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Electrical Conductivity of Multiwall Carbon Nanotube Bundles Contacting with Metal Electrodes by Nano Manipulators inside SEM

Determining the metallicity and semiconductivity of a multi-walled carbon nanotube (MWCNT) bundle plays a particularly vital role in its interconnection with the metal electrode of an integrated circuit. In this paper, an effective method is proposed to determine the electrical transport properties...

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Autores principales: Yang, Quan, Ma, Li, Xiao, Shungen, Zhang, Dongxing, Djoulde, Aristide, Ye, Maosheng, Lin, Yini, Geng, Songchao, Li, Xuan, Chen, Tao, Sun, Lining
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8153315/
https://www.ncbi.nlm.nih.gov/pubmed/34068361
http://dx.doi.org/10.3390/nano11051290
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author Yang, Quan
Ma, Li
Xiao, Shungen
Zhang, Dongxing
Djoulde, Aristide
Ye, Maosheng
Lin, Yini
Geng, Songchao
Li, Xuan
Chen, Tao
Sun, Lining
author_facet Yang, Quan
Ma, Li
Xiao, Shungen
Zhang, Dongxing
Djoulde, Aristide
Ye, Maosheng
Lin, Yini
Geng, Songchao
Li, Xuan
Chen, Tao
Sun, Lining
author_sort Yang, Quan
collection PubMed
description Determining the metallicity and semiconductivity of a multi-walled carbon nanotube (MWCNT) bundle plays a particularly vital role in its interconnection with the metal electrode of an integrated circuit. In this paper, an effective method is proposed to determine the electrical transport properties of an MWCNT bundle using a current–voltage characteristic curve during its electrical breakdown. We established the reliable electrical nanoscale contact between the MWCNT bundle and metal electrode using a robotic manipulation system under scanning electron microscope (SEM) vacuum conditions. The experimental results show that the current–voltage curve appears as saw-tooth-like current changes including up and down steps, which signify the conductance and breakdown of carbon shells in the MWCNT bundle, respectively. Additionally, the power law nonlinear behavior of the current–voltage curve indicates that the MWCNT bundle is semiconducting. The molecular dynamics simulation explains that the electron transport between the inner carbon shells, between the outermost carbon shells and gold metal electrode and between the outermost carbons shells of two adjacent individual three-walled carbon nanotubes (TWCNTs) is through their radial deformation. Density functional theory (DFT) calculations elucidate the electron transport mechanism between the gold surface and double-wall carbon nanotube (DWCNT) and between the inner and outermost carbon shells of DWCNT using the charge density difference, electrostatic potential and partial density of states.
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spelling pubmed-81533152021-05-27 Electrical Conductivity of Multiwall Carbon Nanotube Bundles Contacting with Metal Electrodes by Nano Manipulators inside SEM Yang, Quan Ma, Li Xiao, Shungen Zhang, Dongxing Djoulde, Aristide Ye, Maosheng Lin, Yini Geng, Songchao Li, Xuan Chen, Tao Sun, Lining Nanomaterials (Basel) Article Determining the metallicity and semiconductivity of a multi-walled carbon nanotube (MWCNT) bundle plays a particularly vital role in its interconnection with the metal electrode of an integrated circuit. In this paper, an effective method is proposed to determine the electrical transport properties of an MWCNT bundle using a current–voltage characteristic curve during its electrical breakdown. We established the reliable electrical nanoscale contact between the MWCNT bundle and metal electrode using a robotic manipulation system under scanning electron microscope (SEM) vacuum conditions. The experimental results show that the current–voltage curve appears as saw-tooth-like current changes including up and down steps, which signify the conductance and breakdown of carbon shells in the MWCNT bundle, respectively. Additionally, the power law nonlinear behavior of the current–voltage curve indicates that the MWCNT bundle is semiconducting. The molecular dynamics simulation explains that the electron transport between the inner carbon shells, between the outermost carbon shells and gold metal electrode and between the outermost carbons shells of two adjacent individual three-walled carbon nanotubes (TWCNTs) is through their radial deformation. Density functional theory (DFT) calculations elucidate the electron transport mechanism between the gold surface and double-wall carbon nanotube (DWCNT) and between the inner and outermost carbon shells of DWCNT using the charge density difference, electrostatic potential and partial density of states. MDPI 2021-05-13 /pmc/articles/PMC8153315/ /pubmed/34068361 http://dx.doi.org/10.3390/nano11051290 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Yang, Quan
Ma, Li
Xiao, Shungen
Zhang, Dongxing
Djoulde, Aristide
Ye, Maosheng
Lin, Yini
Geng, Songchao
Li, Xuan
Chen, Tao
Sun, Lining
Electrical Conductivity of Multiwall Carbon Nanotube Bundles Contacting with Metal Electrodes by Nano Manipulators inside SEM
title Electrical Conductivity of Multiwall Carbon Nanotube Bundles Contacting with Metal Electrodes by Nano Manipulators inside SEM
title_full Electrical Conductivity of Multiwall Carbon Nanotube Bundles Contacting with Metal Electrodes by Nano Manipulators inside SEM
title_fullStr Electrical Conductivity of Multiwall Carbon Nanotube Bundles Contacting with Metal Electrodes by Nano Manipulators inside SEM
title_full_unstemmed Electrical Conductivity of Multiwall Carbon Nanotube Bundles Contacting with Metal Electrodes by Nano Manipulators inside SEM
title_short Electrical Conductivity of Multiwall Carbon Nanotube Bundles Contacting with Metal Electrodes by Nano Manipulators inside SEM
title_sort electrical conductivity of multiwall carbon nanotube bundles contacting with metal electrodes by nano manipulators inside sem
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8153315/
https://www.ncbi.nlm.nih.gov/pubmed/34068361
http://dx.doi.org/10.3390/nano11051290
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