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TU Dresden » Faculty of Mechanical Science and Engineering » Institute for Materials Science » Chair of Materials Science and Nanotechnology

» presentations   » 2011.09.12

Transport Properties of Boron Nanotubes

V. Bezugly, J. Kunstmann, G. Cuniberti

17th International Symposium on Boron, Borides and Related Materials,

2011.09.12; Istanbul, Turkey

The prediction of the existence of stable, quasi-planar and tubular clusters of elementalboron, which was later confirmed experimentally [2], has stimulated the search for boron nanostructures analogous to graphene and carbon nanotubes. The existence of pure boron nanotubes (BNTs) of different underlying lattice structures has been proposed, and the first experiments on the synthesis and characterization of BNTs have been performed.
BNTs are predicted to have a metallic conductivity independent of their diameter and chiral angle, in contrast to the well-studied carbon nanotubes. This property makes BNTs good candidates for nanometer-scale conducting elements of future electronic devices. Recent experimental work on BNTs has provided the first evidence for their metallic behavior. Nevertheless, there are still many open questions on the physical properties of BNTs which need to be answered on both the theoretical and experimental sides.
In our work we theoretically investigate the electronic structure and transport properties of large-diameter BNTs of different structures and chiralities. Our results are in agreement with recent experimental findings, and a method to control the electron transport in BNTs is proposed.

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Prof. Dr. Gianaurelio Cuniberti
Ms Sylvi Katzarow
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