* Corresponding authors

^a Institute for Tropical Technology (ITT)-Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam
E-mail: ltlu@itt.vast.vn

^b Ceramics and Biomaterials Research Group, Ton Duc Thang University, Ho Chi Minh City, Vietnam
E-mail: nguyenvietlong@tdt.edu.vn

^c Faculty of Applied Sciences, Ton Duc Thang University, Ho Chi Minh City, Vietnam

^d Faculty of Chemistry, Hanoi University of Science, Vietnam National University of Science, Hanoi, 19 Le Thanh Tong, Hoan Kiem, Hanoi, Vietnam

^e Institute of Materials Science-Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam

^f Biophysics Group, Department of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT, UK
E-mail: ntk.thanh@ucl.ac.uk

^g UCL Healthcare Biomagnetic and Nanomaterials Laboratories, 21 Albemarle Street, London W1S 4BS, UK

^h Graduate University of Science and Technology, VAST, 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam