Photoinduced switchable underwater superoleophobicity–superoleophilicity on laser modified titanium surfaces

Yong, Jiale; Chen, Feng; Yang, Qing; Farooq, Umar; Hou, Xun

doi:10.1039/c5ta01782c

Cited by 128 publications

(123 citation statements)

References 49 publications

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“…[4,5,[16][17][18] It is a onestep and fast method without mask and harsh environment. [4,5,[16][17][18] It is a onestep and fast method without mask and harsh environment.…”

Section: Introductionmentioning

confidence: 99%

“…[4,5,[16][17][18] It is a onestep and fast method without mask and harsh environment. [17] For exemple, Chen et al [16,18] have put forward an effective method for -4 -repetition rate of 1 kHz with a central wavelength of 800 nm is employed for irradiation. [17] For exemple, Chen et al [16,18] have put forward an effective method for -4 -repetition rate of 1 kHz with a central wavelength of 800 nm is employed for irradiation.…”

Section: Introductionmentioning

confidence: 99%

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Fish scale inspired design of underwater superoleophobic microcone arrays by sucrose solution assisted femtosecond laser irradiation for multifunctional liquid manipulation

Lü

et al. 2015

J. Mater. Chem. A

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The preparation of superhydrophilic/superoleophilic/underwater superoleophobic surfaces is inspired by natural surfaces such as fish scales possessing hierarchical micro/nanostructures.In this paper, we report the assembly of self-organized hierarchical microcones arrays on nickel surface by sucrose solution-assisted femtosecond laser irradiation. The processed surface is superhydrophilic (13.47 o~4 .01 o ), superoleophilic (7.45 o~3 .73 o ), and underwater superoleophobic (135.22 o~1 66.16 o ), which are comparable to that of the fish scales. The wettabilities of the processed surfaces are tunable by adjusting the mass ratio of the sucrose to water and pulse energy to control the height (1.62~10.34 µm) and size (2.1~2.81 µm) of the microcones. Multifunctional liquid manipulation such as microdroplet transferring, static and dynamic storage, liquid transportation and mixing are demonstrated. Our proposed method features rapidness, simplicity and easiness of large-area fabrication, which may find broader applications in many fields such as microfluidic devices, fluid microreactors, biomedicine, biomedical scaffold, and chemical-biological sensors.-3 -preparing underwater superoleophobic surfaces by femtosecond laser microfabrication on Ti materials. As a kind of important ferromagnetic metal, nickel shows outstanding optical, catalytic, electrical, and superior resistant characteristics to corrosion, which makes it widely applicable in electronics, [19] nickel-batteries, [20] alloy, [21] and chemical catalyst. [22] However, the present fabrication on nickel material using femtosecond laser microfabrication and studying the underwater superoleophobicity are still few. Therefore, it is of great interests to produce underwater superoleophobic surfaces on nickel substrates, and study their functions and potential applications.Here, we demonstrate a facile and rapid method to fabricate large-area microcones arrays by one-step femtosecond laser irradiation on nickel targets in sucrose solutions. The prepared surfaces are superhydrophilic in air and superoleophobic in water. It is indicated that the height and size are tunable by controlling the ratio of the sucrose to the water in the solution and the laser pulse energy, leading to controllable wettabilities for water and oil. Furthermore, these processed surfaces covered with microcones arrays exhibit multiple functions, which can be used in microfluidic devices, fluid microreactors, biomedicine, biomedical scaffold, chemical, and biological sensors. Experimental SectionMaterials: Nickel sheets with a purity of 99.99% were purchased from New Metal Material Tech. Co., Ltd., Beijing, China. The oil used in our experiment is 1, 2dichloroethane, and the chemical formula was C 2 H 4 Cl 2 . The sucrose (chemical formula is C 12 H 22 O 11 and the relative molecular mass is 342.3), milk (the color is white) and the red ink are purchased from supermarket. The sucrose solution is prepared by dissolving sucrose with a certain mass into 100g distilled water, and the mass ratio ran...

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“…[4,5,[16][17][18] It is a onestep and fast method without mask and harsh environment. [4,5,[16][17][18] It is a onestep and fast method without mask and harsh environment.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Fish scale inspired design of underwater superoleophobic microcone arrays by sucrose solution assisted femtosecond laser irradiation for multifunctional liquid manipulation

Lü

et al. 2015

J. Mater. Chem. A

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“…[ 31 ] The characteristics of fi sh scales suggest that surfaces that are superhydrophilic in air are generally superoleophobic in water. [31][32][33][34] Deserts, which are largely uninhabitable, cover a signifi cant area of the earth's surface. In addition, deserts are encroaching on cities where we live, and often cause air pollution when sandstorms occur.…”

Section: Doi: 101002/admi201500650mentioning

confidence: 99%

“…[31][32][33][34] Sand is an intrinsically superhydrophilic material that will be fully wetted (that is, the spaces between the sand particles will be fi lled with water) when immersed in water. A water cushion will form below an oil droplet placed on a sand layer in water.…”

Section: Doi: 101002/admi201500650mentioning

confidence: 99%

Oil‐Water Separation: A Gift from the Desert

Yong

Yang

Bian

et al. 2016

Adv Materials Inter

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137

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“…Chen et al . used a femtosecond laser to fabricate a rough micro-mountain array structure and a layer of TiO 2 on a substrate of Ti32. After UV illumination of this structure, the properties of the irradiated area changed from superhydrophobic (underwater superoleophilic) to superhydrophilic (underwater superoleophobic) due to the photo-induced hydrophilicity of the TiO 2 layer.…”

mentioning

confidence: 99%

A highly efficient, stable, durable, and recyclable filter fabricated by femtosecond laser drilling of a titanium foil for oil-water separation

Cao

Wang

et al. 2016

Sci Rep

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It has been a long standing challenge to efficiently separate oil and water since prehistoric times, and now it has become even more desirable in oily wastewater purification and oil spill cleanup. Here we introduce a super oil–water separation filter with superhydrophilicity and underwater superoleophobicity, fabricated using femtosecond laser micro-hole drilling of a titanium foil. Such a simply-made filter, without any modification, can achieve a separation efficiency exceeding 99% in eight typical oil–water mixtures. It remains highly efficient after 40 cycles of recycling and after suffering erosion by corrosive media. Furthermore, the used filter, polluted with oil, could be recovered by ultraviolet illumination. The flux of filtered water is tunable by simply selecting the aperture of the microhole or the spacing between adjacent microholes. Such advanced functionality is due to roughness and the TiO2 layers on the ablated surface during fabrication. With superhydrophilic and superoleophobic surfaces, this oil-water filer is also suitable for applications in anti-fouling, anti-smudge, anti-fog, and self-cleaning.

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Photoinduced switchable underwater superoleophobicity–superoleophilicity on laser modified titanium surfaces

Abstract: A one-step way to achieve smart reversible switching between the underwater superoleophobicity and underwater superoleophilicity of femtosecond laser ablated Ti materials.

Cited by 128 publications

References 49 publications

Fish scale inspired design of underwater superoleophobic microcone arrays by sucrose solution assisted femtosecond laser irradiation for multifunctional liquid manipulation

Fish scale inspired design of underwater superoleophobic microcone arrays by sucrose solution assisted femtosecond laser irradiation for multifunctional liquid manipulation

Oil‐Water Separation: A Gift from the Desert

A highly efficient, stable, durable, and recyclable filter fabricated by femtosecond laser drilling of a titanium foil for oil-water separation

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