Directional Liquid Transport from the Cold Region to the Hot Region on a Topological Surface

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

Detail(s)

Original languageEnglish
Pages (from-to)5059–5065
Journal / PublicationLangmuir
Volume37
Issue number16
Online published16 Apr 2021
Publication statusPublished - 27 Apr 2021

Abstract

Manifested from the "tears of wine"to the "coffee-ring effect", the directional transport of a liquid governed by the Marangoni effect is highly pervasive in our daily life and has brought a great number of applications. Similar to this surface tension gradient-dominated process, the fluid preferentially flows from the hot region to the cold region. In contrast to this perception, in this study, we report that water liquid deposited on a specially designed topological surface can flow from the low-temperature region to the high-temperature region in a spontaneous, long-range, and unidirectional manner. We show that such a behavior is mainly owing to a strong topological effect that outweighs the thermal gradient imposed along the surface. Moreover, the specific temperature range applied on the topological surface for the occurrence of such a unidirectional liquid transport phenomenon is also identified. Our findings would find important insights for developing next-generation cooling devices where a rapid flow from the condensation region to the evaporation/boiling region is preferred.

Citation Format(s)

Directional Liquid Transport from the Cold Region to the Hot Region on a Topological Surface. / Li, Jiaqian; Zhou, Xiaofeng; Tao, Ran et al.

In: Langmuir, Vol. 37, No. 16, 27.04.2021, p. 5059–5065.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review