%0 Journal Article %A Emmanuel Spanakis %A Marios Barberoglou %A Vassilia Zorba %A Panagiotis Tzanetakis %A Costas Fotakis %B Applied Physics Letters %D 2010 %G eng %N 3 %R 10.1063/1.3291672 %T Metal coated silicon spike cold-electron emitters show improvement of performance with operation %V 96 %8 01/2010