Frank18711(½ð±Ò+3): Thank you for giving me so much information 2011-04-03 10:08:47
Many techniques have been developed based on different physical effects to measure the electronic work function of a sample. They can be classified into two groups: the absolute method and relative method.
Absolute electron emission method£º
Photoemission
Thermionic emission
Field electron emission
Electron tunneling (STM)
Relative contact potential difference method£º
Kelvin probe force microscope. It is not a good method because of limited success (potential ¡°drifting,¡± no absolute reference, lack of sensitivity).