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Title: Self-peeling of frozen water droplets upon impacting a cold surface
Authors: Fang, Wen-Zhen
Zhu, Fangqi
Zhu, Lailai
Tao, Wen-Quan
Yang, Chun
Keywords: Engineering::Mechanical engineering
Issue Date: 2022
Source: Fang, W., Zhu, F., Zhu, L., Tao, W. & Yang, C. (2022). Self-peeling of frozen water droplets upon impacting a cold surface. Communications Physics, 5(1), 51-.
Project: BX2021235
Journal: Communications Physics
Abstract: Freezing of water droplets impacting a cold substrate is a commonly encountered circumstance impairing the performance and safety of various applications. Active methods of ice removal such as heating or mechanical means are energy intensive and inconvenient. Here, we report a passive ice removal method via harvesting the thermal-mechanical stress of ice, leading to the self-peeling of frozen water droplets upon impacting a cold substrate. We find that the frozen ice completely self-peels and is then easily removable from a cold hydrophobic surface whiles the ice exhibits cracking and remains firmly sticky to a hydrophilic surface. The peeling behaviors of frozen water droplets are then scrutinized by varying the subcooling degree, impact parameters and wettability. Moreover, we develop a theoretical model to characterize the peeling and bending behaviors of the ice and also provides a simple criterion to predict the occurrence of complete self-peeling, facilitating the design of anti-icing surfaces.
ISSN: 2399-3650
DOI: 10.1038/s42005-022-00827-0
Schools: School of Mechanical and Aerospace Engineering 
Rights: © 2022 The Author(s). This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit licenses/by/4.0/.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:MAE Journal Articles

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