Formation and Growth of Nanowire

TL;DR

This paper investigates the physical processes and kinetics involved in the vapor-liquid-solid growth of nanowires, providing theoretical models and numerical results, especially for carbon nanowires on nickel catalysts.

Contribution

It offers approximate expressions for nanowire length and evaluates the effects of thermodynamics, kinetics, and heat transfer on nanowire growth, including numerical analysis for carbon nanowires.

Findings

Derived expressions for nanowire length in one-dimensional approximation

Assessed the influence of gas phase transfer processes on growth

Numerical results for carbon nanowires on Ni catalysts

Abstract

The kinetics of main physical processes controlling the growth of nanowires (NW) via evolution pass " vapor-liquid-solid" is considered. The roles of the thermodynamics and kinetics of cluster nucleation in the initial stage of NW formation are studied. Approximate expressions for NW length are obtained in one-dimensional approximation. The influence of transfer processes in the gas phase on the growth NW is evaluated. The effect of release of the latent heat of phase transition and heat conduction along NW is considered. For carbon NW, grown on Ni catalytic particles, numerical results are obtained. PACS: 64.70Dv, 68.70+w.