Patent ID: 7524351

Claim:
A metal particle composition comprising: a first metal core including a particle size in a range of less than or equal to about 20 nanometer (nm), wherein the first metal core is selected from copper, silver, gold, lead, and tin; a second metal shell, wherein the second metal shell is selected from copper, silver, gold, lead, and tin, and wherein the metal particle composition includes a melting temperature equal to or below about 300° C.; and a third metal shell, wherein the second metal shell is substantially configured in a inner shell, wherein the third metal shell is substantially configured in a outer shell, wherein the first metal includes a first melting temperature, wherein the third metal includes a third melting temperature, and wherein the first melting temperature is lower than the third melting temperature, and wherein the first metal core includes gold, wherein the second metal shell includes tin, and wherein the tin includes about 20% of the first metal core and the second metal shell.