Encyclopedia of Nanotechnology

Living Edition
| Editors: Bharat Bhushan

Superoleophobicity of Fish Scales

  • Lei JiangEmail author
  • Ling Lin
Living reference work entry
DOI: https://doi.org/10.1007/978-94-007-6178-0_259-2



Superoleophobicity of fish scales is a wetting phenomenon in which fish scales show oil repellency in water, with a static oil contact angle (CA) higher than 150°. Generally, underwater superoleophobicity is defined as a static oil CA higher than 150° on a solid surface in an oil/water/solid three-phase system.

Chemical and Physical Principles

Wettability is a fundamental property of solid surfaces, which not only affects the behavior of the creatures in nature but also plays an important role in all aspects of our life. A direct expression of wetting behavior is a static CA of a liquid droplet sitting on a solid surface when the surface tensions at multiphase interfaces reach thermodynamic equilibrium.

For an ideal flat surface in a liquid/gas/solid system, the CA (/θ/) is given by the Young’s equation [ 1]:
$$ \cos \uptheta =\frac{\lambda sg + \lambda sl}{\lambda lg} $$


Contact Angle Superhydrophobic Surface Nanostructured Surface Fish Scale Apparent Contact Angle 
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.
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Copyright information

© Springer Science+Business Media Dordrecht 2015

Authors and Affiliations

  1. 1.Center of Molecular SciencesInstitute of Chemistry Chinese Academy of SciencesBeijingPeople’s Republic of China
  2. 2.Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Organic SolidsInstitute of Chemistry Chinese Academy of SciencesBeijingPeople’s Republic of China