Abstract:
:Carbon forms one of nature's strongest chemical bonds; its allotropes having provided some of the most exciting scientific discoveries in recent times. The possibility of inter-allotropic transformations/hybridization of carbon is hence a topic of immense fundamental and technological interest. Such modifications usually require extreme conditions (high temperature, pressure and/or high-energy irradiations), and are usually not well controlled. Here we demonstrate inter-allotropic transformations/hybridizations of specific types that appear uniformly across large-area carbon networks, using moderate alternating voltage pulses. By controlling the pulse magnitude, small-diameter single-walled carbon nanotubes can be transformed predominantly into larger-diameter single-walled carbon nanotubes, multi-walled carbon nanotubes of different morphologies, multi-layered graphene nanoribbons or structures with sp(3) bonds. This re-engineering of carbon bonds evolves via a coalescence-induced reconfiguration of sp(2) hybridization, terminates with negligible introduction of defects and demonstrates remarkable reproducibility. This reflects a potential step forward for large-scale engineering of nanocarbon allotropes and their junctions.
journal_name
Nat Communjournal_title
Nature communicationsauthors
Jung HY,Araujo PT,Kim YL,Jung SM,Jia X,Hong S,Ahn CW,Kong J,Dresselhaus MS,Kar S,Jung YJdoi
10.1038/ncomms5941subject
Has Abstractpub_date
2014-09-15 00:00:00pages
4941issn
2041-1723pii
ncomms5941journal_volume
5pub_type
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