Influence of physical plasma etching treatment on optical and hydrophilic MgF2 thin film

Eshaghi, Akbar; Mesbahi, Morteza; Aghaei, Abbas Ali

doi:10.1016/j.ijleo.2018.02.029

Cited by 8 publications

(4 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…After MgPIII, Ta/TaN is more hydrophilic showing contact angles of 41.6 ± 1.0 • and 31.5 ± 1.1 • . The wettability is related to both the surface topography and surface chemistry, and a rougher surface shows a smaller water contact angle [68][69][70]. Plasma etching can enhance the hydrophilicity due to addition of oxygenated functional groups to the surface [69].…”

Section: Resultsmentioning

confidence: 99%

“…The wettability is related to both the surface topography and surface chemistry, and a rougher surface shows a smaller water contact angle [68][69][70]. Plasma etching can enhance the hydrophilicity due to addition of oxygenated functional groups to the surface [69]. It also increases the surface roughness and surface energy and creates a hydrophilic surface compared to the Ta/TaN specimen.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Corrosion resistance, nano-mechanical properties, and biocompatibility of Mg-plasma-implanted and plasma-etched Ta/TaN hierarchical multilayered coatings on the nitrided AZ91 Mg alloy

Shanaghi¹,

Souri

Mehrjou

et al. 2021

Biomed. Mater.

View full text Add to dashboard Cite

A tantalum/tantalum nitride (Ta/TaN) multilayered coating is deposited on plasma-nitridedAZ91 Mg alloy. The top TaN layer undergoes O2 + Ar plasma etching to improve the antibacterial properties and Mg plasma immersion ion implantation (MgPIII) is performed to enhance the biocompatibility and wound healing capability. A uniform, compact, homogeneous, and columnar nanostructured MgPIII and plasma-etched TaN layer with a cluster size of about 17 nm, surface roughness of 0.28 nm, and needle morphology is observed. Although, plasma etching increases the corrosion current density (i corr) from 0.02 to 0.19 µA cm−2 due to larger surface roughness and different potentials between sharp points and smooth points, MgPIII decreases i corr from 0.19 to 0.02 µA cm−2 besides a more positive corrosion potential. The amounts of Mg+2 released to the simulated body fluid (SBF) diminishes from 89.63 ± 0.54 to 60.30 ± 0.47 mg l−1 cm−2 indicating improved corrosion resistance. Under fever conditions (40 °C), i corr decreases by 63%, but the open circuit potential does not change due to the constant chemical composition of the surface as well as thicker double layer and less defects, as confirmed by the larger amount of Mg+2 of 71.49 ± 0.22 mg l−1 cm−2 leached to the SBF. In the self-healing process which occurs via the reactions between the tantalum intermediate layer and electrolytes and penetrating ions through the defects as well as formation of oxide compounds, creation and propagation of defects are deterred as shown the 24 h destructive polarization test in SBF. The combination of plasma etching and MgPIII enhance not only the bacterial resistance and biocompatibility of the super-hard TaN layer by providing the rougher surface on TaN–P–Mg, but also the nano-mechanical properties and anticorrosion properties. As a result, the hardness increases by 7%, elastic modulus decreases by 19%, and the stiffness increases by 21%.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Corrosion resistance, nano-mechanical properties, and biocompatibility of Mg-plasma-implanted and plasma-etched Ta/TaN hierarchical multilayered coatings on the nitrided AZ91 Mg alloy

Shanaghi¹,

Souri

Mehrjou

et al. 2021

Biomed. Mater.

View full text Add to dashboard Cite

show abstract

“…However, their mechanical properties may limit their use as hard coatings. MgF 2 [ 135 ] and CaF 2 [ 114,115 ] may still find application for protecting optical surfaces, but their hardness is dependent on the deposition technique.…”

Section: Methodsmentioning

confidence: 99%

“…However, their mechanical properties may limit Boron nitride [ 99,112,113] Calcium fluoride [ 114,115] Gallium oxide [122][123][124][125][126][127] Potassium bromide [ 139] Polydimethyl siloxane [ 141] PDMS 1.42 at 700 nm 0.39-0.78 Soft -0.002 Hydrophobic Silicon [ 128] Silicon carbide [ 142,143] Yttrium oxide [ 147,148] Zinc selenide [ 128,150] Zinc sulfide [ 151,152] their use as hard coatings. MgF 2 [135] and CaF 2 [114,115] may still find application for protecting optical surfaces, but their hardness is dependent on the deposition technique.…”

Section: Fluoridesmentioning

confidence: 99%

A Review on Potential Mechanically Resistant Materials for Optical Multifunctional Surfaces: Bioinspired Surfaces with Advanced Properties

Sarieddine,

Kadiri,

Guelorget

et al. 2023

Adv Materials Inter

View full text Add to dashboard Cite

Mimicking naturethrough nanostructuring allows the creation of multifunctional surfaces withremarkable properties, such as anti‐reflectivity, high optical transmittanceand controlled wettability, enabling anti‐icing or anti‐fogging behaviors. These multifunctionalsurfaces have gained significant interest in civil and military domains. However,integrating them into real‐life applications faces challenges related tocost, high‐throughput large‐scale compatible nanofabrication techniques, andtheir mechanical resistance. While sub‐wavelength patterning improves the optical performance,it often comes at the cost of compromising the mechanical resistance. As opticalperformance improves, mechanical resistance tends to deteriorate, and viceversa. To address this challenge, taking inspiration from the lotus leafstructure, where patterns are covered by a thin 2D wax film, covering thepatterns of structured surfaces with a protective layer can be a viablesolution. This protective layer should enhance the mechanical resistance of thesurface without compromising its multifunctional capabilities. This reviewhighlights the most suitable materials that can be employed as protectivecoatings and their potential to enhance the resistance of structured surfaces.The fundamental concept behind the creation of multifunctional optical surfacesis discussed, followed by a comprehensive examination of mechanical tests thatcan be utilized to characterize their mechanical behavior. This review aims topave the way for the development of durable multifunctional optical surfaces,making them more amenable to industrial applications.

show abstract

Growth and characterization of hydrophobic anti-reflection CaF2 films

Jain

Kaur

Khanna

et al. 2020

J Mater Sci: Mater Electron

View full text Add to dashboard Cite

Influence of physical plasma etching treatment on optical and hydrophilic MgF2 thin film

Cited by 8 publications

References 21 publications

Corrosion resistance, nano-mechanical properties, and biocompatibility of Mg-plasma-implanted and plasma-etched Ta/TaN hierarchical multilayered coatings on the nitrided AZ91 Mg alloy

Corrosion resistance, nano-mechanical properties, and biocompatibility of Mg-plasma-implanted and plasma-etched Ta/TaN hierarchical multilayered coatings on the nitrided AZ91 Mg alloy

A Review on Potential Mechanically Resistant Materials for Optical Multifunctional Surfaces: Bioinspired Surfaces with Advanced Properties

Growth and characterization of hydrophobic anti-reflection CaF2 films

Contact Info

Product

Resources

About