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Inventi Impact - Tribology

Articles

  • Inventi:etb/61/14
    EXPERIMENTAL INVESTIGATIONS OF BIOLOGICAL LUBRICATION AT THE NANOSCALE: THE CASES OF SYNOVIAL JOINTS AND THE ORAL CAVITY
    Javier Sotres, Thomas Arnebrant

    Interactions between surfaces are ubiquitous phenomena in living organisms. Nature has developed sophisticated strategies for lubricating these systems, increasing their efficiency and life span. This includes the use of water-based lubricants, such as saliva and synovial fluid. These fluids overcome the limitations of water as a lubricant by the presence of molecules such as proteins, lipids, and polysaccharides. Such molecules may alter surface interactions through different mechanisms. They can increase viscosity enabling fluid-film lubrication. Moreover, molecules adsorb on the surfaces providing mechanisms for boundary lubrication and preventing wear. The mentioned molecules have typical sizes in the nanometer range. Their interaction, as well as the interaction with the entrapping surfaces, takes place through forces in the range of nanonewtons. It is therefore not surprising that the investigation of these systems have been boosted by development of techniques such as scanning probe microscopies and the surface force apparatus which allow studying tribological processes at the nanoscale. Indeed, these approaches have generated an enormous amount of studies over the last years. The aim of this review is to perform a critical analysis of the current stage of this research, with a main focus on studies on synovial joints and the oral cavity.

    How to Cite this Article
    CC Compliant Citation: Javier Sotres * and Thomas Arnebrant, Experimental Investigations of Biological Lubrication at the Nanoscale: The Cases of Synovial Joints and the Oral Cavity, Lubricants 2013, 1, 102-131; doi:10.3390/lubricants1040102. This article is distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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