Open AccessCommunication by Nghia Phan Trong Nguyen 1, Minh Ngoc Phan 2, Duc Anh To 3,* and Thang Hung Bui 1,* 1 Institute of Materials Science, Vietnam Academy of Science Technology, Hanoi 11300, Vietnam 2 Graduate School of Science and Technology, Vietnam Academy of Science Technology, Hanoi 11300, Vietnam 3 Vietnam National Space Center, Vietnam Academy of Science Technology, Hanoi 11300, Vietnam * Authors to whom correspondence should be addressed. Appl. Sci.
