Resolving Multi-Asperity Contacts at the Nanoscale through Super-Resolution Fluorescence Imaging Article Swipe
Begüm Demirkurt
,
Dina Petrova
,
Dharmendar Kumar Sharma
,
Martin Vácha
,
Bart Weber
,
Daniel Bonn
,
Albert M. Brouwer
·
YOU?
·
· 2024
· Open Access
·
· DOI: https://doi.org/10.1021/acs.jpclett.3c02799
YOU?
·
· 2024
· Open Access
·
· DOI: https://doi.org/10.1021/acs.jpclett.3c02799
Contact mechanics, spanning nanometer to tectonic scales, faces long-standing challenges arising from multiscale random roughness, which hinders experimental validation of theories. Understanding multi-asperity rough contacts is vital for addressing catastrophic consequences of these contacts failing such as earthquakes and for diverse technological applications. To visualize such contacts, we introduce a super-resolution microscopy method utilizing spontaneous millisecond ON/OFF fluorescence blinking of contact-sensitive molecular rotor molecules immobilized on a glass coverslip. This technique achieves ∼55 nm lateral imaging resolution for rough poly(methyl methacrylate) and glass spheres on glass contacts. For soft polymer spheres due to large plastic deformation, the resolution improvement does not significantly affect the area of real contact. However, for hard glass spheres, the real contact area is found to be 2.4 times smaller than that found by diffraction-limited imaging. This study highlights, through direct visualization, the impact of material stiffness on the nanoscale structure within the area of real contact.
Related Topics
Concepts
Asperity (geotechnical engineering)
Materials science
Nanoscopic scale
SPHERES
Contact mechanics
Nanometre
Contact area
Surface finish
Nanotechnology
Optics
Image resolution
Resolution (logic)
Composite material
Computer science
Physics
Artificial intelligence
Thermodynamics
Astronomy
Finite element method
Metadata
- Type
- article
- Language
- en
- Landing Page
- https://doi.org/10.1021/acs.jpclett.3c02799
- https://pubs.acs.org/doi/pdf/10.1021/acs.jpclett.3c02799
- OA Status
- hybrid
- Cited By
- 5
- References
- 46
- Related Works
- 10
- OpenAlex ID
- https://openalex.org/W4391741757
All OpenAlex metadata
Raw OpenAlex JSON
- OpenAlex ID
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https://openalex.org/W4391741757Canonical identifier for this work in OpenAlex
- DOI
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https://doi.org/10.1021/acs.jpclett.3c02799Digital Object Identifier
- Title
-
Resolving Multi-Asperity Contacts at the Nanoscale through Super-Resolution Fluorescence ImagingWork title
- Type
-
articleOpenAlex work type
- Language
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enPrimary language
- Publication year
-
2024Year of publication
- Publication date
-
2024-02-12Full publication date if available
- Authors
-
Begüm Demirkurt, Dina Petrova, Dharmendar Kumar Sharma, Martin Vácha, Bart Weber, Daniel Bonn, Albert M. BrouwerList of authors in order
- Landing page
-
https://doi.org/10.1021/acs.jpclett.3c02799Publisher landing page
- PDF URL
-
https://pubs.acs.org/doi/pdf/10.1021/acs.jpclett.3c02799Direct link to full text PDF
- Open access
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YesWhether a free full text is available
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-
hybridOpen access status per OpenAlex
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https://pubs.acs.org/doi/pdf/10.1021/acs.jpclett.3c02799Direct OA link when available
- Concepts
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Asperity (geotechnical engineering), Materials science, Nanoscopic scale, SPHERES, Contact mechanics, Nanometre, Contact area, Surface finish, Nanotechnology, Optics, Image resolution, Resolution (logic), Composite material, Computer science, Physics, Artificial intelligence, Thermodynamics, Astronomy, Finite element methodTop concepts (fields/topics) attached by OpenAlex
- Cited by
-
5Total citation count in OpenAlex
- Citations by year (recent)
-
2025: 3, 2024: 2Per-year citation counts (last 5 years)
- References (count)
-
46Number of works referenced by this work
- Related works (count)
-
10Other works algorithmically related by OpenAlex
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