Applications of Bio‐Inspired Special Wettable Surfaces

Yao, Xi; Song, Yanlin; Jiang, Lei

doi:10.1002/adma.201002689

Cited by 993 publications

(662 citation statements)

References 159 publications

(209 reference statements)

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“…[46] In the past two decades, there have been great breakthroughs in research into bionic superwettable surfaces, leading to promising solutions to issues arising in daily life and industry. [15][16][17][18][19][47][48][49] Herein, we show biological inspirations that guide the design and creation of CMDSP surfaces that own the remarkable self-removal ability of small-scale condensate microdrops. Gao et al [5] first reported that closely packed nanocones on the surface of mosquito eyes are fully nonsticky to condensed microdrops (Figure 1c-e), showing a dry-style antifogging function.…”

Section: Biological Prototypes Of Cmdsp Surfacesmentioning

confidence: 98%

“…Efforts in the past decades have explored controllable fabrication, functionality, and performance optimization of bionic superhydrophobic surfaces with a contact angle above 150°, and they have resulted in technological innovations such as self-cleaning, drag-reduction, anticorrosion, antifogging, antifreezing and oil-water separation. [15][16][17][18][19] Recently, intensive www.advmat.de www.advancedsciencenews.com demonstration of their technological potential for enhancement of heat transfer, [20][21][22][23][24][25] energy saving, [26][27][28] and electrostatic energy harvesting. [29] Currently, this multidisciplinary research direction, which includes biology, chemistry, physics, materials science, and engineering, is still in its infancy, but it has exhibited significance and vigor in both fundamental and technological aspects.…”

Section: Introductionmentioning

confidence: 99%

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Recent Progress in Bionic Condensate Microdrop Self‐Propelling Surfaces

2017

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interest has focused on utilizing the lowadhesivity nature of superhydrophobic surfaces for the rapid removal of condensate microdrops, as this has significance in fundamental research and technological innovation. Example applications are the enhancement of condensation heat transfer for high-efficiency thermal management and energy utilization, [20][21][22][23][24][25] energy-effective antifreezing for airconditioner heat exchangers and aircraft wings, [26][27][28] and electrostatic energy harvesting. [29] In general, condensate drops on typical flat hydrophobic surfaces are only shed off under gravity when their sizes are comparable to the capillary length (≈2.7 mm for water), [30] which creates undesirable effects such as large thermal resistance [20][21][22][23][24][25] and the freezing of subcooled drops. [26][27][28] Clearly, a great challenge is the timely removal of condensate drops at the microscale where the gravitational effect does not work. The latest research has indicated that these small-scale condensate microdrops may self-remove via mutual coalescence as long as the coalescence-released excess surface energy is larger than the interface adhesion-induced energy dissipation. [31] Much effort has been devoted to exploring the utilization of knowledge of bionic low-adhesivity superhydrophobicity to develop innovative condensate microdrop self-propelling (CMDSP) surfaces. Different from traditional superhydrophobic surfaces, which are characterized by the bouncing or rolling off of deposited millimeter-size large drops, [32,33] CMDSP surfaces support the self-removal capability of smallscale condensate microdrops. It has been reported that classical superhydrophobic lotus leaves (Figure 1a), [34][35][36][37] as well as artificial surfaces consisting of hierarchical micro-and nanostructures, [38] one-tier microstructures, [39][40][41][42][43] or nanostructures [44,45] with larger characteristic interspaces, present a low-adhesivity property to the deposited water macrodrops, but become highly adhesive to condensed microdrops (Figure 1b). This is because moisture easily penetrates the microscale valleys or cavities. Clearly, superhydrophobic surfaces with irrationally designed surface structures can enhance the solid-liquid interfacial adhesion instead of promoting the rapid removal of condensed drops. Accordingly, it is still a challenge to design and fabricate very effective low-adhesivity superhydrophobic surfaces with the self-removal ability of condensate microdrops. Recently, there has been a large breakthrough in understanding the mechanism and construction rules of bionic CMDSP surfaces, leading to the exploration of fabrication methods for the surface functionalization of widely used metal materials and the Bionic condensate microdrop self-propelling (CMDSP) surfaces are attracting increased attention as novel, low-adhesivity superhydrophobic surfaces due to their value in fundamental research and technological innovation, e.g., for enhancing heat transfer, energy-effective antifreezing, and...

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Section: Biological Prototypes Of Cmdsp Surfacesmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Recent Progress in Bionic Condensate Microdrop Self‐Propelling Surfaces

2017

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“…30 The oxidation and corrosion of metals and their alloys in the humid atmosphere limit their applications, causing serious problems such as accelerated aging of the devices, huge waste, and environmental contamination. 79 Surface superamphiphobic modification is a probable solution to these problems because the 35 super-repellent coating acts as durable barrier film that can effectively prevent the metal surface from being corroded. Recently, a superamphiphobic CaLi-based bulk metallic galss, 41 which was prepared by the construction of micro/nanoscale hierarchical structures and subsequent fluorination, was reported 40 to show long-term stable anti-corrode ability due to its durable superamphiphobicity that can be kept in ambient atmospheric conditions for more than three months.…”

Section: Anti-freezingmentioning

confidence: 99%

Superamphiphobic surfaces

2014

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Superamphiphobicity is an effect where surface roughness and surface chemistry combine to generate surfaces which are both superhydrophobic and superoleophobic, i.e., contact angles (yCA) greater than 1501 along with low contact angle hysteresis (CAH) not only towards probing water but also for low-surface-tension 'oils'. In this review, we summarize the research on superamphiphobic surfaces, including the characterization of superamphiphobicity, different techniques towards the fabrication of surface roughness and surface modification with low-surface-energy materials as well as their functional applications. Superamphiphobicity is an effect where surface roughness and surface chemistry combine to generate 5 surfaces which are both superhydrophobic and superoleophobic, i.e., contact angles ( CA ) greater than 150° along with low contact angle hysteresis (CAH) not only towards probing water but also for lowsurface-tension 'oils'. In this tutorial review, we summarize the research on superamphiphobic surfaces, including the characterization of superamphiphobicity, different techniques towards the fabrication of surface roughness and surface modification with low-surface-energy materials as well as their functional 10 applications.

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“…3,[8][9][10][11][12][13][14][15][16][17][18][19][20] The roughness shape and size can vary widely from ordered pillars to chaotic roughness, from particles to fibers, and from materials such as metals to inorganic and organic compounds. Owing to the number of reviews recently published, this one will be confined to polymeric surfaces and some of the unique properties offered by them.…”

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confidence: 99%

The superhydrophobicity of polymer surfaces: Recent developments

Shirtcliffe

McHale

Newton

2011

J Polym Sci B Polym Phys

161

108

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Superhydrophobicity is the extreme water repellence of highly textured surfaces. The field of superhydrophobicity research has reached a stage where huge numbers of candidate treatments have been proposed and jumps have been made in theoretically describing them. There now seems to be a move to more practical concerns and to considering the demands of individual applications instead of more general cases. With these developments, polymeric surfaces with their huge variety of properties have come to the fore and are fast becoming the material of choice for designing, developing, and producing superhydrophobic surfaces.

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Applications of Bio‐Inspired Special Wettable Surfaces

Cited by 993 publications

References 159 publications

Recent Progress in Bionic Condensate Microdrop Self‐Propelling Surfaces

Recent Progress in Bionic Condensate Microdrop Self‐Propelling Surfaces

Superamphiphobic surfaces

The superhydrophobicity of polymer surfaces: Recent developments

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