Bansal, Lalit ; Hatte, Sandeep ; Basu, Saptarshi ; Chakraborty, Suman (2017) Universal evaporation dynamics of a confined sessile droplet Applied Physics Letters, 111 (10). p. 101601. ISSN 0003-6951
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Official URL: http://doi.org/10.1063/1.4996986
Related URL: http://dx.doi.org/10.1063/1.4996986
Abstract
Droplet evaporation under confinement is ubiquitous to multitude of applications such as microfluidics, surface patterning, and ink-jet printing. However, the rich physics governing the universality in the underlying dynamics remains grossly elusive. Here, we bring out hitherto unexplored universal features of the evaporation dynamics of a sessile droplet entrapped in a 3D confined fluidic environment. We show, through extensive set of experiments and theoretical formulations, that the evaporation timescale for such a droplet can be represented by a unique function of the initial conditions. Moreover, using same theoretical considerations, we are able to trace and universally merge the volume evolution history of the droplets along with evaporation lifetimes, irrespective of the extent of confinement. We also showcase the internal flow transitions caused by spatio-temporal variation of evaporation flux due to confinement. These findings may be of profound importance in designing functionalized droplet evaporation devices for emerging engineering and biomedical applications
Item Type: | Article |
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Source: | Copyright of this article belongs to AIP Publishing |
ID Code: | 134759 |
Deposited On: | 11 Jan 2023 11:00 |
Last Modified: | 11 Jan 2023 11:00 |
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