Journal ArticleDOI
Nepenthes Pitcher Inspired Anti-Wetting Silicone Nanofilaments Coatings: Preparation, Unique Anti-Wetting and Self-Cleaning Behaviors
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TLDR
In this paper, a combination of fluoro-silicone nanofilaments (fluoro-SNs) and Krytox liquids, perfluoropolyethers, is successfully fabricated by the combination of Fluoro-Siamese Nanofilament (FLN) and krytox liquid via capillary effect.Abstract:
Nepenthes pitcher inspired anti-wetting coatings, fluoro-SNs/Krytox, are successfully fabricated by the combination of fluoro-silicone nanofilaments (fluoro-SNs) and Krytox liquids, perfluoropolyethers. Fluoro-SNs with different microstructure are grown onto glass slides using trichloromethylsilane by simply repeating the coating step, and then modified with 1H,1H,2H,2H-perfluorodecyltrichlorosilane. Subsequently, the Krytox liquid is spread on the fluoro-SNs coatings via capillary effect. The fluoro-SNs/Krytox coatings feature ultra-low sliding angle for various liquids, excellent stability, and transparency. The sliding speed of liquid drops on the fluoro-SNs/Krytox coating is obviously slower than on the lotus inspired superhydrophobic and superoleophobic coatings, and is controlled by composition of the coating (e.g., morphology of the fluoro-SNs, type of Krytox and its thickness) and properties of the liquid drops (e.g., density and surface tension). In addition, the self-cleaning property of the fluoro-SNs/Krytox coating is closely related to properties of liquid drops and dirt.read more
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Journal ArticleDOI
Slippery shape memory polymer arrays with switchable isotropy/anisotropy and its application as a reprogrammable platform for controllable droplet motion
TL;DR: In this article, a new slippery surface is prepared by infusing lubricant into the shape memory polymer arrays, which enables the surface microstructure to reversibly transit between the random state and 1D ordered state, accordingly, smart switchable isotropic/anisotropic sliding can be displayed.
Journal ArticleDOI
A SuperLEphilic/Superhydrophobic and Thermostable Separator Based on Silicone Nanofilaments for Li Metal Batteries
TL;DR: A design idea of superLEphilic/superhydrophobic and thermostable separators by modifying the Celgard separator using silicone nanofilaments is reported, which could improve performance of the other Li metal batteries with high-voltage cathodes and the LiFePO4/graphite pouch cells.
Journal ArticleDOI
Facile fabrication of highly omniphobic and self-cleaning surfaces based on water mediated fluorinated nanosilica aggregation
TL;DR: In this article, a facile and effective sol-gel method for fabricating hybrid coatings with highly omniphobic and self-cleaning properties was reported, which can be easily coated on various hard and soft substrates by spraying or dipping methods, endowing the substrate with omniphobicity to different organic liquids and biofoulings especially solidified egg white.
Journal ArticleDOI
Fabrication of a superhydrophobic and oleophobic PTFE membrane: An application to selective gas permeation
TL;DR: In this paper, a superhydrophobic and oleophobic film was fabricated on polytetrafluoroethylene (PTFE) using SiO 2 nanoparticles and 1H, 1H, 2H, 2H -perfluorooctyltrichlorosilane (FOTS) to repel water and hexadecane droplets.
Journal ArticleDOI
Laminar Drag Reduction in Microchannels with Liquid Infused Textured Surfaces
Karunesh Kant,Ranga Pitchumani +1 more
TL;DR: In this article, the effect of liquid-infused texture geometry and the infused liquid properties on the flow characteristics of a bulk fluid in rectangular and round microchannel geometries is investigated.
References
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Journal ArticleDOI
Purity of the sacred lotus, or escape from contamination in biological surfaces
TL;DR: It is shown here for the first time that the interdependence between surface roughness, reduced particle adhesion and water repellency is the keystone in the self-cleaning mechanism of many biological surfaces.
Journal ArticleDOI
Bioinspired self-repairing slippery surfaces with pressure-stable omniphobicity
Tak Sing Wong,Sung Hoon Kang,Sindy K. Y. Tang,Elizabeth Smythe,Benjamin Hatton,Alison Grinthal,Joanna Aizenberg +6 more
TL;DR: A strategy to create self-healing, slippery liquid-infused porous surface(s) (SLIPS) with exceptional liquid- and ice-repellency, pressure stability and enhanced optical transparency, applicable to various inexpensive, low-surface-energy structured materials (such as porous Teflon membrane).
Journal ArticleDOI
Designing Superoleophobic Surfaces
Anish Tuteja,Wonjae Choi,Minglin Ma,Joseph M. Mabry,Sarah A. Mazzella,Gregory C. Rutledge,Gareth H. McKinley,Robert E. Cohen +7 more
TL;DR: It is shown how a third factor, re-entrant surface curvature, in conjunction with chemical composition and roughened texture, can be used to design surfaces that display extreme resistance to wetting from a number of liquids with low surface tension, including alkanes such as decane and octane.
Journal ArticleDOI
Biophysics: Water-repellent legs of water striders
Xuefeng Gao,Lei Jiang +1 more
TL;DR: It is shown that it is the special hierarchical structure of the legs, which are covered by large numbers of oriented tiny hairs (microsetae) with fine nanogrooves, that is more important in inducing this water resistance.
Journal ArticleDOI
Design and Creation of Superwetting/Antiwetting Surfaces
Xinjian Feng,Lei Jiang +1 more
TL;DR: In this paper, a survey of the recent achievements in the construction of surfaces with special wettabilities, such as superhydrophobicity, super-hydrophilicity and superoleophobicity, are presented.