Selective growth of CNTs

Selective growth of CNT

 The speed of CNT growth is highly dependent on the substrate materials and surface conditions in addition to the condition of the catalyst. Forming a different type of interim film or catalyst film with different patterns on the surface of a substrate allows for selective growth of different CNT patterns with different lengths on top of a desirable pattern.

Two kinds of lengths of VACNTs grown on a patterned Si substrate in one process