subroughness (rus. субшероховатость) — micropattern of the smallest elements of the surface, which participate in forming the roughness.


Subroughness can be detected by using modern precision methods and means of surface analysis, such as scanning tunnelling microscopy and atomic force microscopy, which have a resolution of about 1-10 nm. Subroughness originates from surface irregularities with characteristic dimensions of 1-100 nm in height and 10-1000 nm in width. Subroughness is closely related to the inner structure of solids and its defects, as well as the interface between the surface and the environment (such processes as oxidation and adsorption).


  • Goryacheva Irina G.
  • Dobychin Michael N.


  1. Myshkin N.K., Petrokovets M. I., Chizhik S. A. Basic problems in contact characterization at nanolevel // Trib. Int. 1999. V. 32, №7. P. 379–385.