Recent Development of the Synthesis and Engineering Applications of One-Dimensional Boron Nitride Nanomaterials

Figure 2

High-resolution transmission electron microscope (HRTEM) images of BNNTs prepared by arc discharge and their tube ends [18]. (a) Six layers, (b) three layers, (c) two layers, (d) one layer, (e–g) flat tips of tubes with different diameters, (h) disordered termination of a single-walled tube, (i) conical ends, (j) tube end encapsulating probably amorphous BN material. Reprinted with permission of [18]. Copyright 1996 American Physical Society.

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