Single-walled carbon nanotubes (SWNTs) are promising electronic materials with unique electrical properties. They can act as either metals or semiconductors, with characteristics comparable to or exceeding those of traditional materials. However, challenges in manufacturing and reproducibility remain significant obstacles. SWNTs are formed by rolling a single graphene sheet into a cylinder. Their electrical behavior is determined by their structure, with metallic and semiconducting properties arising from the arrangement of carbon atoms. Metallic SWNTs exhibit high conductivity and current density, while semiconducting SWNTs show high mobility and transconductance. These properties make SWNTs attractive for electronic applications. The electrical properties of SWNTs are influenced by factors such as contact resistance, scattering from phonons and defects, and gate voltage. Metallic SWNTs have high mean-free paths and low resistivity, while semiconducting SWNTs exhibit high mobility and can be used in field-effect transistors (FETs). The performance of SWNT-based devices is also affected by the quality of the contacts and the presence of defects. Despite their promising properties, the manufacturing of SWNT-based devices remains a challenge. Techniques for growing and fabricating SWNTs are being developed, but achieving consistent, reproducible results is difficult. Current methods include chemical vapor deposition (CVD) and wet processing, but these often result in tangled or bundled nanotubes that require further separation and purification. The potential applications of SWNTs in electronics are vast, including use in sensors, transistors, and other nanoscale devices. However, the integration of SWNTs with other materials and systems is still an area of active research. While significant progress has been made in understanding the properties of SWNTs, further advancements in manufacturing and device integration are needed to fully realize their potential in electronic applications.Single-walled carbon nanotubes (SWNTs) are promising electronic materials with unique electrical properties. They can act as either metals or semiconductors, with characteristics comparable to or exceeding those of traditional materials. However, challenges in manufacturing and reproducibility remain significant obstacles. SWNTs are formed by rolling a single graphene sheet into a cylinder. Their electrical behavior is determined by their structure, with metallic and semiconducting properties arising from the arrangement of carbon atoms. Metallic SWNTs exhibit high conductivity and current density, while semiconducting SWNTs show high mobility and transconductance. These properties make SWNTs attractive for electronic applications. The electrical properties of SWNTs are influenced by factors such as contact resistance, scattering from phonons and defects, and gate voltage. Metallic SWNTs have high mean-free paths and low resistivity, while semiconducting SWNTs exhibit high mobility and can be used in field-effect transistors (FETs). The performance of SWNT-based devices is also affected by the quality of the contacts and the presence of defects. Despite their promising properties, the manufacturing of SWNT-based devices remains a challenge. Techniques for growing and fabricating SWNTs are being developed, but achieving consistent, reproducible results is difficult. Current methods include chemical vapor deposition (CVD) and wet processing, but these often result in tangled or bundled nanotubes that require further separation and purification. The potential applications of SWNTs in electronics are vast, including use in sensors, transistors, and other nanoscale devices. However, the integration of SWNTs with other materials and systems is still an area of active research. While significant progress has been made in understanding the properties of SWNTs, further advancements in manufacturing and device integration are needed to fully realize their potential in electronic applications.