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Calculation of nanoparticle surface shape instability development

机译：纳米颗粒表面形状不稳定性发展的计算

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The aim of this work is the theoretical investigation of instability development of the nanoparticle surface shape during diffuse growth. The unperturbed surface is considered as an ideal sphere. The mass diffusion flux promotes increase of the sphere volume and development of free surface perturbations. The relaxation of these perturbations due to action of capillary forces is also considered along with development of small perturbations of a free surface at the expense of perturbation of a mass diffusion flux. We use the effective coefficient of viscosity μ and surface tension coefficient a of nanoparticle to describe a surface shape relaxation. As a result there were revealed various modes at which the surface of nanoparticle loses the stability and investigated dynamics of instability development of surface.
机译：这项工作的目的是理论研究扩散生长过程中纳米粒子表面形状的不稳定性。不受干扰的表面被认为是理想的球体。质量扩散通量促进球体体积的增加和自由表面扰动的发展。还考虑了由于毛细管力的作用而引起的这些扰动的松弛以及自由表面的小扰动的发展，但以质量扩散通量的扰动为代价。我们使用纳米粒子的有效粘度系数μ和表面张力系数a来描述表面形状弛豫。结果，揭示了纳米颗粒表面失去稳定性的各种模式，并研究了表面不稳定性发展的动力学。

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