Nanofractal structure consisting of nanoparticles produced by ultrashort laser pulses

Journal Article · Mon Dec 11 00:00:00 EST 2006 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.2402225· OSTI ID:20880174

Nishikawa, Kumiko; Takano, Kei; Miyahara, Hidekazu; Kawamura, Tohru; Okino, Akitoshi; Hotta, Eiki; Nayuki, Takuya; Oishi, Yuji; Fujii, Takashi; Wang, Xiaofang; Nemoto, Koshichi ^[1]

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1. Department of Energy Sciences, Interdisciplinary Graduate School of Science and Technology, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama, Kanagawa-ken 226-8502 (Japan)

By irradiating subpicosecond laser onto an iron plate, a nanofibrous structure consisting of iron nanoparticles with diameters less than 12 nm was produced. The nanofibrous structure was found to be three-dimensional fractal, and its fractal dimension measured from field-emission scanning electron microscopy images conserved the same fractal dimension of 1.73 in the wide-scale range from 30 nm to 60 {mu}m, and the smallest fractal structure was less than 10 nm. The growth of this fractal is related to the cluster-cluster aggregation model, and it suggests that the fractal structure grew by the attachment of clusters consisting of nanoparticles.

• OSTI ID: 20880174
• Journal Information: Applied Physics Letters, Vol. 89, Issue 24; Other Information: DOI: 10.1063/1.2402225; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
AGGLOMERATION
CRYSTAL GROWTH
FIELD EMISSION
FRACTALS
IRON
LASERS
NANOSTRUCTURES
PARTICLES
PLATES
PULSES
SCANNING ELECTRON MICROSCOPY
THREE-DIMENSIONAL CALCULATIONS