Conductive ink and conductor
Ink is manufactured by mixing unoxidized metallic particles to a binder. The ink is printed on an object ( 502 ) and hardened for forming a conductor. The process is performed in an inert atmosphere or in vacuum for maintaining the electrical conductivity of the conductor ( 500 ).
1. A conductor formed from ink comprising metallic particles and a binder, wherein the metallic particles comprise at least one member selected from the group consisting of alkaline earth metals and alkali metals, and wherein the metal particles contain no radioactive metals or beryllium,
wherein a work function of said conductor is controlled by the amount of said at least one member selected from the group consisting of alkaline earth metals and alkali metals in said metal particles; and
wherein the metallic particles have an unoxidized electrically conductive surface and a protective outer layer for maintaining the electrical conductivity of the conductor in a reactive atmosphere.
2. The conductor of claim 1 , wherein the metallic particles consist of a mixture of alkaline earth metal particles and alkali metal particles.
3. The conductor of claim 1 , wherein the metallic particles consist of comprise alkaline earth metal particles and the work function of the conductor made of the ink is a function of the amount of alkaline earth metal in the conductor.
4. The conductor of claim 1 , wherein the metallic particles consist of alkali metal particles and the amount of alkali metal in the conductor is used to determine the work function of the conductor made of the ink.
5. The conductor of claim 1 , wherein metallic particles comprise magnesium.
6. The conductor of claim 1 , wherein metallic particles comprise calcium.
7. The conductor of claim 1 , wherein the metallic particles comprise a metal selected from the group consisting of magnesium and calcium.
8. The conductor of claim 1 , wherein metallic particles comprise additionally at least one metal from the groups 3 to 15 of the periodic table of the elements.
9. The conductor of claim 8 , wherein the work function of the conductor made of the ink is adjustable by the amount of the at least one metal from the groups 3 to 15 of the periodic table of the elements.