The higher the surface energy of the solid substrate in relation to the surface tension of the liquid, the better its wettability, and the smaller the contact Angle.
较高的表面能量的固体基质有关的表面张力的液体，它的更好的润湿性，较小的接触角。
2
It is shown from the analysis of surface tension that the hot and ion cleaning of photocathode glass substrate can increase the certain degree.
During the laser sintering, due to the large liquid phase viscosity and surface tension, the balling effect occurred when the molten did not wet the solid metal particle and the underlying substrate.