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Self-sensing, Superhydrophobic, Heterogeneous Graphene Network with Controllable Adhesion Behavior

Abstract

Abstract: Smart superhydrophobic surfaces with controllable adhesion behavior or sensing capability have become a research hotspot in many areas, such as self-cleaning and microdroplet transportation. Herein, we design and fabricate a superhydrophobic, open-cell graphene network with polypropylene coating (PP/OCGN) via a new method of boiling coating. The adhesive force of PP/OCGN for water droplet can be controlled easily from 66.8 μN to 32.3 μN by adjusting the soaking time. Using the PP/OCGN with controllable adhesion behavior, the lossless transportation of water microdroplet has been completed. What’s more, because of the boiling coating process, the PP/OCGN obtains a heterogeneous network, which has the coated graphene on the surface and the uncoated graphene in the inner. By means of the special network and strong water repellency of PP/OCGN, we report first a conductive, superhydrophobic graphene material with a self-sensing capability for continuous falling water droplets. When the water droplets fall on the surface, the PP/OCGN with low adhesive force not only makes the droplets bounce off successfully, but also has a rapid response to the bouncing process through changing the resistance. The size of falling water droplet also can be identified. Therefore, our multifunctional superhydrophobic PP/OCGN can meet multiple needs simultaneously, such as self-cleaning and detecting raindrop, and it has a great potential application in the future.

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Publication details

The article was received on 02 Jul 2018, accepted on 31 Jul 2018 and first published on 04 Aug 2018


Article type: Paper
DOI: 10.1039/C8TA06303F
Citation: J. Mater. Chem. A, 2018, Accepted Manuscript
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    Self-sensing, Superhydrophobic, Heterogeneous Graphene Network with Controllable Adhesion Behavior

    G. Ding, W. Jiao, L. Chen, M. Yan, L. Hao and R. Wang, J. Mater. Chem. A, 2018, Accepted Manuscript , DOI: 10.1039/C8TA06303F

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