Nucleation and growth of nanoparticles in a plasma by laser ablation in liquid

被引:26
|
作者
Taccogna, Francesco [1 ]
机构
[1] CNR NanoTec, I-70126 Bari, Italy
关键词
ION COLLECTION; PARTICLE; MODEL; DUST;
D O I
10.1017/S0022377815000793
中图分类号
O35 [流体力学]; O53 [等离子体物理学];
学科分类号
070204 ; 080103 ; 080704 ;
摘要
Modelling the nucleation and growth of nanoparticles in liquid-phase laser ablation is very important to optimize and control the size and the structure of nanoparticles. However, the detailed formation process of nanoparticles after laser ablation is still unclear. In the present study we investigated for the first time the kinetic growth of nanoparticles synthesized by laser ablation in water, emphasizing the leading role of the plasma medium and in particular the electrostatic agglomeration due to the charging of the nanoparticle in the plasma plume. The importance of the confining role of the liquid medium on the plasma plume is revealed, showing how an isothermal expansion is able to produce smaller nanoparticles compared to an adiabatic cooling.
引用
收藏
页数:12
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