The present invention relates to a field emission device comprising an anode and a cathode, wherein said cathode includes carbon nanotubes nanotubes which have been subjected to energy, plasma, chemical, or mechanical treatment. The present invention also relates to a field emission cathode comprising...http://www.google.de/patents/US7960904?utm_source=gb-gplus-sharePatent US7960904 - Field emission devices using carbon nanotubes modified by energy, plasma, chemical or mechanical treatment
