SiC/SiO2 core–shell nanocables formed on the carbon fiber felt

SiC/SiO2 core–shell nanocables in high yield and high purity were synthesized on carbon fiber felt by a simple thermal evaporation method without the presence of the catalyst. The microstructures and compositions of the samples were studied by SEM, TEM, HRTEM, EDS and SAED. The as-prepared nanocables with diameter of 10–40 nm have a crystalline SiC core and an amorphous shell of SiO2. This composite nanostructure will provide opportunities for both fundamental research and technological applications in electronic nanodevices.