Abstract
One-dimensional boron nitride (BN) nanotube nanojunctions are of great interest for bothfundamental and applied research because of their stable and excellent mechanical andphysical properties. Large quantities of highly pure BN nanotube multiple Y- and/orT-junctions were synthesized by annealing pure boron nanowire precursors inN2 atmosphereat 1500 °C. Transmission electron microscopy and electron energy-loss spectroscopy studies revealthat the products possess a concentric tubular structure and stoichiometric BNcomposition. The boron nanostructured precursors react with nitrogen at hightemperature to form the corresponding BN components, retaining their originalmorphologies. A non-equilibrium interdiffusion of nitrogen and boron might beinvolved in the transformation process of the solid boron nanowires to hollow BNnanostructures. Our results illustrate the technological potential of BN nanoscale multiplejunctions being incorporated into future nanoscale mechanical and electronic devices.
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