Synthesis of Cubic Nanocrystalline Silicon Carbide (3C-SiC) Films by HW-CVD Method

Kamble, Mahesh M.; Waman, Vaishali P.; Mayabadi, Azam; Funde, Adinath M.; Sathe, Vasant; Shripathi, T.; Pathan, Habib M.; Jadkar, Sandesh

doi:10.1007/s12633-015-9358-8

Cited by 14 publications

(5 citation statements)

References 43 publications

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“…It is both extremely stable and inertness, and it is able to work at high frequency, high-temperature, and in harsh environments, with better performances than other silicon-based devices. It is a polymorphic material with more than 200 different known polytypes, among which the most used are the cubic 3C-SiC and the hexagonal 4H-SiC 12,13 . 4H-SiC is being used for high power electronic devices, while 3C-SiC has a surface with chemical-physical properties that makes it highly suitable for biotechnological applications.…”

Section: Introductionmentioning

confidence: 99%

Biocompatibility between Silicon or Silicon Carbide surface and Neural Stem Cells

Bonaventura

Iemmolo

Cognata

et al. 2019

Sci Rep

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Silicon has been widely used as a material for microelectronic for more than 60 years, attracting considerable scientific interest as a promising tool for the manufacture of implantable medical devices in the context of neurodegenerative diseases. However, the use of such material involves responsibilities due to its toxicity, and researchers are pushing towards the generation of new classes of composite semiconductors, including the Silicon Carbide (3C-SiC). In the present work, we tested the biocompatibility of Silicon and 3C-SiC using an in vitro model of human neuronal stem cells derived from dental pulp (DP-NSCs) and mouse Olfactory Ensheathing Cells (OECs), a particular glial cell type showing stem cell characteristics. Specifically, we investigated the effects of 3C-SiC on neural cell morphology, viability and mitochondrial membrane potential. Data showed that both DP-NSCs and OECs, cultured on 3C-SiC, did not undergo consistent oxidative stress events and did not exhibit morphological modifications or adverse reactions in mitochondrial membrane potential. Our findings highlight the possibility to use Neural Stem Cells plated on 3C-SiC substrate as clinical tool for lesioned neural areas, paving the way for future perspectives in novel cell therapies for neuro-degenerated patients.

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Section: Introductionmentioning

confidence: 99%

Biocompatibility between Silicon or Silicon Carbide surface and Neural Stem Cells

Bonaventura

Iemmolo

Cognata

et al. 2019

Sci Rep

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“…The γ-SiC NF possesses all real vibrational frequencies (VFs) (Figure ) suggesting its thermodynamic stability and feasibility of experimental synthesis. The Si–C sp stretching vibrations are observed between 1445–1526 cm –1 , whereas the sp 2 stretching of Si–C is located between 1000–1058 cm –1 , which is comparatively higher than that of cubic SiC nanocrystals and the SiC epitaxial layer …”

Section: Resultsmentioning

confidence: 89%

Ab Initio Study of the Graphyne-like γ-SiC Nanoflake for Toxic Gas-Sensing Applications

Ahmed,

Roy,

Roman

et al. 2024

Langmuir

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This study focuses on the geometrical, electronic, and optical properties of the γ-graphyne-like novel γ-SiC nanoflake of the γ-silicon carbide (SiC) monolayer using density functional theory calculations. γ-SiC was revealed to be a stable semiconducting nanoflake confirmed by a negative cohesive energy, real vibrational frequencies, and a 1.749 eV energy gap. The adsorption of COCl 2 , HCN, PH 3 , AsH 3 , CNCl, and C 2 N 2 toxic gases on the γ-SiC nanoflake is also studied, which revealed an attractive gas−nanoflake interaction with the adsorption energy ranging from −0.21 to −0.38 eV. The adsorption results in a significant charge transfer between gas−adsorbent complexes. A significant variation in the energy gap and electrical conductivity was observed due to gas adsorption. γ-SiC showed maximum sensitivity at room temperature for CNCl gas. The entire process of adsorption is exothermic and thermodynamically stable. γ-SiC showed a high absorption coefficient over 10 4 orders with a significant variation in the absorption peak intensity and blue peak shifting. According to the quantum theory and reduced density gradient analysis, all of the gases are physisorbed on the γ-SiC nanoflake due to van der Waals interactions. The obtained results signify the usability of γ-SiC as a potential toxic gas sensor.

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“…[49][50][51] The distinct twin peaks at 101.50 and 102.27 eV are attributed to C-Si-C covalent bonds at 150 s of sputtering, which are much stronger signals in the Si-co-HGCS than Si-LGCS and S-HGCS. In Raman spectra, the enhancement of the intensity of the Si-C peak at 956 cm −1 indicates an increase in the Si-C bond, [52] reflecting the strong covalent links between the Si and carbon layers. This is further confirmed by the stronger Si-C stretching vibration peak at ≈800 cm −1 in FTIR spectra (Figure 2c).…”

Section: Building Robust Covalent Coating Structure On Simpsmentioning

confidence: 99%

Covalent Coating of Micro‐Sized Silicon With Dynamically Bonded Graphene Layers Toward Stably Cycled Lithium Storage

Zhao

Pan

et al. 2023

Advanced Energy Materials

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State-of-the-art carbon coatings are sought to protect high-capacity silicon anodes, which suffer from low conductivity, large volume change and fast degradation. However, this approach falls short when handling physical-electrical disconnections between carbon shells and silicon microparticulate (SiMP) with drastic size variations. Here, a strategy of covalent coating is developed to establish a robust encapsulation structure. The obtained covalent Si-C bonds enable an effectively dynamic connection between the electrochemically deforming SiMP and the sliding graphene layers, preventing the evolution of gaps between SiMP and the carbon shell and maintaining persistent electrical connections as well as mechanical toughness. As a result of high structure reversibility, the cycling stability of thick SiMP anodes is greatly improved, up to a high areal capacity of 5.6 mAh cm −2 and volumetric capacity of 2564 mAh cm −3 . This interface bonding effect demonstrates the great potential for suppressing deformation involved degradation of high-capacity materials through coating strategies.

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Synthesis of Cubic Nanocrystalline Silicon Carbide (3C-SiC) Films by HW-CVD Method

Cited by 14 publications

References 43 publications

Biocompatibility between Silicon or Silicon Carbide surface and Neural Stem Cells

Biocompatibility between Silicon or Silicon Carbide surface and Neural Stem Cells

Ab Initio Study of the Graphyne-like γ-SiC Nanoflake for Toxic Gas-Sensing Applications

Covalent Coating of Micro‐Sized Silicon With Dynamically Bonded Graphene Layers Toward Stably Cycled Lithium Storage

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