Carbon Nanotube Coatings’ Role in Transparency, Mechanical Hardness, and Wetting Angle Increase

Каманина, Н. В.

doi:10.3390/coatings12091279

Cited by 2 publications

(2 citation statements)

References 42 publications

(57 reference statements)

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“…Carbon materials, including carbon nanotubes and graphene nanosheets, have been used as reinforcements in Mg-based composites due to their unique structure and very high Young's modulus [21,63,64]. Due to the small diameter and very high mechanical hardness of CNTs, if they are densely placed on the surface of the medical instrument, the obtained lotus effect can provide protection against corrosion as well as bacteria and viruses [65,66]. Abazari et al [27] showed that the continuous distribution of graphene oxide (GO) reinforcement has a positive effect on the microstructure, mechanical properties, and corrosion resistance of the Mg matrix, while the O-containing groups in GO also promote the deposition of the corrosion product layer [27].…”

Section: Mg/mgo Np Compositesmentioning

confidence: 99%

Recent Advances in Magnesium–Magnesium Oxide Nanoparticle Composites for Biomedical Applications

Saberi,

Baltatu,

Vizureanu

2024

Bioengineering

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Magnesium (Mg) is considered an attractive option for orthopedic applications due to its density and elastic modulus close to the natural bone of the body, as well as biodegradability and good tensile strength. However, it faces serious challenges, including a high degradation rate and, as a result, a loss of mechanical properties during long periods of exposure to the biological environment. Also, among its other weaknesses, it can be mentioned that it does not deal with bacterial biofilms. It has been found that making composites by synergizing its various components can be an efficient way to improve its properties. Among metal oxide nanoparticles, magnesium oxide nanoparticles (MgO NPs) have distinct physicochemical and biological properties, including biocompatibility, biodegradability, high bioactivity, significant antibacterial properties, and good mechanical properties, which make it a good choice as a reinforcement in composites. However, the lack of comprehensive understanding of the effectiveness of Mg NPs as Mg matrix reinforcements in mechanical, corrosion, and biological fields is considered a challenge in their application. While introducing the role of MgO NPs in medical fields, this article summarizes the most important results of recent research on the mechanical, corrosion, and biological performance of Mg/MgO composites.

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Section: Mg/mgo Np Compositesmentioning

confidence: 99%

Recent Advances in Magnesium–Magnesium Oxide Nanoparticle Composites for Biomedical Applications

Saberi,

Baltatu,

Vizureanu

2024

Bioengineering

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“…The principal difference separating the LOD technique from other methods is the ability to deposit CNTs on materials with various natural structures (metals [40], ceramics [41,42], and semiconductors [23]) via their implantation under the influence of an electrical field [43]. The feature of CNT implantation controlled under an external electric field allows for finding the optimal deposition regime with a significant improvement of the mechanical and optical properties [23,[40][41][42][43][44]. It should be mentioned that for the system "ITO-CNTs", a dramatic change in wettability is observed.…”

Section: Introductionmentioning

confidence: 99%

Perspective Coatings Based on Structured Conducting ITO Thin Films for General Optoelectronic Applications

Toikka,

Ilin,

Kamanina

2024

Coatings

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In many electro-optical devices, the conductive layer is an important key functional element. Among others, unique indium tin oxide (ITO) contacts take priority. ITO structure is widely used as the optical transparent and electrically conductive material in general optoelectronics, biosensors and electrochemistry. ITO is one of the key elements in the liquid crystal (LC) displays, spatial light modulators (SLMs) and LC convertors. It should be mentioned that not only the morphology of this layer structure but also the surface features play an important role in the study of the physical parameters of the ITO. In order to switch the surface properties (roughness, average tilt angle and surface free energy) of the ITO via the laser-oriented deposition (LOD) method, carbon nanotubes (CNTs) were implanted. In the LOD technique, the CO2 laser (λ = 10.6 μm, P = 30 W) with the control electric grid was used. The switching of the deposition conditions was provided via the varying electrical strength of the control grid in the range of 100–600 V/cm. The diagnostics of the surfaces were performed using AFM analysis and wetting angle measurements. The components of the surface free energy (SFE) were calculated using the OWRK method. The main experimental results are as follows: the roughness increases with a rise in the electric field strength during the deposition of the CNTs; the carbon nanotubes provide a higher level of the dispersive component of SFE (25.0–31.4 mJ/m2 against 22.2 mJ/m2 in the case of pure ITO); the CNTs allow an increase in the wetting angle of the 5CB liquid crystal drops from 38.35° to 58.95°. Due to the possibility of the switching properties of the ITO/CNT surfaces, these modifications have potential interest in microfluidics applications and are useful for the liquid crystal’s electro-optics.

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Carbon Nanotube Coatings’ Role in Transparency, Mechanical Hardness, and Wetting Angle Increase

Cited by 2 publications

References 42 publications

Recent Advances in Magnesium–Magnesium Oxide Nanoparticle Composites for Biomedical Applications

Recent Advances in Magnesium–Magnesium Oxide Nanoparticle Composites for Biomedical Applications

Perspective Coatings Based on Structured Conducting ITO Thin Films for General Optoelectronic Applications

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