Studies on wetting and fracture based on the spirit of impressionistic physics

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Professor de Gennes, who received the Nobel Prize in Physics in1991, studied a wide variety of problems, with a unique method in which he neglected many details, to reveal simple physical essences from them. He compared this method to impressionist paintings and emphasized the importance of such method in physics. In this research, with this method, we studied some wetting or capillarity problems such as the dynamics of two-dimensional bubbles and the toughness of structured materials such as soft-foam solids (shock absorbing materials), together with the dynamics of granular materials. We aimed at feeding back our results to related fields, chemical industries and research & development teams by providing simple and intuitive physical understandings. Part of these results have been introduced in details to the public through articles in newspapers and a magazine for kids.