Evaporation of water droplets from hydrophobic and hydrophilic nanoporous microcantilevers

Moonchan Lee; Dongkyu Lee; Namchul Jung; Minhyuk Yun; Changyong Yim; Sangmin Jeon

doi:10.1063/1.3541958

Evaporation of water droplets from hydrophobic and hydrophilic nanoporous microcantilevers

Moonchan Lee, Dongkyu Lee, Namchul Jung, Minhyuk Yun, Changyong Yim, Sangmin Jeon

Pohang University of Science and Technology

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

32 Scopus citations

Abstract

The evaporation dynamics of water droplets from the surfaces of well-defined nanoporous substrates, anodic aluminum oxide (AAO) cantilevers with various pore sizes, were investigated. The AAO cantilever surfaces were modified to be either hydrophilic or hydrophobic. After placing a water droplet on the cantilevers, variations in the resonance frequency and deflection during evaporation were related to the changes in mass and stress of the cantilever, respectively. The dynamics of water droplet evaporation on a hydrophilic AAO cantilever was found to be significantly different from that measured on a hydrophobic AAO cantilever due to the permeation of water into the hydrophilic nanopores.

Original language	English
Article number	013107
Journal	Applied Physics Letters
Volume	98
Issue number	1
DOIs	https://doi.org/10.1063/1.3541958
State	Published - 3 Jan 2011

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abstract = "The evaporation dynamics of water droplets from the surfaces of well-defined nanoporous substrates, anodic aluminum oxide (AAO) cantilevers with various pore sizes, were investigated. The AAO cantilever surfaces were modified to be either hydrophilic or hydrophobic. After placing a water droplet on the cantilevers, variations in the resonance frequency and deflection during evaporation were related to the changes in mass and stress of the cantilever, respectively. The dynamics of water droplet evaporation on a hydrophilic AAO cantilever was found to be significantly different from that measured on a hydrophobic AAO cantilever due to the permeation of water into the hydrophilic nanopores.",

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AU - Lee, Moonchan

AU - Lee, Dongkyu

AU - Jung, Namchul

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AU - Yim, Changyong

AU - Jeon, Sangmin

PY - 2011/1/3

Y1 - 2011/1/3

N2 - The evaporation dynamics of water droplets from the surfaces of well-defined nanoporous substrates, anodic aluminum oxide (AAO) cantilevers with various pore sizes, were investigated. The AAO cantilever surfaces were modified to be either hydrophilic or hydrophobic. After placing a water droplet on the cantilevers, variations in the resonance frequency and deflection during evaporation were related to the changes in mass and stress of the cantilever, respectively. The dynamics of water droplet evaporation on a hydrophilic AAO cantilever was found to be significantly different from that measured on a hydrophobic AAO cantilever due to the permeation of water into the hydrophilic nanopores.

AB - The evaporation dynamics of water droplets from the surfaces of well-defined nanoporous substrates, anodic aluminum oxide (AAO) cantilevers with various pore sizes, were investigated. The AAO cantilever surfaces were modified to be either hydrophilic or hydrophobic. After placing a water droplet on the cantilevers, variations in the resonance frequency and deflection during evaporation were related to the changes in mass and stress of the cantilever, respectively. The dynamics of water droplet evaporation on a hydrophilic AAO cantilever was found to be significantly different from that measured on a hydrophobic AAO cantilever due to the permeation of water into the hydrophilic nanopores.

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Evaporation of water droplets from hydrophobic and hydrophilic nanoporous microcantilevers

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