Physics of Fluids - Publications

Evaporation driven buckling of a drop laden with graphene oxide nanosheets

Open Access
Soft Matter Advance Article, – (2025)

Authors

	Suriya Prakash
	Eva Krolis
	Alvaro Marin
	Lorenzo Botto

BibTeΧ

@Article{D4SM01342E,
author ="Prakash, Suriya and Krolis, Eva and Marin, Alvaro and Botto, Lorenzo",

title  ="Evaporation driven buckling of a drop laden with graphene oxide nanosheets",

journal  ="Soft Matter",

year  ="2025",

pages  ="-",

publisher  ="The Royal Society of Chemistry",

doi  ="10.1039/D4SM01342E",

url  ="http://dx.doi.org/10.1039/D4SM01342E",

abstract  ="The time-dependent shape of an evaporating spherical water drop containing graphene oxide (GO) nanosheets is measured for varying solid concentration{,} humidity level{,} and pH. The drop is sitting on a superhydrophobic surface{,} depinned from it. Three different stages of evaporation are identified: isotropic retraction of the drop interface{,} buckling of the shell of particles accumulated at the fluid interface{,} and shrinking of the buckled shell at constant shell shape. Marked differences between acidic and basic drops are reported. It is argued that this feature is caused by the pH-dependent interfacial adsorption of the GO particles. For intermediate values of GO concentration{,} dried capsules with remarkably repeatable folding patterns could be obtained{,} whose mode numbers are compatible with those predicted by an inertialess{,} linear elastic shell model. When redispersed in water{,} the dried capsules from acidic drops retain their shape better than capsules from basic drops."}

Evaporation driven buckling of a drop laden with graphene oxide nanosheets

Authors

BibTeΧ

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