@Article{jrm.2020.014158,
AUTHOR = {Senyun Liu, Qinglin Liu, Xian Yi, Yizhou Shen, Long Guo, Wenqing Hou, Haifeng Chen, Zhen Wang},
TITLE = {Investigation of Heterogeneous Ice Nucleation on the Micro-Cubic Structure Superhydrophobic Surface for Enhancing Icing-Delay Performance},
JOURNAL = {Journal of Renewable Materials},
VOLUME = {8},
YEAR = {2020},
NUMBER = {12},
PAGES = {1617--1631},
URL = {http://www.techscience.com/jrm/v8n12/40552},
ISSN = {2164-6341},
ABSTRACT = {The aim of this study is to explore the heterogeneous ice nucleation
behavior based on controllable micro-cubic array structure surfaces from the statistic perspective. To this end, we firstly constructed a group of micro-cubic array
structures on silicon substrates by a selective plasma etching technique. After
grafting low-free-energy substance, the as-constructed micro-cubic array structure
surfaces exhibited higher non-wettability with the water contact angle being up to
150°. On this basis, 500 cycles of freezing and melting processes were accurately
recorded to analyze the instantaneous ice nucleation behavior according to the statistical results of freezing temperature. As a consequence, the statistical freezing
temperature of the sample with micro-spacing distance of 40 μm is as low as
−17.13°C. This microstructure configuration (conforming to Cassie-Baxter wetting regime) not only could entrap more air pockets, but also achieved lower
solid-liquid contact area, resulting in lower ice nucleation rate (~2–3 orders of
magnitude less than that on the flat substrate). Furthermore, the gradually increasing micro-spacing distance to 60 μm would induce the transition from CassieBaxter to Wenzel wetting state, leading to higher freezing probability and ice
nucleation rate. The complete understanding on microstructure configuration
improving the ice nucleation will lay the foundation stone for the microstructure
design of ice-repellent materials.},
DOI = {10.32604/jrm.2020.014158}
}