Z Liu et al 2009 J. Micromech. Microeng. 19 054008 doi:10.1088/0960-1317/19/5/054008
Z Liu1, Y Yuan1, S Khan1, A Abdolvand2, D Whitehead2, M Schmidt2 and L Li2
Show affiliationsIn recent years, laser ablation in liquid has become an increasingly important technique for the fabrication of nanoparticles (NPs). To date, only pulsed lasers have been used. This paper reports our recent studies on the generation of Ti-oxide and Ni-oxide NPs by the ablation of metal targets in aqueous environments using a high-power, high-brightness continuous-wave (cw) fibre laser at a wavelength of 1070 nm. Owing to the high and uniform irradiation, the fibre laser provides an alternative approach for NP generation with well-controlled phase, size and size distribution, along with high production rate. Characterization of the NPs, in terms of morphology, size and size distribution, chemical composition and phase structure, by means of high-resolution transmission electron microscopy (HRTEM), high-angle annular dark field (HAADF) in scanning-transmission (STEM) mode, energy-dispersive x-ray spectroscopy (EDS) and x-ray diffraction (XRD), has been presented. In addition, limitations of the cw fibre laser process have been discussed in comparison with pulsed laser process.
81.07.-b Nanoscale materials and structures: fabrication and characterization
61.80.Ba Ultraviolet, visible, and infrared radiation effects (including laser radiation)
68.37.Lp Transmission electron microscopy (TEM)
68.37.Hk Scanning electron microscopy (SEM) (including EBIC)
Surfaces, interfaces and thin films
Issue 5 (May 2009)
Received 16 September 2008, in final form 23 December 2008
Published 14 April 2009
Z Liu et al 2009 J. Micromech. Microeng. 19 054008
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Jodi L Mead and Rosemary A Renaut 2009 Inverse Problems 25 025002
E W Bethel et al 2009 J. Phys.: Conf. Ser. 180 012084
Trilisa M Perrine and Barry D Dunietz 2007 Nanotechnology 18 424003