Mapping microscale wetting variations on biological and synthetic water-repellent surfaces

Tutkimustuotos: Lehtiartikkeli

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Mapping microscale wetting variations on biological and synthetic water-repellent surfaces. / Liimatainen, Ville; Vuckovac, Maja; Jokinen, Ville; Sariola, Veikko; Hokkanen, Matti; Zhou, Quan; Ras, Robin.

julkaisussa: Nature Communications, Vuosikerta 8, Nro 1, 1798 , 27.11.2017, s. 1-7.

Tutkimustuotos: Lehtiartikkeli

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Bibtex - Lataa

@article{73955b9a8a0c432c9b399cab7ed95aa0,
title = "Mapping microscale wetting variations on biological and synthetic water-repellent surfaces",
abstract = "Droplets slip and bounce on superhydrophobic surfaces, enabling remarkable functions in biology and technology. These surfaces often contain microscopic irregularities in surface texture and chemical composition, which may affect or even govern macroscopic wetting phenomena. However, effective ways to quantify and map microscopic variations of wettability are still missing, because existing contact angle and force-based methods lack sensitivity and spatial resolution. Here, we introduce wetting maps that visualize local variations in wetting through droplet adhesion forces, which correlate with wettability. We develop scanning droplet adhesion microscopy, a technique to obtain wetting maps with spatial resolution down to 10 µm and three orders of magnitude better force sensitivity than current tensiometers. The microscope allows characterization of challenging non-flat surfaces, like the butterfly wing, previously difficult to characterize by contact angle method due to obscured view. Furthermore, the technique reveals wetting heterogeneity of micropillared model surfaces previously assumed to be uniform.",
keywords = "Scanning droplet adhesion microscopy, wetting, superhydrophobic, WATER-REPELLENT, micromanipulation, Robotics, automation",
author = "Ville Liimatainen and Maja Vuckovac and Ville Jokinen and Veikko Sariola and Matti Hokkanen and Quan Zhou and Robin Ras",
note = "| openaire: EC/H2020/725513/EU//SuperRepel",
year = "2017",
month = "11",
day = "27",
doi = "10.1038/s41467-017-01510-7",
language = "English",
volume = "8",
pages = "1--7",
journal = "Nature Communications",
issn = "2041-1723",
publisher = "Nature Publishing Group",
number = "1",

}

RIS - Lataa

TY - JOUR

T1 - Mapping microscale wetting variations on biological and synthetic water-repellent surfaces

AU - Liimatainen, Ville

AU - Vuckovac, Maja

AU - Jokinen, Ville

AU - Sariola, Veikko

AU - Hokkanen, Matti

AU - Zhou, Quan

AU - Ras, Robin

N1 - | openaire: EC/H2020/725513/EU//SuperRepel

PY - 2017/11/27

Y1 - 2017/11/27

N2 - Droplets slip and bounce on superhydrophobic surfaces, enabling remarkable functions in biology and technology. These surfaces often contain microscopic irregularities in surface texture and chemical composition, which may affect or even govern macroscopic wetting phenomena. However, effective ways to quantify and map microscopic variations of wettability are still missing, because existing contact angle and force-based methods lack sensitivity and spatial resolution. Here, we introduce wetting maps that visualize local variations in wetting through droplet adhesion forces, which correlate with wettability. We develop scanning droplet adhesion microscopy, a technique to obtain wetting maps with spatial resolution down to 10 µm and three orders of magnitude better force sensitivity than current tensiometers. The microscope allows characterization of challenging non-flat surfaces, like the butterfly wing, previously difficult to characterize by contact angle method due to obscured view. Furthermore, the technique reveals wetting heterogeneity of micropillared model surfaces previously assumed to be uniform.

AB - Droplets slip and bounce on superhydrophobic surfaces, enabling remarkable functions in biology and technology. These surfaces often contain microscopic irregularities in surface texture and chemical composition, which may affect or even govern macroscopic wetting phenomena. However, effective ways to quantify and map microscopic variations of wettability are still missing, because existing contact angle and force-based methods lack sensitivity and spatial resolution. Here, we introduce wetting maps that visualize local variations in wetting through droplet adhesion forces, which correlate with wettability. We develop scanning droplet adhesion microscopy, a technique to obtain wetting maps with spatial resolution down to 10 µm and three orders of magnitude better force sensitivity than current tensiometers. The microscope allows characterization of challenging non-flat surfaces, like the butterfly wing, previously difficult to characterize by contact angle method due to obscured view. Furthermore, the technique reveals wetting heterogeneity of micropillared model surfaces previously assumed to be uniform.

KW - Scanning droplet adhesion microscopy

KW - wetting

KW - superhydrophobic

KW - WATER-REPELLENT

KW - micromanipulation

KW - Robotics

KW - automation

UR - http://www.nature.com/articles/s41467-017-01510-7

U2 - 10.1038/s41467-017-01510-7

DO - 10.1038/s41467-017-01510-7

M3 - Article

VL - 8

SP - 1

EP - 7

JO - Nature Communications

JF - Nature Communications

SN - 2041-1723

IS - 1

M1 - 1798

ER -

ID: 16267714