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Author  |
Clair, B.; Arinero, R.; Leveque, G.; Ramonda, M.; Thibaut, B. |
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Title |
Imaging the mechanical properties of wood cell wall layers by atomic force modulation microscopy |
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Journal Article |
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Year |
2003 |
Publication |
IAWA Journal |
Abbreviated Journal |
IAWA J. |
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Volume |
24 |
Issue |
3 |
Pages |
223-230 |
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Keywords |
wood; cell wall; mechanical properties; elastic modulus; tension wood |
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Abstract |
Atomic Force Microscopy in force modulation mode was used to study the elastic properties of the different fibre wall layers of the tension wood of holm oak and normal wood of boco. The method is based on the measurement of the resonance frequency of the microscope lever in contact with the sample. This frequency is related to the reduced Young modulus E* = E/(1-nu(2)) of the material, supposed to be isotropic. 'Elastic' images of the cell are obtained simultaneously with the topographic images, which allows the observation of the mechanical properties of the cells at a nanometric scale. Layers G, S-1, S-2 and ML can clearly be distinguished. By comparison with known materials an estimation of the absolute modulus is given in the range 5-20 GPa, but should be considered with caution, because the inherent anisotropy of the materials has not been taken into account. |
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Address |
Univ Montpellier 2, CNRS, UMR 5508, Lab Mecan & Genie Civil, F-34095 Montpellier, France |
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Publisher |
INT ASSOC WOOD ANATOMISTS |
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ISSN |
0928-1541 |
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Notes |
ISI:000185049700003 |
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no |
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Call Number |
EcoFoG @ eric.marcon @ |
Serial |
270 |
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