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Issue 37, 2013
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Quantized friction across ionic liquid thin films

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Abstract

Ionic liquids – salts in the liquid state under ambient conditions – are of great interest as precision lubricants. Ionic liquids form layered structures at surfaces, yet it is not clear how this nano-structure relates to their lubrication properties. We measured the friction force between atomically smooth solid surfaces across ionic liquid films of controlled thickness in terms of the number of ion layers. Multiple friction–load regimes emerge, each corresponding to a different number of ion layers in the film. In contrast to molecular liquids, the friction coefficients differ for each layer due to their varying composition.

Graphical abstract: Quantized friction across ionic liquid thin films

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Publication details

The article was received on 03 Jul 2013, accepted on 06 Aug 2013 and first published on 07 Aug 2013


Article type: Communication
DOI: 10.1039/C3CP52779D
Citation: Phys. Chem. Chem. Phys., 2013,15, 15317-15320
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    Quantized friction across ionic liquid thin films

    A. M. Smith, K. R. J. Lovelock, N. N. Gosvami, T. Welton and S. Perkin, Phys. Chem. Chem. Phys., 2013, 15, 15317
    DOI: 10.1039/C3CP52779D

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