Evaporation of elongated droplets on chemically stripe-patterned surfaces

H.P. Jansen; Henricus J.W. Zandvliet; Ernst S. Kooij

doi:10.1016/j.ijheatmasstransfer.2014.11.028

Evaporation of elongated droplets on chemically stripe-patterned surfaces

H.P. Jansen, Henricus J.W. Zandvliet, Ernst S. Kooij

Research output: Contribution to journal › Article › Academic › peer-review

21 Citations (Scopus)

Abstract

We investigate the evaporation of elongated droplets on chemically striped patterned surfaces. Variation of elongation is achieved by depositing droplets on surfaces with varying ratios of hydrophobic and hydrophilic stripe widths. Elongated droplets evaporate faster than more spherical droplets. Both the lower contact angles and the elongation play a role in the diffusion process, leading to a decrease of the total evaporation time. Models for spherical cap-shaped droplets are applied to the elongated droplets and we show that they qualitatively agree. An empirical correction, taking into account the elongation, is proposed that describes the lifetimes of elongated droplets

Original language	English
Pages (from-to)	537-544
Number of pages	8
Journal	International journal of heat and mass transfer
Volume	82
DOIs	https://doi.org/10.1016/j.ijheatmasstransfer.2014.11.028
Publication status	Published - 2015

Keywords

METIS-310921
IR-96694

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10.1016/j.ijheatmasstransfer.2014.11.028

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Jansen, H. P., Zandvliet, H. J. W., & Kooij, E. S. (2015). Evaporation of elongated droplets on chemically stripe-patterned surfaces. International journal of heat and mass transfer, 82, 537-544. https://doi.org/10.1016/j.ijheatmasstransfer.2014.11.028

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AU - Zandvliet, Henricus J.W.

AU - Kooij, Ernst S.

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AB - We investigate the evaporation of elongated droplets on chemically striped patterned surfaces. Variation of elongation is achieved by depositing droplets on surfaces with varying ratios of hydrophobic and hydrophilic stripe widths. Elongated droplets evaporate faster than more spherical droplets. Both the lower contact angles and the elongation play a role in the diffusion process, leading to a decrease of the total evaporation time. Models for spherical cap-shaped droplets are applied to the elongated droplets and we show that they qualitatively agree. An empirical correction, taking into account the elongation, is proposed that describes the lifetimes of elongated droplets

KW - METIS-310921

KW - IR-96694

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DO - 10.1016/j.ijheatmasstransfer.2014.11.028

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JO - International journal of heat and mass transfer

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