What is a Nanotube Antenna?

The new carbon nanotube antenna is a 10-micron-long, 4-micron-thick fiber rope that contains about 30 million carbon nanotubes. These nanotubes have different electrical conductivity (band gap), and are distributed inside and outside the fiber rope Floor. The energy gap of the carbon nanotubes contained in the inner layer of the new carbon nanotube antenna is smaller; the energy gap of the outer carbon nanotubes is higher. This is important because excitons may flow from a high energy bandgap to a low energy bandgap. This means that the excitons in the outer layer flow to the inner layer. Therefore, when light hits an object, all excitons flow to the center of the fiber rope and gather there. The solar collection efficiency of the new carbon nanotube antenna is 100 times that of ordinary photovoltaic cells.