Dr. Akhilendra Pratap Singh is currently working at the Indian Institute of Technology (IIT) Kanpur, India. He received his Master's and Ph.D. in Mechanical Engineering from IIT Kanpur, India in 2010 and 2016, respectively. He worked at the Engine Research Center, University of Wisconsin at Madison, USA as a postdoctoral fellow (2017–2018). His areas of research include advanced low temperature combustion, optical diagnostics with special reference to engine endoscopy and PIV, combustion diagnostics, engine emissions measurement, particulate characterization and their control, and alternative fuels. Dr. Singh has edited 10 books and authored 27 book chapters, 45+ research articles in international journals and conferences. He has been awarded with ISEES Best Ph.D. Thesis Award (2017), SERB Indo-US Postdoctoral Fellowship (2017) and IEI Young Engineer Award (2017). He is a member of numerous professional societies, including SAE, ASME, and ISEES. Prof. Avinash Kumar Agarwal joined the Indian Institute of Technology (IIT) Kanpur, India in 2001 after working as a post-doctoral fellow at the Engine Research Center, University of Wisconsin at Madison, USA. His interests are IC engines, combustion, alternate and conventional fuels, lubricating oil tribology, optical diagnostics, laser ignition, HCCI, emissions and particulate control, and large bore engines. Prof. Agarwal has published 290+ peer reviewed international journal and conference papers, 42 edited books, 78 books chapters and has 10000+ Scopus and 15300+ Google scholar citations. He is a Fellow of SAE (2012), Fellow of ASME (2013), Fellow of ISEES (2015), Fellow of INAE (2015), Fellow of NASI (2018), Fellow of Royal Society of Chemistry (2018), and a Fellow of American Association of Advancement in Science (2020). He is recipient of several prestigious awards such as Clarivate Analytics India Citation Award-2017 in Engineering and Technology, NASI-Reliance Industries Platinum Jubilee Award-2012; INAE Silver Jubilee Young Engineer Award-2012; Dr. C. V. Raman Young Teachers Award: 2011; SAE Ralph R. Teetor Educational Award -2008; INSA Young Scientist Award-2007; UICT Young Scientist Award-2007; INAE Young Engineer Award-2005. Prof. Agarwal received Prestigious Shanti Swarup Bhatnagar Award-2016 in Engineering Sciences. For his outstanding contributions, Prof. Agarwal is conferred upon Sir J C Bose National Fellowship (2019) by SERB.