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Micromachines
Volume 12
Issue 5
10.3390/mi12050547
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Article

Tunable Wettability Pattern Transfer Photothermally Achieved on Zinc with Microholes Fabricated by Femtosecond Laser

by
Fengping Li
1,2,*,
Guang Feng
2,
Xiaojun Yang
3,
Chengji Lu
2,
Guang Ma
2,
Xiaogang Li
2,
Wei Xue
2 and
Haoran Sun
2
1
School of Aerospace Engineering, Xiamen University, Xiamen 361005, China
2
Zhejiang Provincial Engineering Lab of Laser and Optoelectronic Intelligent Manufacturing, Wenzhou University, Wenzhou 325035, China
3
Xi’an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi’an 710119, China
*
Author to whom correspondence should be addressed.
Micromachines 2021, 12(5), 547; https://doi.org/10.3390/mi12050547
Submission received: 13 April 2021 / Revised: 29 April 2021 / Accepted: 6 May 2021 / Published: 11 May 2021
(This article belongs to the Section D: Materials and Processing)
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Abstract

A quickly tunable wettability pattern plays an important role in regulating the surface behavior of liquids. Light irradiation can effectively control the pattern to achieve a specific wettability pattern on the photoresponsive material. However, metal oxide materials based on light adjustable wettability have a low regulation efficiency. In this paper, zinc (Zn) superhydrophobic surfaces can be obtained by femtosecond-laser-ablated microholes. Owing to ultraviolet (UV) irradiation increasing the surface energy of Zn and heating water temperature decreasing the surface energy of water, the wettability of Zn can be quickly tuned photothermally. Then, the Zn superhydrophobic surfaces can be restored by heating in the dark. Moreover, by tuning the pattern of UV irradiation, a specific wettability pattern can be transferred by the Zn microholes, which has a potential application value in the field of new location-controlled micro-/nanofluidic devices, such as microreactors and lab-on-chip devices.
Keywords: tunable wettability; wettability pattern; femtosecond laser tunable wettability; wettability pattern; femtosecond laser

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MDPI and ACS Style

Li, F.; Feng, G.; Yang, X.; Lu, C.; Ma, G.; Li, X.; Xue, W.; Sun, H. Tunable Wettability Pattern Transfer Photothermally Achieved on Zinc with Microholes Fabricated by Femtosecond Laser. Micromachines 2021, 12, 547. https://doi.org/10.3390/mi12050547

AMA Style

Li F, Feng G, Yang X, Lu C, Ma G, Li X, Xue W, Sun H. Tunable Wettability Pattern Transfer Photothermally Achieved on Zinc with Microholes Fabricated by Femtosecond Laser. Micromachines. 2021; 12(5):547. https://doi.org/10.3390/mi12050547

Chicago/Turabian Style

Li, Fengping, Guang Feng, Xiaojun Yang, Chengji Lu, Guang Ma, Xiaogang Li, Wei Xue, and Haoran Sun. 2021. "Tunable Wettability Pattern Transfer Photothermally Achieved on Zinc with Microholes Fabricated by Femtosecond Laser" Micromachines 12, no. 5: 547. https://doi.org/10.3390/mi12050547

APA Style

Li, F., Feng, G., Yang, X., Lu, C., Ma, G., Li, X., Xue, W., & Sun, H. (2021). Tunable Wettability Pattern Transfer Photothermally Achieved on Zinc with Microholes Fabricated by Femtosecond Laser. Micromachines, 12(5), 547. https://doi.org/10.3390/mi12050547

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