Self-propelled Leidenfrost droplets on a heated glycerol pool

Abstract The development of contactless sample manipulation for microfluidic purposes has attracted significant attention within the physicochemical fields. Most existing studies focus on the interactions of unheated liquid substrates and on heated/unheated solid substrates. Therefore, the dynamics...

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Autores principales:	Ryo Matsumoto, Koji Hasegawa
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/c616af735fc84503b9d82f5fb28dfbb4
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spelling	oai:doaj.org-article:c616af735fc84503b9d82f5fb28dfbb42021-12-02T14:03:46ZSelf-propelled Leidenfrost droplets on a heated glycerol pool10.1038/s41598-021-83517-12045-2322https://doaj.org/article/c616af735fc84503b9d82f5fb28dfbb42021-02-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-83517-1https://doaj.org/toc/2045-2322Abstract The development of contactless sample manipulation for microfluidic purposes has attracted significant attention within the physicochemical fields. Most existing studies focus on the interactions of unheated liquid substrates and on heated/unheated solid substrates. Therefore, the dynamics of droplets on heated liquid pools have yet to be explored. Here, we present an experimental investigation on the levitated and self-propelled droplets on a heated pool. We aim to identify the effect of the pool temperature and the thermophysical properties of droplets on the dynamics of a self-propelled Leidenfrost droplet on a heated pool. The motion of droplets after levitation on the heated pool is visualized. To elucidate the self-propulsion of Leidenfrost droplets, we quantify the thickness of the vapour film between the approaching droplet and the pool surface. Our experimental results show a quantitative agreement with the simple model prediction for self-propelled Leidenfrost droplets. Our results provide deeper physical insights into the dynamics of Leidenfrost droplets on a heated pool for contactless and contamination-free sample manipulation.Ryo MatsumotoKoji HasegawaNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-7 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Ryo Matsumoto Koji Hasegawa Self-propelled Leidenfrost droplets on a heated glycerol pool
description	Abstract The development of contactless sample manipulation for microfluidic purposes has attracted significant attention within the physicochemical fields. Most existing studies focus on the interactions of unheated liquid substrates and on heated/unheated solid substrates. Therefore, the dynamics of droplets on heated liquid pools have yet to be explored. Here, we present an experimental investigation on the levitated and self-propelled droplets on a heated pool. We aim to identify the effect of the pool temperature and the thermophysical properties of droplets on the dynamics of a self-propelled Leidenfrost droplet on a heated pool. The motion of droplets after levitation on the heated pool is visualized. To elucidate the self-propulsion of Leidenfrost droplets, we quantify the thickness of the vapour film between the approaching droplet and the pool surface. Our experimental results show a quantitative agreement with the simple model prediction for self-propelled Leidenfrost droplets. Our results provide deeper physical insights into the dynamics of Leidenfrost droplets on a heated pool for contactless and contamination-free sample manipulation.
format	article
author	Ryo Matsumoto Koji Hasegawa
author_facet	Ryo Matsumoto Koji Hasegawa
author_sort	Ryo Matsumoto
title	Self-propelled Leidenfrost droplets on a heated glycerol pool
title_short	Self-propelled Leidenfrost droplets on a heated glycerol pool
title_full	Self-propelled Leidenfrost droplets on a heated glycerol pool
title_fullStr	Self-propelled Leidenfrost droplets on a heated glycerol pool
title_full_unstemmed	Self-propelled Leidenfrost droplets on a heated glycerol pool
title_sort	self-propelled leidenfrost droplets on a heated glycerol pool
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/c616af735fc84503b9d82f5fb28dfbb4
work_keys_str_mv	AT ryomatsumoto selfpropelledleidenfrostdropletsonaheatedglycerolpool AT kojihasegawa selfpropelledleidenfrostdropletsonaheatedglycerolpool
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Self-propelled Leidenfrost droplets on a heated glycerol pool

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