Self-assembly of carbon nanohelices: Characteristics and field electron emission properties

Zhang, Guangyu; Jiang, Xin; Wang, Enge
April 2004
Applied Physics Letters;4/5/2004, Vol. 84 Issue 14, p2646
Academic Journal
We report the synthesis of self-assembled carbon nanohelices on iron needles using microwave plasma assisted chemical vapor deposition. The catalytic growth can be explained by the vapor–liquid–solid theory. Their morphologies and microstructures are investigated by scanning electron microscopy, high-resolution transmission electron microscopy, nanobeam diffraction, and Raman spectroscopy. The field-emission investigations show a rather low turn-on electrical field and high emission current. © 2004 American Institute of Physics.


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