Improving the synthesis of carbon nanotubes CNTs to enhance their electrical conductivity and mechanical strength for use in high-performance electronics and nanocomposites can be achieved through several approaches:1. Control of chirality: The electrical properties of CNTs are highly dependent on their chirality, which is determined by the arrangement of carbon atoms in the nanotube lattice. By controlling the chirality during synthesis, it is possible to produce CNTs with specific electrical properties, such as metallic or semiconducting behavior. Techniques like chirality-controlled chemical vapor deposition CVD and template-assisted growth can be employed to achieve this.2. High-quality synthesis: The presence of defects and impurities in CNTs can significantly affect their electrical conductivity and mechanical strength. To minimize these defects, it is crucial to optimize the synthesis process. This can be done by using high-purity precursors, optimizing reaction conditions temperature, pressure, catalyst concentration , and employing advanced synthesis techniques like plasma-enhanced CVD and floating catalyst CVD.3. Purification and post-treatment: After synthesis, CNTs often contain impurities such as amorphous carbon, residual catalyst particles, and other byproducts. These impurities can be removed through various purification techniques, including acid treatment, thermal annealing, and filtration. Post-treatment processes like chemical functionalization and defect healing can also help improve the electrical conductivity and mechanical strength of CNTs.4. Alignment and dispersion: The properties of CNT-based composites are highly dependent on the alignment and dispersion of CNTs within the matrix. Improved alignment can be achieved through techniques like electric field-assisted assembly, magnetic alignment, and shear-induced alignment. Proper dispersion can be ensured by using appropriate surfactants, solvents, or functionalization of CNTs to enhance their compatibility with the matrix material.5. Coating and doping: Coating CNTs with conductive materials like metals or conductive polymers can further enhance their electrical conductivity. Doping CNTs with heteroatoms like nitrogen, boron, or phosphorus can also modify their electronic properties and improve their performance in electronic devices and nanocomposites.6. Hybrid structures: Combining CNTs with other nanomaterials like graphene, metal nanoparticles, or other carbon allotropes can result in hybrid structures with enhanced electrical and mechanical properties. These hybrid structures can be tailored for specific applications in high-performance electronics and nanocomposites.By implementing these strategies, the synthesis of carbon nanotubes can be improved to enhance their electrical conductivity and mechanical strength, making them more suitable for use in high-performance electronics and nanocomposites.