Anomalous piezoelectricity and conductivity in aligned carbon nanotubes

Il’ina, M. V.; Il’in, O. I.; Gur'yanov, A. V.; Osotova, O I; Blinov, Yuriy F.; Федотов, А. А.; Агеев, О. А.

doi:10.1039/d1tc00356a

Cited by 17 publications

(13 citation statements)

References 56 publications

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“…The appearance of the internal electric field strength in a deformed carbon nanotube connected with its piezoelectric properties was shown [29,31]. Using atomic force microscopy, we demonstrated the piezoelectric response of multi-walled CNTs [31,32]. The current generated upon deformation of an individual CNT reached −24 nA.…”

Section: Introductionmentioning

confidence: 89%

“…For the first time, we discovered the anomalous piezoelectric properties of CNTs via experimental research studying the memristor effect in a deformed CNT [29][30][31]. The appearance of the internal electric field strength in a deformed carbon nanotube connected with its piezoelectric properties was shown [29,31]. Using atomic force microscopy, we demonstrated the piezoelectric response of multi-walled CNTs [31,32].…”

Section: Introductionmentioning

confidence: 97%

“…In this case, it is interesting that a significant bending moment is initially formed in carbon nanotubes (CNTs), which can lead to the manifestation of the surface piezoelectricity [22]. For the first time, we discovered the anomalous piezoelectric properties of CNTs via experimental research studying the memristor effect in a deformed CNT [29][30][31]. The appearance of the internal electric field strength in a deformed carbon nanotube connected with its piezoelectric properties was shown [29,31].…”

Section: Introductionmentioning

confidence: 98%

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Analysis of the Piezoelectric Properties of Aligned Multi-Walled Carbon Nanotubes

et al. 2021

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Recent studies reveal that carbon nanostructures show anomalous piezoelectric properties when the central symmetry of their structure is violated. Particular focus is given to carbon nanotubes (CNTs) with initial significant curvature of the graphene sheet surface, which leads to an asymmetric redistribution of the electron density. This paper presents the results of studies on the piezoelectric properties of aligned multi-walled CNTs. An original technique for evaluating the effective piezoelectric coefficient of CNTs is presented. For the first time, in this study, we investigate the influence of the growth temperature and thickness of the catalytic Ni layer on the value of the piezoelectric coefficient of CNTs. We establish the relationship between the effective piezoelectric coefficient of CNTs and their defectiveness and diameter, which determines the curvature of the graphene sheet surface. The calculated values of the effective piezoelectric coefficient of CNTs are shown to be between 0.019 and 0.413 C/m2, depending on the degree of their defectiveness and diameter.

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Section: Introductionmentioning

confidence: 89%

Section: Introductionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 98%

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Analysis of the Piezoelectric Properties of Aligned Multi-Walled Carbon Nanotubes

et al. 2021

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“…Thus, BNNT and CNT share similar properties, including superior mechanical strength [7,8], high thermal conductivity [9][10][11], and exceptional thermal stability [12][13][14]. CNTs are centrosymmetric, semimetallic, and semiconductive [15], whereas, on the other hand, BNNTs are non-centrosymmetric and outstanding insulators [16]. Due to the difference in electronegativity between boron (2.04) and nitrogen (3.04), an inconsistency in electronic property is knowingly ascribed to the polarity in the B-N bond [17,18].…”

Section: Introductionmentioning

confidence: 99%

Enhancing piezoelectric performance of CNTs through B and N substitution under combined mechanical loads: insights from MD simulations

Luhadiya,

Kundalwal

2024

Nanotechnology

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The piezoelectric properties of carbon nanotubes (CNTs) doped with boron (B) and nitrogen (N) were studied using the classical molecular dynamics (MD) simulation software package Large Scale Atomic/Molecular Massively Parallel Simulator (LAMMPS). The interactions among the nanotube atoms C, N, and B were calculated using the Tersoff potential. MD simulations were performed to observe the changes in the piezoelectric coefficient of the doped CNTs under loading conditions like tension, torsion, and a combination of both. We considered a wide range of chirality to determine the influence of structural variation on the piezoelectric effect. The study revealed that B-CNTs exhibit superior piezoelectric coefficients compared to N-CNTs, indicating the significant role of dopant type. Moreover, under tensile loading, zigzag-oriented B-CNTs showed higher piezoelectric coefficients with a maximum e33 = 0.2441 C/m2, whereas under torsional loading, armchair-oriented B-CNTs showed enhanced response with a maximum e36 = 0.0564 C/m2. A notable observation was that under combined loading conditions (tensile and torsional), the piezoelectric behavior of the B-CNTs was dependent on the nanotube’s chirality and did not yield a linear additive response. The polarization induced under combined loading in most doped CNTs is significantly higher than the sum of polarization generated under individual tensile and torsional loading conditions. This behavior suggests that the overall piezoelectric effect under combined loading can be enhanced, which emphasizes the need for an approach to optimize the mechanical loading condition. The results showcase the potential of B-/N-CNTs to be engineered for efficient performance by demonstrating that tailored mechanical loading can enhance the piezoelectric responses in doped CNTs, opening a pathway for highly functional and efficient nanoscale piezoelectric devices.

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“…The pyrrole-like nitrogen introduces significant distortions into the nanotube structure due to the formation of five-atom rings and leads to the formation of bamboo-like defects [31,32]. Bamboo-like defects, in turn, can lead to the formation of anomalous piezoelectric properties in N-CNTs to develop nanogenerators [33][34][35]. In this case, the material of the lower electrode, on which the N-CNTs are grown, significantly affects the concentration of doping nitrogen and its distribution according to the incorporation type [36].…”

Section: Introductionmentioning

confidence: 99%

Comparison of Synchrotron and Laboratory X-ray Sources in Photoelectron Spectroscopy Experiments for the Study of Nitrogen-Doped Carbon Nanotubes

Il’ina,

Khubezhov,

Polyvianova

et al. 2023

QuBS

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The chemical composition and stoichiometry of vertically aligned arrays of nitrogen-doped multi-walled carbon nanotubes (N-CNTs) were studied by photoelectron spectroscopy using laboratory and synchrotron X-ray sources. We performed careful deconvolution of high-resolution core-level spectra to quantify pyridine/pyrrole-like defects in N-CNTs, which are a key factor in the efficiency of the piezoelectric response for this material. It is shown that the XPS method makes it possible to estimate the concentration and type of nitrogen incorporation (qualitatively and quantitatively) in the “N-CNT/Mo electrode” system using both synchrotron and laboratory sources. The obtained results allow us to study the effect of the nickel catalytic layer thickness on the concentration of pyridine/pyrrole-like nitrogen and piezoelectric response in the nanotubes.

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Anomalous piezoelectricity and conductivity in aligned carbon nanotubes

Abstract: Aligned carbon nanotubes (CNTs) are among the most promising nanostructures in nanoelectronics. However, at the moment, CNTs have not received wide practical application for producing electronic devices, owing to the...

Cited by 17 publications

References 56 publications

Analysis of the Piezoelectric Properties of Aligned Multi-Walled Carbon Nanotubes

Analysis of the Piezoelectric Properties of Aligned Multi-Walled Carbon Nanotubes

Enhancing piezoelectric performance of CNTs through B and N substitution under combined mechanical loads: insights from MD simulations

Comparison of Synchrotron and Laboratory X-ray Sources in Photoelectron Spectroscopy Experiments for the Study of Nitrogen-Doped Carbon Nanotubes

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