Researchers from Skolkovo Institute of Science and Technology (Skoltech), a partner of TV BRICS, in collaboration with colleagues from China and Iran, have introduced a new approach to high-precision sensing using carbon nanotube fibres (CNTF). The study presents the first quantitative assessment of sensor accuracy during both the manufacturing and operational stages of epoxy nanocomposites, according to the educational institution’s press service.
The researchers highlight that the development opens up opportunities for creating advanced carbon-based materials capable of delivering precise real-time measurements. Unlike conventional fibre-optic and piezoelectric sensors, which are often difficult to integrate without affecting material properties, the new solution allows for seamless monitoring throughout the entire lifecycle of composite materials.
According to lead author Sergey Shadrov, the findings demonstrate that CNTFs are moving beyond theoretical potential and are now ready for practical applications. The technology enables monitoring of polymer curing processes as well as the performance of finished composites.
Experts noted that the study also shows a significant improvement in measurement accuracy.
“The crux of the work was to qualitatively evaluate the fidelity of CNTF-based sensors for the dual-stage monitoring of epoxy-based nanocomposites. For comparison, commercially available sensors have an error margin starting from 2 per cent. However, in the case of CNTFs, the maximum measurement error is 0.1 per cent (in a worst-case scenario),” added Assistant Professor Hassaan Ahmad Butt from the Skoltech Photonics Centre’s Laboratory of Nanomaterials, a co-author of the research.
Researchers attribute the high accuracy to the unique structure of CNTF, which ensures direct contact between the fibre surface and the conductive network within the material. According to Professor Albert Nasibulin, this eliminates the impact of contact resistance and significantly enhances measurement reliability. The innovation is expected to support the development of next-generation materials for advanced engineering applications.