ArticleProceedings of the National Academy of Sciences of the United States of America2020
Evaporating droplets on oil-wetted surfaces: Suppression of the coffee-stain effect.
Article in Proceedings of the National Academy of Sciences of the United States of America, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.
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Who cites it
12 citing papers in PubMed, 92 citations in OpenAlex.
- Intelligent Perception, Decision-Making and Actuation Technologies for Precision Agrochemical Spraying: Current Advances and Future Perspectives.Sensors (Basel, Switzerland) · 2026Review
- Symmetry Breaking in Chemical Systems: Engineering Complexity Through Self-Organization and Marangoni Flows.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026Article
- Tailoring Peptide Coacervates for Advanced Biotechnological Applications: Enhancing Control, Encapsulation, and Antioxidant Properties.ACS applied materials & interfaces · 2025Article
- Acoustic separation and concentration of exosomes for nucleotide detection: ASCENDx.Science advances · 2024Article
- Multicompartmental coacervate-based protocell by spontaneous droplet evaporation.Nature communications · 2024Article
- Spatial reorganization of analytes in charged aqueous microdroplets.Chemical science · 2022Article
- Ink-lithographic fabrication of silver-nanocrystal-based multiaxial strain gauge sensors through the coffee-ring effect for voice recognition applications.Nano convergence · 2022Article
- Evaporation of a Sessile Colloidal Water-Glycerol Droplet: Marangoni Ring Formation.Langmuir : the ACS journal of surfaces and colloids · 2022Article
- Self-assembly of highly ordered micro- and nanoparticle deposits.Nature communications · 2022Article
- A highly sensitive surface-enhanced Raman scattering substrate prepared on a hydrophobic surface using controlled evaporation.RSC advances · 2021Article
- Particle Size Determines the Shape of Supraparticles in Self-Lubricating Ternary Droplets.ACS nano · 2021Article
- On explosive boiling of a multicomponent Leidenfrost drop.Proceedings of the National Academy of Sciences of the United States of America · 2021Article
Corrections and comments
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Authors and funding
6 authors at 3 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The evaporation of suspension droplets is the underlying mechanism in many surface-coating and surface-patterning applications. However, the uniformity of the final deposit suffers from the coffee-stain effect caused by contact line pinning. Here, we show that control over particle deposition can be achieved through droplet evaporation on oil-wetted hydrophilic surfaces. We demonstrate by flow visualization, theory, and numerics that the final deposit of the particles is governed by the coupling of the flow field in the evaporating droplet, the movement of its contact line, and the wetting state of the thin film surrounding the droplet. We show that the dynamics of the contact line can be tuned through the addition of a surfactant, thereby controlling the surface energies, which then leads to control over the final particle deposit. We also obtain an analytical expression for the radial velocity profile which reflects the hindering of the evaporation at the rim of the droplet by the nonvolatile oil meniscus, preventing flow toward the contact line, thus suppressing the coffee-stain effect. Finally, we confirm our physical interpretation by numerical simulations that are in qualitative agreement with the experiment.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.