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Inhibition of Heterogeneous Nucleation in Water by Hydrogel Coating
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作者 Siyang Li Panpan Zhu +6 位作者 Yaoting Xue lei wangg Tuck-Whye Wong Xuxu Yang Haoei Zhou Tiefeng Li We Yang 《Research》 SCIE EI CSCD 2024年第2期139-147,共9页
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... 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 100μm 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. 展开更多
关键词 FRACTURE CAVITATION SIMILARITY
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