, Nano: The Essentials Understanding Nanoscience and Nanotechnology, Tata McGraw-Hill, New Delhi, 2007, reprinted 2008, 2009, 2010 (twice), 2011, 2012, 2014, 2015, 2015, 2016, 2017, 2018, 2019 and 2020. 2. S. K. Das, S. U. S. Choi, W. Yu, T. Pradeep, Nanofluids Science and Technology, John Wiley, New York (2008). 3. Nano: The Essentials Understanding Nanoscience and Nanotechnology, McGraw-Hill, April 2008. (International edition). 4. Nano: The Essentials Understanding Nanoscience and Nanotechnology, in Japanese, Kyorisu Press, August 2011. 5. T. Pradeep and others, A Textbook on Nanoscience and Nanotechnology, McGraw-Hill Education, New Delhi 2012. (This book is now a textbook in several universities for advanced nanoscience and nanotechnology courses). Reprinted 2014. 6. David E. Reisner and T. Pradeep (Eds.), Aquananotechnology: Global Prospects, CRC Press, New York, 2015. 7. T. Pradeep (Ed.), Atomically Precise Metal Nanoclusters, Elsevier, October 2022. There are several books in which his articles are included. A few are below: 1. Detection and extraction of pesticides from drinking water using nanotechnologies, T. Pradeep and Anshup, in Nanotechnology applications for clean water N. Savage, M. Diallo, J. Duncan, A. Street and R. Sustich (Ed), William Andrew, New York, 2008. 2. Gold nanoparticles, P. R. Sajanlal and T. Pradeep, Kirk-Othmer Encyclopedia (2011). 3. Noble metal nanoparticles, T. S. Sreeprasad and T. Pradeep, Springer Handbook of Nanomaterials, R. Vajtai (Ed.), Springer, Heidelberg, 2013. 4. Noble metal clusters in protein templates, T. Pradeep, A. Baksi and