期刊
NANOTECHNOLOGY
卷 20, 期 10, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/0957-4484/20/10/105303
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资金
- Russian Foundation for Basic Research [07-02-00757, 07-02-12209]
- Scientific School [8108.2006.2]
- European Commission [RII3-CT-2003-506350]
Experimental results are presented on the formation of self-organized nanostructures (NSs) on a bulk Al target under its ablation in liquids-water and ethanol-with short laser pulses from 180 femtoseconds (fs) through 350 picoseconds (ps). NSs are characterized by atomic force microscopy, field emission scanning electron microscopy, optical absorption spectroscopy and x-ray diffraction. The period of NSs does not depend on the laser wavelength used from 248 through 800 nm and is approximately 200 nm. NSs on Al show the characteristic absorption peak in the near UV which has been attributed to plasmon oscillation of electrons. The wings of this peak, extending to the visible, lead to a distinct yellow coloration of the processed Al surface. Ultrafast laser structuring of bulk aluminum in liquids may be potentially a promising technique for efficient production of nanosized aluminum.
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