Please use this identifier to cite or link to this item: https://doi.org/10.1117/12.486522
Title: Laser ablation induced nanoparticles in water
Authors: Chen, G.X. 
Hong, M.H.
Liu, X.H.
Wang, W.J.
Lu, Y.F. 
Chong, T.C.
Keywords: Exchange coupling
Laser ablation
Magnetic nanoparticles
Optical microscope
PL spectra
SEM
Solution
UV-vis spectra
VSM
Issue Date: 2002
Source: Chen, G.X., Hong, M.H., Liu, X.H., Wang, W.J., Lu, Y.F., Chong, T.C. (2002). Laser ablation induced nanoparticles in water. Proceedings of SPIE - The International Society for Optical Engineering 4830 : 222-227. ScholarBank@NUS Repository. https://doi.org/10.1117/12.486522
Abstract: Cobalt nanoparticles have been fabricated by laser ablation of metal target at laser wavelengths of 1064 nm and 532 nm. The target was immersed in water during the ablation. Size of the resulted nanoparticles was determined by optical microscope and field emission scanning electron microscope (FESEM). It was observed that the minimum particle was 6 nm in diameter. Ultraviolet to visible (UV-vis) spectra and photoluminescence (PL) spectra were applied to characterize the optical properties of these products. In order to investigate the magnetic properties, the particles were spread on clean substrates for vibrating sample magnetometer (VSM) measurement. It was fond that magnetic properties of generated cobalt nanoparticles were obviously influenced by their sizes. Effects for the different laser wavelengths on particle formation were compared.
Source Title: Proceedings of SPIE - The International Society for Optical Engineering
URI: http://scholarbank.nus.edu.sg/handle/10635/70755
ISSN: 0277786X
DOI: 10.1117/12.486522
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