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Spontaneous jumping, bouncing and trampolining of hydrogel drops on a heated plate

The contact between liquid drops and hot solid surfaces is of practical importance for industrial processes, such as thermal spraying and spray cooling. The contact and bouncing of solid spheres is also an important event encountered in ball milling, powder processing, and everyday activities, such...

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Autores principales: Pham, Jonathan T., Paven, Maxime, Wooh, Sanghyuk, Kajiya, Tadashi, Butt, Hans-Jürgen, Vollmer, Doris
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5640668/
https://www.ncbi.nlm.nih.gov/pubmed/29030546
http://dx.doi.org/10.1038/s41467-017-01010-8
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author Pham, Jonathan T.
Paven, Maxime
Wooh, Sanghyuk
Kajiya, Tadashi
Butt, Hans-Jürgen
Vollmer, Doris
author_facet Pham, Jonathan T.
Paven, Maxime
Wooh, Sanghyuk
Kajiya, Tadashi
Butt, Hans-Jürgen
Vollmer, Doris
author_sort Pham, Jonathan T.
collection PubMed
description The contact between liquid drops and hot solid surfaces is of practical importance for industrial processes, such as thermal spraying and spray cooling. The contact and bouncing of solid spheres is also an important event encountered in ball milling, powder processing, and everyday activities, such as ball sports. Using high speed video microscopy, we demonstrate that hydrogel drops, initially at rest on a surface, spontaneously jump upon rapid heating and continue to bounce with increasing amplitudes. Jumping is governed by the surface wettability, surface temperature, hydrogel elasticity, and adhesion. A combination of low-adhesion impact behavior and fast water vapor formation supports continuous bouncing and trampolining. Our results illustrate how the interplay between solid and liquid characteristics of hydrogels results in intriguing dynamics, as reflected by spontaneous jumping, bouncing, trampolining, and extremely short contact times.
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spelling pubmed-56406682017-10-18 Spontaneous jumping, bouncing and trampolining of hydrogel drops on a heated plate Pham, Jonathan T. Paven, Maxime Wooh, Sanghyuk Kajiya, Tadashi Butt, Hans-Jürgen Vollmer, Doris Nat Commun Article The contact between liquid drops and hot solid surfaces is of practical importance for industrial processes, such as thermal spraying and spray cooling. The contact and bouncing of solid spheres is also an important event encountered in ball milling, powder processing, and everyday activities, such as ball sports. Using high speed video microscopy, we demonstrate that hydrogel drops, initially at rest on a surface, spontaneously jump upon rapid heating and continue to bounce with increasing amplitudes. Jumping is governed by the surface wettability, surface temperature, hydrogel elasticity, and adhesion. A combination of low-adhesion impact behavior and fast water vapor formation supports continuous bouncing and trampolining. Our results illustrate how the interplay between solid and liquid characteristics of hydrogels results in intriguing dynamics, as reflected by spontaneous jumping, bouncing, trampolining, and extremely short contact times. Nature Publishing Group UK 2017-10-13 /pmc/articles/PMC5640668/ /pubmed/29030546 http://dx.doi.org/10.1038/s41467-017-01010-8 Text en © The Author(s) 2017 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
Pham, Jonathan T.
Paven, Maxime
Wooh, Sanghyuk
Kajiya, Tadashi
Butt, Hans-Jürgen
Vollmer, Doris
Spontaneous jumping, bouncing and trampolining of hydrogel drops on a heated plate
title Spontaneous jumping, bouncing and trampolining of hydrogel drops on a heated plate
title_full Spontaneous jumping, bouncing and trampolining of hydrogel drops on a heated plate
title_fullStr Spontaneous jumping, bouncing and trampolining of hydrogel drops on a heated plate
title_full_unstemmed Spontaneous jumping, bouncing and trampolining of hydrogel drops on a heated plate
title_short Spontaneous jumping, bouncing and trampolining of hydrogel drops on a heated plate
title_sort spontaneous jumping, bouncing and trampolining of hydrogel drops on a heated plate
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5640668/
https://www.ncbi.nlm.nih.gov/pubmed/29030546
http://dx.doi.org/10.1038/s41467-017-01010-8
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