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|Title:||Time Evolution of the Aggregate Fractal Dimension from Langevin Dynamics|
|Authors:||ISELLA Lorenzo; DROSSINOS Ioannis|
|Citation:||Proceedings of the European Aerosol Conference 2008 p. T03A005O|
|Publisher:||Hellenic Association for Aerosol Research|
|Type:||Articles in periodicals and books|
|Abstract:||Combustion-generated solid nanoparticles are often fractal-like aggregates (clusters) of smaller units taken to be spherical primary particles, monomers. The aggregate mass exhibits a power-law dependence on a characteristic size, usually identified with the radius of gyration. The power-law exponent is the aggregate fractal dimension. We investigate the non-equilibrium Brownian particle dynamics by solving the Langevin equations for a system of interacting aggregates in three dimensions. Our objective is to study the time evolution of the aggregate fractal dimension as an indicator of the varying aggregate morphology.|
|JRC Institute:||Institute for Environment and Sustainability|
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