The mechanical deformation and dynamics properties of single wall carbon nanotube heterojunctions (HJ) oscillators are investigated using an hybrid finite element atomistic-continuum approach. The nanotube HJs provide a peculiar deformation pattern, with combined bending and axial stretching of carbon nanotubes (CNTs), and a broad agreement of their axial stiffness with spring series continuum mechanics and existing molecular dynamics (MD) simulations. We show also peculiar distributions of the natural frequencies and modes of the hetero-junctions compared to classical single-wall nanotube configurations, and the mass-sensor capability of (5,5)-(10,10) SWCNT HJ structures, with frequency shifts highly depending on the heterojunction section subjected to the mass loading.
|Translated title of the contribution||Carbon nanotube hetero-junctions: unusual deformations and mechanical vibration properties|
|Title of host publication||Conference on Nanosensors, Biosensors, and Info-Tech Sensors and Systems 2011, San Diego, CA|
|Publication status||Published - 2011|
Bibliographical noteConference Proceedings/Title of Journal: Proceedings of SPIE
Conference Organiser: SPIE
Other identifier: Article 798006