论文标题
蒸发软物质液滴的干燥途径
Drying Pathways of an Evaporating Soft Matter Droplet
论文作者
论文摘要
软物质溶液的微滴在干燥后具有不同的形态，最终可能会变成皱纹，屈曲或空洞的颗粒。我们研究了这项工作中干燥软物质液滴的形态演变：在干燥，皱纹或空化不稳定性的早期阶段可能会在液滴中发生，具体取决于临界皱纹和气蚀压力之间的比较；在干燥的后期阶段，如果首先发生气穴，则不会出现皱纹，而如果首先发生皱纹，仍然可能会有空气。提供了弹性长度，凝胶层厚度和体重减轻的三维相图，以说明软物质液滴的这些干燥途径，这可以指导带有所需形态的微粒的未来制造。
Micro-droplets of soft matter solutions have different morphologies upon drying, and can finally become wrinkled, buckled or cavitated particles. We investigate the morphology evolution of a drying soft matter droplet in this work: at the early stage of drying, wrinkling or cavitation instability can occur in the droplet, depending on the comparison between the critical wrinkling and cavitation pressure; at a later stage of drying, no wrinkle will appear if cavitation happens first, while there can still be cavitation if wrinkling happens first. A three-dimensional phase diagram in the space of elastic length, gel layer thickness and weight loss is provided for illustrating these drying pathways of a soft matter droplet, which can guide future fabrications of micro-particles with desired morphologies.
