Generation of multi-hollow crystalline Mo fibres

摘要

Flower-like micrometer-sized crystalline Mo fibres have been prepared by directly heating Mo powder on Mo foil, under Ar atmosphere. ED, EDX, SEM and HRTEM studies reveal that each fibre consists of a single Mo crystal containing multi-hollow cores. A one-dimensional growth mechanism, on the basis of the one-dimensional thermal flow during fibre formation, is discussed.