Chinese Journal of Lasers, Volume. 41, Issue 9, 903007(2014)
Picosecond Laser Fabrication of Large-Area Surface Micro-Nano Lotus-Leaf Structures and Replication of Superhydrophobic Silicone Rubber Surfaces
The self-cleaning lotus-leaf-like superhydrophobic surfaces are of great importance for various potential applications. Micro craters in hexagonal matrix with nano substructures are effectively fabricated on mold steel (H13) with an area of 25 mm×25 mm by means of a high-power picosecond laser in cooperated with a high-speed galvo scanner. This kind of micro-nano structured H13 surface is used as a micro-nano imprinting master for replicating superhydrophobic silicone rubber surfaces under 165 ℃, 6 MPa in ambient air. Micro protuberances decorated by nano substructures, similar to those of lotus leaf, are formed onto the printed surfaces of silicone rubber, transforming the rubber surfaces to be superhydrophobic with a contact angle of 153.3° and a contact angle hysteresis of 3.2°. The picosecond laser fabricated micro-nano template is capable for repeated imprinting with good durability.
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Lin Cheng, Zhong Minlin, Fan Peixun, Long Jiangyou, Gong Dingwei, Zhang Hongjun. Picosecond Laser Fabrication of Large-Area Surface Micro-Nano Lotus-Leaf Structures and Replication of Superhydrophobic Silicone Rubber Surfaces[J]. Chinese Journal of Lasers, 2014, 41(9): 903007
Category: laser manufacturing
Received: Mar. 17, 2014
Accepted: --
Published Online: Aug. 15, 2014
The Author Email: Cheng Lin (hellolincheng@hotmail.com)