Carbon nano-ribbons and their edge phonons

Well-defined carbon nano-ribbons with a honeycomb structure have been grown on a TiC (755) Surface. The width between two armchair edges is similar to 1.3 nm and the length is a macroscopic scale. The phonon modes and the electronic pi bands of the carbon nano-ribbons were quantized, which is a characteristic feature of the ribbons with nano-scale widths. Additionally, we have detected the transverse optical edge phonons, of which the vibrational amplitudes are localized at the armchair edge sites. (C) 2002 Elsevier Science Ltd. All rights reserved.