Influence of the Silver Content on Mechanical Properties of Ti-Cu-Ag Thin Films

Rashid, Saqib; Sebastiani, Marco; Mughal, Muhammad Zeeshan; Daniel, Rostislav; Bemporad, Edoardo

doi:10.20944/preprints202101.0256.v1

Cited by 4 publications

(1 citation statement)

References 58 publications

(66 reference statements)

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“…After the flame sterilization test, no change was observed in the mechanical properties of thin film, consistent with a previous report [33]. All the samples were analyzed by XPS spectroscopy before and after flaming with alcohol (flamed samples will be labelled (F) in the following text).…”

Section: Structural Morphological Chemical and Mechanical Characterization Of Substratessupporting

confidence: 86%

Biocompatibility and Antibacterial Properties of TiCu(Ag) Thin Films Produced by Physical Vapor Deposition Magnetron Sputtering

Rashid¹,

Vita²,

Persichetti³

et al. 2021

Preprint

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Mechanical robustness, biocompatibility, and antibacterial performances are key features for materials suitable to be used in tissue engineering applications. In this work, we investigated the link existing between structural and functional properties of TiCu(Ag) thin films deposited by physical vapor deposition magnetron sputtering on Si substrates. The thin films were characterized by X-ray diffraction (XRD), nanoindentation, atomic force microscopy (AFM), and X-ray photoelectron spectroscopy (XPS). The TiCu(Ag) thin films showed complete amorphous structure and improved mechanical properties in comparison with pure Ti films. However, for contents in excess of 20% Ag, we observed the appearance of nanometric Ag crystallite. The TiCu(Ag) thin films displayed excellent biocompatibility properties, allowing adhesion and proliferation of the human fibroblasts MRC-5 cell line. Moreover, all the investigated TiCu(Ag) alloy display bactericidal properties, preventing the growth of both Pseudomonas aeruginosa and Staphylococcus aureus. Results obtained from biological tests have been correlated to the surface structure and microstructure of films. The excellent biocompatibility and bactericidal properties of these multifunctional thin films opens to their use in tissue engineering applications.

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Section: Structural Morphological Chemical and Mechanical Characterization Of Substratessupporting

confidence: 86%

Biocompatibility and Antibacterial Properties of TiCu(Ag) Thin Films Produced by Physical Vapor Deposition Magnetron Sputtering

Rashid¹,

Vita²,

Persichetti³

et al. 2021

Preprint

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Sputter-Deposited Cr–Ag Films for Environmental Antimicrobial Applications

Wang

Shum³

et al. 2021

Coatings

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Chromium–silver films with ≤ 39.2 at.% Ag were deposited by magnetron sputtering for antibacterial applications. X-ray diffraction and scanning electron microscopy analyses indicate that the films consist of Cr and Ag, and silver segregation is not obvious at the surface. The films are hard (628–968 HV0.001) and hydrophobic with low surface energy (12.8–26.8 mJ/m2). The drying time of water droplets is dependent on ambient conditions, material wettability and droplet size. The test against Escherichia coli indicates antibacterial ratios of 100% for the Cr–Ag films (action time 3 h). However, bacteria died within 15 min due to quick drying of the bacterial suspension in open ambient conditions. The Cr–Ag films would have potential antimicrobial applications in public environmental facilities.

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Synthesis, Characterisation and Antibacterial Properties of Silicone–Silver Thin Film for the Potential of Medical Device Applications

et al. 2021

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Silver (Ag) particles have sparked considerable interest in industry and academia, particularly for health and medical applications. Here, we present the “green” and simple synthesis of an Ag particle-based silicone (Si) thin film for medical device applications. Drop-casting and peel-off techniques were used to create an Si thin film containing 10–50% (v/v) of Ag particles. Electro impedance spectroscopy (EIS), X-ray diffraction analysis (XRD), scanning electron microscopy (SEM), energy dispersive X-ray (EDX), and tensile tests were used to demonstrate the electrical conductivity, crystallinity, morphology-elemental, and mechanical properties, respectively. The oriented crystalline structure and excellent electronic migration explained the highest conductivity value (1.40 × 10−5 S cm−1) of the 50% Ag–Si thin film. The findings regarding the evolution of the conductive network were supported by the diameter and distribution of Ag particles in the Si film. However, the larger size of the Ag particles in the Si film resulted in a lower tensile stress of 68.23% and an elongation rate of 68.25% compared to the pristine Si film. The antibacterial activity of the Ag–Si film against methicillin-resistant Staphylococcus aureus (MRSA), Bacillus cereus (B. cereus), Klebsiella pneumoniae (K. pneumoniae), and Pseudomonas aeruginosa (P. aeruginosa) was investigated. These findings support Si–Ag thin films’ ability to avoid infection in any medical device application.

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Influence of the Silver Content on Mechanical Properties of Ti-Cu-Ag Thin Films

Cited by 4 publications

References 58 publications

Biocompatibility and Antibacterial Properties of TiCu(Ag) Thin Films Produced by Physical Vapor Deposition Magnetron Sputtering

Biocompatibility and Antibacterial Properties of TiCu(Ag) Thin Films Produced by Physical Vapor Deposition Magnetron Sputtering

Sputter-Deposited Cr–Ag Films for Environmental Antimicrobial Applications

Synthesis, Characterisation and Antibacterial Properties of Silicone–Silver Thin Film for the Potential of Medical Device Applications

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