Rayleigh instability induced SiC/SiO2 necklace like nanostructures

SiC@SiO2 nanocables (NCs) were annealed under a nitrogen flow at 1400 degrees C. Structural and chemical characterization by SEM, HRTEM, EDX, and XRD show that the heat treatment led to the dewetting of SiO2 and the formation of SiC/SiO2 pearl necklace-like nanostructures (NSs). The dewetting mechanism has been attributed mainly to the Rayleigh instability. These NSs could have a wide range of applications in different fields such as nanocomposites, electronics, sensors, drug release, and light emitting diodes.