Moiré Physics of One-Dimensional Related Systems and Their Measurement

Abstract Currently, the magic-angle graphene has given a tremendous boost to the study of unconventional superconductors. On the other hand, there were still limited experimental studies on superconductivity in one-dimensional (1D) carbon nanotube systems. The study of experimental systems in demonstrating superconductivity was therefore scientifically important. In this review, we have shown strategies toward demonstrating the superconductivity for the single double-wall carbon nanotube (DWCNT). In general, there have been two directions to analyse superconducting properties of one-dimensional materials: (i) strong correlated states (ii) anomalous electron transport operations. We introduced the transmission electron microscope (TEM) and Rayleigh scattering spectroscopy to describe the strong correlation. The theoretical foundations of moiré physics have also been described. Given all the methods, we concluded that the most intuitive way to demonstrate the superconductivity of single double-walled carbon nanotubes is the critical temperature. The sharp drop of the resistance could be directly observed, and the Tc could be obtained from the electrical transport data. In the last section, we also summarized the challenges that need to be addressed in future superconductivity studies of 1D carbon nanotubes.

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One-Dimensional Confined Motion of Single Metal Atoms inside Double-Walled Carbon Nanotubes

Physical Review Letters ◽

10.1103/physrevlett.102.195504 ◽

2009 ◽

Vol 102 (19) ◽

Cited By ~ 31

Author(s):

Jamie H. Warner ◽

Yasuhiro Ito ◽

Mark H. Rümmeli ◽

Thomas Gemming ◽

Bernd Büchner ◽

...

Keyword(s):

Carbon Nanotubes ◽

One Dimensional ◽

Metal Atoms ◽

Double Walled Carbon Nanotubes ◽

Walled Carbon Nanotubes

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SOME NOTES ON LOW-DIMENSIONAL ELASTIC THEORIES OF BIO- AND NANO-STRUCTURES

Modern Physics Letters B ◽

10.1142/s021798491002478x ◽

2010 ◽

Vol 24 (23) ◽

pp. 2403-2412 ◽

Cited By ~ 5

Author(s):

XIAO-HUA ZHOU

Keyword(s):

Carbon Nanotubes ◽

Carbon Nanotube ◽

Energy Density ◽

Helix Angle ◽

Dimensional Structure ◽

One Dimensional ◽

Nano Structures ◽

Multi Walled Carbon Nanotubes ◽

Low Dimensional ◽

Walled Carbon Nanotubes

The shapes of DNA, carbon nanotube (CNT) and vesicle are determined by the minimum of their elastic energy. Two central results about the low-dimensional elastic structure are reported here. Firstly, if the energy density of a one-dimensional structure is only related to its curvature, we generally find that a helix solution with the helix angle θ = ±π/4 will have zero total energy. Secondly, with the fixed length and radii, the helical multi-walled carbon nanotubes (MWNTs) and DNA will have the lowest energy when the helix angle θ = ±π/3.

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One-dimensional hydrogen bonding networks of bis-hydroxylated diamantane formed inside double-walled carbon nanotubes

Chemical Communications ◽

10.1039/c7cc09832d ◽

2018 ◽

Vol 54 (31) ◽

pp. 3823-3826 ◽

Cited By ~ 4

Author(s):

Yusuke Nakanishi ◽

Haruka Omachi ◽

Natalie A. Fokina ◽

Peter R. Schreiner ◽

Jonathan Becker ◽

...

Keyword(s):

Carbon Nanotubes ◽

Hydrogen Bonding ◽

One Dimensional ◽

Hydrogen Bonding Networks ◽

Double Walled Carbon Nanotubes ◽

Walled Carbon Nanotubes

1,6-Bis(hydroxymethyl)diamantane forms one-dimensional networks inside carbon nanotubes through hydrogen bonding that leads to higher filling-yield as compared with pristine diamantane.

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Carbon Nanotubes: Continuous Band-Filling Control and One-Dimensional Transport in Metallic and Semiconducting Carbon Nanotube Tangled Films (Adv. Funct. Mater. 22/2014)

Advanced Functional Materials ◽

10.1002/adfm.201470141 ◽

2014 ◽

Vol 24 (22) ◽

pp. 3289-3289

Author(s):

Hidekazu Shimotani ◽

Satoshi Tsuda ◽

Hongtao Yuan ◽

Yohei Yomogida ◽

Rieko Moriya ◽

...

