Application of Raman spectroscopy to analyse carbon nanotubes has been presented. Having a mixture of various carbon nanotube samples, one can easily distinguish, in a quick experiment, presence of singlewalled, doublewalled and multiwalled carbon nanotubes (SWCNT, DWCNT, MWCNT, respectively). The so-called G-line is a characteristic feature of the graphitic layers and corresponds to the tangen...

The fabrication of flexible transparent conducting films (TCFs) is important for the development of the next-generation flexible devices. In this study, we used double-walled carbon nanotubes (DWCNTs) as the starting material and described a fabrication method of flexible TCFs. We have determined in a quantitative way that the key factors are the length and the dispersion states of the DWCNTs a...

We present electrical and thermal specific heat measurements that show superconductivity in double-wall carbon nanotube (DWCNT) bundles. Clear evidence, comprising a resistance drop as a function of temperature, magnetoresistance and differential resistance signature of the supercurrent, suggest an intrinsic superconducting transition below 6.8 K for one particular sample. Additional electrical...

With the technological advances in wearable and portable electronic devices, demands for associated technologies including flexible energy storage devices increase. Among many types of supercapacitors (FSCs) are highly attractive comparison with others as they exhibit high power density, mechanical stability. In particular, carbon nanotubes (CNTs) being widely used electrode materials FSCs, owi...

In this paper, using energy method, small scale effects on the buckling analysis of a double-walled carbon nanotube (DWCNT) under external radial pressure is studied. The constitutive equations derived for a DWCNT using the nonlocal theory of elasticity which Eringen are presented for the first time. By minimizing the second variation of the total energy for a DWCNT, hence, the value of the non...

In this paper, a comparison is conducted between two different formulations of the van der Waals interaction coefficient layers, as applied to vibrations double-walled carbon nanotubes (DWCNTs); specifically, evaluation natural frequencies achieved through Ru’s and He’s formulations. The actual discrete DWCNT modelled by means couple concentric equivalent continuous thin cylindrical shells, whe...

This paper reports the strain sensitivity of flexible, electrically conductive nanostructuredcellulose which was prepared by modification of bacterial cellulose with double-walled carbonnanotubes (DWCNT) and multi-walled carbon nanotubes (MWCNT). The electrical conductivitydepends on the modifying agent and its dispersion process. The conductivity of the samplesobtained from...

Thermoelectrics are a promising solution to the recovery of some 60% worldwide energy wasted as heat. However, their conversion efficiency is low and best performing materials brittle, toxic, made expensive ceramics. The challenge in developing better disrupting electrical vs thermal conductivity correlation, achieve simultaneously with high conductivity. Carbon nanotubes allow for decoupling e...

Carbon nanotubes have very high potential for applications in nanoelectromechanical devices, nano-optomechanical systems and nanocomposites. However, their full exploitation depends upon knowledge of their mechanical, electrical and thermal properties. Several analytical, experimental, molecular mechanics (MM) and molecular dynamics simulations have been performed to study their deformations un...