Modelling Drying Pathways of an Evaporating Soft Matter Droplet

Author:

Du Guangle,Ye Fangfu,Luo Hao,Jing Guangyin,Doi Masao,Meng FanlongORCID

Abstract

Abstract 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.

Funder

Chinese Academy of Sciences

National Natural Science Foundation of China

Publisher

IOP Publishing

Subject

Physics and Astronomy (miscellaneous)

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