Current studies of carbon nanotubes have enabled both new electronic applications and improvements to the performance of existing ones. Manufacturing of macroscopic electronic components with this material generally involves the use of printed electronic methods, which must use carbon nanotube (CNT) powders. However, in recent years, it has been shown that the use of ready-made self-standing macroscopic CNT assemblies could have considerable potential in the future development of electronic components. Two examples of these are spun carbon nanotube fibers and CNT films. The following paper considers whether these spun materials may replace printed electronic CNT elements in all applications. To enable the investigation of this question some practical experiments were undertaken. They included the formation of smart textile elements, flexible and transparent components, and structural electronic devices. By taking this approach it has been possible to show that CNT fibres and films are highly versatile materials that may improve the electrical and mechanical performance of many currently produced printed electronic elements. Additionally, the use of these spun materials may enable many new applications and functionalities particularly in the area of e-textiles. However, as with every new technology, it has its limitations, and these are also considered.

Carbon nanotubes (CNTs) have a wide range of unique properties, which have kept them at the forefront of research in recent decades. Due to their electrical and thermal characteristics, they are often evaluated as key components of thermogenerators. One can create thermogenerators exclusively from CNTs, without any metal counterpart, by properly selecting dopants to obtain n- and p-doped CNTs. However, the performance of CNT thermogenerators remains insufficient to reach wide commercial implementation. This study shows that molecular doping and the inclusion of ZnO nanowires (NWs) can greatly increase their application potential. Moreover, prototype modules, based on single-walled CNTs (SWCNTs), ZnO NWs, polyethyleneimine, and triazole, reveal notable capabilities for generating electrical energy, while ensuring fully scalable performance. Upon doping and the addition of ZnO nanowires, the electrical conductivity of pure SWCNTs (211 S/cm) was increased by a factor of three. Moreover, the proposed strategy enhanced the Power Factor values from 18.99 (unmodified SWCNTs) to 34.9 and 42.91 µW/m∙K² for CNTs triazole and polyethyleneimine + ZnO NWs inclusion, respectively.

Harnessing the unique optical properties of chirality-enriched single-walled carbon nanotubes (SWCNTs) is the key to unlocking the application of SWCNTs in photonics.

Growing demand for electricity necessitates making the overall process of electrical energy generation more efficient.

We demonstrate a highly tunable platform for modification of the optical properties of single-walled carbon nanotubes, strongly enhancing radiative recombination of excitons.

In a wildly spreading research on carbon nanotube fibers as a potential material for the future, one of the most promising fields are electrical and electronic engineering. As it was mentioned repeatedly the main thing that need to be dealt with for a serious consideration of carbon nanotube structures in application as good conducting wires is a necessity of improvement their electrical conductivity values. In the many possibilities of such electrical properties improve, one of the best is chemical doping. In this work we present a oxidative doping treatment on carbon nanotube fibers via Fenton reaction. However the first assumptions on introduction hydroxide ion doping has changed after performing experiments. The reaction resulted in iron doping on carbon nanotube fibers. Such a result most probably is associated with a great reactivity of carbon nanotube with iron particles. This reactivity is being used in carbon nanotube structures production procedure, due to catalytic action of iron in the issue of carbon nanotube synthesis. This result, however differs from intentions gave us new carbon nanotube-iron composite, which seems to have a great potential for further research.