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Bridging Nano- and Microtribology in Mechanical and Biomolecular Layers

  • Agnieszka Tomala
  • Hakan Göçerler
  • Ille C. Gebeshuber
Chapter
Part of the NanoScience and Technology book series (NANO)

Abstract

The physical and chemical composition of surfaces determine various important properties of solids such as corrosion rates, adhesive properties, frictional properties, catalytic activity, wettability, contact potential and – finally and most importantly – failure mechanisms. Very thin, weak layers (of man-made and biological origin) on much harder substrates that reduce friction are the focus of the micro- and nanotribological investigations presented in this chapter.Biomolecular layers fulfil various functions in organs of the human body. Examples comprise the skin that provides a protective physical barrier between the body and the environment, preventing unwanted inward and outward passage of water and electrolytes, reducing penetration by destructive chemicals, arresting the penetration of microorganisms and external antigens and absorbing radiation from the sun, or the epithelium of the cornea that blocks the passage of foreign material, such as dust, water and bacteria, into the eye and that contributes to the lubrication layer that ensures smooth movement of the eyelids over the eyeballs.Monomolecular thin films, additive-derived reaction layers and hard coatings are widely used to tailor tribological properties of surfaces. Nanotribological investigations on these substrates can reveal novel properties regarding the orientation of chemisorbed additive layers, development of rubbing films with time and the relation of frictional properties to surface characteristics in diamond coatings.Depending on the questions to be answered with the tribological research, various micro- and nanotribological measurement methods are applied, including scanning probe microscopy (AFM, FFM), scanning electron microscopy, microtribometer investigations, angle-resolved photoelectron spectroscopy and optical microscopy. Thoughts on the feasibility of a unified approach to energy-dissipating systems and how it might be reached (touching upon new ways of scientific publishing, dealing with over-information regarding the literature and the importance of specialists as well as generalists in tribology) conclude this chapter.

Keywords

Friction Force Stratum Corneum Lateral Force Reaction Layer Diamond Film 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgements

The authors are grateful to the European Commission for supporting part of this work through their WEMESURF Marie Curie Research Training Network. The National University of Malaysia (Universiti Kebangsaan Malaysia) funded part of this work with its leading-edge research project scheme ‘Arus Perdana’.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  • Agnieszka Tomala
    • 1
  • Hakan Göçerler
    • 1
  • Ille C. Gebeshuber
    • 2
  1. 1.AC2T Research GmbH, Austrian Center of Competence for TribologyNeustadtAustria
  2. 2.Institute of Applied PhysicsVienna University of TechnologyWienAustria

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