Keyword(s):

Carbon Nanotubes ◽

Carbon Nanotube ◽

One Dimensional ◽

Continuous Band ◽

Band Filling

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A Flow Sensor for Liquids Based on Single-Walled Carbon Nanotube Thin Films

Solid State Phenomena ◽

10.4028/www.scientific.net/ssp.121-123.75 ◽

2007 ◽

Vol 121-123 ◽

pp. 75-79 ◽

Cited By ~ 1

Author(s):

C.L. Cao ◽

Liang Fang ◽

K.J. Liao ◽

F.J. Wei ◽

L. Li

Keyword(s):

Thin Films ◽

Carbon Nanotubes ◽

Carbon Nanotube ◽

Angular Velocity ◽

Experimental Studies ◽

Chemical Vapor ◽

Flow Sensor ◽

Single Walled Carbon Nanotube ◽

Single Walled Carbon ◽

Electron Drag

An angular velocity of flow sensor for liquids based on single-walled carbon nanotube thin films is presented. The carbon nanotubes in this study were fabricated on Si substrate by hot filament chemical vapor deposition (CVD). The experimental results showed that the flow-induced current on the surface of carbon nanotube thin films was closely depended upon the angular velocity, concentration, properties and temperature of the liquids. The current increased with increasing angular velocity, concentration and temperature of the liquids. In this study, the liquids such as water, NaCl solution and other electrolyte were flowing over the sensor. The results obtained were also discussed. The theoretical and experimental studies have shown that there was electronic friction and electron drag effect of carbon nanotubes in flowing liquids. This effect in carbon nanotubes can be used for a new flow sensor.

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Buckling of a Clamped-Free Double-Walled Carbon Nanotube by the Bubnov-Galerkin Method

Journal of Applied Mechanics ◽

10.1115/1.4006937 ◽

2012 ◽

Vol 80 (1) ◽

Author(s):

Isaac Elishakoff ◽

Simon Bucas

Keyword(s):

Carbon Nanotubes ◽

Carbon Nanotube ◽

Galerkin Method ◽

Compressive Load ◽

Comparison Functions ◽

Double Walled Carbon Nanotubes ◽

Walled Carbon Nanotubes

This study deals with the Bubnov-Galerkin method applied to the buckling of clamped-free double-walled carbon nanotubes (DWCNTs) subjected to a concentrated compressive load at the free end. It was found that at least four comparison functions are needed in order to obtain accurate results.

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TRANSITION METAL/CARBON NANOTUBE HYBRID STRUCTURES

International Journal of Nanoscience ◽

10.1142/s0219581x05002997 ◽

2005 ◽

Vol 04 (01) ◽

pp. 139-147

Author(s):

CHIH-KAI YANG ◽

JIJUN ZHAO ◽

JIAN PING LU

Keyword(s):

Carbon Nanotubes ◽

Carbon Nanotube ◽

Transition Metal ◽

Magnetic Moments ◽

Hybrid Structures ◽

One Dimensional ◽

Spin Polarized ◽

Polarized Transport ◽

Spin Polarized Transport ◽

Conduction Properties

The unique geometry of carbon nanotubes offers an ideal template for designing one-dimensional metal/nanotube hybrid structures. Through ab initio calculations we found that transition-metal/nanotube hybrid structures exhibit very interesting physical properties. The hybrid structures can have drastically different conduction properties from those of the pristine tubes and considerable magnetic moments. In some instances perfect spin polarization is achieved. The results point to a new and promising approach that uses such hybrid structures as devices for spin-polarized transport, which is expected to provide immense applications in the emerging field of spintronics.

