Carbon nanotubes are cylindrical structures formed by rolling sheets of graphene into tubes. They have unique physical and chemical properties that make them attractive for a wide range of applications in materials science, electronics, and biology. Carbon nanotubes are known for their exceptional mechanical strength, thermal conductivity, and electrical properties. Research in this area focuses on synthesizing and characterizing carbon nanotubes, understanding their unique properties, and exploring their potential applications in various fields. Some common research topics include functionalizing carbon nanotubes for specific applications, studying their toxicity and environmental impact, and developing new methods for large-scale production.