Hello. Recently, I have read the article about plasma surface treatment. The article says contact of the plasma to the surface of the sample increases surface energy by transferring plasma energy to the surface. Then it is suddenly saying that wettability of some industrial ink or paints on that surface becomes improved. So I can only suspect that wettability and the surface energy of the sample is correlated. But I don't know how they're related. Could you please tell me why the higher surface energy of the sample attracts liquids more so wetting becomes good?