Effect of swift heavy silicon ion irradiation on TiO2 thin film prepared by micro arc oxidized technique. (2022)

• Record Type: Journal Article
• Authors: Kolanthai, Elayaraja; Ahymah Joshy, M.I.; Thanigai Arul, K.; Manojkumar, P.; Rameshbabu, N.; Ashok, M.; Sivakumar, G.R.; Asokan, K.; Narayana Kalkura, S.
• Is Part Of: Materials today. Volume 58:Part 3(2022)
• Page Start: 932
• Page End: 941
• Publication Date: 2022
• Subjects: Titanium dioxide -- Irradiation -- Photoluminescence -- Wettability -- Bioactivity; Materials science -- Congresses -- Periodicals; 620.1
• DOI: 10.1016/j.matpr.2021.12.312
• Languages: English
• ISSNs: 2214-7853

Abstract

Abstract: Titanium dioxide (TiO2 ) thin films were fabricated via a micro arc oxidized process and its surface was modified using 100 MeV Swift Heavy Si 7+ ion (SHI) irradiation. GIXRD analysis confirmed both the phases of rutile and anatase. Additionally, the analysis showed a gradual decrease in intensity which coincided with a rise in ion fluence at up to 5 × 10 12 ions/cm 2, whereas; at higher fluence (1 × 10 13 ions/cm 2 ), the intensity was enhanced. SEM images showed agglomerated particles in the range 0.1–9 µm for pristine whereas; at higher fluences (1 × 10 12 and 1 × 10 13 ions/cm 2 ) the particle dimensions reduced to a range within 0.1–3 µm. AFM exhibited uniform agglomerates with reduced particle size in the range 0.1–0.5 µm for fluences>1 × 10 12 ions/cm 2 . Enhancement in reflectance was observed for irradiated samples than what was seen in pristine. Irradiation led to a decrease in band gap to 1.4 eV (1 × 10 13 ions/cm 2 ) from 1.8 eV (pristine) due to an increase in the defects' energy level. Surface wettability, roughness, in vitro bioactivity, and irradiated film attachment to the cells are enhanced. Hence, these analytical results demonstrate that the irradiated film is an excellent implant and would be useful in orthopedic applications.