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Experimental Studies on CNT Reinforced Aluminum Matrix Nanocomposites

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.1101.89 ◽

2015 ◽

Vol 1101 ◽

pp. 89-92

Author(s):

K.V. Sreenivas Rao ◽

S. Sanman

Keyword(s):

Carbon Nanotubes ◽

Tensile Strength ◽

Carbon Nanotube ◽

Experimental Studies ◽

Aluminum Matrix ◽

Weight Fraction ◽

Stir Casting ◽

Aluminum Matrix Composites ◽

Uniform Dispersion ◽

The Matrix

The remarkable high tensile strength and very high aspect ratio of carbon nanotubes make them valuable components for mechanically reinforced composite materials. In this study, Carbon Nanotube (CNT) reinforced aluminum matrix composites were prepared by simple stir casting route with different percentages of Carbon Nanotube reinforcement. The prepared nanocomposite specimens were subjected to evaluation of mechanical properties and microstructure. It was evident from the study that, as the weight fraction of nanotube in the matrix increases, the ultimate tensile strength, macro and micro-hardness also increases. The microstructures show clustering of the carbon nanotubes in the matrix. The difficulties experienced in uniform dispersion of Carbon Nanotube in the matrix to achieve optimum desired properties are discussed.

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Effective Approximations for Natural Frequencies of Double-Walled Carbon Nanotubes Based on Donnell Shell Theory

Journal of Nanotechnology in Engineering and Medicine ◽

10.1115/1.4003601 ◽

2011 ◽

Vol 2 (2) ◽

Cited By ~ 2

Author(s):

Demetris Pentaras ◽

Isaac Elishakoff

Keyword(s):

Carbon Nanotubes ◽

Carbon Nanotube ◽

Natural Frequency ◽

Characteristic Equation ◽

Shell Theory ◽

Natural Frequencies ◽

Analytical Formulas ◽

Double Walled Carbon Nanotubes ◽

Walled Carbon Nanotubes ◽

First Time

The vibration behavior of double-walled carbon nanotube (DWCNT) is investigated based on Donnell shell theory with van der Waals interaction taken into consideration. In addition, new results are obtained for the natural frequencies of a DWCNT based on a simplified version of Donnell shell theory by neglecting the tangential inertia terms. The resulting reduced characteristic equation for the natural frequency represents the radial mode of vibration. The factor of neglecting tangential inertia relative to the values of frequencies obtained by full Donnell shell theory is also obtained with attendant interesting results. Further possible simplifications of Donnell shell theory are introduced. For the first time in the literature, the effect of neglect of tangential inertia terms in DWCNTs is investigated. Accurate approximate analytical formulas are uncovered for the fundamental natural frequencies and compared with the exact values.

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The effect of an excessive amount of carbon nanotubes on the properties of zinc oxide-carbon nanotube nanocomposites

Science and Engineering of Composite Materials ◽

10.1515/secm-2014-0197 ◽

2016 ◽

Vol 23 (4) ◽

pp. 389-394 ◽

Cited By ~ 2

Author(s):

Ömer Güler

Keyword(s):

Electron Microscopy ◽

Carbon Nanotubes ◽

Zinc Oxide ◽

Optical Properties ◽

Carbon Nanotube ◽

Electrical Transport ◽

Chemical Vapor ◽

Electrical And Optical Properties ◽

Temperature Conductivity ◽

Room Temperature Conductivity

AbstractThe effect of the amount of carbon nanotubes on the electrical and optical properties of carbon nanotube (CNT)-zinc oxide nanocomposites was investigated. In this study, carbon nanotubes were prepared by chemical vapor deposition in a fluidized reactor. The diameters and lengths of the carbon nanotubes that were synthesized were determined by high-resolution transmission electron microscopy to be 20–30 nm and a few micrometers, respectively. Then, CNTs were added to commercial zinc oxide powder to prepare the nanocomposite. The structural, optical, and electrical properties of the samples were characterized by various techniques, such as scanning electron microscopy (SEM), UV-vis absorption, and electrical transport measurements. The room temperature conductivity σ25 values of the undoped ZnO and ZnO doped with 0.1% CNTs, 0.2% CNTs, and 5% CNTs were found to be 6.55×10-5, 5.46×10-4, 1.23×10-3, and 2.83×10-2 S/cm, respectively. The optical band gaps of the composites were determined by the Kubelka-Munk theory based on the analysis of diffuse reflectance. The results that were obtained indicated that the electrical and optical properties of ZnO semiconductors can be improved by the incorporation of CNTs. However, the ZnO lost some of its distinctive properties when excess amounts of CNTs were used in the ZnO-CNT composites.

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