Quantifying Surface Wetting Properties Using Droplet Probe Atomic Force Microscopy

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Quantifying Surface Wetting Properties Using Droplet Probe Atomic Force Microscopy
Title:
Quantifying Surface Wetting Properties Using Droplet Probe Atomic Force Microscopy
Other Titles:
ACS Applied Materials and Interfaces
Publication Date:
17 August 2020
Citation:
Daniel, D., Florida, Y., Lay, C. L., Koh, X. Q., Sng, A., & Tomczak, N. (2020). Quantifying Surface Wetting Properties Using Droplet Probe Atomic Force Microscopy. ACS Applied Materials & Interfaces, 12(37), 42386–42392. doi:10.1021/acsami.0c12123
Abstract:
The functional properties of a surface, such as its anti- fogging or anti-fouling performance, are influenced by its wettability. To quantify surface wettability, the most common approach is to measure the contact angles of a liquid droplet on the surface. While well established and relatively easy to perform, contact angle measurements were developed to describe macroscopic wetting properties and are difficult to perform for submillimetric droplets. Moreover, they cannot spatially resolve surface heterogeneities that can contribute to surface fouling. To address these shortcomings, we report on using an atomic force microscopy technique to quantitatively measure the interaction forces between a microdroplet and a surface with piconewton force resolution. We show how our technique can be used to spatially map topographical and chemical heterogeneities with micron resolution.
License type:
Publisher Copyright
Funding Info:
This research / project is supported by the A*STAR - Pharos Advanced Surfaces Programme
Grant Reference no. : 1523700101
Description:
“This document is the Accepted Manuscript version of a Published Work that appeared in final form in [ACS Applied Materials and Interfaces], copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see [http://dx.doi.org/10.1021/acsami.0c12123, see http://pubs.acs.org/page/policy/articlesonrequest/index.html].”
ISSN:
1944-8244
1944-8252
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