For 10 points, name this type of fullerene, an allotrope of carbon which is cylindrical.
The size of these molecules can be obtained from the radial breathing mode of their Raman spectrum, which also contains a large G peak. The HIPCO method is used to synthesize these compounds. The difference between the n and m unit vector indices indicate whether they are metallic or semiconducting, and isomerizations causes Stone-Wales defects in these molecules. Their optical properties are shown on a Kataura plot, and their chiral configurations include zig-zag and armchair. They have some of the highest (*) Young's modulus and Bulk modulus of any substance, which can be created from the laser ablation, arc discharge, or chemical vapor deposition methods. Among their applications include supercapacitors and space elevators, and they're basically rolled-up graphene. For 10 points, name this type of fullerene, an allotrope of carbon which is cylindrical.
The size of these molecules can be obtained from the radial breathing mode of their Raman spectrum, which also contains a large G peak.
Carbon nanotubes [prompt on fullerene]