Postcontact droplet spreading and bubble entrapment on a smooth surface
Postcontact droplet spreading and bubble entrapment on a smooth surface
复制标题
接触后液滴在光滑表面上的扩散和气泡的截留
DOI:
10.1103/physrevfluids.7.104003
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发表时间:
2022
影响因子:
2.7
通讯作者:
Sun, Ying
中科院分区:
文献类型:
--
作者:
Zhang, Lige;Soori, Tejaswi;Rokoni, Arif;Sun, Ying
In this paper, we use a combination of high-speed imaging and total internal reflection microscopy to study postcontact spreading dynamics and bubble entrapment of droplets impacting on surfaces lubricated with an immiscible fluid, following dimple and film modes of contact. The postcontact droplet spreading entraps two types of bubbles: (i) surface and (ii) bulk, where the former occurs when the bubbles remain at the droplet-surface interface and the latter takes place within the droplet because of the impact-induced air-cavity closure. The dimple mode of droplet-surface contact shows an absence of central surface bubble due to the contact point at the drop center and the subsequent axisymmetric spreading. The surface radial bubbles can be suppressed by tuning the impact velocity, liquid surface tension, and viscosity. Early-stage postcontact spreading dynamics are then studied for the dimple mode, where a viscocapillary scaling for the spreading radiusversus timeofis observed. Finally, the critical capillary number for wetting failure scaling is used to predict the presence of surface radial bubble entrapment with good accuracy.
影响因子:
4.6
作者:
Eddi, A.;Winkels, K. G.;Snoeijer, J. H.
通讯作者:
Snoeijer, J. H.
DOI:
--
发表时间:
2015
期刊:
影响因子:
--
作者:
A. White;T. Ward
通讯作者:
T. Ward
DOI:
--
发表时间:
2017
期刊:
The European Physical Journal E : Soft matter
影响因子:
--
作者:
Minori Shirota;M. A. J. van Limbeek;D. Lohse;Chao Sun
通讯作者:
Chao Sun