4.8 Article

Pseudo-break imaging of carbon nanotubes for determining elastic bending energies

Journal

NANO RESEARCH
Volume 16, Issue 5, Pages 7443-7451

Publisher

TSINGHUA UNIV PRESS
DOI: 10.1007/s12274-022-5295-1

Keywords

pseudo-break imaging; carbon nanotube; electron microscopy; elastic bending energy

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In this study, a pseudo-break imaging method has been proposed and realized on carbon nanotubes (CNTs), which can accurately measure the bending energies of CNTs and manipulate their bending shapes and energies. This work is of great significance to the fundamental and applied studies of one-dimensional nanomaterials.
One-dimensional (1D) nanomaterials easily bend due to perturbations from their surroundings or their own behaviors. This phenomenon not only impacts the performances of various devices but has also been employed to develop a variety of new functional devices, in which the bending energies of the nanomaterials determine the device performances. However, measuring the energies of such nanomaterials is extremely difficult. Herein, pseudo-break imaging of 1D nanomaterials has been proposed and realized on individual carbon nanotubes (CNTs), in which a CNT appears to break and has a fracture but is actually intact. This imaging approach provides the values of the bending energies of the CNTs with an accuracy of 1-50 eV. Furthermore, this imaging approach can manipulate the bending shapes and energies of CNTs. This work presents a protocol for bending analysis and manipulation, which are vital to fundamental and applied studies of 1D nanomaterials.

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