Development of a roll-to-roll hot imprinting process for superhydrophobic polytetrafluoroethylene surfaces. (27th August 2019)

• Record Type: Journal Article
• Authors: Moon, I Y; Lee, H W; Oh, Y S; Kim, S J; Kim, J H; Kang, S H
• Is Part Of: Journal of micromechanics and microengineering. Volume 29:Number 11(2019:Nov.)
• Publication Date: 2019-08-27
• Subjects: roll-to-roll imprinting -- hierarchical patterns -- PTFE -- superhydrophobic -- crystallinity; Microelectromechanical systems -- Periodicals; Micromechanics -- Periodicals; 621.38105
• DOI: 10.1088/1361-6439/ab38e8
• Languages: English
• ISSNs: 0960-1317

Abstract

Abstract: Potential applications of superhydrophobic surfaces have attracted many researchers. Although numerous methods have been suggested to achieve superhydrophobic surfaces on various types of materials, only a few methods are suitable for process simplicity, productivity and large area applicability. In this study, we developed a roll-to-roll hot imprinting process for superhydrophobic surfaces to overcome such limitations. Hierarchical patterns were fabricated on the roll surface through wire electrical discharge machining. Through the roll-to-roll hot imprinting process using the pattern roll, the hierarchical patterns were transferred to the polytetrafluoroethylene surface. As a result, superhydrophobic surfaces with a water contact angle of 150° or more were obtained.