Pulsed laser ablation of graphite target in dimethyformamide
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Publication Details
Author list: Thongpool V., Phunpueok A., Piriyawong V., Limsuwan S., Limsuwan P.
Publisher: Elsevier
Publication year: 2013
Journal: Energy Procedia (1876-6102)
Volume number: 34
Start page: 610
End page: 616
Number of pages: 7
ISBN: 9781629935683
ISSN: 1876-6102
eISSN: 1876-6102
Languages: English-Great Britain (EN-GB)
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Abstract
Carbon nanoparticles were synthesized using laser ablation of a graphite target in dimethylformamide (DMF) using Nd: YAG laser with a wavelength of 1064 nm. The target was irradiated by the laser beam with a pulsed energy of 3 J, a pulsed repetition rate of 2 Hz and a pulsed duration of 5 ms. SEM images presented that a flake-like morphology of graphites in the target transformed into a spherical-like shape with a broad size distribution ranging from 80-130 nm. The Raman spectrum showed the structure of graphite was changed after laser ablation. UV-visible and fluorescent spectrometers were used to investigate absorption and emission characteristics of the carbon nanoparticles, respectively. The fluorescent carbon nanoparticles which ablated in DMF can absorb a light in the UV range and emit a fluorescence of bright blue-green color. ฉ 2013 The Authors. Published by Elsevier B.V.
Keywords
Fluorescence
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