Evidence map›Paper›PMID 37872419›Full record

ArticleNature chemistry2024

Droplet slipperiness despite surface heterogeneity at molecular scale.

Sakari Lepikko, Ygor Morais Jaques, Muhammad Junaid, Matilda Backholm, Jouko Lahtinen, Jaakko Julin, Ville Jokinen, Timo Sajavaara, Maria Sammalkorpi, Adam S Foster and 1 more

Erratum issuedAbstract read
In one paragraph

Article in Nature chemistry, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 10 papers.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

10 citing papers in PubMed.

  1. Floatable and Integrated Shape-shifting Hydrogel Carrier.Advanced materials (Deerfield Beach, Fla.) · 2026
    Article
  2. Article
  3. Review
  4. Review
  5. Review
  6. Article
  7. Article
  8. Article
  9. Ultra-Slippery Hydrophilic Surfaces by Hybrid Monolayers.ACS applied materials & interfaces · 2024
    Article
  10. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

11 authors.

Sakari LepikkoDepartment of Applied Physics, Aalto University, Espoo, Finland.
Ygor Morais JaquesDepartment of Applied Physics, Aalto University, Espoo, Finland.ORCID http://orcid.org/0000-0003-0114-9854
Muhammad JunaidDepartment of Applied Physics, Aalto University, Espoo, Finland.ORCID http://orcid.org/0000-0002-1268-1785
Matilda BackholmDepartment of Applied Physics, Aalto University, Espoo, Finland.ORCID http://orcid.org/0000-0003-4501-8872
Jouko LahtinenDepartment of Applied Physics, Aalto University, Espoo, Finland.ORCID http://orcid.org/0000-0002-1192-9945
Jaakko JulinDepartment of Physics, University of Jyväskylä, Jyväskylä, Finland.ORCID http://orcid.org/0000-0003-4376-891X
Ville JokinenDepartment of Chemistry and Materials Science, Aalto University, Espoo, Finland.ORCID http://orcid.org/0000-0001-6347-7461
Timo SajavaaraDepartment of Physics, University of Jyväskylä, Jyväskylä, Finland.ORCID http://orcid.org/0000-0003-2235-7441
Maria SammalkorpiCentre of Excellence in Life-Inspired Hybrid Materials (LIBER), Aalto University, Espoo, Finland.ORCID http://orcid.org/0000-0002-9248-430X
Adam S FosterDepartment of Applied Physics, Aalto University, Espoo, Finland.ORCID http://orcid.org/0000-0001-5371-5905
Robin H A RasDepartment of Applied Physics, Aalto University, Espoo, Finland. robin.ras@aalto.fi.ORCID http://orcid.org/0000-0002-2076-242X

Funding

Academy of Finland (Suomen Akatemia) 309237Academy of Finland (Suomen Akatemia) 314862Academy of Finland (Suomen Akatemia) 341459Academy of Finland (Suomen Akatemia) 346111EC | EU Framework Programme for Research and Innovation H2020 | H2020 Priority Excellent Science | H2020 European Research Council (H2020 Excellent Science - European Research Council) 725513
6 · The paper itself

Abstract

Friction determines whether liquid droplets slide off a solid surface or stick to it. Surface heterogeneity is generally acknowledged as the major cause of increased contact angle hysteresis and contact line friction of droplets. Here we challenge this long-standing premise for chemical heterogeneity at the molecular length scale. By tuning the coverage of self-assembled monolayers (SAMs), water contact angles change gradually from about 10° to 110° yet contact angle hysteresis and contact line friction are low for the low-coverage hydrophilic SAMs as well as high-coverage hydrophobic SAMs. Their slipperiness is not expected based on the substantial chemical heterogeneity of the SAMs featuring uncoated areas of the substrate well beyond the size of a water molecule as probed by metal reactants. According to molecular dynamics simulations, the low friction of both low- and high-coverage SAMs originates from the mobility of interfacial water molecules. These findings reveal a yet unknown and counterintuitive mechanism for slipperiness, opening new avenues for enhancing the mobility of droplets.

Identifiers

PMID37872419
PMCPMC10997520

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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.