Phosphate bioglass thin-films: Cross-area uniformity, structure and biological performance tailored by the simple modification of magnetron sputtering gas pressure

Tite, Teddy; Popa, Ana Maria; Chirica, Iuliana M.; Stuart, Bryan W.; Gâlcă, A.C.; Balescu, Liliana Marinela; Popescu-Pelin, Gianina; Grant, David M.; Ferreira, José Maria F.; Stan, George E.

doi:10.1016/j.apsusc.2020.148640

Cited by 10 publications

(6 citation statements)

References 107 publications

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“…To obtain bioactive glass of any composition, two techniques are mainly used: The melting process of the components and the sol-gel technique. The first method is an older process of obtaining glass of any composition, which consists of mixing the precursors and melting them at high temperatures, followed by cooling and grinding the obtained glass [42,[44][45][46][47]. This method is still applied today to obtain bioactive glass or other types of glass [39,40,[48][49][50][51][52][53].…”

Section: Methods For Obtaining Bioactive Glassmentioning

confidence: 99%

“…The distance between the target and the substrate can be adjusted and this is an important parameter that influences the coating characteristics. In the literature, several bioactive glass coatings with 45S5 [151], 58S [150], bioactive glass with low content of silicon [152,153] or sodium [154,155] performed on Ti [152,153,[155][156][157][158], Ti-6Al-4V [44,150,151,154,[159][160][161], and silicon [44] were reported. These coatings were used in order to increase the bioavailability of dental implants [154] and bioactive scaffolds [150].…”

Section: Radio Frequency Magnetron Sputteringmentioning

confidence: 99%

“…The surface composition is analyzed by X-ray energy dispersion spectroscopy. Spectroscopic ellipsometry (SE) is used to determine the thickness and refractive index, and X-ray diffraction is used to evaluate the degree of crystallinity [44].…”

Section: Radio Frequency Magnetron Sputteringmentioning

confidence: 99%

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Bioactive Glass—An Extensive Study of the Preparation and Coating Methods

Maximov

Crăciun

et al. 2021

Coatings

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Diseases or complications that are caused by bone tissue damage affect millions of patients every year. Orthopedic and dental implants have become important treatment options for replacing and repairing missing or damaged parts of bones and teeth. In order to use a material in the manufacture of implants, the material must meet several requirements, such as mechanical stability, elasticity, biocompatibility, hydrophilicity, corrosion resistance, and non-toxicity. In the 1970s, a biocompatible glassy material called bioactive glass was discovered. At a later time, several glass materials with similar properties were developed. This material has a big potential to be used in formulating medical devices, but its fragility is an important disadvantage. The use of bioactive glasses in the form of coatings on metal substrates allows the combination of the mechanical hardness of the metal and the biocompatibility of the bioactive glass. In this review, an extensive study of the literature was conducted regarding the preparation methods of bioactive glass and the different techniques of coating on various substrates, such as stainless steel, titanium, and their alloys. Furthermore, the main doping agents that can be used to impart special properties to the bioactive glass coatings are described.

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Section: Methods For Obtaining Bioactive Glassmentioning

confidence: 99%

Section: Radio Frequency Magnetron Sputteringmentioning

confidence: 99%

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Bioactive Glass—An Extensive Study of the Preparation and Coating Methods

Maximov

Crăciun

et al. 2021

Coatings

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“…Phosphate bio-glasses (PBGs) have demonstrated an ability to stimulate specific biological responses from tissue to molecular level via coupling bioactive and resorbable material properties. Tite et al explored the radio-frequency magnetron-sputtered PBGs as sacrificial resorbable layers for prospective biomedical implant design [125].…”

Section: Magnetron Sputteringmentioning

confidence: 99%

Coatings Functionalization via Laser versus Other Deposition Techniques for Medical Applications: A Comparative Review

et al. 2022

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The development of new biological devices in response to market demands requires continuous efforts for the improvement of products’ functionalization based upon expansion of the materials used and their fabrication techniques. One viable solution consists of a functionalization substrate covered by layers via an appropriate deposition technique. Laser techniques ensure an enhanced coating’s adherence to the substrate and improved biological characteristics, not compromising the mechanical properties of the functionalized medical device. This is a review of the main laser techniques involved. We mainly refer to pulse laser deposition, matrix-assisted, and laser simple and double writing versus some other well-known deposition methods as magnetron sputtering, 3D bioprinting, inkjet printing, extrusion, solenoid, fuse-deposition modeling, plasma spray (PS), and dip coating. All these techniques can be extended to functionalize surface fabrication to change local morphology, chemistry, and crystal structure, which affect the biomaterial behavior following the chosen application. Surface functionalization laser techniques are strictly controlled within a confined area to deliver a large amount of energy concisely. The laser deposit performances are presented compared to reported data obtained by other techniques.

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“…The highest value of the average mass density (ρ m~2 θ TR , which allows us to determine the relative variation of mass density without knowing its absolute value) is obtained for the MSPLD thin films, both in the as-deposited state and after annealing. Considering that PLD is a punctual technique and the lateral thickness profiles are sharply falling [45,46] compared with the thickness variations of MS [47], the thickness difference can be explained this way. The highest value of the average mass density (ρ m~2 θ TR , which allows us to determine the relative variation of mass density without knowing its absolute value) is obtained for the MSPLD thin films, both in the as-deposited state and after annealing.…”

Section: Xrd Analysismentioning

confidence: 99%

The Effect of the Deposition Method on the Structural and Optical Properties of ZnS Thin Films

et al. 2021

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ZnS is a wide band gap material which was proposed as a possible candidate to replace CdS as a buffer layer in solar cells. However, the structural and optical properties are influenced by the deposition method. ZnS thin films were prepared using magnetron sputtering (MS), pulsed laser deposition (PLD), and a combined deposition technique that uses the same bulk target for sputtering and PLD at the same time, named MSPLD. The compositional, structural, and optical properties of the as-deposited and annealed films were inferred from Rutherford backscattering spectrometry, X-ray diffraction, X-ray reflectometry, Raman spectroscopy, and spectroscopic ellipsometry. PLD leads to the best stoichiometric transfer from target to substrate, MS makes fully amorphous films, whereas MSPLD facilitates obtaining the densest films. The study reveals that the band gap is only slightly influenced by the deposition method, or by annealing, which is encouraging for photovoltaic applications. However, sulphur vacancies contribute to lowering the bandgap and therefore should be controlled. Moreover, the results add valuable information towards the understanding of ZnS polymorphism. The combined MSPLD method offers several advantages such as an increased deposition rate and the possibility to tune the optical properties of the obtained thin films.

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Phosphate bioglass thin-films: Cross-area uniformity, structure and biological performance tailored by the simple modification of magnetron sputtering gas pressure

Cited by 10 publications

References 107 publications

Bioactive Glass—An Extensive Study of the Preparation and Coating Methods

Bioactive Glass—An Extensive Study of the Preparation and Coating Methods

Coatings Functionalization via Laser versus Other Deposition Techniques for Medical Applications: A Comparative Review

The Effect of the Deposition Method on the Structural and Optical Properties of ZnS Thin Films

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