| http://www.w3.org/ns/prov#value | - That is, the producing method of the electron source of the present invention is a method for producing an electron source which includes a carbon nanotube as the field emission part, and a support member for supporting the carbon nanotube, and method includes the steps of: forming the support member using a porous material with large numbers of pores; and forming a carbon deposition film of a cyl
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