Continuous Directional Water Transport on Hydrophobic Slippery Ventral Skin of <i>Lampropeltis pyromelana</i>

Tenjimbayashi, Mizuki; Kawamura, Kohei; Shiratori, Seimei

doi:10.1002/admi.202000984

Cited by 8 publications

(5 citation statements)

References 51 publications

(15 reference statements)

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“…Besides the examples already mentioned, there are various other examples in nature where the effect of passive unidirectional fluid transport can be observed, e.g. the back of desert beetles [18] , spider silk [19] , butterfly wings [20] , cacti [21] , bird beaks [22] , the ventral 376 skin of the Arizona Mountain King Snake (Lampropeltis pyromelana) [23] and the peristome of pitcher plants [24][25][26][27][28] . With a look on biomimetics, the phenomenon of passive, unidirectional fluid transport is also interesting in terms of technical applications.…”

Section: Introductionmentioning

confidence: 99%

An Optimised Surface Structure for Passive, Unidirectional Fluid Transport Bioinspired by True Bugs

et al. 2021

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Some true bug species use droplet-shaped, open-capillary structures for passive, unidirectional fluid transport on their body surface in order to spread a defensive fluid to protect themselves against enemies. In this paper we investigated if the shape of the structures found on bugs (bug-structure) could be optimised with regard to better performance in unidirectional fluid transportation. Furthermore, to use this kind of surface structure in technical applications where fluid surface interaction occurs, it is necessary to adapt the structure geometry to the contact angle between fluid and surface. Based on the principal of operation of the droplet-shaped structures, we optimised the structure shape for better performance in targeted fluid flow and increase in flexibility in design of the structure geometry. To adapt the structure geometry and the structure spacing to the contact angle, we implemented an equilibrium simulation of the, the structure surrounding, fluid. In order to verify the functionality of the optimised structure, we designed and manufactured a prototype. By testing this prototype with pure water used as fluid, the functionality of the optimised structure and the simulation could be proved. This kind of structure may be used on technical surfaces where targeted fluid transport is needed, e.g. evacuation of condensate in order to prevent the surface from mold growth, microfluidics, lab-on-a-chip applications and on microneedles for efficient drug/vaccine coating.

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Section: Introductionmentioning

confidence: 99%

An Optimised Surface Structure for Passive, Unidirectional Fluid Transport Bioinspired by True Bugs

et al. 2021

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“…For the active strategies, the interfacial friction is mainly balanced by the interfacial forces, such as capillary force, gradient force of surface, gravity, and electrostatic force. Typically, common interface tension-induced | https://mc03.manuscriptcentral.com/friction capillary flow [246] could balance the fluid viscous friction and contact-line friction to achieve spontaneous liquid flows, such as water transport in plant vessels [6], slippery ventral skin of Lampropeltis pyromelana [247], and droplet uphill [248]. In addition, these actively spontaneous liquid flows are also affected by the liquid inherent characteristics, such as liquid directional steering in the Araucaria leaf structure [33] (Fig.…”

Section: Hydrodynamic Coupling-mediated Interfacesmentioning

confidence: 99%

Interfacial friction at action: Interactions, regulation, and applications

Wang

et al. 2023

Friction

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Friction is a fundamental force that impacts almost all interface-related applications. Over the past decade, there is a revival in our basic understanding and practical applications of the friction. In this review, we discuss the recent progress on solid-liquid interfacial friction from the perspective of interfaces. We first discuss the fundamentals and theoretical evolution of solid-liquid interfacial friction based on both bulk interactions and molecular interactions. Then, we summarize the interfacial friction regulation strategies manifested in both natural surfaces and artificial systems, focusing on how liquid, solid, gas, and hydrodynamic coupling actions mediate interfacial friction. Next, we discuss some practical applications that are inhibited or reinforced by interfacial friction. At last, we present the challenges to further understand and regulate interfacial friction.

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“…Lampropeltis pyrmelana (Figure 8b), whose ventral skin is evenly covered with a hydrophobic lipid layer, has a low contact angle hysteresis and periodic hierarchical wrinkles, and shows low liquid adhesion loss and a large amount of water transport capacity. [ 119 ] As water is continuously supplied to the scales, the volume of the droplets continues to increase, but the diffusion of the droplets stops at the back edge of the scales and only spread forward. The directional transmission characteristic is attributed to the coupling effect of topological reciprocation and liquid bridge effect.…”

Section: D Printing Of Bioinspired Interfacial Structures With Anisot...mentioning

confidence: 99%

Review on 3D Printing of Bioinspired Structures for Surface/Interface Applications

He,

Tang,

Zeng

et al. 2023

Adv Funct Materials

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Natural organisms have evolved a series of versatile functional biomaterials and structures to cope with survival crises in their living environment, exhibiting outstanding properties such as superhydrophobicity, anisotropy, and mechanical reinforcement, which have provided abundant inspiration for the design and fabrication of next‐generation multi‐functional devices. However, the lack of available materials and limitations of traditional manufacturing methods for complex multiscale structures have hindered the progress in bio‐inspired manufacturing of functional structures. As a revolutionary emerging manufacturing technology, additive manufacturing (i.e., 3D printing) offers high design flexibility and manufacturing freedom, providing the potential for the fabrication of intricate, multiscale, hierarchical, and multi‐material structures. Herein, a comprehensive review of current 3D printing of surface/interface structures, covering the applied materials, designs, and functional applications is provided. Several bio‐inspired surface structures that have been created using 3D printing technology are highlighted and categorized based on their specific properties and applications, some properties can be applied to multiple applications. The optimized designs of these 3D‐printed bio‐inspired surfaces offer a promising prospect of low‐cost, high efficiency, and excellent performance. Finally, challenges and opportunities in field of fabricating functional surface/interface with more versatile functional material, refined structural design, and better cost‐effective are discussed.

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Continuous Directional Water Transport on Hydrophobic Slippery Ventral Skin of Lampropeltis pyromelana

Cited by 8 publications

References 51 publications

An Optimised Surface Structure for Passive, Unidirectional Fluid Transport Bioinspired by True Bugs

An Optimised Surface Structure for Passive, Unidirectional Fluid Transport Bioinspired by True Bugs

Interfacial friction at action: Interactions, regulation, and applications

Review on 3D Printing of Bioinspired Structures for Surface/Interface Applications

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