Dendritic Nanowire Growth Mediated by a Self-Assembled Catalyst


  • We acknowledge support of Northwestern University, the MRSEC program of the National Science Foundation (DMR-0076097) at the Materials Research Center of Northwestern University through seed funding and Central Facility support, and the NSF Spin Electronics Program ECS-0224210.


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Dendritic growth of multiply branched InAs nanowires (see Figure and cover) is initiated by the controlled introduction of a Mn precursor in the context of vapor–liquid–solid nanowire growth by chemical vapor deposition. Self-assembly of Mn clusters leads to the nucleation and epitaxial growth of Mn-terminated InAs branches. The results provide a new route to the formation of hierarchical nanowire structures for nanoscale electronics and photonics.