Dongkun Yu received his MSc degree from Renmin University of China and his Doctoral degree from KTH Royal Institute of Technology in 2020 and 2024, respectively. Currently, he is a research fellow at the Department of Applied Physics, KTH. His research focuses on green solvents (mainly ionic liquids and deep eutectic solvents) and sustainable materials, including chitosan, cellulose, lignin, et al.