Controllable underwater anisotropic oil-wetting

Jiale Yong; Feng Chen; Qing Yang; Umar Farooq; Hao Bian; Guangqing Du; Xun Hou

doi:10.1063/1.4893945

Controllable underwater anisotropic oil-wetting

Jiale Yong
, Feng Chen
, Qing Yang
, Umar Farooq
, Hao Bian
, Guangqing Du
, Xun Hou

Faculty of Electronic and Information Engineering

Xi'an Jiaotong University

Research output: Contribution to journal › Article › peer-review

23 Scopus citations

Abstract

This Letter demonstrates a simple method to achieve underwater anisotropic oil-wetting using silicon surfaces with a microgroove array produced by femtosecond laser ablation. The oil contact angles along the direction perpendicular to the grooves are consistently larger than those parallel to the microgroove arrays in water because the oil droplet is restricted by the energy barrier that exists between the non-irradiated domain and the trapped water in the laser-ablated microgrooves. This underwater anisotropic oil-wetting is able to be controlled, and the anisotropy can be tuned from 0° to ∼20° by adjusting the period of the microgroove arrays.

Original language	English
Article number	071608
Journal	Applied Physics Letters
Volume	105
Issue number	7
DOIs	https://doi.org/10.1063/1.4893945
State	Published - 18 Aug 2014

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10.1063/1.4893945

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abstract = "This Letter demonstrates a simple method to achieve underwater anisotropic oil-wetting using silicon surfaces with a microgroove array produced by femtosecond laser ablation. The oil contact angles along the direction perpendicular to the grooves are consistently larger than those parallel to the microgroove arrays in water because the oil droplet is restricted by the energy barrier that exists between the non-irradiated domain and the trapped water in the laser-ablated microgrooves. This underwater anisotropic oil-wetting is able to be controlled, and the anisotropy can be tuned from 0° to ∼20° by adjusting the period of the microgroove arrays.",

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AU - Yong, Jiale

AU - Chen, Feng

AU - Yang, Qing

AU - Farooq, Umar

AU - Bian, Hao

AU - Du, Guangqing

AU - Hou, Xun

PY - 2014/8/18

Y1 - 2014/8/18

N2 - This Letter demonstrates a simple method to achieve underwater anisotropic oil-wetting using silicon surfaces with a microgroove array produced by femtosecond laser ablation. The oil contact angles along the direction perpendicular to the grooves are consistently larger than those parallel to the microgroove arrays in water because the oil droplet is restricted by the energy barrier that exists between the non-irradiated domain and the trapped water in the laser-ablated microgrooves. This underwater anisotropic oil-wetting is able to be controlled, and the anisotropy can be tuned from 0° to ∼20° by adjusting the period of the microgroove arrays.

AB - This Letter demonstrates a simple method to achieve underwater anisotropic oil-wetting using silicon surfaces with a microgroove array produced by femtosecond laser ablation. The oil contact angles along the direction perpendicular to the grooves are consistently larger than those parallel to the microgroove arrays in water because the oil droplet is restricted by the energy barrier that exists between the non-irradiated domain and the trapped water in the laser-ablated microgrooves. This underwater anisotropic oil-wetting is able to be controlled, and the anisotropy can be tuned from 0° to ∼20° by adjusting the period of the microgroove arrays.

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SN - 0003-6951

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JO - Applied Physics Letters

JF - Applied Physics Letters

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Controllable underwater anisotropic oil-wetting

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