Open Access Nano Express

Tunable self-assembly of one-dimensional nanostructures with orthogonal directions

Milan P Allan, Simon Berner, Martina Corso, Thomas Greber and Jürg Osterwalder*

Author Affiliations

Physik-Institut, Universität Zürich, Winterthurerstrasse 190, 8057, Zurich, Switzerland

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Nanoscale Research Letters 2007, 2:94-99  doi:10.1007/s11671-006-9036-2

Published: 26 January 2007

Abstract

High-temperature exposure of a Mo(110) surface to borazine (HBNH)3leads to the formation of two distinctly different self-assembling nanostructures. Depending on the substrate temperature during preparation, either well-aligned, ultra-thin boron nanowires or a single-layer stripe structure of hexagonal boron nitride forms. Both structures show one-dimensional (1D) characteristics, but in directions perpendicular to each other. It is also possible to grow the two phases in coexistence. The relative weights are controlled by the sample temperature during preparation.

Keywords:
Hexagonal boron nitride (h-BN); Boron; One-dimensional nanostructures; Nanowire; Photoemission; Scanning tunneling microscopy (STM); Low energy electron diffraction (LEED)