Orthogonal self-assembly of carbon nanotube crossbar architectures by simultaneous graphoepitaxy and field-directed growth.
Crossbar arrays of single-wall carbon nanotubes are produced spontaneously in a single step of chemical vapor deposition by simultaneous graphoepitaxy along faceted nanosteps and field-directed growth, perpendicular to each other. The two alignment mechanisms take place selectively on miscut C-plane sapphire and patterned amorphous SiO2 islands, respectively, without mutual interference, producing dense nanotube grids, with up to 12 junctions per square micrometer. This one-step method of orthogonal self-assembly may open up new possibilities for nanotube circuit integration.
Ismach
Ariel
A
Department of Materials and Interfaces, Weizmann Institute of Science, Rehovot 76100, Israel.
Joselevich
Ernesto
E
D016880:Anisotropy; D003460:Crystallization / Q000379:methods*; D006108:Graphite / Q000032:analysis / Q000737:chemistry*; D008422:Materials Testing; D008968:Molecular Conformation; D037742:Nanotubes, Carbon / Q000032:analysis / Q000737:chemistry* / Q000648:ultrastructure*; D010316:Particle Size; D044367:Phase Transition; D012822:Silicon Dioxide / Q000737:chemistry
D037742:Nanotubes, Carbon; D012822:Silicon Dioxide; D006108:Graphite