Vibration of ZnO nanotubes: a molecular mechanics approach

Chowdhury R, S Adhikari, FL Scarpa

Research output: Contribution to journalArticle (Academic Journal)peer-review

26 Citations (Scopus)

Abstract

We investigate the vibrational properties of two kinds of single-wall ZnO nanotubes. The simulations are carried out for three types of zigzag nanotubes (5,0), (8,0), (10,0) and armchair nanotubes (3,3), (4,4), (6,6). The natural frequencies are determined by means of the molecular mechanics approach with the universal force field potential. The first four natural frequencies are obtained for length/diameter ratio of about 5–20. The vibration modes associated with these frequencies have been computed. Closed-form analytical expressions have been derived using the continuum shell theory for the physical explanations of the simulations results. We observe that the natural frequencies decrease as the aspect ratios increase. The results follow similar trends with results of previous studies for carbon nanotubes (CNT). However, the magnitudes of the frequencies are lower from the corresponding CNT counterparts, indicating that ZnO nanotubes are comparatively less stiff
Translated title of the contributionVibration of ZnO nanotubes: a molecular mechanics approach
Original languageEnglish
Pages (from-to)301 - 308
JournalApplied Physics A: Materials Science and Processing
Volume102
DOIs
Publication statusPublished - Feb 2011

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