Radial Waves Propagation in a Single-Walled Carbon Nanotube with Surface Irregularity

This work is an attempt to study the propagation of radial waves in an irregular single-walled carbon nanotube (ISWCNT). The characteristics equation of phase velocity of radial waves is derived using cylindrical thin shell theory. Taking into account the effects of the surface irregularity, dispersion curves are plotted and the effectiveness of surface irregularity is confirmed by comparing the obtained numerical results with those in cases of propagation of radial waves in uniform nanotube. The results turn out that, the phase velocity of radial waves is dependent on the surface irregularity and it is increasing with an increase of surface irregularity parameter. To the author best knowledge, propagation of radial waves in the irregular single-walled carbon nanotubes has not yet been studied, and the present work is an attempt to find out the dispersion relation of radial waves in ISWCNTs. Finally, the present results may serve as useful references for the application and the design of nano oscillators and nanodevices, in which single-walled carbon nanotubes act as the most prevalent nanocomposite structural element.

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Analysis of Longitudinal Wave Propagation in a Single-Walled Carbon Nanotube with Surface Irregularity via Donnell Thin Shell Approach

Journal of Nanoelectronics and Optoelectronics ◽

10.1166/jno.2020.2889 ◽

2020 ◽

Vol 15 (12) ◽

pp. 1538-1543

Author(s):

Awad Mousa ◽

Mahmoud. M. Selim

Keyword(s):

Carbon Nanotubes ◽

Wave Propagation ◽

Carbon Nanotube ◽

Thin Shell ◽

Single Walled Carbon Nanotubes ◽

Surface Irregularity ◽

Single Walled Carbon Nanotube ◽

Single Walled Carbon ◽

Nano Sensors ◽

Walled Carbon Nanotubes

In the reinforcement of the structure of carbon nanotubes, irregularities may occur as consequences of manufacturing defect, servicing reckless, environmental damages, etc. Hence, it is of great importance to deal with various constructions of single-walled carbon nanotubes to study wave propagation. This study is the first attempt to show the impacts of the surface irregularity on waves propagating in a single-walled carbon nanotube (SWCNT) using Donnell thin shell approach. A new closed-form of the characteristics equation is derived. The results show that, the presence of surface irregularities effects the natural frequency of longitudinal waves propagating in the single-walled carbon nanotubes. In this work, the theoretical investigation and numerical results are important to predict the phenomenon of wave propagation in irregular single-walled carbon nanotubes, which can be used as a useful reference for the designs of Nano drive devices, Nano oscillators and Nano sensors.

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Highly efficient thermophones based on freestanding single-walled carbon nanotube films

Nanoscale Horizons ◽

10.1039/c9nh00164f ◽

2019 ◽

Vol 4 (5) ◽

pp. 1158-1163 ◽

Cited By ~ 8

Author(s):

Stepan A. Romanov ◽

Ali E. Aliev ◽

Boris V. Fine ◽

Anton S. Anisimov ◽

Albert G. Nasibulin

Keyword(s):

Carbon Nanotubes ◽

Carbon Nanotube ◽

State Of The Art ◽

Single Walled Carbon Nanotubes ◽

The State ◽

Single Walled Carbon Nanotube ◽

Single Walled Carbon ◽

Highly Efficient ◽

Art Performance ◽

Walled Carbon Nanotubes

We present the state-of-the-art performance of air-coupled thermophones made of thin, freestanding films of randomly oriented single-walled carbon nanotubes (SWCNTs).

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Photochemical generation of bis-hexahapto chromium interconnects between the graphene surfaces of single-walled carbon nanotubes

Materials Horizons ◽

10.1039/c4mh00192c ◽

2015 ◽

Vol 2 (1) ◽

pp. 81-85 ◽

Cited By ~ 10

Author(s):

Aron Pekker ◽

Mingguang Chen ◽

Elena Bekyarova ◽

Robert C. Haddon

Keyword(s):

Carbon Nanotubes ◽

Carbon Nanotube ◽

Single Walled Carbon Nanotubes ◽

Single Walled Carbon Nanotube ◽

Single Walled Carbon ◽

Photochemical Generation ◽

Carbon Nanotube Junctions ◽

Walled Carbon Nanotubes

The linkage of single-walled carbon nanotube junctions by the photochemistry of organometallic chromium reagents produces dramatic increases in network conductivity.

