Quantifying Surface Wetting Properties Using Droplet Probe Atomic Force Microscopy

Dan Daniel, Yunita Florida, Chee Leng Lay, Xue Qi Koh, Anqi Sng, Nikodem Tomczak

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

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.
Original languageEnglish (US)
Pages (from-to)42386-42392
Number of pages7
JournalACS Applied Materials and Interfaces
Volume12
Issue number37
DOIs
StatePublished - Sep 16 2020
Externally publishedYes

Bibliographical note

Generated from Scopus record by KAUST IRTS on 2023-02-14

ASJC Scopus subject areas

  • General Materials Science

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