Mechanically durable liquid-impregnated honeycomb surfaces

Abstract Liquid repellent surfaces typically work by keeping the fouling liquid in a metastable state, with trapped pockets of air between the substrate and the liquid. An alternative method with greater long-term stability utilizes liquid-impregnated surfaces, where the liquid being repelled slides...

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Autores principales:	Philip S. Brown, Bharat Bhushan
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/6e296b96a6624eca8e0b24985335d0f7
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spelling	oai:doaj.org-article:6e296b96a6624eca8e0b24985335d0f72021-12-02T16:07:00ZMechanically durable liquid-impregnated honeycomb surfaces10.1038/s41598-017-06621-12045-2322https://doaj.org/article/6e296b96a6624eca8e0b24985335d0f72017-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-06621-1https://doaj.org/toc/2045-2322Abstract Liquid repellent surfaces typically work by keeping the fouling liquid in a metastable state, with trapped pockets of air between the substrate and the liquid. An alternative method with greater long-term stability utilizes liquid-impregnated surfaces, where the liquid being repelled slides over an immiscible liquid immobilized on a porous surface. Here, we report a method for creating honeycomb surfaces amenable to liquid-impregnation. Polystyrene dissolved in a water-immiscible, volatile solvent was deposited in a humid environment on a variety of substrates to achieve the necessary porosity. Evaporative cooling results in condensation of water in a breath figure array of droplets, forming a sacrificial template for the drying polymer film. These honeycomb surfaces were further functionalized with fluorosilane and dipped in the lubricating liquid to result in a durable, liquid-repellent surface. These surfaces were found to exhibit repellency towards water and oils with extremely low tilt angles due to the smooth liquid–liquid contact between the lubricating liquid and the liquid being repelled.Philip S. BrownBharat BhushanNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-6 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Philip S. Brown Bharat Bhushan Mechanically durable liquid-impregnated honeycomb surfaces
description	Abstract Liquid repellent surfaces typically work by keeping the fouling liquid in a metastable state, with trapped pockets of air between the substrate and the liquid. An alternative method with greater long-term stability utilizes liquid-impregnated surfaces, where the liquid being repelled slides over an immiscible liquid immobilized on a porous surface. Here, we report a method for creating honeycomb surfaces amenable to liquid-impregnation. Polystyrene dissolved in a water-immiscible, volatile solvent was deposited in a humid environment on a variety of substrates to achieve the necessary porosity. Evaporative cooling results in condensation of water in a breath figure array of droplets, forming a sacrificial template for the drying polymer film. These honeycomb surfaces were further functionalized with fluorosilane and dipped in the lubricating liquid to result in a durable, liquid-repellent surface. These surfaces were found to exhibit repellency towards water and oils with extremely low tilt angles due to the smooth liquid–liquid contact between the lubricating liquid and the liquid being repelled.
format	article
author	Philip S. Brown Bharat Bhushan
author_facet	Philip S. Brown Bharat Bhushan
author_sort	Philip S. Brown
title	Mechanically durable liquid-impregnated honeycomb surfaces
title_short	Mechanically durable liquid-impregnated honeycomb surfaces
title_full	Mechanically durable liquid-impregnated honeycomb surfaces
title_fullStr	Mechanically durable liquid-impregnated honeycomb surfaces
title_full_unstemmed	Mechanically durable liquid-impregnated honeycomb surfaces
title_sort	mechanically durable liquid-impregnated honeycomb surfaces
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/6e296b96a6624eca8e0b24985335d0f7
work_keys_str_mv	AT philipsbrown mechanicallydurableliquidimpregnatedhoneycombsurfaces AT bharatbhushan mechanicallydurableliquidimpregnatedhoneycombsurfaces
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Mechanically durable liquid-impregnated honeycomb surfaces

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