Hydrophobicity Enhancement of Mesh-like Surface for Moist Air Condensation

Condensation on surfaces with low wettability is of great significance in microfluidics and the fabrication of nanostructures. In this work, condensation process of water vapor from moist air flowing on a mesh-like surface is investigated experimentally at controlled environment condition. In order to execute condensation, temperature difference is increased between the air dew point and Cu mesh surface temperature. The hydrophobicity on mesh-like surface is enhanced using chemical texturing. The static and dynamic surface properties are moderated on this fabricated mesh-like surface with contact angle hysteresis of 16°. Thus, this type of surface is suitable for improving the performances of condensation and to extend their practical applications worldwide.