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Issue 37, 2009
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Energy driven self-organization in nanoscale metallic liquid films

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Abstract

Nanometre thick metallic liquid films on inert substrates can spontaneously dewet and self-organize into complex nanomorphologies and nanostructures with well-defined length scales. Nanosecond pulses of an ultraviolet laser can capture the dewetting evolution and ensuing nanomorphologies, as well as introduce dramatic changes to dewetting length scales due to the nanoscopic nature of film heating. Here, we show theoretically that the self-organization principle, based on equating the rate of transfer of thermodynamic free energy to rate of loss in liquid flow, accurately describes the spontaneous dewetting. Experimental measurements of laser dewetting of Ag and Co liquid films on SiO2 substrates confirm this principle. This energy transfer approach could be useful for analyzing the behavior of nanomaterials and chemical processes in which spontaneous changes are important.

Graphical abstract: Energy driven self-organization in nanoscale metallic liquid films

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Publication details

The article was received on 30 Mar 2009, accepted on 12 Jun 2009 and first published on 14 Jul 2009


Article type: Communication
DOI: 10.1039/B906281P
Citation: Phys. Chem. Chem. Phys., 2009,11, 8136-8143
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    Energy driven self-organization in nanoscale metallic liquid films

    H. Krishna, N. Shirato, C. Favazza and R. Kalyanaraman, Phys. Chem. Chem. Phys., 2009, 11, 8136
    DOI: 10.1039/B906281P

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