Bioinspired transparent underwater superoleophobic and anti-oil surfaces

Yong, Jiale; Yang, Qing; Du, Guangqing; Shan, Chao; Bian, Hao; Farooq, Umar; Hou, Xun

doi:10.1039/c5ta01104c

Cited by 103 publications

(114 citation statements)

References 40 publications

(48 reference statements)

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“…[1][2][3] It is reported that the fish scales consist of superhydrophilic micropapillae covered with nanostructures, exhibiting superhydrophilicity in air. [1,4] Inspired by fish scales, many kinds of underwater superoleophobic and low-adhesive interfaces have been fabricated with diverse technologies to boost their applications in self-cleaning coatings, fluidic devices, oil-water separation, bioadhesion, oil-droplet manipulation and so on. [1,4] Inspired by fish scales, many kinds of underwater superoleophobic and low-adhesive interfaces have been fabricated with diverse technologies to boost their applications in self-cleaning coatings, fluidic devices, oil-water separation, bioadhesion, oil-droplet manipulation and so on.…”

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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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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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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136

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“…2A) to form a 48 × 48 array (height h = 120 μm, space Λ = 77 μm), each unit with precisely controlled parabolic sidewalls on glass. To reduce the scattering loss on the laser-ablated surface (19), the sidewalls are smoothened by reflowing a thin layer (a few micrometers in thickness) of sprayed-on Su-8 photoresist (Fig. 2B).…”

Section: Significancementioning

confidence: 99%

Artificial eye for scotopic vision with bioinspired all-optical photosensitivity enhancer

Liu

Huang

Jiang

2016

Proc. Natl. Acad. Sci. U.S.A.

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The ability to acquire images under low-light conditions is critical for many applications. However, to date, strategies toward improving low-light imaging primarily focus on developing electronic image sensors. Inspired by natural scotopic visual systems, we adopt an alloptical method to significantly improve the overall photosensitivity of imaging systems. Such optical approach is independent of, and can effectively circumvent the physical and material limitations of, the electronics imagers used. We demonstrate an artificial eye inspired by superposition compound eyes and the retinal structure of elephantnose fish. The bioinspired photosensitivity enhancer (BPE) that we have developed enhances the image intensity without consuming power, which is achieved by three-dimensional, omnidirectionally aligned microphotocollectors with parabolic reflective sidewalls. Our work opens up a previously unidentified direction toward achieving high photosensitivity in imaging systems.bioinspired optical devices | low-light imaging | microopto-electromechanical systems | femtosecond laser micromachining | low aberrations

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Bioinspired transparent underwater superoleophobic and anti-oil surfaces

Abstract: A bioinspired method to realize transparent underwater superoleophobic and anti-oil surfaces by a femtosecond laser treatment.

Cited by 103 publications

References 40 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

Artificial eye for scotopic vision with bioinspired all-optical photosensitivity enhancer

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