Open Access
Open access

Evaporating droplets on oil-wetted surfaces: Suppression of the coffee-stain effect

Yaxing Li 1
Christian Diddens 1, 2
Tim Segers 1, 2
HERMAN WIJSHOFF 2, 3
Publication typeJournal Article
Publication date2020-07-02
scimago Q1
wos Q1
SJR3.414
CiteScore16.5
Impact factor9.1
ISSN00278424, 10916490
Multidisciplinary
Abstract
Significance

Evaporating suspension droplets in general leave ring-like stains. For many applications requiring homogeneous deposition, the stains imply a major problem. This in particular holds for inkjet printing, surface patterning, self-assembly, and 3D printing technologies. Here we offer a robust method to suppress the coffee-stain effect by letting particle-laden droplets evaporate on oil-wetted surfaces. Through tuning the surface energy of the droplets by adding surfactants, we can manipulate the contact line behavior, the flow structure, and the wetting state of the thin film surrounding the droplet and accomplish a controlled particle deposition. Our findings may open perspectives for uniform coatings in the abovementioned applications, but are also relevant for other complex liquid droplet evaporation, e.g., for disease transmission or in agriculture.

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GOST |
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GOST Copy
Li Y. et al. Evaporating droplets on oil-wetted surfaces: Suppression of the coffee-stain effect // Proceedings of the National Academy of Sciences of the United States of America. 2020. Vol. 117. No. 29. pp. 16756-16763.
GOST all authors (up to 50) Copy
Li Y., Diddens C., Segers T., WIJSHOFF H., Versluis M., Lohse D. Evaporating droplets on oil-wetted surfaces: Suppression of the coffee-stain effect // Proceedings of the National Academy of Sciences of the United States of America. 2020. Vol. 117. No. 29. pp. 16756-16763.
RIS |
Cite this
RIS Copy
TY - JOUR
DO - 10.1073/pnas.2006153117
UR - https://doi.org/10.1073/pnas.2006153117
TI - Evaporating droplets on oil-wetted surfaces: Suppression of the coffee-stain effect
T2 - Proceedings of the National Academy of Sciences of the United States of America
AU - Li, Yaxing
AU - Diddens, Christian
AU - Segers, Tim
AU - WIJSHOFF, HERMAN
AU - Versluis, Michel
AU - Lohse, Detlef
PY - 2020
DA - 2020/07/02
PB - Proceedings of the National Academy of Sciences (PNAS)
SP - 16756-16763
IS - 29
VL - 117
PMID - 32616571
SN - 0027-8424
SN - 1091-6490
ER -
BibTex |
Cite this
BibTex (up to 50 authors) Copy
@article{2020_Li,
author = {Yaxing Li and Christian Diddens and Tim Segers and HERMAN WIJSHOFF and Michel Versluis and Detlef Lohse},
title = {Evaporating droplets on oil-wetted surfaces: Suppression of the coffee-stain effect},
journal = {Proceedings of the National Academy of Sciences of the United States of America},
year = {2020},
volume = {117},
publisher = {Proceedings of the National Academy of Sciences (PNAS)},
month = {jul},
url = {https://doi.org/10.1073/pnas.2006153117},
number = {29},
pages = {16756--16763},
doi = {10.1073/pnas.2006153117}
}
MLA
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MLA Copy
Li, Yaxing, et al. “Evaporating droplets on oil-wetted surfaces: Suppression of the coffee-stain effect.” Proceedings of the National Academy of Sciences of the United States of America, vol. 117, no. 29, Jul. 2020, pp. 16756-16763. https://doi.org/10.1073/pnas.2006153117.