NDLI: Reversible superhydrophobic coatings on lifeless and biotic surfaces <i>via</i> dry-painting of aerogel microparticles

Content Provider	Royal Society of Chemistry (RSC)
Author	Zhang, Xuetong Zhang, Yulu Wang, Jin
Copyright Year	2016
Abstract	The superhydrophobicity of living bodies such as lotus leaves, butterfly wings, and water strider legs has its own physiological meaning and it is critical for the survival of these lives. Although great progress has been achieved in superhydrophobic modification on a variety of substrates, such as glass, silicon wafer, and fabric, which are all lifeless objects, it is a great challenge for the superhydrophobic modification of living creatures. In this work, strategies to fulfill the vision are proposed by synthesis of a series of biocompatible silica aerogel microparticles via a solvent-exchange-free and ambient pressure drying process. Then, dry-painting of the aerogel microparticles directly on various surfaces is developed. Interestingly, the results indicate that the silica aerogel microparticles can not only be successfully applied to various lifeless surfaces (e.g., glass, paper, and polymers), but also be used on biotic surfaces of living bodies (e.g., leaves, flowers, and skin). Moreover, these superhydrophobic coatings are mechanically stable but could be easily removed on demand by simple methods due to the non-covalent bonding between the aerogel and the substrates. Ultimately, an “invisible glove” is also demonstrated by the fact that nothing is hurt after dipping hands daubed with the SHB-SAMPs into highly corrosive aqueous liquids, e.g., 1 M HCl and 1 M NaOH.
Starting Page	11408
Ending Page	11415
Page Count	8
File Format	HTM / HTML PDF
ISSN	20507488
Volume Number	4
Issue Number	29
Journal	Journal of Materials Chemistry A
DOI	10.1039/c6ta04306b
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Butterfly Gerridae Ultrahydrophobicity Wafer (electronics) Biocompatibility Silicon dioxide Aerogel Hydrogen chloride
Content Type	Text
Resource Type	Article
Subject	Chemistry Renewable Energy, Sustainability and the Environment Materials Science

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