Synergetic chemical coupling controls the uniformity of carbon nanotube microstructure growth.

摘要: Control of the uniformity vertically aligned carbon nanotube structures (CNT “forests”), in terms both geometry and nanoscale morphology (density, diameter, alignment), is crucial for applications. Many studies report complex sometimes unexplained spatial variations height macroscopic CNT forests, as well among micropillars grown from lithographically patterned catalyst arrays. We present a model chemically coupled growth, which describes origins synergetic growth effects proximity. Via this model, we propose that CNTs locally enhanced by active species are catalytically produced at substrate-bound nanoparticles. The local concentration these modulates rate CNTs, spatially dependent manner driven diffusion generation/consumption sites. Through experiments numerical simulations, study how can be influ...