Low cost infrared sensors using processed single-walled carbon nanotubes

The engineering of single-walled carbon nanotubes infrared sensors are presented. The technique employs two-electrode low-frequency dielectrophoretic technique to assemble the nanotube bundles which serve as the active component of the device. The devices were assembled using both processed and unprocessed carbon nanotube samples. The Raman spectrum for the SWNTs shows a slight increase in the defect density for the processed samples which improves the devices photocurrent and response time.