Abbot, Mete;
Iqbal, Muhammad Hamza;
Liu, Lingyue;
Koos, Erin;
Roisman, Ilia V;
Hussong, Jeanette;
Castrejón-Pita, Alfonso Arturo;
(2025)
Nanoparticles do not influence droplet break-up, spreading, or splashing.
Journal of Colloid and Interface Science
, 693
, Article 137570. 10.1016/j.jcis.2025.137570.
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Abstract
The dynamics of nanoparticle-laden droplets, from dripping to impact, have remained a subject of intense debate due to conflicting reports in the literature. Here, we address this controversy by systematically investigating the breakup, impact, spreading, and splashing behavior of fully characterized additive-free silica nanosuspensions synthesized via the Stöber process. In the absence of additives, we find that nanoparticles exert negligible influence on the fluid viscosity and dynamic behavior of droplets during break up, spreading, and splashing — even in suspensions with a high loading concentration (15 wt.%). This work highlights the pivotal role of additives, dispersants, and interparticle interactions in governing droplet behavior. Our findings offer crucial insights for a wide range of fields, including inkjet printing and spray coating.
| Type: | Article |
|---|---|
| Title: | Nanoparticles do not influence droplet break-up, spreading, or splashing |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1016/j.jcis.2025.137570 |
| Publisher version: | https://doi.org/10.1016/j.jcis.2025.137570 |
| Language: | English |
| Additional information: | © 2025 The Author(s). Published by Elsevier Inc. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). |
| Keywords: | Nanoparticles, Drop impact, Droplet, Breakup, Spreading, Splashing |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Mechanical Engineering |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10207608 |
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