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Single-walled carbon nanotubes as optical probes for bio-sensing and imaging

Journal of Materials Chemistry B ◽

10.1039/c7tb00748e ◽

2017 ◽

Vol 5 (32) ◽

pp. 6511-6522 ◽

Cited By ~ 36

Author(s):

Jing Pan ◽

Feiran Li ◽

Jong Hyun Choi

Keyword(s):

Carbon Nanotubes ◽

Carbon Nanotube ◽

Biomedical Imaging ◽

Single Walled Carbon Nanotubes ◽

Optical Probes ◽

Biomolecular Sensing ◽

Single Walled Carbon Nanotube ◽

Single Walled Carbon ◽

Walled Carbon Nanotubes

A review on the applications of single-walled carbon nanotube photoluminescence in biomolecular sensing and biomedical imaging.

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Chemical structures and physical properties of vanadium oxide films modified by single-walled carbon nanotubes

Physical Chemistry Chemical Physics ◽

10.1039/c5cp03600c ◽

2016 ◽

Vol 18 (3) ◽

pp. 1422-1428 ◽

Cited By ~ 7

Author(s):

Qiong He ◽

Xiangdong Xu ◽

Meng Wang ◽

Minghui Sun ◽

Yadong Jiang ◽

...

Keyword(s):

Carbon Nanotubes ◽

Carbon Nanotube ◽

Physical Properties ◽

Vanadium Oxide ◽

Composite Films ◽

Single Walled Carbon Nanotubes ◽

Single Walled Carbon Nanotube ◽

Single Walled Carbon ◽

Chemical Structures ◽

Walled Carbon Nanotubes

A series of vanadium oxide (VOx)–single-walled carbon nanotube (SWCNT) composite films with different SWCNT concentrations were prepared and systematically investigated. The critical SWCNT concentrations for modification of VOx films were experimentally deduced.

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Aligned fluorinated single-walled carbon nanotubes as a transmission channel towards attenuation of broadband electromagnetic waves

Journal of Materials Chemistry C ◽

10.1039/c8tc02522c ◽

2018 ◽

Vol 6 (35) ◽

pp. 9399-9409 ◽

Cited By ~ 15

Author(s):

Yang Liu ◽

Yichun Zhang ◽

Cheng Zhang ◽

Benyuan Huang ◽

Xu Wang ◽

...

Keyword(s):

Carbon Nanotubes ◽

Carbon Nanotube ◽

Electromagnetic Waves ◽

Single Walled Carbon Nanotubes ◽

Transmission Channel ◽

Single Walled Carbon Nanotube ◽

Single Walled Carbon ◽

Strong Electrostatic Interaction ◽

Walled Carbon Nanotubes ◽

Carbon Nanotube Networks

Highly fluorinated single-walled carbon nanotubes tend to be oriented under stress due to strong electrostatic interaction allowing directional propagation and then effective attenuation of electromagnetic waves by pristine single-walled carbon nanotube networks.

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Chirality effects on an electron transport in single-walled carbon nanotube

Scientific Reports ◽

10.1038/s41598-020-76047-9 ◽

2020 ◽

Vol 10 (1) ◽

Author(s):

J. Charoenpakdee ◽

Ongart Suntijitrungruang ◽

S. Boonchui

Keyword(s):

Carbon Nanotubes ◽

Carbon Nanotube ◽

Charge Transport ◽

Spin Polarization ◽

Low Frequency ◽

Single Walled Carbon Nanotubes ◽

Negative Wave ◽

Single Walled Carbon Nanotube ◽

Single Walled Carbon ◽

Walled Carbon Nanotubes

Abstract In our work, we investigate characteristics of conductivity for single-walled carbon nanotubes caused by spin–orbit interaction. In the case study of chirality indexes, we especially research on the three types of single-walled carbon nanotubes which are the zigzag, the chiral, and the armchair. The mathematical analysis employed for our works is the Green-Kubo Method. For the theoretical results of our work, we discover that the chirality of single-walled carbon nanotubes impacts the interaction leading to the spin polarization of conductivity. We acknowledge such asymmetry characteristics by calculating the longitudinal current–current correlation function difference between a positive and negative wave vector in which there is the typical chiral-dependent. We also find out that the temperature and the frequency of electrons affect the function producing the different characteristics of the conductivity. From particular simulations, we obtain that the correlation decrease when the temperature increase for a low frequency of electrons. For high frequency, the correlation is nonmonotonic temperature dependence. The results of the phenomena investigated from our study express different degrees of spin polarization in each chiral of single-walled carbon nanotube and significant effects on temperature-dependent charge transport according to carrier backscattering. By chiral-induced spin selectivity that produces different spin polarization, our work could be applied for intriguing optimization charge transport.

