Dermal Denticles of Three Slowly Swimming Shark Species: Microscopy and Flow Visualization
Shark skin has for many years inspired engineers to produce biomimetic structures reducing surface drag or acting as an anti-fouling layer. Both effects are presumed to be consequences of the structure of shark skin that is composed of arrays of so-called dermal denticles. However, the understanding...
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2019
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Online Access: | https://doi.org/10.3390/biomimetics4020038 https://doaj.org/article/8a877afd006d4b3880d84c0ec705e507 |
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ftdoajarticles:oai:doaj.org/article:8a877afd006d4b3880d84c0ec705e507 2023-05-15T16:29:14+02:00 Dermal Denticles of Three Slowly Swimming Shark Species: Microscopy and Flow Visualization Katrine Feld Anne Noer Kolborg Camilla Marie Nyborg Mirko Salewski John Fleng Steffensen Kirstine Berg-Sørensen 2019-05-01T00:00:00Z https://doi.org/10.3390/biomimetics4020038 https://doaj.org/article/8a877afd006d4b3880d84c0ec705e507 EN eng MDPI AG https://www.mdpi.com/2313-7673/4/2/38 https://doaj.org/toc/2313-7673 2313-7673 doi:10.3390/biomimetics4020038 https://doaj.org/article/8a877afd006d4b3880d84c0ec705e507 Biomimetics, Vol 4, Iss 2, p 38 (2019) shark skin micro-PIV microfluidics Technology T article 2019 ftdoajarticles https://doi.org/10.3390/biomimetics4020038 2022-12-31T13:27:42Z Shark skin has for many years inspired engineers to produce biomimetic structures reducing surface drag or acting as an anti-fouling layer. Both effects are presumed to be consequences of the structure of shark skin that is composed of arrays of so-called dermal denticles. However, the understanding of the full functional role of the dermal denticles is still a topic of research. We report optical microscopy and scanning electron microscopy of dermal denticles from three slowly swimming shark species for which the functional role of the dermal denticles is suggested as one of defense (possibly understood as anti-fouling) and/or abrasion strength. The three species are Greenland shark ( Somnosius microcephalus ), small-spotted catshark ( Scyliorhinus canicula ) and spiny dogfish ( Squalus acanthias ). Samples were taken at over 30 different positions on the bodies of the sharks. In addition, we demonstrate that the flow pattern near natural shark skin can be measured by micro-PIV (particle image velocimetry). The microfluidic experiments are complemented by numerical flow simulations. Both visualize unsteady flow, small eddies, and recirculation bubbles behind the natural dermal denticles. Article in Journal/Newspaper Greenland spiny dogfish Squalus acanthias Directory of Open Access Journals: DOAJ Articles Greenland Canicula ENVELOPE(-58.515,-58.515,-63.717,-63.717) Biomimetics 4 2 38 |
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Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
shark skin micro-PIV microfluidics Technology T |
spellingShingle |
shark skin micro-PIV microfluidics Technology T Katrine Feld Anne Noer Kolborg Camilla Marie Nyborg Mirko Salewski John Fleng Steffensen Kirstine Berg-Sørensen Dermal Denticles of Three Slowly Swimming Shark Species: Microscopy and Flow Visualization |
topic_facet |
shark skin micro-PIV microfluidics Technology T |
description |
Shark skin has for many years inspired engineers to produce biomimetic structures reducing surface drag or acting as an anti-fouling layer. Both effects are presumed to be consequences of the structure of shark skin that is composed of arrays of so-called dermal denticles. However, the understanding of the full functional role of the dermal denticles is still a topic of research. We report optical microscopy and scanning electron microscopy of dermal denticles from three slowly swimming shark species for which the functional role of the dermal denticles is suggested as one of defense (possibly understood as anti-fouling) and/or abrasion strength. The three species are Greenland shark ( Somnosius microcephalus ), small-spotted catshark ( Scyliorhinus canicula ) and spiny dogfish ( Squalus acanthias ). Samples were taken at over 30 different positions on the bodies of the sharks. In addition, we demonstrate that the flow pattern near natural shark skin can be measured by micro-PIV (particle image velocimetry). The microfluidic experiments are complemented by numerical flow simulations. Both visualize unsteady flow, small eddies, and recirculation bubbles behind the natural dermal denticles. |
format |
Article in Journal/Newspaper |
author |
Katrine Feld Anne Noer Kolborg Camilla Marie Nyborg Mirko Salewski John Fleng Steffensen Kirstine Berg-Sørensen |
author_facet |
Katrine Feld Anne Noer Kolborg Camilla Marie Nyborg Mirko Salewski John Fleng Steffensen Kirstine Berg-Sørensen |
author_sort |
Katrine Feld |
title |
Dermal Denticles of Three Slowly Swimming Shark Species: Microscopy and Flow Visualization |
title_short |
Dermal Denticles of Three Slowly Swimming Shark Species: Microscopy and Flow Visualization |
title_full |
Dermal Denticles of Three Slowly Swimming Shark Species: Microscopy and Flow Visualization |
title_fullStr |
Dermal Denticles of Three Slowly Swimming Shark Species: Microscopy and Flow Visualization |
title_full_unstemmed |
Dermal Denticles of Three Slowly Swimming Shark Species: Microscopy and Flow Visualization |
title_sort |
dermal denticles of three slowly swimming shark species: microscopy and flow visualization |
publisher |
MDPI AG |
publishDate |
2019 |
url |
https://doi.org/10.3390/biomimetics4020038 https://doaj.org/article/8a877afd006d4b3880d84c0ec705e507 |
long_lat |
ENVELOPE(-58.515,-58.515,-63.717,-63.717) |
geographic |
Greenland Canicula |
geographic_facet |
Greenland Canicula |
genre |
Greenland spiny dogfish Squalus acanthias |
genre_facet |
Greenland spiny dogfish Squalus acanthias |
op_source |
Biomimetics, Vol 4, Iss 2, p 38 (2019) |
op_relation |
https://www.mdpi.com/2313-7673/4/2/38 https://doaj.org/toc/2313-7673 2313-7673 doi:10.3390/biomimetics4020038 https://doaj.org/article/8a877afd006d4b3880d84c0ec705e507 |
op_doi |
https://doi.org/10.3390/biomimetics4020038 |
container_title |
Biomimetics |
container_volume |
4 |
container_issue |
2 |
container_start_page |
38 |
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1766018928788635648 |