University Chemistry ›› 2016, Vol. 31 ›› Issue (9): 77-82.doi: 10.3866/PKU.DXHX201512011

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Discussion on the Surface Tension and the Surface Free Energy

Zhen-Xing YIN*(),Hui KONG,Hai-Chuan WANG,Jun ZHANG,Zhi-You LIAO,Yuan LI   

  • Published:2016-09-30
  • Contact: Zhen-Xing YIN
  • Supported by:


We reviewed briefly the developing history of two basic concepts, surface tension and surface Gibbs free energy, in physical chemistry of surfaces, and gave a detailed discussion about the formation mechanisms of surface tension and surface free energy and the relationship between the bond energy and the surface tension. Finally, we addressed that while a surface phase could be simplified to a geometric surface, it is an actual phase which is always a metastable state owing to the surface free energy.

Key words: Surface tension, Surface free energy, Bond energy, Surface phase, Metastable state


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