Formation of Graded TiO 2 Layer on Ti Wire by Direct Alternating Current Discharge Plasma at Atmospheric Pressure. - Watanabe, Yoshimi; Mitsuishi, Naho; Yamada, Motoko; Sato, Hisashi; Takashima, Seigo; Miura-Fujiwara, Eri (Metals (2075-4701), 2024)