1. High-resolution Raman microscopy of curled carbon nanotubes
- Author
-
Vladimir V. Tsukruk, Olaf Hollricher, Andrea Jauss, Hyunhyub Ko, Yuri Pikus, and Chaoyang Jiang
- Subjects
Nanotube ,Materials science ,Physics and Astronomy (miscellaneous) ,Bent molecular geometry ,Analytical chemistry ,Mechanical properties of carbon nanotubes ,Carbon nanotube ,Condensed Matter::Mesoscopic Systems and Quantum Hall Effect ,law.invention ,Optical properties of carbon nanotubes ,Condensed Matter::Materials Science ,symbols.namesake ,law ,Microscopy ,symbols ,Composite material ,Spectroscopy ,Raman spectroscopy - Abstract
Patterned carbon nanotube assemblies with bent nanotube bundles were investigated with combined atomic force microscopy and confocal Raman imaging spectroscopy to identify conditions of carbon nanotubes in the bent state. We showed that the tangential G mode on Raman spectra systematically shifts downward upon nanotube bending as was predicted earlier. This lower frequency shift is attributed to the tensile stress, which results in the loosening of C–C bonds in the outer nanotube walls.
- Published
- 2004