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Title: Femtosecond laser produced hydrophobic hierarchical structures on additive manufacturing parts
Authors: Jiao, Lishi
Song, Jie
Bi, Guijun
Zheng, Hongyu
Chua, Zhong Yang
Moon, Seung Ki
Keywords: Hydrophobic Surface
Additive Manufacturing
DRNTU::Engineering::Mechanical engineering
Issue Date: 2018
Source: Jiao, L., Chua, Z. Y., Moon, S. K., Song, J., Bi, G., & Zheng, H. (2018). Femtosecond laser produced hydrophobic hierarchical structures on additive manufacturing parts. Nanomaterials, 8(8), 601-. doi:10.3390/nano8080601
Series/Report no.: Nanomaterials
Abstract: With the recent expansion of additive manufacturing (AM) in industries, there is an intense need to improve the surface quality of AM parts. A functional surface with extreme wettability would explore the application of AM in medical implants and microfluid. In this research, we propose to superimpose the femtosecond (fs) laser induced period surface structures (LIPSS) in the nanoscale onto AM part surfaces with the micro structures that are fabricated in the AM process. A hierarchical structure that has a similar morphology to a lotus leaf surface is obtained by combining the advantages of liquid assisting fs laser processing and AM. A water contact angle (WCA) of 150° is suggested so that a super hydrophobic surface is achieved. The scanning electron microscopy (SEM) images and X-ray photoelectron spectroscopy (XPS) analysis indicate that both hierarchical structures and higher carbon content in the laser processed area are responsible for the super hydrophobicity.
ISSN: 2079-4991
DOI: 10.3390/nano8080601
Rights: © 2018 by The Author(s). Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:MAE Journal Articles

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