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Surface free energy of laser-produced bond percolators

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Abstract

Pulsed laser irradiation of thin metallic films on non-wetted substrates creates two-dimensional bond percolator structures. We show that these can be understood as frozen minimum free energy configurations. The spacing between nodes is found to depend linearly on the initial film thickness, as verified experimentally for the case of a Ti film on sapphire.

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References

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  5. The influence of gravity is easily shown to be negligible by comparing the capillary constant a [Landau, Lifshitz:Fluid Mechanics (Pergamon, Linder 1959) p. 232, to the film thickness. For liquid metals we have aR>1 mm, very large compared to the film thickness

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Authors and Affiliations

  1. Institut für Angewandte Physik Universität, CH-3012, Bern, Switzerland

    M. Thuillard & M. von Allmen

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  1. M. Thuillard
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  2. M. von Allmen
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Thuillard, M., von Allmen, M. Surface free energy of laser-produced bond percolators. Appl. Phys. A 43, 143–146 (1987). https://doi.org/10.1007/BF00617968

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  • DOI: https://doi.org/10.1007/BF00617968

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