Material engineering and manufacturing IV : Selected, peer-reviewed papers from the 5th ICMEM, 4th ICMDA, and 5th ICMENS / by International Conference on Material Engineering and Manufacturing (5th : 2021 : Online), Toriumi, Akira, editor 642249, Omatsu, Takashige, editor 642250, International Conference on Materials Design and Applications (4th : 2021 : Online), International Conference on Materials Engineering and Nano Sciences (5th : 2021 : Online)