Bio-Inspired Extreme Wetting Surfaces for Biomedical Applications

Shin, Sera; Seo, Jungmok; Han, Heetak; Kang, Sanghyeok; Kim, Hyunchul; Lee, Taeyoon

doi:10.3390/ma9020116

Cited by 118 publications

(76 citation statements)

References 176 publications

(233 reference statements)

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“…[1][2][3] The as-obtained structured surfaces with tunable adhesion enable microdroplet transportation among homogeneous surfaces (same components but with different morphologies), which can be applied widely in bio-separation, 4 chemical reactions 5 and patterning. 6 Such surfaces must possess considerable differences in adhesion.…”

Section: Introductionmentioning

confidence: 99%

Controllable domain morphology in coated poly(lactic acid) films for high-efficiency and high-precision transportation of water droplet arrays

et al. 2017

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Construction of superhydrophobic surfaces with tunable adhesion force has attracted considerable attention in past decades. Here, we demonstrated an exfoliated surface in non-solvent-coated poly(lactic acid) (PLA) films which exhibited controllable domain morphology containing "face-on", "edge-on" or "peak-on" nano-/micro-structures. A theoretical understanding revealed that such controllable morphology responded closely to the variation in mixture viscosities at a fixed temperature.Furthermore, the resulting films were highly superhydrophobic with contact angles >150. In particular, adhesion could be tuned ranging from 144 mN to 62 mN for face-on and peak-on surfaces, respectively, by changing the non-solvent content. This strategy allowed for high-efficiency and high-precision transportation of water microdroplets (1 mL) with a yield of #100% on homogeneous surfaces. This approach could aid no-mass-lost fluid transportation for a broad variety of applications in bioengineering and biochips.

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Section: Introductionmentioning

confidence: 99%

Controllable domain morphology in coated poly(lactic acid) films for high-efficiency and high-precision transportation of water droplet arrays

et al. 2017

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“…Indeed, the surface of the lotus leaf is covered by micro and nano-structures and wax which make it superhydrophobic [3][4][5][6][7]. One of the techniques used for reproducing these structures is based on photolithography.…”

Section: Introductionmentioning

confidence: 99%

Superhydrophobic Surfaces Created by Elastic Instability of PDMS

2016

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Lotus flowers, rose petals, some plant leaves and insects have a naturally super-hydrophobic surface. In fact, the surface of a Lotus leaf is covered by micro and nano structures mixed with wax, which makes its surface superhydrophobic. In microfluidics, superhydrophobicity is an important factor in the rheometers on a chip. It is also sought in other complex fluids applications like the self-cleaning and the antibacterial materials. The wettability of the surface of solid support can be modified by altering its chemical composition. This means functionalizing the interface molecules to different chemical properties, and/or forming a thin film on the surface. We can also influence its texturing by changing its roughness. Despite considerable efforts during the last decade, superhydrophobic surfaces usually involve, among others, microfabrication processes, such as photolithography technique. In this study, we propose an original and simple method to create superhydrophobic surfaces by controlling elastic instability of poly-dimethylsiloxane (PDMS) films. Indeed, we demonstrate that the self-organization of wrinkles on top of non-wettable polymer surfaces leads to surperhydrophobic surfaces with contact angles exceeding 150˝. We studied the transition Wenzel-Cassie, which indicated that the passage of morphology drops "impaled" to a type of morphology "fakir" were the strongest topographies.

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“…Wettability patterned surfaces enable the isolation of cell-laden biomaterials onto the hydrophilic region surrounded by hydrophobic borders, resulting in the formation of biomaterial arrays [36, 351–356]. Wettability patterning can potentially be used for screening 3D cellular behaviors in spatially engineered hydrogels.…”

Section: Future Perspectivesmentioning

confidence: 99%

Spatially and temporally controlled hydrogels for tissue engineering

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Seo

Yue

et al. 2017

Materials Science and Engineering: R: Reports

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Summary Recent years have seen tremendous advances in the field of hydrogel-based biomaterials. One of the most prominent revolutions in this field has been the integration of elements or techniques that enable spatial and temporal control over hydrogels’ properties and functions. Here, we critically review the emerging progress of spatiotemporal control over biomaterial properties towards the development of functional engineered tissue constructs. Specifically, we will highlight the main advances in the spatial control of biomaterials, such as surface modification, microfabrication, photo-patterning, and three-dimensional (3D) bioprinting, as well as advances in the temporal control of biomaterials, such as controlled release of molecules, photocleaving of proteins, and controlled hydrogel degradation. We believe that the development and integration of these techniques will drive the engineering of next-generation engineered tissues.

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Bio-Inspired Extreme Wetting Surfaces for Biomedical Applications

Cited by 118 publications

References 176 publications

Controllable domain morphology in coated poly(lactic acid) films for high-efficiency and high-precision transportation of water droplet arrays

Controllable domain morphology in coated poly(lactic acid) films for high-efficiency and high-precision transportation of water droplet arrays

Superhydrophobic Surfaces Created by Elastic Instability of PDMS

Spatially and temporally controlled hydrogels for tissue engineering

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