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Binormal Nanohelices

Published online by Cambridge University Press:  26 February 2011

Alexandre F. da Fonseca,
Douglas S. Galvao and
Coraci P. Malta
Alexandre F. da Fonseca
Affiliation:
afonseca@if.usp.br, University of Sao Paulo, Mathematical Physics
Douglas S. Galvao
Affiliation:
galvao@ifi.unicamp.br, State University of Campinas, Applied Physics, Brazil
Coraci P. Malta
Affiliation:
coraci@if.usp.br, University of Sao Paulo, Mathematical Physics, Brazil
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Abstract

Helical structures can be classified in accordance with the orientation of its cross-section with respect to the normal or binormal vectors. We investigate the geometric features of several nanosprings verifying the non-existence of normal nanohelices. In this work, using the VLS growth model, we explain not only the absence of normal nanosprings but also the growing process of binormal nanosprings. The dynamical stability of crystalline ZnO binormal nanohelices is also addressed.

Keywords

nanostructurestructuralelastic properties

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