Structural peculiarities of in situ deformation of a multi-walled BN nanotube inside a high-resolution analytical transmission electron microscope

Multi-cycle bending deformation of an individual boron nitride (BN) nanotube is performed inside a 300 kV high-resolution analytical transmission electron microscope (TEM) using a piezo-driven scanning tunneling microscope (STM)-TEM holder. Phenomenological peculiarities of the deformation are recorded under the detailed control of nanotube morphology, atomic structure, chemistry and electrical transport during all stages of deformation. Interestingly, it is found that the nanotube layers are very flexible in the vicinity of a relatively rigid nanotube fragment filled with BN matter and may withstand 20 or even more reverse bending cycles. At the same time, the filled part is gradually graphitized such that the normal to the BN graphitic layers is perpendicular to both the nanotube axis and the bending axis. (c) 2006 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

[1]  C. Zhi,et al.  Effective precursor for high yield synthesis of pure BN nanotubes , 2005 .

[2]  T. Ebbesen,et al.  Exceptionally high Young's modulus observed for individual carbon nanotubes , 1996, Nature.

[3]  J. Bernholc,et al.  Nanomechanics of carbon tubes: Instabilities beyond linear response. , 1996, Physical review letters.

[4]  A. Maiti.  Mechanical deformation in carbon nanotubes – bent tubes vs tubes pushed by atomically sharp tips , 2000 .

[5]  Charles M. Lieber,et al.  Nanobeam Mechanics: Elasticity, Strength, and Toughness of Nanorods and Nanotubes , 1997 .

[6]  Steven G. Louie,et al.  Boron Nitride Nanotubes , 1995, Science.

[7]  Takuya Hayashi,et al.  In-situ observed deformation of carbon nanotubes , 1998 .

[8]  W. D. Heer,et al.  Electrostatic deflections and electromechanical resonances of carbon nanotubes , 1999, Science.

[9]  J. Zuo,et al.  Double-helix structure in multiwall boron nitride nanotubes. , 2005, Acta crystallographica. Section A, Foundations of crystallography.

[10]  Alex Zettl,et al.  Measurement of the Elastic Modulus of a Multi-Wall Boron Nitride Nanotube , 1998 .

[11]  A. Maiti,et al.  Structural flexibility of carbon nanotubes , 1996 .

[12]  H. Wagner,et al.  Buckling and Collapse of Embedded Carbon Nanotubes , 1998 .

[13]  Otto Zhou,et al.  Deformation of carbon nanotubes in nanotube–polymer composites , 1999 .

[14]  R. Ruoff,et al.  Strength and breaking mechanism of multiwalled carbon nanotubes under tensile load , 2000, Science.

[15]  S. Iijima,et al.  In situ electron energy-loss spectroscopy on carbon nanotubes during deformation , 2001 .