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Frank18711(½ð±Ò+1): лл²ÎÓë 2011-04-02 21:54:56
enquan123(½ð±Ò+1): ¹ÄÀø½»Á÷ 2011-04-02 23:07:06
Frank18711(½ð±Ò+1): лл²ÎÓë 2011-04-02 21:54:56
enquan123(½ð±Ò+1): ¹ÄÀø½»Á÷ 2011-04-02 23:07:06
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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). |
4Â¥2011-04-03 09:54:42
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