TY - JOUR
T1 - Nature-inspired reentrant surfaces
AU - Li, Jiaqian
AU - Han, Xing
AU - Li, Wei
AU - Yang, Ling
AU - Li, Xing
AU - Wang, Liqiu
N1 - Funding Information:
The financial support from the Research Grants Council, University Grants Committee of Hong Kong (GRF 17205421, 17204420, 17210319, 17204718, and CRF C1006-20WF) is gratefully acknowledged. This work is also supported by the Qilu Youth Scholar Funding of Shandong University (31380082263065).
Publisher Copyright:
© 2022 Elsevier Ltd
PY - 2023/3
Y1 - 2023/3
N2 - Reentrant feature widely exists in natural structures ranging from mushroom, overhang, undercut, trapezoid, sphere, spatula and taper to sharp edge, and has triggered a biomimetic design revolution of functional surfaces for extreme repellency to fluid foulants, directional fluid navigation, and strong adaptive adhesion. In this Review, we discuss how the bionic introduction of reentrant feature on a surface mediates fluid wetting, contact line motion, as well as solid adhesion. We briefly introduce nature-inspired design principles from representative reentrant surfaces on the springtail, gecko, and pitcher plant. Through quantitatively associating microscopic structural parameters of reentrant feature, including angle, shape, diameter, thickness, sharpness and anisotropy, with macroscopically visible wetting and adhesion properties, we evaluate how the design of reentrant feature can enable exceptional superomniphobicity, strong adaptive adhesion, and directional fluidic navigation, promising an effective guidance for the creation of superomniphobic surface, fluid-navigation surface, adhesive surface or their combinations. The realization of the reentrant surfaces benefits from the rapid development of cutting-edge manufacturing technologies, such as 3D printing, lithography, microfluidics, self-assembly, and template-assisted soft replication. We finally provide potential applications of reentrant surfaces, as well as scientific and technological challenges and opportunities.
AB - Reentrant feature widely exists in natural structures ranging from mushroom, overhang, undercut, trapezoid, sphere, spatula and taper to sharp edge, and has triggered a biomimetic design revolution of functional surfaces for extreme repellency to fluid foulants, directional fluid navigation, and strong adaptive adhesion. In this Review, we discuss how the bionic introduction of reentrant feature on a surface mediates fluid wetting, contact line motion, as well as solid adhesion. We briefly introduce nature-inspired design principles from representative reentrant surfaces on the springtail, gecko, and pitcher plant. Through quantitatively associating microscopic structural parameters of reentrant feature, including angle, shape, diameter, thickness, sharpness and anisotropy, with macroscopically visible wetting and adhesion properties, we evaluate how the design of reentrant feature can enable exceptional superomniphobicity, strong adaptive adhesion, and directional fluidic navigation, promising an effective guidance for the creation of superomniphobic surface, fluid-navigation surface, adhesive surface or their combinations. The realization of the reentrant surfaces benefits from the rapid development of cutting-edge manufacturing technologies, such as 3D printing, lithography, microfluidics, self-assembly, and template-assisted soft replication. We finally provide potential applications of reentrant surfaces, as well as scientific and technological challenges and opportunities.
KW - Adhesive surface
KW - Bioinspired surface
KW - Fluid navigation
KW - Mushroom structure
KW - Reentrant structure
KW - Superomniphobic surface
UR - http://www.scopus.com/inward/record.url?scp=85144825431&partnerID=8YFLogxK
U2 - 10.1016/j.pmatsci.2022.101064
DO - 10.1016/j.pmatsci.2022.101064
M3 - Review article
AN - SCOPUS:85144825431
SN - 0079-6425
VL - 133
JO - Progress in Materials Science
JF - Progress in Materials Science
M1 - 101064
ER -