首页|Inhibition of Heterogeneous Nucleation in Water by Hydrogel Coating
Inhibition of Heterogeneous Nucleation in Water by Hydrogel Coating
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Heterogeneous nucleation plays a critical role in the phase transition of water,which can cause damage in various systems.Here,we report that heterogeneous nucleation can be inhibited by utilizing hydrogel coatings to isolate solid surfaces and water.Hydrogels,which contain over 90％water when fully swelled,exhibit a high degree of similarity to water.Due to this similarity,there is a great energy barrier for heterogeneous nucleation along the water-hydrogel interface.Additionally,hydrogel coatings,which possess polymer networks,exhibit higher fracture energy and more robust adhesion to solid surfaces compared to water.This high fracture and adhesion energy acts as a deterrent for fracture nucleation within the hydrogel or along the hydrogel-solid interface.With a hydrogel layer approximately 100 μm thick,the boiling temperature of water under atmospheric pressure can be raised from 100 to 108 ℃.Notably,hydrogel coatings also result in remarkable reductions in cavitation pressure on multiple solid surfaces.We have demonstrated the efficacy of hydrogel coatings in preventing damages resulting from acceleration-induced cavitation.Hydrogel coatings have the potential to alter the energy landscape of heterogeneous nucleation on the water-solid interface,making them an exciting avenue for innovation in heat transfer and fluidic systems.
Siyang Li、Panpan Zhu、Yaoting Xue、Lei Wang、Tuck-Whye Wong、Xuxu Yang、Haofei Zhou、Tiefeng Li、Wei Yang
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Department of Engineering Mechanics,Zhejiang University,Hangzhou 310027,China
Key Laboratory of Soft Machines and Smart Devices of Zhejiang Province,Zhejiang University,Hangzhou 310027,China
Center for X-Mechanics,Department of Engineering Mechanics,Zhejiang University,Hangzhou 310027,China
School of Biomedical Engineering and Health Sciences and Advanced Membrane Technology Research Centre,Universiti Teknologi Malaysia,Skudai 81310,Malaysia
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National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Key R&D Program of ChinaFundamental Research Funds for the Central Universities
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