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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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Van Loock, Frederik
Eindhoven University of Technology
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (15/15 displayed)
- 2024Experimental investigation of yield and hysteresis behaviour of an epoxy resin under cyclic compression in the large deformation regimecitations
- 2024A monolithic numerical model to predict the EMI shielding performance of lossy dielectric polymer nanocomposite shields in a rectangular waveguidecitations
- 2023Micro- and Nano-Mechanical Characterisation and Modelling of the Local Matrix Deformation in Fibrereinforced Epoxy
- 2023Accurate determination of stiffness and strength of graphene via AFM-based membrane deflectioncitations
- 2021Visco-Plastic Behaviour of a Polymer Matrix at the Fibre Diameter Length Scale: a Finite Element Mesoscale Model Relying on Shear Transformation Zone (STZ) Dynamics
- 2021Nanomechanics serving polymer-based composite researchcitations
- 2021Thermal ageing of electronic component solder joints for space applications
- 2021Implementation and calibration of a mesoscale model for amorphous plasticity based on shear transformation dynamicscitations
- 2020Processing maps based on polymerization modelling of thick methacrylic laminatescitations
- 2020Processing maps based on polymerization modelling of thick methacrylic laminatescitations
- 2019Deformation and fracture of PMMA with application to nanofoaming and adhesive joints
- 2019Tensile fracture of an adhesive jointcitations
- 2019The mechanics of solid-state nanofoamingcitations
- 2019The mechanics of solid-state nanofoaming.
- 2019Mechanical Properties of PMMA-Sepiolite Nanocellular Materials with a Bimodal Cellular Structurecitations
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article
Accurate determination of stiffness and strength of graphene via AFM-based membrane deflection
Abstract
<p>The Young’s modulus and fracture strength of single and bilayer graphene (BLGr) grown by chemical vapour deposition (CVD) were determined using atomic force microscopy-based membrane deflection experiments. The uncertainty resulting from instrument calibration and the errors due to the experimental conditions like tip wear, loading position, and sample preparation were investigated to estimate the accuracy of the method. The theoretical estimation of the uncertainty on the Young’s modulus linked to the calibration is around 16%. Finite element simulations were performed to determine the effects of membrane shape and loading position on the extraction of the Young’s modulus. Off-centre loading results in the overestimation of the Young’s modulus while deviation from the circular shape leads to an underestimation of the stiffness. The simulated results were compared with experiments. With all these sources of errors taken into account, the Young’s modulus and fracture strength of CVD-grown single layer graphene are found equal to 0.88 ± 0.14 TPa and 134 ± 16 GPa, respectively. For CVD BLGr, the mean values of the Young’s modulus and fracture strength are equal to 0.70 ± 0.11 TPa and 95 ± 11 GPa, respectively.</p>