Driving water cavitation in a hydrogel cavity,Soft Matter

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Driving water cavitation in a hydrogel cavity
Soft Matter ( IF 2.9 ) Pub Date : 2018-01-26 00:00:00 , DOI: 10.1039/c8sm00100f
Michele Curatolo _{1,

2,

3} , Paola Nardinocchi _{2,

3,

4} , Luciano Teresi _{1,

2,

3}

Affiliation

We study the dynamics of the dehydration process of a hydrogel with a cavity filled with water. We identify two transient phases: the first one dominated by an inflatable-balloon deformation mode, and the second by a suction effect, determining highly not homogeneous deformation modes of the hydrogel walls. This last phase triggers negative pressures into the cavity up to the typical values of water cavitation. An analysis of the factors allowing cavitation pressure to form inside the cavity is proposed, to allow for precise tuning of the key geometrical and material parameters.

中文翻译：

在水凝胶腔中驱动水空化

我们研究了充满水腔的水凝胶脱水过程的动力学。我们确定了两个过渡阶段：第一个阶段由充气气球变形模式主导，第二个阶段由吸力效应确定水凝胶壁的高度不均匀变形模式。最后一个阶段触发进入空腔的负压，直至达到水蚀现象的典型值。提出了对允许在腔体内形成空化压力的因素的分析，以允许对关键的几何和材料参数进行精确调整。

更新日期：2018-01-26

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