Determination of the melt level from a real weight signal during computer-assisted crystal growth by the Stepanov (EFG) technique and the use of crucible motion as a control action

The current melt level is determined from a real weight signal during computer-assisted crystal growth by the Stepanov technique. No knowledge of the real shape of growing crystals is necessary in this case. A numerical solution to the capillary Laplace equation is used to analyze the use of the motion of a crucible with a melt as a control action that affects the shapes of menisci and growing crystals.