Eger, Carmen ; Horstmann, Martin ; Poppinga, Simon ; Sachse, Renate ; Thierer, Rebeccca ; Nestle, Nico ; Bruchmann, Bernd ; Speck, Thomas ; Rühe, Jürgen (2022)
The structural and mechanical basis for passive-hydraulic pine cone actuation.
In: Advanced Science, 9 (20)
doi: 10.1002/advs.202200458
Artikel, Bibliographie
Dies ist die neueste Version dieses Eintrags.
Kurzbeschreibung (Abstract)
The opening and closing of pine cones is based on the hygroscopic behavior of the individual seed scales around the cone axis, which bend passively in response to changes in environmental humidity. Although prior studies suggest a bilayer architecture consisting of lower actuating (swellable) sclereid and upper restrictive (non- or lesser swellable) sclerenchymatous fiber tissue layers to be the structural basis of this behavior, the exact mechanism of how humidity changes are translated into global movement are still unclear. Here, the mechanical and hydraulic properties of each structural component of the scale are investigated to get a holistic picture of their functional interplay. Measurements of the wetting behavior, water uptake, and mechanical measurements are used to analyze the influence of hydration on the different tissues of the cone scales. Furthermore, their dimensional changes during actuation are measured by comparative micro-computed tomography (µ-CT) investigations of dry and wet scales, which are corroborated and extended by 3D-digital image correlation-based displacement and strain analyses, biomechanical testing of actuation force, and finite element simulations. Altogether, a model allowing a detailed mechanistic understanding of pine cone actuation is developed, which is a prime concept generator for the development of biomimetic hygromorphic systems.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2022 |
| Autor(en): | Eger, Carmen ; Horstmann, Martin ; Poppinga, Simon ; Sachse, Renate ; Thierer, Rebeccca ; Nestle, Nico ; Bruchmann, Bernd ; Speck, Thomas ; Rühe, Jürgen |
| Art des Eintrags: | Bibliographie |
| Titel: | The structural and mechanical basis for passive-hydraulic pine cone actuation |
| Sprache: | Englisch |
| Publikationsjahr: | 20 September 2022 |
| Verlag: | Wiley-VCH |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Advanced Science |
| Jahrgang/Volume einer Zeitschrift: | 9 |
| (Heft-)Nummer: | 20 |
| DOI: | 10.1002/advs.202200458 |
| URL / URN: | https://onlinelibrary.wiley.com/doi/full/10.1002/advs.202200... |
| Zugehörige Links: | |
| Kurzbeschreibung (Abstract): | The opening and closing of pine cones is based on the hygroscopic behavior of the individual seed scales around the cone axis, which bend passively in response to changes in environmental humidity. Although prior studies suggest a bilayer architecture consisting of lower actuating (swellable) sclereid and upper restrictive (non- or lesser swellable) sclerenchymatous fiber tissue layers to be the structural basis of this behavior, the exact mechanism of how humidity changes are translated into global movement are still unclear. Here, the mechanical and hydraulic properties of each structural component of the scale are investigated to get a holistic picture of their functional interplay. Measurements of the wetting behavior, water uptake, and mechanical measurements are used to analyze the influence of hydration on the different tissues of the cone scales. Furthermore, their dimensional changes during actuation are measured by comparative micro-computed tomography (µ-CT) investigations of dry and wet scales, which are corroborated and extended by 3D-digital image correlation-based displacement and strain analyses, biomechanical testing of actuation force, and finite element simulations. Altogether, a model allowing a detailed mechanistic understanding of pine cone actuation is developed, which is a prime concept generator for the development of biomimetic hygromorphic systems. |
| Freie Schlagworte: | μ-CT scans, finite element simulation, hydration measurement, kinemati-cal and structural analysis, model for water absorption, pine cone move-ment, tissue mechanic |
| Zusätzliche Informationen: | Artikel-ID: 2200458 |
| Fachbereich(e)/-gebiet(e): | 10 Fachbereich Biologie 10 Fachbereich Biologie > Botanischer Garten |
| Hinterlegungsdatum: | 21 Sep 2022 05:16 |
| Letzte Änderung: | 03 Jul 2024 02:58 |
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| Suche nach Titel in: | TUfind oder in Google |
Verfügbare Versionen dieses Eintrags
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The Structural and Mechanical Basis for Passive‐Hydraulic Pine Cone Actuation. (deposited 07 Okt 2022 13:21)
- The structural and mechanical basis for passive-hydraulic pine cone actuation. (deposited 21 Sep 2022 05:16) [Gegenwärtig angezeigt]
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