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Article Dans Une Revue Journal of Physical Chemistry C Année : 2013

Temperature-Induced Structural Transitions on Hybrid Nanothick Metal/Polymer Assemblies

Résumé

Performance of nanothick metal/polymer assemblies crucially depends on the internal structure of the metal–polymer assemblies. As only a combination of high sensitive techniques is able to access the fine structure changes, combined X-ray reflectivity (XRR) and electrical AFM analysis are proposed. This combination of techniques is used to follow the fine evolution of the nanostructure of an ultrathin gold layer (10 nm) deposited on a polystyrene thin film (30 nm) as a function of the metal deposition temperature (from Td = −40 to 220 °C). Nanothick metal/polymer assemblies are prepared by evaporating ultrathin gold layer (<10 nm) onto spin-coated polystyrene thin film (h < 40 nm). Surface roughness evolution with increasing deposition temperature studied by atomic force microscopy (AFM) clearly shows a maximum corresponding to the expected glass transition temperature of the polystyrene film. X-ray reflectivity (XRR) measurements are used to follow the progressive embedment of the gold particles into the polymer film when the deposition temperature increases above the Tg of the polymer film. Consequences of the structural evolution of the assembly are then emphasized by measuring with an AFM the increase of surface electrical resistivity of the assembly when the gold embedment is progressing.
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Dates et versions

hal-02354049 , version 1 (07-11-2019)

Identifiants

Citer

D. Siniscalco, Jean-François Bardeau, M. Edely, A. Gourbil, N. Delorme. Temperature-Induced Structural Transitions on Hybrid Nanothick Metal/Polymer Assemblies. Journal of Physical Chemistry C, 2013, 117 (14), pp.7391-7397. ⟨10.1021/jp401107s⟩. ⟨hal-02354049⟩
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