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Determination of fundamental coupled torsional—radial frequency of single-walled carbon nanotubes

Journal of Vibration and Control ◽

10.1177/1077546320981349 ◽

2020 ◽

pp. 107754632098134

Author(s):

Sneha Singh

Keyword(s):

Carbon Nanotubes ◽

Carbon Nanotube ◽

Shear Modulus ◽

Vibration Frequency ◽

Single Walled Carbon Nanotubes ◽

Radial Vibration ◽

Single Walled Carbon Nanotube ◽

Single Walled Carbon ◽

Walled Carbon Nanotubes

Research indicates that single-walled carbon nanotubes have a unique coupled torsional–radial vibration as one of their fundamental modes. Determination of their vibration frequency is required for efficient use of single-walled carbon nanotube in nano-electromechanical systems. However, there is no mathematical expression for these frequencies and their dependence on single-walled carbon nanotube geometry is unknown. This article examines the effect of diameter, length, and chirality on the fundamental coupled torsional–radial vibration frequency of single-walled carbon nanotube using molecular–structural–mechanics–approach, finite element analysis, and regression analyses. Consequently, a first-ever mathematical form of this frequency is derived. The form quickly and accurately predicts these frequencies at 1.5% in-sample, and 7.2% out-sample mean absolute percentage error. single-walled carbon nanotubes’ fundamental coupled torsional–radial vibration frequency is found independent of diameter and inversely proportional to length where the proportionality constant depends on chirality. The coupling of modes and the similarity of the frequency form with cylindrical shell suggest that single-walled carbon nanotube behave like thin shells in these vibrations. A form for effective circumferential shear modulus of single-walled carbon nanotube is also derived. This modulus is found to depend only on the chirality where achiral single-walled carbon nanotubes have higher values than chiral single-walled carbon nanotubes. Proposed mathematical forms can be used for characterization of single-walled carbon nanotubes, determination of single-walled carbon nanotubes’ effective shear modulus, and tuning operational frequency of single-walled carbon nanotube-based nano-electromechanical systems.

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DEFECT–DEFECT INTERACTION IN SINGLE-WALLED CARBON NANOTUBES UNDER TORSIONAL LOADING

International Journal of Modern Physics B ◽

10.1142/s021797921005510x ◽

2010 ◽

Vol 24 (10) ◽

pp. 1215-1226 ◽

Cited By ~ 11

Author(s):

ABUL M. A. HUQ ◽

ABUHANIF K. BHUIYAN ◽

KIN LIAO ◽

KHENG LIM GOH

Keyword(s):

Carbon Nanotubes ◽

Carbon Nanotube ◽

Angular Displacement ◽

Single Walled Carbon Nanotubes ◽

Torsional Loading ◽

Single Walled Carbon Nanotube ◽

Single Walled Carbon ◽

Defect Interaction ◽

Bond Stretching ◽

Walled Carbon Nanotubes

This paper presents an analysis of interactions between a pair of Stone–Wales (SW) defects in a single-walled carbon nanotube (SWCNT) that has been subjected to an external torque. Defect pairs, representing the different combinations of SW defect of A (SW-A) and B (SW-B) modes, were incorporated in SWCNT models of different chirality and diameter and solved using molecular mechanics. Defect–defect interaction was investigated by evaluating the C–C steric interactions in the defect that possesses the highest potential energy, E, as a function of inter-defect distance, D. This study reveals that the deformation of the C–C bond is attributed to bond stretching and bending. In the SW-B defects, there is an additional contributor arising from the dihedral angular deformation. The magnitude of E depends on the type of defect but the profile of the E versus D curve depends on the orientation of the defects. The largest indifference length, D0, beyond which two defects cease to interact, is approximately 30 Å. When the angular displacement of the tube increases two-fold, E increases, but the profile of the E versus D curve is not affected. The sense of rotation affects the magnitude of E but not the profile of the E versus D curve.

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