Nanoscale fibers drawn from multiwalled carbon nanotubes have strengths comparable to spider silk. Replacing metal wires in electronic textiles with these super-strong yarns could lead to important new functionalities, such as the ability to actuate (as an artificial muscle) and to store energy (as a fiber super-capacitor or battery).
• SIZE: The yarn's diameter is about 1 µm. The nanotubes from which it is being drawn are each about 10 nm in diameter.
• IMAGING TOOL: Scanning electron microscope