Single crystal fibers from inviscid melts

Growing single crystal fibers from inviscid melts... 

Whether the process for forming solid fibers (or ribbons) from inviscid melts is fast or slow, i.e., whether amorphous or single crystal fibers are formed, it proceeds through a transient viscous range. The inviscid melt will solidify as a glass fiber when a transient viscosity of log 2.5-log 3.0 is reached as required for formation of any fiber that is obtained from the liquid phase or melt [12]. 

Continuous single crystal fibers can be grown from inviscid melts by two relatively slow processes the edge defined film fed growth (EFG) process [13] and the laser heated float zone (LHFZ) or laser heated pedestal growth (LHPG) process [14]. Both offer growth rates of toO.3-0.7 mm/s [13-14]. 

---