Influence of the Concentration of Fe and Cu Nanoparticles on the Dynamics of the Size Distribution of Nanoparticles

Frontiers in Physics

Mikhail Yu Volkov¹  Ilya V. Baimler²  Veronika V. Smirnova²  Sergey V. Gudkov²  Oleg V. Uvarov²  Anastasia A. Semenova³  Andrey B. Lisitsyn³ 

[1] MIREA - Russian Technological University, Moscow, Russia;Prokhorov General Physics Institute of the Russian Academy of Sciences, Moscow, Russia;V.M. Gorbatov Federal Research Center for Food Systems of Russian Academy of Sciences, Moscow, Russia;

关键词: laser radiation;    nanoparticles;    particle distribution;    laser ablation;    agglomeration;   

DOI  :  10.3389/fphy.2020.622551

来源: DOAJ

【 摘 要 】

The evolution of the size distribution of nanoparticles depending on the concentration of nanoparticles in a colloidal solution is investigated. The formation of new stable distributions shifted relative to the initial distribution is directly related to the processes of agglomeration of nanoparticles. Using successive two-fold dilutions of nanoparticles by 2–32 times, it was shown that the maximum of the nanoparticle size distribution shifts toward smaller sizes with a decrease in the concentration of nanoparticles, both for distributions by the number of nanoparticles and for distributions by mass of nanoparticles. Thus, with dilutions, the relative concentration of individual nanoparticles increases, while the number of particles in one aggregate decreases. A mathematical model has been created that predicts a change in distribution with a change in the concentration of nanoparticles in a colloid.

【 授权许可】

Unknown