Increasing aspect ratio of particles suppresses buckling in shells formed by drying suspensions
Increasing aspect ratio of particles suppresses buckling in shells formed by drying suspensions
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DOI：
10.1039/d0sm01467b
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发表时间：
2020-11-14
期刊：
影响因子：
3.4
通讯作者：
Bharti, Bhuvnesh
中科院分区：
文献类型：
--
作者：
Al Harraq, Ahmed;Bharti, Bhuvnesh
胶体悬浮液的未钉扎液滴中的溶剂蒸发导致多孔壳的形成，该多孔壳在干燥施加的压差下弯曲。我们研究了棒状颗粒的纵横比在抑制这种屈曲不稳定性中的作用。更长、更细的杆装入可渗透的壳中，从而降低达西压力，从而避免屈曲。
Solvent evaporation in unpinned droplets of colloidal suspensions leads to the formation of porous shells which buckle under the pressure differential imposed by drying. We investigate the role of aspect ratio of rod-shaped particles in suppressing such buckling instabilities. Longer, thinner rods pack into permeable shells with consequently lower Darcy's pressure and thus avoid buckling.