Chiral angle dependence of resonance window widths in (2n+m) families of single-walled carbon nanotubes

Ya-Ping Hsieh; Hofmann, Mario; Farhat, Hootan; Barros, Eduardo B.; Kalbac, Martin; Kong, Jing; Chi-Te Liang; Yang-Fang Chen; Dresselhaus, Mildred S.
March 2010
Applied Physics Letters;3/8/2010, Vol. 96 Issue 10, p103118
Academic Journal
Raman spectra of isolated single-walled carbon nanotubes (SWNTs) were obtained for a wide range of laser excitation energies to study the resonance excitation window of the radial breathing mode feature for members of (2n+m) families. A chiral angle (θ) dependence of the resonance window width (Γ) was observed, which is much stronger than the diameter dependence. The implications of this work on nanotube metrology are discussed.


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