Discrimination of different amorphous carbon by low fluence laser irradiation

Diaf, Hatem; Péreira, A.; Melinon, P.; Blanchard, N. P.; Bourquard, Florent; Garrelie, Florence; Donnet, Christophe

doi:10.1016/j.cartre.2022.100195

Cited by 3 publications

(2 citation statements)

References 37 publications

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“…8). The A band (or D 3 band) at approximately 1490 cm -1 was introduced to account for spectral contribution from amorphous carbon allotropes, as proposed by other works [53,57]. However, the molecular origin of the A band is controversial and is suspected to be correlated with surface modifications resulting from heteroatom binding and formation of functional groups on the graphite surface [53].…”

Section: Raman Spectroscopymentioning

confidence: 99%

Effect of electrophoretic deposition of micro-quartz on the microstructural and mechanical properties of carbon fibers and their bond performance toward cement

Liebscher

et al. 2022

J Mater Sci

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An electrophoretic deposition (EPD) process of micro-quartz (MQ) powder is applied to carbon fibers (CFs) with the aim to enhance their interfacial bond to cementitious matrices and to investigate its influence on the microstructural and mechanical properties of the CFs itself. The electrophoretic mobility of the MQ particles with negative charge in aqueous media was confirmed by potential sweep experiments and zeta-potential measurements. High amounts of MQ were successfully deposited onto the fiber surface, as proven by scanning electron microscopy. Single-fiber tension tests and thermogravimetric analysis showed that EPD treatment had little impact on the tensile properties and thermal stability of the modified fibers. However, storing the CFs in cement pore solution impaired temperature stability of untreated and modified fibers. X-ray diffraction and Raman spectroscopy reveal specific changes of CF's microstructure upon EPD treatment and immersion in pore solution. Single-fiber pullout tests showed that the pullout resistance of MQ-modified CFs was enhanced, relative to untreated CFs. This augmentation can be explained by an enhanced interlocking mechanisms between CF and matrix due to the deposited quartz particles on the CF surface.

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Section: Raman Spectroscopymentioning

confidence: 99%

Effect of electrophoretic deposition of micro-quartz on the microstructural and mechanical properties of carbon fibers and their bond performance toward cement

Liebscher

et al. 2022

J Mater Sci

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“…The Ag-BBE sample revealed characteristic bands that are located at 1330, 1445, 1565, 1677, 1795, and 1930 cm −1 . The 1330 cm −1 may be attributed to the D-band associated with disordered carbon [ 85 ] or shifted C=O [ 80 , 82 ], while the band located at 1445 cm −1 belongs to the CH 2 or CH 3 bending vibrations of the organic biomolecules of the used extract [ 86 ], BBE. Both the bands located at 1565 and 1795 cm −1 may be ascribed to the C=C stretching vibration, while the band at 1677 cm −1 is correlated to the C=O stretching vibration band [ 87 ].…”

Section: Resultsmentioning

confidence: 99%

Comparative Study of Callistemon citrinus (Bottlebrush) and Punica granatum (Pomegranate) Extracts for Sustainable Synthesis of Silver Nanoparticles and Their Oral Antimicrobial Efficacy

Ismail,

Mohamed,

Elzwawy

et al. 2024

Nanomaterials

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A comparative study was applied to investigate the potential of Callistemon citrinus (bottlebrush) flower extract (BBE) and Punica granatum (pomegranate) peel extracts (PPE) for the sustainable synthesis of the silver nanoparticles, Ag-BBE and Ag-PPE, respectively. The synthesis process of Ag NPs using the selected extracts was applied under optimized conditions. Hence, the effect of the selected plant’s type on the different characteristics of the synthesized green Ag NPs was investigated. The UV-Vis spectroscopy revealed the presence of the characteristic silver peaks at 419 and 433 nm of the Ag-BBE and Ag-PPE, respectively. The XRD spectra reported the fcc phase formation of Ag NPs. The TEM results highlighted the morphological features of the synthesized Ag NPs. with a size range of 20–70 nm, and with 10–30 nm for Ag-BBE and Ag-PPE, correspondingly. The Raman spectra revealed characteristic silver bands in the Ag-PPE and reflected some bands related to the natural extract in the Ag-BBE sample. The antimicrobial activity and statistical analysis investigation were conducted against four selected oral pathogens (Staphylococcus aureus (SA), Candida albicans (CA), Staphylococcus epidermidis (S. epi), and Enterococcus faecalis (EF)). Both tested extracts, BBE, and PPE, revealed potential effectivity as reducing and capping agents for Ag NP green synthesis. However, the synthesized NPs demonstrated different features, depending on the used extract, reflecting the influence of the plant’s biomolecules on the nanoparticles’ properties.

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Laser wobbling surface texturing of AISI 301LN steel for enhancement of the corrosion resistance at high temperature

Rezayat,

Morales,

Moradi

et al. 2024

Optics & Laser Technology

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Discrimination of different amorphous carbon by low fluence laser irradiation

Cited by 3 publications

References 37 publications

Effect of electrophoretic deposition of micro-quartz on the microstructural and mechanical properties of carbon fibers and their bond performance toward cement

Effect of electrophoretic deposition of micro-quartz on the microstructural and mechanical properties of carbon fibers and their bond performance toward cement

Comparative Study of Callistemon citrinus (Bottlebrush) and Punica granatum (Pomegranate) Extracts for Sustainable Synthesis of Silver Nanoparticles and Their Oral Antimicrobial Efficacy

Laser wobbling surface texturing of AISI 301LN steel for enhancement of the corrosion resistance at high temperature

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