Fabrication of 4H–SiC nanoparticles using femtosecond pulsed laser ablation in deionized water

Guo, Xiangjing; Song, Haiying; Li, Yachao; Wang, Peng; Liu, Shibing

doi:10.1016/j.optmat.2022.112817

Cited by 8 publications

(8 citation statements)

References 55 publications

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“…Using the spontaneous polarization values shown in Table 1 above, we calculate the electric potential produced in the vicinity of the quantum dots using (6). However, to choose between P(high) and P(low) from Table 1, one requires knowledge of the exact diameter of the quantum dot to within one monolayer.…”

Section: Resultsmentioning

confidence: 99%

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The Use of Semiconductor Quantum Dots with Large, Built-In Spontaneous Polarizations for the Electric Potential Stimulation of Biological Structures on the Nanoscale

Zia,

Stroscio,

Dutta

2023

Nanomaterials

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The feasibility of using quantum dots fabricated from materials with built-in spontaneous polarizations for the electric potential stimulation of biological structures in aqueous environments is evaluated by modeling the electric potential produced in the vicinity of such quantum dots. By modeling the external potential created by the spherical nanoscale region of a material with spontaneous polarization, and by considering Debye screening in the vicinity of the quantum dot, it is found that electric potential around these nanostructures is sufficient to cause physiological effects in selected biological systems. These findings suggest that quantum dots may be used in lieu of quantum dots with polarizations produced using an external laser to cause physiological effects. The elimination of the external laser represents a significant benefit of using quantum dots with permanent, built-in spontaneous polarization.

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Section: Resultsmentioning

confidence: 99%

“…Since the original, pioneering research of [2] has shown that these quantum dots may be synthesized from materials that do have large, internal, built-in spontaneous polarizations. Examples of such synthesis techniques are given in [3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

The Use of Semiconductor Quantum Dots with Large, Built-In Spontaneous Polarizations for the Electric Potential Stimulation of Biological Structures on the Nanoscale

Zia,

Stroscio,

Dutta

2023

Nanomaterials

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“…The feedstock utilised was binary carbonaceous silicon xerogel and ferric nitrate as catalysts [58]. A femtosecond pulsed laser ablation technique was utilised for the synthesis of 4H-SiC (ø-2.84 nm) with a pulse width of 35 femtoseconds, a repetition rate of 1 kHz, a wavelength of 800 nm, and a single pulsed energy of 3.5 mJ focused by the lens at a residence time of 1.5 h. The value of the nonlinear absorption coefficient was found to be 3 × 10 −13 m•W −1 [59]. A controlled generation of pyramid-shaped SiC nanoparticles (ø-5-20 nm) was implemented by the carbonate contamination of the silicon surface at a temperature range of 780-880 • C in the absence of oxygen.…”

Section: Synthesis Of Nanoparticles Of Sicmentioning

confidence: 99%

A Systematic Review on the Synthesis of Silicon Carbide: An Alternative Approach to Valorisation of Residual Municipal Solid Waste

Thulasiraman

Ganesapillai

2023

Processes

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Over the past several decades, industrialised and developing nations have attempted to enhance sustainability. Demands for energy and the acceleration in environmental deterioration are the two primary obstacles to progress. The daily generation of municipal solid waste has been a significant factor in the deterioration of the ecology. To address this issue, a considerable amount of municipal solid waste may be used to synthesise SiC nanomaterials from organic and inorganic fractions and use them as carbon and silica sources. Nanomaterials have progressively received widespread prominence as the development of particulate materials accelerates at an incredible rate. One such material is silicon carbide (SiC), which has garnered considerable interest due to its remarkable performance and wide variety of applications. This review article discusses the SiC polytypes, including cubic, hexagonal, and rhombohedral SiC. The characteristics of silicon carbide, such as its biomimetic, surface, and thermal properties, are also discussed. In addition, the synthesis of silicon carbide was described in depth, including microwave sintering, the calcination method, the carbothermal redox reaction, and much more. The final section describes the applications of silicon carbide, including wastewater treatment, medical implants, and gas detection.

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“…Here, pulsed laser ablation in liquids (PLALs) is one of the simplest as well as versatile techniques to directly synthesize colloidal solutions of “green” nanostructures that can be employed for different applications such as biosensing, bioimaging, catalysis or theranostics [ 6 , 7 , 8 , 9 , 10 ]. Indeed, the easy preparation of colloids containing semiconductor, metallic or bimetallic NPs is successfully demonstrated using a large set of different laser sources [ 11 , 12 , 13 , 14 , 15 , 16 , 17 ].…”

Section: Introductionmentioning

confidence: 99%

Merging of Bi-Modality of Ultrafast Laser Processing: Heating of Si/Au Nanocomposite Solutions with Controlled Chemical Content

Ryabchikov,

Mirza,

Flimelová

et al. 2024

Nanomaterials

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Ultrafast laser processing possesses unique outlooks for the synthesis of novel nanoarchitectures and their further applications in the field of life science. It allows not only the formation of multi-element nanostructures with tuneable performance but also provides various non-invasive laser-stimulated modalities. In this work, we employed ultrafast laser processing for the manufacturing of silicon–gold nanocomposites (Si/Au NCs) with the Au mass fraction variable from 15% (0.5 min ablation time) to 79% (10 min) which increased their plasmonic efficiency by six times and narrowed the bandgap from 1.55 eV to 1.23 eV. These nanostructures demonstrated a considerable fs laser-stimulated hyperthermia with a Au-dependent heating efficiency (~10–20 °C). The prepared surfactant-free colloidal solutions showed good chemical stability with a decrease (i) of zeta (ξ) potential (from −46 mV to −30 mV) and (ii) of the hydrodynamic size of the nanoparticles (from 104 nm to 52 nm) due to the increase in the laser ablation time from 0.5 min to 10 min. The electrical conductivity of NCs revealed a minimum value (~1.53 µS/cm) at 2 min ablation time while their increasing concentration was saturated (~1012 NPs/mL) at 7 min ablation duration. The formed NCs demonstrated a polycrystalline Au nature regardless of the laser ablation time accompanied with the coexistence of oxidized Au and oxidized Si as well as gold silicide phases at a shorter laser ablation time (<1 min) and the formation of a pristine Au at a longer irradiation. Our findings demonstrate the merged employment of ultrafast laser processing for the design of multi-element NCs with tuneable properties reveal efficient composition-sensitive photo-thermal therapy modality.

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Fabrication of 4H–SiC nanoparticles using femtosecond pulsed laser ablation in deionized water

Cited by 8 publications

References 55 publications

The Use of Semiconductor Quantum Dots with Large, Built-In Spontaneous Polarizations for the Electric Potential Stimulation of Biological Structures on the Nanoscale

The Use of Semiconductor Quantum Dots with Large, Built-In Spontaneous Polarizations for the Electric Potential Stimulation of Biological Structures on the Nanoscale

A Systematic Review on the Synthesis of Silicon Carbide: An Alternative Approach to Valorisation of Residual Municipal Solid Waste

Merging of Bi-Modality of Ultrafast Laser Processing: Heating of Si/Au Nanocomposite Solutions with Controlled Chemical Content

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