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Leidenfrost droplet trampolining
A liquid droplet dispensed over a sufficiently hot surface does not make contact but instead hovers on a cushion of its own self-generated vapor. Since its discovery in 1756, this so-called Leidenfrost effect has been intensively studied. Here we report a remarkable self-propulsion mechanism of Leid...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7979863/ https://www.ncbi.nlm.nih.gov/pubmed/33741968 http://dx.doi.org/10.1038/s41467-021-21981-z |
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author | Graeber, Gustav Regulagadda, Kartik Hodel, Pascal Küttel, Christian Landolf, Dominic Schutzius, Thomas M. Poulikakos, Dimos |
author_facet | Graeber, Gustav Regulagadda, Kartik Hodel, Pascal Küttel, Christian Landolf, Dominic Schutzius, Thomas M. Poulikakos, Dimos |
author_sort | Graeber, Gustav |
collection | PubMed |
description | A liquid droplet dispensed over a sufficiently hot surface does not make contact but instead hovers on a cushion of its own self-generated vapor. Since its discovery in 1756, this so-called Leidenfrost effect has been intensively studied. Here we report a remarkable self-propulsion mechanism of Leidenfrost droplets against gravity, that we term Leidenfrost droplet trampolining. Leidenfrost droplets gently deposited on fully rigid surfaces experience self-induced spontaneous oscillations and start to gradually bounce from an initial resting altitude to increasing heights, thereby violating the traditionally accepted Leidenfrost equilibrium. We found that the continuously draining vapor cushion initiates and fuels Leidenfrost trampolining by inducing ripples on the droplet bottom surface, which translate into pressure oscillations and induce self-sustained periodic vertical droplet bouncing over a broad range of experimental conditions. |
format | Online Article Text |
id | pubmed-7979863 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-79798632021-04-16 Leidenfrost droplet trampolining Graeber, Gustav Regulagadda, Kartik Hodel, Pascal Küttel, Christian Landolf, Dominic Schutzius, Thomas M. Poulikakos, Dimos Nat Commun Article A liquid droplet dispensed over a sufficiently hot surface does not make contact but instead hovers on a cushion of its own self-generated vapor. Since its discovery in 1756, this so-called Leidenfrost effect has been intensively studied. Here we report a remarkable self-propulsion mechanism of Leidenfrost droplets against gravity, that we term Leidenfrost droplet trampolining. Leidenfrost droplets gently deposited on fully rigid surfaces experience self-induced spontaneous oscillations and start to gradually bounce from an initial resting altitude to increasing heights, thereby violating the traditionally accepted Leidenfrost equilibrium. We found that the continuously draining vapor cushion initiates and fuels Leidenfrost trampolining by inducing ripples on the droplet bottom surface, which translate into pressure oscillations and induce self-sustained periodic vertical droplet bouncing over a broad range of experimental conditions. Nature Publishing Group UK 2021-03-19 /pmc/articles/PMC7979863/ /pubmed/33741968 http://dx.doi.org/10.1038/s41467-021-21981-z Text en © The Author(s) 2021 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
spellingShingle | Article Graeber, Gustav Regulagadda, Kartik Hodel, Pascal Küttel, Christian Landolf, Dominic Schutzius, Thomas M. Poulikakos, Dimos Leidenfrost droplet trampolining |
title | Leidenfrost droplet trampolining |
title_full | Leidenfrost droplet trampolining |
title_fullStr | Leidenfrost droplet trampolining |
title_full_unstemmed | Leidenfrost droplet trampolining |
title_short | Leidenfrost droplet trampolining |
title_sort | leidenfrost droplet trampolining |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7979863/ https://www.ncbi.nlm.nih.gov/pubmed/33741968 http://dx.doi.org/10.1038/s41467-021-21981-z |
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