Title :
Temperature Dependence of the Coherent Radial Breathing Mode Oscillations in Single Walled Carbon Nanotubes
Author :
Kim, Ji-Hee ; Han, Kang-Jeon ; Chang, Dong-Wook ; Kim, Nam-Je ; Yee, Ki-Ju ; Lim, Yong-Sik ; Haroz, Erik H. ; Kono, J.
Author_Institution :
Dept. of Phys., Chungnam Nat. Univ., Daejeon
Abstract :
We report on temperature dependence of the radial breathing mode(RBM) frequency and its decay time in single walled carbon nanotubes (SWCNTs), which were studied by the femtosecond pump and probe technique. With increasing temperature, we found out that the RBM frequency and phonon decay time shows on abnormal dramatic change around 70degC for a certain type of carbon nanotubes, which may be originated from the surfactant effect.
Keywords :
carbon nanotubes; high-speed optical techniques; oscillations; C; coherent radial breathing mode oscillations; femtosecond probe technique; femtosecond pump technique; phonon decay time; single walled carbon nanotubes; surfactant effect; temperature dependence; Carbon nanotubes; Frequency; Laser excitation; Lattices; Phonons; Pulse measurements; Temperature dependence; Temperature measurement; Time measurement; Vibration measurement;
Conference_Titel :
Lasers and Electro-Optics - Pacific Rim, 2007. CLEO/Pacific Rim 2007. Conference on
Conference_Location :
Seoul
Print_ISBN :
978-1-4244-1173-3
Electronic_ISBN :
978-1-4244-1174-0
DOI :
10.1109/CLEOPR.2007.4391778