Surface Tension and Bubbles
From a molecular perspective, we described the origin of surface tension. Surface tension is exceptionally good at rounding things out, such as bubbles can produce in surfactant solution , also in liquid or vapor-liquid phase transition. Through the experiment of determination of saturated vapor pressure of pure liquids, maybe we can conclude that almost all the bubbles were generated as result of the breakup of the gas-liquid interface.
Hao Zhang, Yang Fu and Zhong Tang
C. X. Xu and H. R. Tang, "Surface Tension and Bubbles", Advanced Materials Research, Vols. 354-355, pp. 37-40, 2012