Nanoparticle formation by the debris produced by femtosecond laser ablation of silicon in ambient air

N. G. Semaltianos; W. Perrie; V. Vishnyakov; R. Murray; C. J. Williams; S. P. Edwardson; G. Dearden; P. French; M. Sharp; S. Logothetidis; K. G. Watkins

doi:10.1016/j.matlet.2007.11.087

Nanoparticle formation by the debris produced by femtosecond laser ablation of silicon in ambient air

N. G. Semaltianos, W. Perrie, V. Vishnyakov, R. Murray, C. J. Williams, S. P. Edwardson, G. Dearden, P. French, M. Sharp, S. Logothetidis, K. G. Watkins

Research output: Contribution to journal › Article › peer-review

27 Citations (Scopus)

Abstract

The debris produced by femtosecond laser ablation (180 fs, 775 nm, 1 kHz) of Si in ambient air is deposited around the ablated craters in a circular zone with diameters between ~ 40 and 300 μm for laser fluences (F) in the region F = 0.2-8 J/cm². The debris consists of nanoparticles. The mean height of the nanoparticles increases with laser fluence (from ~ 70 to 500 nm for fluences in the range F = 0.25-4.38 J/cm²) but at high fluences (F = 8 J/cm²) becomes equal to ~ 170 nm. The average horizontal dimension of the nanoparticles increases with laser fluence. Their average vertical dimension increases in proportion to their average horizontal dimension, but at high fluences becomes much smaller than their corresponding average horizontal dimension. The nanoparticles were found to be single crystals with d spacing of 1.71 ± 0.08 Å (corresponding to {311}).

Original language	English
Pages (from-to)	2165-2170
Number of pages	6
Journal	Materials Letters
Volume	62
Issue number	14
Early online date	3 Dec 2007
DOIs	https://doi.org/10.1016/j.matlet.2007.11.087
Publication status	Published - 15 May 2008
Externally published	Yes

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title = "Nanoparticle formation by the debris produced by femtosecond laser ablation of silicon in ambient air",

abstract = "The debris produced by femtosecond laser ablation (180 fs, 775 nm, 1 kHz) of Si in ambient air is deposited around the ablated craters in a circular zone with diameters between ~ 40 and 300 μm for laser fluences (F) in the region F = 0.2-8 J/cm2. The debris consists of nanoparticles. The mean height of the nanoparticles increases with laser fluence (from ~ 70 to 500 nm for fluences in the range F = 0.25-4.38 J/cm2) but at high fluences (F = 8 J/cm2) becomes equal to ~ 170 nm. The average horizontal dimension of the nanoparticles increases with laser fluence. Their average vertical dimension increases in proportion to their average horizontal dimension, but at high fluences becomes much smaller than their corresponding average horizontal dimension. The nanoparticles were found to be single crystals with d spacing of 1.71 ± 0.08 {\AA} (corresponding to {311}).",

keywords = "Atomic force microscopy, Laser processing, Nanomaterials",

author = "Semaltianos, {N. G.} and W. Perrie and V. Vishnyakov and R. Murray and Williams, {C. J.} and Edwardson, {S. P.} and G. Dearden and P. French and M. Sharp and S. Logothetidis and Watkins, {K. G.}",

year = "2008",

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doi = "10.1016/j.matlet.2007.11.087",

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AU - Semaltianos, N. G.

AU - Perrie, W.

AU - Vishnyakov, V.

AU - Murray, R.

AU - Williams, C. J.

AU - Edwardson, S. P.

AU - Dearden, G.

AU - French, P.

AU - Sharp, M.

AU - Logothetidis, S.

AU - Watkins, K. G.

PY - 2008/5/15

Y1 - 2008/5/15

N2 - The debris produced by femtosecond laser ablation (180 fs, 775 nm, 1 kHz) of Si in ambient air is deposited around the ablated craters in a circular zone with diameters between ~ 40 and 300 μm for laser fluences (F) in the region F = 0.2-8 J/cm2. The debris consists of nanoparticles. The mean height of the nanoparticles increases with laser fluence (from ~ 70 to 500 nm for fluences in the range F = 0.25-4.38 J/cm2) but at high fluences (F = 8 J/cm2) becomes equal to ~ 170 nm. The average horizontal dimension of the nanoparticles increases with laser fluence. Their average vertical dimension increases in proportion to their average horizontal dimension, but at high fluences becomes much smaller than their corresponding average horizontal dimension. The nanoparticles were found to be single crystals with d spacing of 1.71 ± 0.08 Å (corresponding to {311}).

AB - The debris produced by femtosecond laser ablation (180 fs, 775 nm, 1 kHz) of Si in ambient air is deposited around the ablated craters in a circular zone with diameters between ~ 40 and 300 μm for laser fluences (F) in the region F = 0.2-8 J/cm2. The debris consists of nanoparticles. The mean height of the nanoparticles increases with laser fluence (from ~ 70 to 500 nm for fluences in the range F = 0.25-4.38 J/cm2) but at high fluences (F = 8 J/cm2) becomes equal to ~ 170 nm. The average horizontal dimension of the nanoparticles increases with laser fluence. Their average vertical dimension increases in proportion to their average horizontal dimension, but at high fluences becomes much smaller than their corresponding average horizontal dimension. The nanoparticles were found to be single crystals with d spacing of 1.71 ± 0.08 Å (corresponding to {311}).

KW - Atomic force microscopy

KW - Laser processing

KW - Nanomaterials

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EP - 2170

JO - Materials Letters

JF - Materials Letters

SN - 0167-577X

IS - 14

ER -

Nanoparticle formation by the debris produced by femtosecond laser ablation of silicon in ambient air

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