| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Zlotnikov, Igor
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (19/19 displayed)
- 2023In Situ Nanoindentation at Elevated Humiditiescitations
- 2020Natural hybrid silica/protein superstructure at atomic resolutioncitations
- 2019Morphological and textural evolution of the prismatic ultrastructure in mollusc shellscitations
- 2017Nano-scale modulus mapping of biological composite materials: Theory and practicecitations
- 2017Mesocrystalline calcium silicate hydrate : a bioinspired route toward elastic concrete materialscitations
- 2016Gas barrier properties of bio-inspired Laponite–LC polymer hybrid filmscitations
- 2016Inherent Role of Water in Damage Tolerance of the Prismatic Mineral–Organic Biocomposite in the Shell of Pinna Nobiliscitations
- 2015Micro- and nano-structural details of a spider's filter for substrate vibrationscitations
- 2015Characterizing moisture-dependent mechanical properties of organic materialscitations
- 2015Electron microscope analyses of the bio-silica basal spicule from the Monorhaphis chuni spongecitations
- 2015Eshelby Twist as a Possible Source of Lattice Rotation in a Perfectly Ordered Protein/Silica Structure Grown by a Simple Organismcitations
- 2014A spider's biological vibration filtercitations
- 2014A Perfectly Periodic Three-Dimensional Protein/Silica Mesoporous Structure Produced by an Organismcitations
- 2014Hierarchically Structured Vanadium Pentoxide-Polymer Hybrid Materialscitations
- 2014Composition and Mechanical Properties of a Protein/Silica Hybrid Material Forming the Micron-Thick Axial Filament in the Spicules of Marine Spongescitations
- 2014Mesoporous silica: a perfectly periodic three-dimensional protein/silica mesoporous structure produced by an organism (adv. Mater. 11/2014).citations
- 2014Nanostructure of Biogenic Calcite and Its Modification under Annealing: Study by High-Resolution X-ray Diffraction and Nanoindentationcitations
- 2014Self-similar mesostructure evolution of the growing mollusc shell reminiscent of thermodynamically driven grain growthcitations
- 2013Structural and mechanical properties of the arthropod cuticlecitations
Places of action
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article
Micro- and nano-structural details of a spider's filter for substrate vibrations
Abstract
<p>The metatarsal lyriform organ of the Central American wandering spider Cupiennius salei is its most sensitive vibration detector. It is able to sense a wide range of vibration stimuli over four orders of magnitude in frequency between at least as low as 0.1 Hz and several kilohertz. Transmission of the vibrations to the slit organ is controlled by a cuticular pad in front of it. While the mechanism of high-frequency stimulus transfer (above ca 40 Hz) is well understood and related to the viscoelastic properties of the pad's epicuticle, it is not yet clear how low-frequency stimuli (less than 40 Hz) are transmitted. Here, we study how the pad material affects the pad's mechanical properties and thus its role in the transfer of the stimulus, using a variety of experimental techniques, such as X-ray micro-computed tomography for three-dimensional imaging, X-ray scattering for structural analysis, and atomic force microscopy and scanning electron microscopy for surface imaging. The mechanical properties were investigated using scanning acoustic microscopy and nanoindentation. We show that large tarsal deflections cause large deformation in the distal highly hydrated part of the pad. Beyond this region, a sclerotized region serves as a supporting frame which resists the deformation and is displaced to push against the slits, with displacement values considerably scaled down to only a few micrometres. Unravelling the structural arrangement in such specialized structures may provide conceptual ideas for the design of new materials capable of controlling a technical sensor's specificity and selectivity, which is so typical of biological sensors.</p>