An axis- symmetric 2D description of a single crystal micro fiber growth process from the melt, by micro-pulling-down method.Part.1

  • Agneta M. Balint
  • Stefan Balint
  • Loredana Tanasie

Abstract

In this paper, the first part of an axis-symmetric 2D description of a single crystal micro fiber growth process by micro-pulling--down ($\mu$-PD) method is presented. The description concerns the following aspects: the free-surface equation and the pressure difference across the free surface (section 2.); limits of the pressure difference $p$ across the free surface (section 3.); the fiber radius change rate, due to the change of the pressure difference p across the free surface ,and the fiber radius size control (section 4), static stability of the free surface(section 5.).The above aspects are illustrated numerically in the case of the growth of a Si (silicon) microfiber of radius equal to $0.0001\,[m]$. The advantage of this description is that it helps to better understand the dependence of the meniscus free surface shape and size on the pressure difference across the meniscus free surface and may help the automation of manufacturing.

Published
2019-11-21