Abstract
The formation of platinum nano-particles on a polyethylene substrate is investigated bymolecular dynamics simulation. As initial configuration, a polymer film is put incontact with a supersaturated platinum vapour. Argon is added in the vapourphase as carrier gas that transfers heat from the vapour phase to the polymersurface. The simulations provide a deep insight into cluster formation at the atomiclevel. The presence of the polymer affects cluster growth significantly. Surfacegrowth and agglomeration are limited by the polymer matrix. The influence ofsupersaturation on the cluster size distribution is also different to the particle formation inthe gas phase. In addition, the structure of the polymer substrate is modifiedduring the embedding of platinum. These effects are analysed and compared toexperimental investigations of the formation of metal–polymer composites. The resultingdistribution of metal clusters on the surface and inside the polymer is in generalagreement with available experimental results of similar polymer–metal systems.
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