Abstract
Over 1.0 mm boron nitride nanotubes (BNNTs) were successfully synthesized by an optimized ball milling and annealing method. The annealing temperature of 1100 °C is crucial for the growth of the long BNNTs because at this temperature there is a fast nitrogen dissolution rate in Fe and the B/N ratio in Fe is 1. Such long BNNTs enable a reliable single tube configuration for electrical property characterization and consequently the average resistivity of the long BNNTs is determined to be 7.1 ± 0.9 × 104 Ω cm. Therefore, these BNNTs are promising insulators for three dimensional microelectromechanical system.
| Original language | English |
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| Pages (from-to) | 130-133 |
| Number of pages | 4 |
| Journal | Chemical Physics Letters |
| Volume | 463 |
| Issue number | 1-3 |
| DOIs | |
| Publication status | Published - 22 Sept 2008 |