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Nano
pine trees
When
a nanowire grows with a twisted rather than straight crystal structure,
it forms a nano-size pine tree structure. The dislocation of the atoms along
the nanowire causes branches to sprout in a spiral staircase pattern. Until
now such structures have required metal nanoparticles as catalysts. The
branched nanowires could be used to make optical and electronic devices.Research paper:
Dislocation-Driven Nanowire Growth and Eshelby Twist
Science, published online May 1, 2008
Researcher's homepage:
Song Jin
Related stories and briefs:
Scientists brew tree-shaped DNA
Templates yield nano branches
Nanotubes branch out
Back to TRN May 12/19, 2008
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