Variability of nanosystems

• Published in: Moscow University chemistry bulletin Vol. 64; no. 5; pp. 231 - 236
• Main Authors: Melikhov, I. V., Bozhevol’nov, V. E.
• Format: Journal Article
• Language: English
• Published: Heidelberg Allerton Press, Inc 01-10-2009
• Subjects: Chemistry; Chemistry and Materials Science; Chemistry/Food Science; self-assembly; growth rate; aggregation; nanoparticles; Fokker-Planck equation; fluctuations
• ISSN: 0027-1314; 1935-0260
• DOI: 10.3103/S0027131409050010

The mechanism of synchronization of molecular fluctuations operates on the surface of growing nanoparticles, increasing their scale up to macroscopic. The kinetic equation for the function of state distribution of nanoparticles therefore approaches the Fokker-Planck equation, which was established experimentally by the example of nanoparticles of different natures. In a number of suspensions and aerosols in which ordered aggregates of nanoparticles are formed, aggregation is a multistage process; at each stage, variation in the function of size distribution of the aggregates is also described by the Fokker-Planck equation. Multistage aggregation is completed when particles with multilevel hierarchical texture, which have a tendency to assume polyhedral form, appear in the system. The abovementioned features of nanosystems can be interpreted as indications of the variability and self-assembly ability of systems.