Claims
- 1. A regular array of discrete, uniform metal microspheres on a substrate, wherein said metal microspheres have a spherical portion, and a flat portion in contact with said substrate, and an average density on said substrate of about 600-6,000,000 beads/cm.sup.2.
- 2. The array of microspheres of claim 1 wherein said average density of said microspheres is about 40,000-6,000,000 beads/cm.sup.2.
- 3. The array of microspheres of claim 2 wherein said average density of said microspheres is about 80,000-6,000,000 beads/cm.sup.2.
- 4. The array of microspheres of claim 1 further including an adhesive layer coated over said metal microspheres.
- 5. A population of particles wherein said particles comprise uniform metal microspheres having a nonrandom diameter and shape, said shape being partially spherical and partially flat, said diameter being less than 100 .mu.m.
- 6. The population of particles according to claim 5 wherein said microspheres are dispersed in a liquid.
- 7. The population of particles according to claim 6 wherein said liquid comprises an adhesive composition.
- 8. The population of particles as claimed in claim 7, wherein the adhesive composition is coated on a substrate.
- 9. The population of particles according to claim 5 wherein the diameter of said microspheres is about 0.2-100 .mu.m.
- 10. The population of particles according to claim 9 wherein the diameter of said microspheres is about 1-50 .mu.m.
- 11. The population of particles according to claim 5 wherein said microspheres exist as independently mobile elements.
- 12. The population of particles as claimed in claim 5, wherein the flat portion of said particles are in contact with a substrate.
- 13. A population of particles, wherein said particles comprise metal microspheres having a nonrandom distribution of diameter and shape, said shape being partially spherical and partially flat, said diameter being less than 100 .mu.m, and wherein said microspheres have 2 or more selected diameters.
Parent Case Info
This is a division of application Ser. No. 08/129,668 filed Sep. 30, 1993 now U.S. Pat. No. 5,366,140, Nov. 22, 1994.
US Referenced Citations (14)
Foreign Referenced Citations (2)
Number |
Date |
Country |
0546443A1 |
Jun 1993 |
EPX |
4262895 |
Sep 1992 |
JPX |
Divisions (1)
|
Number |
Date |
Country |
Parent |
129668 |
Sep 1993 |
|