Strain-induced D band observed in carbon nanotubes

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题名:	Strain-induced D band observed in carbon nanotubes
作者:	洪緯璿;Chang, Chia-Chi;Chen, Chun-Chung;Hung, Wei-Hsuan;Hsu, I. -Kai;Pimenta, Marcos A.;Cronin, Stephen B.
贡献者:	工學院材料科學與工程研究所
关键词:	Atomic/Molecular Structure and Spectra;Band spectra;Banded structure;Biomedicine;Biotechnology;Carbon;Chemistry and Materials Science;Condensed Matter Physics;Electrons;Emergence;Materials Science;Nanocomposites;Nanomaterials;Nanostructure;Nanotechnology;Nitrates;Raman spectra;Research Article;Strain
日期:	2012-01-01
上传时间:	2026-04-23 11:45:11 (UTC+8)
出版者:	Tsinghua University Press;Heidelberg: Tsinghua University Press
摘要:	摘要： We report the emergence of the D band Raman mode in single-walled carbon nanotubes under large axial strain. The D to G mode Raman intensity ratio ( I D / I G ) is observed to increase with strain quadratically by more than a factor of 100-fold. Up to 5% strain, all changes in the Raman spectra are reversible. The emergence of the D band, instead, arises from the reversible and elastic symmetry-lowering of the sp 2 bonds structure. Beyond 5%, we observe irreversible changes in the Raman spectra due to slippage of the nanotube from the underlying substrate, however, the D band intensity resumes its original pre-strain intensity, indicating that no permanent defects are formed. 其他題名： Nano Res 出版者： Heidelberg: Tsinghua University Press 出版日期： 2012-12-01 出處： Nano Research, 2012-12, Vol.5 (12), p.854-862 版權： Tsinghua University Press and Springer-Verlag Berlin Heidelberg 2012 識別號： ISSN: 1998-0124 識別號： EISSN: 1998-0000 識別號： DOI: 10.1007/s12274-012-0269-3
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