Carbon nanotube heterojunctions: unusual deformations and mechanical vibration properties

F. Scarpa; J. Narojczyk; K. W. Wojciechowski; D. J. Inman

doi:10.1117/12.881914

29 March 2011 Carbon nanotube heterojunctions: unusual deformations and mechanical vibration properties

F. Scarpa, J. Narojczyk, K. W. Wojciechowski, D. J. Inman

Proceedings Volume 7980, Nanosensors, Biosensors, and Info-Tech Sensors and Systems 2011; 798006 (2011) https://doi.org/10.1117/12.881914
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2011, San Diego, California, United States

Abstract

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.

Citation Download Citation

F. Scarpa, J. Narojczyk, K. W. Wojciechowski, and D. J. Inman "Carbon nanotube heterojunctions: unusual deformations and mechanical vibration properties", Proc. SPIE 7980, Nanosensors, Biosensors, and Info-Tech Sensors and Systems 2011, 798006 (29 March 2011); https://doi.org/10.1117/12.881914

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