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Applied physics and interfaces

Positively 'negative' friction

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Friction classically decreases with decreasing load. Nanoscale measurements on chemically modified graphite now show an opposite trend related to local deformation, which could serve as a probe for determining the exfoliation energy of layered materials.

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Figure 1: Mechanism of effective 'negative' friction in chemically modified graphite.

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Authors and Affiliations

  1. Kathryn Wahl is in the Chemistry Division of the US Naval Research Laboratory, Washington DC 20375-5342, USA,

    Kathryn J. Wahl

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  1. Kathryn J. Wahl
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Correspondence to Kathryn J. Wahl.

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Wahl, K. Positively 'negative' friction. Nature Mater 11, 1004–1005 (2012). https://doi.org/10.1038/nmat3494

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