Energetics for carbon clusters produced directly by laser vaporization of graphite: dependence on laser power and wavelength

Gaumet, Jean‐Jacques; Wakisaka, Akihiro; Shimizu, Yukio; Tamori, Yukio

doi:10.1039/ft9938901667

Cited by 71 publications

(42 citation statements)

References 8 publications

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“…An amorphous carbon (a-C) thin film has been reported to be a promising material in various fields of industrial applications, such as field electron emitters, surface coatings and tribological materials [7][8][9][10][11][12][13][14]. In particular, efficient electron emission was observed from a-C thin films composed of nanoparticles [8].…”

Section: Introductionmentioning

confidence: 99%

“…Au is deposited on the film by vacuum evaporation. and Cn + ablated from a graphite target is n = 1-3, and molten droplets are hardly generated [1,[9][10][11][12]. Fig.…”

Section: Characterization Of Nanoparticlesmentioning

confidence: 99%

“…In this figure, any differences between the ratios for both ambiences are hardly seen. In order to understand the dependence of the sp 3 /sp 2 carbon ratio on pAr, we will introduce the 8 following surface chemistry model [18][19][20][21] and related data on kinetic energy εC+ of Cn + and Cn (n = 1-3) reported so far [9][10][11][12]22].…”

Section: Xps Analysismentioning

confidence: 99%

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Preparation of carbon nanoparticles by plasma-assisted pulsed laser deposition method—size and binding energy dependence on ambient gas pressure and plasma condition

et al. 2002

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Nanometer-size carbon particles were prepared on a Si substrate using pulsed laser deposition (PLD) assisted by radio frequency (RF) Ar plasma and were compared with ones prepared by PLD in vacuum and Ar gas. In both the plasma and gas ambiences, experiments were carried out in Ar pressure pAr ranging from 0.13 to 13 Pa. The particle size increased as pAr increased. However, the size obtained in the RF Ar plasma was approximately 1.5 times larger than that prepared in the Ar gas.An X-ray photoelectron spectroscopy (XPS) analysis revealed that the carbon film 2 covered by the particles was in an amorphous state. The sp 3 /sp 2 carbon ratio of the film was evaluated by deconvolution of XPS carbon (1s) spectra into three components, which are attributed to diamond (sp 3 ), graphite (sp 2 ) and carbon oxide components. The highest sp 3 /sp 2 ratio was 0.4 in the Ar gas and Ar plasma at pAr = 0.13 Pa. The sp 3 /sp 2 ratio decreases monotonously, as the particle size increases. The ratio obtained in the Ar plasma is larger than that in the Ar gas. The effects of pAr and plasma for nanoparticle characteristic are discussed.

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Section: Introductionmentioning

confidence: 99%

“…Au is deposited on the film by vacuum evaporation. and Cn + ablated from a graphite target is n = 1-3, and molten droplets are hardly generated [1,[9][10][11][12]. Fig.…”

Section: Characterization Of Nanoparticlesmentioning

confidence: 99%

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Preparation of carbon nanoparticles by plasma-assisted pulsed laser deposition method—size and binding energy dependence on ambient gas pressure and plasma condition

et al. 2002

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“…[14] It was assumed that initially clustered C n , C n + (n = 1-3) were ablated and started to nucleate by radical reaction. [10,15] The nucleated particles continued to grow and become negatively charged.…”

Section: Surface Morphologymentioning

confidence: 99%

“…The presence of C n + in the carbon plume is confirmed by the current waveform measurements [15] and the study of mass spectrometry. [10] In an Ar gas environment, the emission spectra from the plume show the presence of excited Ar and Ar + . [16] Therefore, it may also be considered that the excited Ar and Ar + contribute to the growth of the particles.…”

Section: Surface Morphologymentioning

confidence: 99%

Deposition of fine carbon particles using pulsed ArF laser ablation assisted by inductively coupled plasma

et al. 2000

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Carbon thin films containing many fine carbon particles were deposited by a pulsed ArF laser ablation technique assisted by inductively coupled plasma (ICP). The sizes of the particles were found to be ~ 100 nm. The particles seemed to be coagulated from several finer particles of size ~ 10 nm. When ICP was applied to a plume, the shape of the coagulated particles became spherical. The deposited surface was assumed to be diamond-like carbon based on the binding energy of carbon (1s) in the particle obtained by XPS spectra.

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Laser-Induced Thermal Processes: Heat Transfer, Generation of Stresses, Melting and Solidification, Vaporization, and Phase Explosion

Shugaev

Lévy

et al. 2021

Handbook of Laser Micro- And Nano-Engineering

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Energetics for carbon clusters produced directly by laser vaporization of graphite: dependence on laser power and wavelength

Cited by 71 publications

References 8 publications

Preparation of carbon nanoparticles by plasma-assisted pulsed laser deposition method—size and binding energy dependence on ambient gas pressure and plasma condition

Preparation of carbon nanoparticles by plasma-assisted pulsed laser deposition method—size and binding energy dependence on ambient gas pressure and plasma condition

Deposition of fine carbon particles using pulsed ArF laser ablation assisted by inductively coupled plasma

Laser-Induced Thermal Processes: Heat Transfer, Generation of Stresses, Melting and Solidification, Vaporization, and Phase Explosion

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