From natural lotus leaf to highly hard-flexible diamond-like carbon surface with superhydrophobic and good tribological performance

Ying Wang, Liping Wang, Shuncai Wang, Robert J.K. Wood, Qunji Xue
Surface and Coatings Technology, Volume 206, Issues 8–9, January 2012

Abstract

Fabrication of hard-flexible and superhydrophobic carbon films is considered as a challenging issue for expanding the applications of diamond-like carbon (DLC) films. In this paper, a novel method for fabricating highly hard, flexible and superhydrophobic DLC films with bio-mimicking micro textures using natural lotus leaf as templates is reported. By combining nanocasting, electroplating methods and finally physical vapor deposition, DLC films with “lotus leaf”-like textures were successfully fabricated, which exhibited good balance of high hardness (approximately 21 GPa) and toughness as well as excellent superhydrophobicity with contact angle up to 160°. Furthermore, the as-prepared superhydrophobic DLC films could remain as an effect lubricant layer. Combination of excellent physical and mechanical properties of highly hard, superhydrophobic as well as flexible DLC films with bio-mimicking textures will be beneficial for their potential applications as engineering material.

From natural lotus leaf to highly hard-flexible diamond-like carbon surface with superhydrophobic and good tribological perform

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