Dynamics of particle-covered droplets in shear flow: unusual breakup and deformation hysteresis

Y. Mei, G. Li, P. Moldenaers, R.M. Cardinaels

Onderzoeksoutput: Bijdrage aan tijdschriftTijdschriftartikelAcademicpeer review

8 Citaties (Scopus)

Uittreksel

The dynamics of droplets exhibiting an elastic interface generated by a percolated network of particle aggregates at the interface is microscopically investigated in a counter rotating shear flow device. The droplet deformation is significantly suppressed by interfacially localized nanoparticles, even at high Ca numbers, resulting in suspension-like behavior at high particle coverage. When the Ca number surpasses a critical value, the particle network locally breaks up, resulting in localized deformability of the interface and breakup dynamics characterized by extremely irregular shapes. Finally, the destruction of the interfacial network results in hysteresis effects in the droplet deformation.

TaalEngels
Pagina's9407-9412
TijdschriftSoft Matter
Volume12
DOI's
StatusGepubliceerd - 2016

Vingerafdruk

Shear flow
shear flow
spacecraft breakup
Hysteresis
hysteresis
Formability
destruction
Suspensions
counters
Nanoparticles
nanoparticles

Citeer dit

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Dynamics of particle-covered droplets in shear flow : unusual breakup and deformation hysteresis. / Mei, Y.; Li, G.; Moldenaers, P.; Cardinaels, R.M.

In: Soft Matter, Vol. 12, 2016, blz. 9407-9412.

Onderzoeksoutput: Bijdrage aan tijdschriftTijdschriftartikelAcademicpeer review

TY - JOUR

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AU - Moldenaers,P.

AU - Cardinaels,R.M.

PY - 2016

Y1 - 2016

N2 - The dynamics of droplets exhibiting an elastic interface generated by a percolated network of particle aggregates at the interface is microscopically investigated in a counter rotating shear flow device. The droplet deformation is significantly suppressed by interfacially localized nanoparticles, even at high Ca numbers, resulting in suspension-like behavior at high particle coverage. When the Ca number surpasses a critical value, the particle network locally breaks up, resulting in localized deformability of the interface and breakup dynamics characterized by extremely irregular shapes. Finally, the destruction of the interfacial network results in hysteresis effects in the droplet deformation.

AB - The dynamics of droplets exhibiting an elastic interface generated by a percolated network of particle aggregates at the interface is microscopically investigated in a counter rotating shear flow device. The droplet deformation is significantly suppressed by interfacially localized nanoparticles, even at high Ca numbers, resulting in suspension-like behavior at high particle coverage. When the Ca number surpasses a critical value, the particle network locally breaks up, resulting in localized deformability of the interface and breakup dynamics characterized by extremely irregular shapes. Finally, the destruction of the interfacial network results in hysteresis effects in the droplet deformation.

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DO - 10.1039/C6SM02031C

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JF - Soft Matter

SN - 1744-683X

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