Carbon Nanotube Electron Sources: From Electron Beams to Energy Conversion and Optophononics
Figure 6
Electron stimulated field-emission from carbon nanotubes being imaged in an SEM: (a) several single-walled carbon nanotubes resting on a silicon dioxide surface and connected to an electrode on the right side. The white square is the catalyst island used for nanotube growth; (b) upon the application of an electric field near the onset of field-emission, the nanotube tips appear as bright spots, indicating the emission of a large number of electrons every time the primary beam of the microscope scans past those points; (c) the tips become brighter under slightly higher applied electric field (reprinted with permission from [32]. Copyright 2004, AIP Publishing LLC).
