Plasma Surface Modification of Polymer Substrates for Selective Hydrophobic Control

The main objective of this study is theoretical and experimental investigation of the surfaces modification of SU8, PDMS, SiO₂ and Si by plasma RF treatment. Physical-chemical reactions at room temperature can be used for the modifications of the surfaces in plasma, by modifying the contact angle, superficial polymerization, or by creating hydrophilic regions and/or hydrophobic on the surfaces in contact with plasma. The argon-plasma annealing was used to generate the hydrophilic surfaces, and plasma of CF₄ or CF₄ with O₂ has been used to create hydrophobic surfaces.