Reza, MS and Ko, Y-S and Jeon, BE and Sen, P and Lee, C (2024) Dynamics of microdroplet generation via drop impact on a superhydrophobic micropore. In: Physics of Fluids, 36 (5).
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Abstract
This study delves into the dynamics of generating microdroplets by impacting a droplet onto a micropore on superhydrophobic copper substrates. It identifies the necessary impact velocities for single microdroplet formation for each micropore and characterizes microdroplet size in relation to micropore diameter. The results underscore the significant role of viscosity, especially as the diameter of the micropore decreases. For micropores measuring 400 μm, an increase in viscosity up to 8 cP does not alter the critical impact velocities, while smaller diameters of 50 and 100 μm see a notable change in critical velocities with even minor increases in viscosity. Remarkably, the diameter of the microdroplet remains consistent regardless of changes in the liquid viscosity or impact velocity. This research showcases two practical uses of single microdroplets: printing on paper and fabricating microbeads. The insights gained from these findings pave the way for advancements in printing technology and microfabrication techniques. © 2024 Author(s).
| Item Type: | Journal Article |
|---|---|
| Publication: | Physics of Fluids |
| Publisher: | American Institute of Physics |
| Additional Information: | The copyright for this article belongs to Authors |
| Keywords: | Microporosity, Copper substrates; Critical impact velocity; Critical velocities; Drop Impact; Impact velocities; IT Identify; Liquid viscosity; Micro droplets; Micropores; Superhydrophobic, Hydrophobicity |
| Department/Centre: | Division of Interdisciplinary Sciences > Centre for Nano Science and Engineering |
| Date Deposited: | 29 Jul 2024 05:10 |
| Last Modified: | 29 Jul 2024 05:10 |
| URI: | http://eprints.iisc.ac.in/id/eprint/85192 |
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