journal article·2019-10-01Open access

Kinking effects and transport properties of coaxial BN-C nanotubes as revealed by in situ transmission electron microscopy and theoretical analysis

Xin Zhou, Dmitry G. Kvashnin, Yanming Xue, Dai-Ming Tang, Ovidiu Cretu, Masanori Mitome, Yoshio Bando, Pavel B. Sorokin, Takayoshi Sasaki, Dmitri Golberg

APL Materials· Volume 7· Issue 10

Abstract

The insights into transport behavior and the effects of bending on heterostructures constructed from boron nitride (BN) and carbon (C) nanotubes are important for their flexible device applications because the two systems have equally excellent mechanical but completely different electrical properties. In this work, coaxial BN–C nanotubes have been fabricated and their intrinsic transport properties, as well as structural and electrical response to bending deformation, are studied inside a high-resolution transmission electron microscope. Ballistic, diffusive, and hopping transports within different tube length ranges have been observed. When bending deformation was applied to the tubes, although severe kinking becomes apparent, their transport properties are not notably affected. Meanwhile, both theoretical and experimental analyses confirm that the kink positions depend on the ratio of tube diameter to its length. Possible formation of quantum dots, directly within the kink areas, was predicted through calculations of electron density redistribution between nanotube walls at bending.
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Research context

OpenAlex topics: Graphene research and applications · Boron and Carbon Nanomaterials Research · Carbon Nanotubes in Composites

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS) 1 , 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan

Graduate School of Pure and Applied Sciences, University of Tsukuba 2 , 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8577, Japan

National University of Science and Technology (MISiS) 3 , 4 Leninskiy Prospekt, Moscow 119049, Russian Federation

Emanuel Institute of Biochemical Physics RAS 4 , 4 Kosigina St., Moscow 119334, Russian Federation

School of Materials Science and Engineering, Hebei University of Technology 5 , Tianjin 300130, People’s Republic of China

Electron Microscopy Group, National Institute for Materials Science (NIMS) 6 , 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan

Institute of Molecular Plus, Tianjin University 7 , No. 11 Building, No. 92 Weijin Road, Nankai District, Tianjin 300072, People’s Republic of China

Australian Institute for Innovative Materials, University of Wollongong 8 , Squires Way, North Wollongong, NSW 2500, Australia

Technological Institute for Superhard and Novel Carbon Materials 9 , 7a Centralnaya Street, Troitsk, Moscow 108840, Russian Federation

School of Chemistry, Physics and Mechanical Engineering, Science and Engineering Faculty, Queensland University of Technology (QUT) 10 , 2nd George St., Brisbane, QLD 4000, Australia

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