Method for fabricating high purity gold foil

Abstract

The present invention provides a method for forming high purity gold foil. The method primarily includes the steps described as follows. Gold bullion is positioned in a vacuum environment and then vaporized using electrical process and thus becomes powder. Next, the gold powder suspended above the gold bullion is attracted and temporarily accumulated on the surface of the substrate due to the static electricity applied on the substrate. The particles of the gold powder gather and become the high purity gold foil.

What is claimed is:  
     
         1 . A method for forming high purity gold foil, comprising the steps as follows: 
 gold bullion positioned in a vacuum environment being vaporized using electrical process and thus becoming powder;    using static electricity to make said gold powder suspended above the gold bullion be attracted and temporarily accumulated on a surface of a substrate, thereby temporarily gathering particles of the gold powder.    
     
     
         2 . The method according to  claim 1 , wherein said gold powder has a diameter of about 0.03 micrometer.  
     
     
         3 . The method according to  claim 1  or  2 , wherein said gold foil is easy to be dissolved in water.