Selective excitations of trasverse vibrational modes of a carbon nanotube through a 'shuttle-like' electromechanical instability

Autor:	Santandrea, Fabio
Rok vydání:	2009
Předmět:	Condensed Matter - Mesoscale and Nanoscale Physics
Zdroj:	Physics Research International 2010, 493478, 2010
Druh dokumentu:	Working Paper
DOI:	10.1155/2010/493478
Popis:	We study the dynamics of transverse oscillations of a suspended carbon nanotube into which current is injected from the tip of a scanning tunneling microscope (STM). In this case the correlations between the displacement of the nanotube and its charge state, determined by the position-dependent electron tunneling rate, can lead to a "shuttle-like" instability for the transverse vibrational modes. We find that selective excitation of a specific mode can be achieved by an accurate positioning of the STM tip. This result suggests a feasible way to control the dynamics of this nano-electromechanical system (NEMS) based on the "shuttle instability". Comment: revised version, 5 pages, 3 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/0902.4184 Zobrazit plný text záznamu View this record from Arxiv