Laser-ablation-induced nanoparticles in water

G. X. Chen; Ming Hui Hong; Xiao Hua Liu; W. J. Wang; Y. F. Lu; Tow Chong Chong

doi:10.1117/12.486522

19 February 2003 Laser ablation induced nanoparticles in water

G. X. Chen, Ming Hui Hong, Xiao Hua Liu, W. J. Wang, Y. F. Lu, Tow Chong Chong

Proceedings Volume 4830, Third International Symposium on Laser Precision Microfabrication; (2003) https://doi.org/10.1117/12.486522
Event: LAMP 2002: International Congress on Laser Advanced Materials Processing, 2002, Osaka, Japan

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.

Citation Download Citation

G. X. Chen, Ming Hui Hong, Xiao Hua Liu, W. J. Wang, Y. F. Lu, and Tow Chong Chong "Laser ablation induced nanoparticles in water", Proc. SPIE 4830, Third International Symposium on Laser Precision Microfabrication, (19 February 2003); https://doi.org/10.1117/12.486522

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