Energy exchanges in carbon nanotube oscillators

• Main Authors: Zhao, Yang, Ma, Chi Chiu, Wong, Lai Ho, Chen, Guan Hua, Xu, Zhiping, Zheng, Quan Shui, Jiang, Qing, Chwang, Allen T.
• Other Authors: School of Materials Science & Engineering
• Format: Article
• Language: English
• Published: 2011
• Subjects: DRNTU::Engineering::Materials::Nanostructured materials
• Online Access: https://hdl.handle.net/10356/93826; http://hdl.handle.net/10220/6779
• Institution: Nanyang Technological University

Energy exchanges between orderly intertube axial motion and vibrational modes are studied for isolated systems of two coaxial carbon nanotubes at temperatures ranging from 300 to 500 K. It is found that the excess intertube van der Waals energy, depleted from the intertube axial motion, is primarily stored in low-frequency mechanical modes of the oscillator for an extended period of time. This constitutes the first computer simulation of a nanomechanical device that exhibits negative friction.