Switching of a Carbon Nanotube Chiral Junction Imaged with Nanometer Spatial Resolution

Switching of a Carbon Nanotube Chiral Junction Imaged with Nanometer Spatial Resolution. Chiral junctions of carbon nanotubes have the potential of serving as optically or electrically controllable switches. To investigate optoelectronic tuning of a chiral junction, we stamp carbon nanotubes onto a transparent gold surface and locate a tube with a semiconducting-metallic junction. We image topography, laser absorption at 532 nm, and measure I-V curves of the junction with nanometer spatial resol