Nonlinear optical vibrations of single-walled carbon nanotubes.

Optical Spectroscopy of Single-Walled Carbon Nanotubes

Coherent lattice vibrations in single-walled carbon nanotubes.

We have generated and detected coherent lattice vibrations in single-walled carbon nanotubes corresponding to the radial breathing mode (RBM) using ultrashort laser pulses. Because the band gap is a function of diameter, these RBM-induced diameter oscillations cause ultrafast band gap oscillations, thereby modulating the interband excitonic resonances at the phonon frequencies (3-9 THz). Excita...

Analysis of Nonlinear Vibrations for Multi-walled Carbon Nanotubes Embedded in an Elastic Medium

Nonlinear free vibration analysis of double-walled carbon nanotubes (DWCNTs) embedded in an elastic medium is studied in this paper based on classical (local) Euler-Bernoulli beam theory. Using the averaging method, the nonlinear free vibration responses of DWCNTs are obtained. The result is compared with the obtained results from the harmonic balance method for single-walled carbon nanotubes (...

Single - Walled 4 . Single - Walled Carbon Nanotubes

Single-walled carbon nanotubes (SWCNTs) are hollow, long cylinders with extremely large aspect ratios, made of one atomic sheet of carbon atoms in a honeycomb lattice. They possess extraordinary thermal, mechanical, and electrical properties and are considered as one of the most promising nanomaterials for applications and basic research. This chapter describes the structural, electronic, vibra...

Theory of Optical Processes in Single-Walled Carbon Nanotubes

Carbon nanotubes exhibit a variety of unique electrical, mechanical, magnetic, and optical properties that make them attractive for potential applications in nanotechnology. In this project the energy band structure of single-walled carbon nanotubes of arbitrary chirality is computed using a tight binding scheme that is generalized to include second nearest neighbor interactions. Plots of this ...