The comparative studies of HF CVD diamond films by Raman and XPS spectroscopies

Paprocki, K.; Dittmar-Wituski, Adam; Trzciński, Marek; Szybowicz, Mirosław; Fabisiak, K.; Dychalska, Anna

doi:10.1016/j.optmat.2019.109251

Cited by 33 publications

(17 citation statements)

References 17 publications

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“…Hydrogen is believed to saturate non-radiative recombination sites like dangling bonds and, as a result, form centres of radiative recombination. Therefore, m/I G parameter may indicate the concentration of hydrogen in diamond layer [ 29 , 30 , 31 ].…”

Section: Resultsmentioning

confidence: 99%

“…Additional information can be also extracted from the photoluminescence PL background of the Raman spectrum, as it has been shown that the slope m of the linearly subtracted PL background normalized to the intensity of G band— m/I G is proportional to the hydrogen concentration in hydrogenated amorphous carbon [ 29 ]. It has also been shown that the PL background of Raman spectra of diamond layers depends on the hydrogen concentration at grain boundaries and on the surface [ 30 , 31 ]. However, density of defects in the diamond layer also influences the PL background behaviour and possible changes in m/I G parameter might be very small; therefore, data interpretation must be performed with caution.…”

Section: Introductionmentioning

confidence: 99%

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The Effect of Surface Treatment on Structural Properties of CVD Diamond Layers with Different Grain Sizes Studied by Raman Spectroscopy

et al. 2021

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Extensive Raman spectroscopy studies combined with scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS) measurements were performed to investigate structural and chemical changes in diamond layers deposited by chemical vapour deposition (CVD) upon post-growth treatment with hydrogen. The aim of this study is to characterize the changes in micro-structural properties of diamond layers with different grain sizes and different contents of sp2 carbon phase. Hydrogenation or oxidization of diamond layer surface is often performed to modify its properties; however, it can also strongly affect the surface structure. In this study, the impact of hydrogenation on the structure of diamond layer surface and its chemical composition is investigated. Owing to their polycrystalline nature, the structural properties of CVD diamond layers can strongly differ within the same layer. Therefore, in this project, in order to compare the results before and after hydrogen treatment, the diamond layers are subjected to Raman spectroscopy studies in the vicinity of a T-shape marker fabricated on the surface of each diamond layer studied.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The Effect of Surface Treatment on Structural Properties of CVD Diamond Layers with Different Grain Sizes Studied by Raman Spectroscopy

et al. 2021

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“…To ascertain the surface structure, the ratio of sp 2 to sp 3 intensities were calculated. sp 2 :sp 3 ratio for 30/70 and 50/50 samples were 1.32 and 2.15, respectively, as determined using the method outlined by Paprocki et al [i.e., sp 2 /sp 3 = A sp 2 /A sp 3 ]. This showed that the both composite samples (30/70 and 50/50) contain a high sp 2 component, which increases with increased diamond powder.…”

Section: Resultsmentioning

confidence: 99%

3D-Printed Diamond–Titanium Composite: A Hybrid Material for Implant Engineering

Fox

Mani

Rifai

et al. 2019

ACS Appl. Bio Mater.

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Diamond-based implant materials make up an emerging research area where the materials could be prepared to promote cellular functions, decrease bacteria attachment, and be suitable for potential in situ imaging. Up until now, diamond implants have been fabricated using coating technologies or embedding diamond nanoparticles in polymer matrices. Here we demonstrated a method of manufacturing diamond implants using laser cladding technology to 3D print a composite of diamond and fused titanium material. Using this method, we could prepare composite scaffolds of up to 50% diamond, which has never been achieved before. We next investigated the interfacial properties of these scaffolds for potential applications in implants. The addition of diamond to the biomaterial results in a 30% decrease in the water contact angle, making the scaffolds more hydrophilic and improving cellular adhesion and proliferation.

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“…XPS, as an effective technique, is applied to analyze the surface elements and functional groups [ 36 ]. Figure 2 b shows the wide-scan survey XPS spectra of CF, CF-KH550 and CF-SiO 2 –2.…”

Section: Resultsmentioning

confidence: 99%

Transcrystalline growth of PLLA on carbon fiber grafted with nano-SiO ₂ towards boosting interfacial bonding in bone scaffold

et al. 2022

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Background The reinforcement effect of fiber-reinforced polymer composites is usually limited because of the poor interfacial interaction between fiber and polymer, though fiber reinforcement is regarded as an effective method to enhance the mechanical properties of polymer. Methods In this study, nano-SiO2 particles grafted by 3-Glycidoxypropyltrimethoxysilane (KH560) were introduced onto the surface of 3-Aminopropyltriethoxysilane (KH550) modified carbon fiber (CF) by a self-assembly strategy to improve the interfacial bonding between CF and biopolymer poly (lactic acid) (PLLA). Results The results indicated that PLLA chains preferred to anchor at the surface of nano-SiO2 particles and then formed high order crystalline structures. Subsequently, PLLA spherulites could epitaxially grow on the surface of functionalized CF, forming a transcrystalline structure at the CF/PLLA interface. Meanwhile, the nano-SiO2 particles were fixed in the transcrystalline structure, which induced a stronger mechanical locking effect between CF and PLLA matrix. The results of tensile experiments indicated that the PLLA/CF-SiO2 scaffold with a ratio of CF to SiO2 of 9:3 possessed the optimal strength and modulus of 10.11 MPa and 1.18 GPa, respectively. In addition, in vitro tests including cell adhesion and fluorescence indicated that the scaffold had no toxicity and could provide a suitable microenvironment for the growth and proliferation of cell. Conclusion In short, the PLLA/CF-SiO2 scaffold with good mechanical properties and cytocompatibility had great potential in the application of bone tissue engineering.

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The comparative studies of HF CVD diamond films by Raman and XPS spectroscopies

Cited by 33 publications

References 17 publications

The Effect of Surface Treatment on Structural Properties of CVD Diamond Layers with Different Grain Sizes Studied by Raman Spectroscopy

The Effect of Surface Treatment on Structural Properties of CVD Diamond Layers with Different Grain Sizes Studied by Raman Spectroscopy

3D-Printed Diamond–Titanium Composite: A Hybrid Material for Implant Engineering

Transcrystalline growth of PLLA on carbon fiber grafted with nano-SiO ₂ towards boosting interfacial bonding in bone scaffold

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The comparative studies of HF CVD diamond films by Raman and XPS spectroscopies

Cited by 33 publications

References 17 publications

The Effect of Surface Treatment on Structural Properties of CVD Diamond Layers with Different Grain Sizes Studied by Raman Spectroscopy

The Effect of Surface Treatment on Structural Properties of CVD Diamond Layers with Different Grain Sizes Studied by Raman Spectroscopy

3D-Printed Diamond–Titanium Composite: A Hybrid Material for Implant Engineering

Transcrystalline growth of PLLA on carbon fiber grafted with nano-SiO 2 towards boosting interfacial bonding in bone scaffold

Contact Info

Product

Resources

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Transcrystalline growth of PLLA on carbon fiber grafted with nano-SiO ₂ towards boosting interfacial bonding in bone scaffold