Journal article
Oscillation and Recoil of Single and Consecutively Printed Droplets
Langmuir, v 29(7), pp 2185-2192
19 Feb 2013
PMID: 23360081
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
In this study, the recoil and oscillation of single and consecutively printed drops on substrates of different wettabilities are examined using a high speed camera. The results show that, for a droplet impact on a dry surface at Weber number similar to O (1), both inertia and capillary effects are important in the initial spreading regime before the droplet starts to oscillate. For a substrate of higher wettability, drop oscillation decays faster due to a stronger viscous dissipation over a longer oscillation path parallel to the substrate. It is also found that when a drop impacts on a sessile drop sitting on a hydrophobic substrate, the combined drop recoil twice resulted from the coalescence of the two drops, whereas no recoil is observed for the impact of a single drop on a dry surface under the same condition. Furthermore, a single-degree-of-freedom vibration model for the height oscillation of single and combined drops on a hydrophobic substrate is established. For the condition considered, the model predictions match well with the experiments. The results also show the extent to which the increase in the liquid viscosity facilitates oscillation damping and the quantitative extension of the oscillation time of a combined drop compared to a single drop.
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Details
- Title
- Oscillation and Recoil of Single and Consecutively Printed Droplets
- Creators
- Xin Yang - Drexel UniversityViral H. Chhasatia - Drexel UniversityYing Sun - Drexel University
- Publication Details
- Langmuir, v 29(7), pp 2185-2192
- Publisher
- American Chemical Society; Washington, DC
- Number of pages
- 8
- Grant note
- 0968927 / Directorate For Engineering; National Science Foundation (NSF); NSF - Directorate for Engineering (ENG) CBET-0968927; DMR-1104835 / National Science Foundation; National Science Foundation (NSF)
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- College of Engineering
- Web of Science ID
- WOS:000317260700012
- Scopus ID
- 2-s2.0-84874068281
- Other Identifier
- 991019167519404721
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InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Web of Science research areas
- Chemistry, Multidisciplinary
- Chemistry, Physical
- Materials Science, Multidisciplinary