Preferential ice growth on grooved surface for crisscross-aligned graphene aerogel with large negative Poisson’s ratio

Meng Li, Nifang Zhao, Anran Mao, Mengning Wang, Ziyu Shao, Weiwei Gao () and Hao Bai ()
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Meng Li: Zhejiang University
Nifang Zhao: Zhejiang University
Anran Mao: Zhejiang University
Mengning Wang: Zhejiang University
Ziyu Shao: Zhejiang University
Weiwei Gao: Zhejiang University
Hao Bai: Zhejiang University

Nature Communications, 2023, vol. 14, issue 1, 1-9

Abstract: Abstract Ice formation on solid surfaces is a ubiquitous process in our daily life, and ice orientation plays a critical role in anti-icing/deicing, organ cryo-preservation, and material fabrication. Although previous studies have shown that surface grooves can regulate the orientation of ice crystals, whether the parallel or perpendicular alignment to the grooves is still under debate. Here, we systematically investigate ice formation and its oriented growth on grooved surfaces through both in situ observation and theoretical simulation, and discover a remarkable size effect of the grooves. With the designability of surface groove patterns, the preferential growth of ice crystals is programmed for the fabrication of a crisscross-aligned graphene aerogel with large negative Poisson’s ratio. In addition, the size effect provides guidance for the design and fabrication of solid surfaces where the effective control of ice orientation is highly desired, such as efficient deicing, long time organ cryo-preservation, and ice-templated materials.

Date: 2023
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DOI: 10.1038/s41467-023-43441-6

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