Carbonization of Silicon Nanoparticles via Ablation Induced by Femtosecond Laser Pulses in Hexane

Xi, Yu; Terakawa, Shusaku; Hayashi, Shunsuke; Asaka, Toru; Itoigawa, Fumihiro; Ono, Shingo; Takayanagi, Jun

doi:10.1007/s13369-017-2619-7

Cited by 16 publications

(12 citation statements)

References 19 publications

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“…The formation of cristobalite has not been observed, which matches with the low oxygen content determined by EDX (Table 2). The diffractogram of the laser processed silicon surface in an ethene/argon atmosphere shows some similarity to the XRD pattern of SiC nanoparticles formed by laser ablation given in literature [25] …”

Section: Resultssupporting

confidence: 78%

“…The forbidden reflection of Si (200) at 2 θ =33 °has not been observed [67] . Further weak peaks are assigned to the reflections at Si (111) around 2 θ =29° and Si (311) around 2 θ =56° [25] . The formation of β‐SiC has been identified by the characteristic peak positions at 2 θ =33.9° and 35.8° (see insert of Figure 7e) [25,68] .…”

Section: Resultsmentioning

confidence: 90%

“…Further weak peaks are assigned to the reflections at Si (111) around 2 θ =29° and Si (311) around 2 θ =56° [25] . The formation of β‐SiC has been identified by the characteristic peak positions at 2 θ =33.9° and 35.8° (see insert of Figure 7e) [25,68] . The signal at 2 θ =35.8° is caused by diffraction at SiC (111) planes while the broader peak around 2 θ =33.9 is typical for planar defects of the (111) plane [68] .…”

Section: Resultsmentioning

confidence: 99%

“…The direct material transfer has been realized by femtosecond laser treatment of targets from SiC or TiC and deposition of the ablated material on silicon and other substrates [23,24] . SiC nanoparticles have been obtained with femtosecond laser irradiation of silicon immersed in hexane or ethanol, respectively [25,26] . A similar process has been applied on titanium immersed in hexane for the synthesis of TiC microparticles [27] .…”

Section: Introductionmentioning

confidence: 99%

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Formation of Titanium Nitride, Titanium Carbide, and Silicon Carbide Surfaces by High Power Femtosecond Laser Treatment

Fedorov

Lederle

et al. 2021

ChemPlusChem

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Coatings based on titanium nitrides, titanium carbides and silicon carbides can optimize the surface properties of titanium or silicon for various applications ranging from biocompatibility to chemical stability and durability. Here, we investigated a high power (100 W) high pulse repetition rate femtosecond laser process (λ=1030 nm, τ=750 fs, f=1 MHz) for the treatment of titanium and silicon in atmospheres of argon, nitrogen, methane, ethene and acetylene. In a nitrogen atmosphere, a homogeneous coating of TiON is formed on titanium. In an ethene/argon atmosphere coatings of TiOC and SiC are formed on Ti and Si, respectively. The process allows a fast surface transformation with a process rate of 0.33 cm2 s−1 and a high spatial resolution below 0.5 mm with a minimal heat affected zone at the same time. In contrast to low repetition rate femtosecond laser processed samples, the surfaces are more robust against mechanical impact. At the same time, the surfaces reveal a distinct microstructure in comparison to coatings obtained by vapor deposition techniques.

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Section: Resultssupporting

confidence: 78%

Section: Resultsmentioning

confidence: 90%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Formation of Titanium Nitride, Titanium Carbide, and Silicon Carbide Surfaces by High Power Femtosecond Laser Treatment

Fedorov

Lederle

et al. 2021

ChemPlusChem

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“…After resuspension, TEM analysis revealed no adverse effects on particle size. Though there are several instances of carbon deposits forming on the surface of nanoparticles produced by PLAL in organic liquids [37,[44][45][46], the occurrence of such photothermal chemistry has, for the large part, been overlooked in PLAL studies involving functionalized NP synthesis. Therefore, a combination of FTIR and Raman spectroscopy was utilized to investigate the occurrence of degradation of the ablation medium and/or the presence of deposits on the surface of the AuNPs.…”

Section: Resultsmentioning

confidence: 99%

The Influence of Alkanethiols on the Production of Hydrophobic Gold Nanoparticles via Pulsed Laser Ablation in Liquids

et al. 2021

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The ability to suspend plasmonic metal nanoparticles in apolar environments is an important feat towards harnessing their optical properties for use in amphiphilic biological environments. Pulsed laser Ablation in Liquids (PLAL) is a well-established method for the production of gold nanoparticles (AuNPs) in aqueous environments; however, ablation in organic liquids for the synthesis of hydrophobic AuNPs still has many unknowns, such as the relationship between colloidal stability and the ligand shell. In this study, hydrophobic AuNPs were produced by PLAL of gold in a 1-alkanethiol/n-decane solution and treated with laser fragmentation. Results demonstrate that longer chain length ATs produced particles with a smaller average size; however, there was no strong correlation between alkanethiol (AT) concentration and particle size. Stability was investigated by monitoring the temporal evolution of the extinction spectra which revealed that lower concentrations of AT stabilize the colloids while higher concentrations tend to result in quicker particle aggregation. Furthermore, longer chain length ATs demonstrated improved stability. Additionally, vibrational spectroscopy was employed to examine the AuNP surface chemistry, which pointed to the presence of oxidized carbon species and graphitic carbon.

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Formation of Titanium Nitride, Titanium Carbide, and Silicon Carbide Surfaces by High Power Femtosecond Laser Treatment

Fedorov

Lederle

et al. 2021

ChemPlusChem

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Invited for this month's cover is the group of Prof. Eike G. Hübner at Fraunhofer Heinrich Hertz Institute HHI, Goslar and Clausthal University of Technology, Clausthal‐Zellerfeld, Germany. The cover picture shows a titanium plate, on which the crystal structure (golden circle=Ti, blue circle=O/N/C) of isomorphous TiO, TiN or TiC, respectively, has been engraved by a high‐power high pulse repetition rate femtosecond laser process. The process allows for a fast and spatially resolved surface transformation of titanium to golden TiN, blue TiO/TiO2 or black TiC in an atmosphere of nitrogen, air or ethene/argon. The background represents a typical surface microstructure of these interstitial compounds obtained during this transformation. Read the full text of the article at 10.1002/cplu.202100118.

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Carbonization of Silicon Nanoparticles via Ablation Induced by Femtosecond Laser Pulses in Hexane

Cited by 16 publications

References 19 publications

Formation of Titanium Nitride, Titanium Carbide, and Silicon Carbide Surfaces by High Power Femtosecond Laser Treatment

Formation of Titanium Nitride, Titanium Carbide, and Silicon Carbide Surfaces by High Power Femtosecond Laser Treatment

The Influence of Alkanethiols on the Production of Hydrophobic Gold Nanoparticles via Pulsed Laser Ablation in Liquids

Formation of Titanium Nitride, Titanium Carbide, and Silicon Carbide Surfaces by High Power Femtosecond Laser Treatment

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