Deposition of Ag nanostructures on TiO2 thin films by RF magnetron sputtering

Zuo, Juan

doi:10.1016/j.apsusc.2010.05.034

Cited by 39 publications

(24 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Shah et al [ 40 ] used the radiofrequency magnetron sputtering to apply photocatalytic TiO 2 to stainless steel orthodontic brackets in order to evaluate the antibacterial and antiadherent properties of these compounds against Lactobacillus acidophilus . The main advantage of this method is the ability to apply a thin, inorganic, nanoparticle coating with an adjustable shape and size by tuning preparation parameters [ 41 ].…”

Section: Introductionmentioning

confidence: 99%

Functional Coatings for Orthodontic Archwires—A Review

et al. 2020

View full text Add to dashboard Cite

In this literature review, the current state-of-art of coatings for orthodontic archwires’ increasing antimicrobial and relevant mechanical properties, such as surface topography, friction or corrosion resistance, has been presented. There is a growing request for orthodontic appliances, therefore, most researchers focus on innovative functional coatings to cover orthodontic archwires and brackets. Orthodontic appliances are exposed to the unfavorable oral cavity environment, consisting of saliva flow, food, temperature and appliance force. As a consequence, friction or biocorrosion processes may occur. This can affect the functionality of the orthodontic elements, causing changes in their microstructure, surface topography and mechanical properties. Furthermore, the material which the orthodontic archwire is made from is of particular importance in terms of the possible corrosion resistance. This is especially important for patients who are hypersensitive to metals, for example, nickel, which causes allergic reactions. In the literature, there are some studies, carried out in vitro and in vivo, mostly examining the antibacterial, antiadherent, mechanical and roughness properties of functional coatings. They are clinically acceptable but still some properties have to be studied and be developed for better results. In this paper the influence of additives such as nanoparticles of silver and nitrogen-doped TiO2 applied on orthodontic brackets by different methods on the antimicrobial properties was analyzed. Future improvement of coating techniques as well as modification of the archwire composition can reduce the release of nickel ions and eliminate friction and bacterial adhesion problems, thus accelerating treatment time.

show abstract

Section: Introductionmentioning

confidence: 99%

Functional Coatings for Orthodontic Archwires—A Review

et al. 2020

View full text Add to dashboard Cite

show abstract

“…5,[8][9][10][11][12][13] This process allows the nanocomposite thin-films to be produced at high speed using established technologies, while offering control of the nanoparticle size and spatial distribution within the matrix of the wide-gap material. Such control is important for the potential of CdTe-ZnO nanocomposites to enhance the performance of photovoltaic devices by allowing for a variation of the absorption onset 8,9 and an increased photoresponse from the nanocomposite films.…”

Section: Introductionmentioning

confidence: 99%

Impact of annealing on the chemical structure and morphology of the thin-film CdTe/ZnO interface

Horsley

Beal

Wilks

et al. 2014

Journal of Applied Physics

View full text Add to dashboard Cite

To enable an understanding and optimization of the optoelectronic behavior of CdTe-ZnO nanocomposites, the morphological and chemical properties of annealed CdTe/ZnO interface structures were studied. For that purpose, CdTe layers of varying thickness (4–24 nm) were sputter-deposited on 100 nm-thick ZnO films on surface-oxidized Si(100) substrates. The morphological and chemical effects of annealing at 525 °C were investigated using X-ray Photoelectron Spectroscopy (XPS), X-ray-excited Auger electron spectroscopy, energy dispersive X-ray spectroscopy, scanning electron microscopy, and atomic force microscopy. We find a decrease of the Cd and Te surface concentration after annealing, parallel to an increase in Zn and O signals. While the as-deposited film surfaces show small grains (100 nm diameter) of CdTe on the ZnO surface, annealing induces a significant growth of these grains and separation into islands (with diameters as large as 1 μm). The compositional change at the surface is more pronounced for Cd than for Te, as evidenced using component peak fitting of the Cd and Te 3d XPS peaks. The modified Auger parameters of Cd and Te are also calculated to further elucidate the local chemical environment before and after annealing. Together, these results suggest the formation of tellurium and cadmium oxide species at the CdTe/ZnO interface upon annealing, which can create a barrier for charge carrier transport, and might allow for a deliberate modification of interface properties with suitably chosen thermal treatment parameters.

show abstract

“…22,23 The main advantage of magnetron sputtering is able to deposit inorganic nanoparticle thin lms with controllable size and shape by tuning preparation parameters. 24 The newly developed CAWs with excellent mechanical properties have great potential for orthodontic applications, 25 but the corrosion resistance and antibacterial performance of CAW are still not satisfactory. In this study, in order to further improve the anticorrosion ability and antibacterial activity of CAWs, TiO 2 and N-doped TiO 2 nanocrystal thin lms are respectively deposited on the CAW surface.…”

Section: Introductionmentioning

confidence: 99%