VNU Journal of Science Mathematics – Physics, Vol 37, No 4 (2021) 17 23 17 Original Article Fabricating Microsphere Lasers by Protein Dehydration A Fast Fabrication Method and Excellent Lasing Properties Nguyen Van Toan1,2, Pham Van Nhat3, Ta Van Duong1,* 1Le Quy Don Technical University, 236 Hoang Quoc Viet, Hanoi, Vietnam 2VNU University of Science, 334 Nguyen Trai, Hanoi, Vietnam 3University of Science and Technology VAST, 18 Hoang Quoc Viet, Hanoi, Vietnam Received 15 November 2020 Revised 1[.]