Skip to content
Journal article

Contact angle hysteresis: A molecular interpretation

Schwartz A ...see all

Journal of Colloid And Interface Science, vol. 75, issue 2 (1980) pp. 404-408

  • 10


    Mendeley users who have this article in their library.
  • 26


    Citations of this article.
  • 213


    ScienceDirect users who have downloaded this article.
Sign in to save reference


"Intrinsic contact angle hysteresis" is defined as hysteresis that cannot be ascribed to roughness, heterogeneity, or penetrability of the solid surface. It can be explained if we postulate that the layer of liquid immediately adjacent to the solid surface has an ordered structure similar to that of a liquid monocrystal. This structure is fluid (zero yield point in shear) in the plane of the solid surface and presents no obstacle to an increase of the solid-liquid interfacial area (advancing of the three-phase boundary line). In planes normal to the solid surface the structure has a positive yield point in shear, which prevents decrease of the solid-liquid interfacial area (receding of the three-phase line) until the yield point is exceeded by the surface pressure ??SL. Mechanical stability of the system at all values of the contact angle between the "advancing" and "receding" angles ??A and ??R is ascribed to a continuously changing value of ??SL and of the corresponding specific interfacial free energy ??SL in this interval. This change reflects the elastic response in shear of the solid-liquid interfacial film in planes normal to the solid surface in this interval. ?? 1980.

Get free article suggestions today

Mendeley saves you time finding and organizing research

Sign up here
Already have an account ?Sign in

Find this document

Get full text


  • Anthony M. Schwartz

Cite this document

Choose a citation style from the tabs below