Variability and Self-Organization in Nanosystems

被引:0
作者
I.V. Melikhov
V.E. Bozhevol'nov
机构
[1] Moscow State University,Chemistry Department
来源
Journal of Nanoparticle Research | 2003年 / 5卷
关键词
nanoparticles; fluctuations; growth rate; aggregation; self-assembly; nanostructure; Fokker–Plank equation;
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学科分类号
摘要
In supersaturated media nanoparticles grow with fluctuating rate. On a surface of growing nanoparticles a mechanism of synchronization of molecular fluctuations operates increasing their scale up to macroscopic one. Thereof the kinetic equation for states distribution function of nanoparticles approaches the Fokker–Planck equation that is experimentally established on an example of nanoparticles of different nature. In a series of suspensions and aerosols, where the ordered aggregates of nanoparticles are formed, aggregation is multistage process, and at each stage the change of a size distribution function of aggregates is also described by the Fokker–Planck equation. Multistage aggregation is completed by appearance of the particles in system with multilevel hierarchical texture having tendency to accept polyhedral shape. Aforementioned features of nanosystems can be treated as development of variability and ability of systems to self-organization.
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页码:465 / 472
页数:7
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