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Nanomechanical properties of molecular organic thin films
Caro, J.; Fraxedas i Calduch, Jordi; Gorostiza Langa, Pablo Ignacio; Sanz Carrasco, Fausto
Universitat de Barcelona
Using atomic force microscopy we have studied the nanomechanical response to nanoindentations of surfaces of highly oriented molecular organic thin films (thickness¿1000¿nm). The Young¿s modulus E can be estimated from the elastic deformation using Hertzian mechanics. For the quasi-one-dimensional metal tetrathiafulvalene tetracyanoquinodimethane E~20¿GPa and for the ¿ phase of the p-nitrophenyl nitronyl nitroxide radical E~2GPa. Above a few GPa, the surfaces deform plastically as evidenced by discrete discontinuities in the indentation curves associated to molecular layers being expelled by the penetrating tip.
08-05-2012
Pel·lícules fines
Microscòpia de força atòmica
Elasticitat
Nanotecnologia
Cristalls
Thin films
Atomic force microscopy
Elasticity
Nanotechnology
Crystals
(c) American Institute of Physics 2001
Artículo
American Institute of Physics
         

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