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  Leidenfrost Effect as a Directed Percolation Phase Transition

Chantelot, P., & Lohse, D. (2021). Leidenfrost Effect as a Directed Percolation Phase Transition. Physical Review Letters, 127: 124502. doi:10.1103/PhysRevLett.127.124502.

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 Creators:
Chantelot, Pierre, Author
Lohse, Detlef1, Author              
Affiliations:
1Max Planck Institute for Dynamics and Self-Organization, Max Planck Society, ou_2063285              

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 Abstract: Volatile drops deposited on a hot solid can levitate on a cushion of their own vapor, without contacting the surface. We propose to understand the onset of this so-called Leidenfrost effect through an analogy to nonequilibrium systems exhibiting a directed percolation phase transition. When performing impacts on superheated solids, we observe a regime of spatiotemporal intermittency in which localized wet patches coexist with dry regions on the substrate. We report a critical surface temperature, which marks the upper bound of a large range of temperatures in which levitation and contact coexist. In this range, with decreasing temperature, the equilibrium wet fraction increases continuously from zero to one. Also, the statistical properties of the spatiotemporally intermittent regime are in agreement with that of the directed percolation universality class. This analogy allows us to redefine the Leidenfrost temperature and shed light on the physical mechanisms governing the transition to the Leidenfrost state.

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Language(s): eng - English
 Dates: 2021-09-172021
 Publication Status: Published in print
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 Rev. Type: -
 Identifiers: DOI: 10.1103/PhysRevLett.127.124502
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Title: Physical Review Letters
Source Genre: Journal
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Pages: 6 Volume / Issue: 127 Sequence Number: 124502 Start / End Page: - Identifier: ISSN: 0031-9007
ISSN: 1079-7114