Method of manufacture of colloidal rod particles as nanobar codes
Synthetic methods for the manufacture of segmented nanoparticles are described.
1. A method for the manufacture of a freestanding segmented nanoparticle by the deposition of a plurality of materials inside a template, comprising:
a) causing deposition of a first material into a pore of said template;
b) causing deposition of a second material into said pore of said template, wherein the deposition of at least one of said first material and said second material is electrochemical deposition; and
c) releasing said segmented nanoparticle from said template to provide a freestanding segmented nanoparticle having a length from 10 nm to 50 μm and a width from 5 nm to 50 μm, wherein said freestanding segmented nanoparticle comprises 50 or fewer segments.
2. The method of claim 1 wherein said segmented nanoparticle has a length from 1-15 μm and a width from 30 nm to 2 μm.
3. The method of claim 1 wherein said first and second materials are selected from the group consisting of a metal, a metal chalcogenide, a metal oxide, a metal sulfide, a metal selenide, a metal telluride, a metal alloy, a metal nitride, a metal phosphide, a metal antimonide, a semiconductor, a semi-metal, an organic compound or material, a inorganic compound or material, a particulate layer of material and a composite material.
4. The method of claim 1 wherein said first or second material is a metal.
5. The method of claim 4 wherein said metal is selected from the group consisting of silver, gold, copper, nickel, palladium, platinum, cobalt, rhodium, and iridium.
6. The method of claim 1 wherein said template is selected from the group consisting of an Al 2 O 3 membrane, a photolithographically prepared template, a porous polycarbonate membrane, a zeolite and a block copolymer.
7. The method of claim 1 wherein an electrode is placed on or in proximity to one surface of said template, and said template is placed in contact with a first plating solution to deposit said first material, and is placed in contact with a second plating solution to deposit said second material.
8. The method of claim 1 wherein said segmented nanoparticles has a width of at least 500 nm.
9. The method of claim 1 wherein said segmented nanoparticle has a width of at least 1 μm.
10. The method of claim 1 wherein said segmented nanoparticle has a width of at least 2 μm.
11. The method of claim 1 wherein at least one of said segments has a length of at least 10 nm.
12. The method of claim 1 wherein at least one of said segments has a length of at least 50 nm.
13. The method of claim 1 wherein said plurality of materials comprises at least 3 materials.
14. The method of claim 1 wherein said plurality of materials comprises at least 4 materials.
15. The method of claim 1 wherein said plurality of materials comprises at least 5 materials.
16. A method for the manufacture of a freestanding segmented nanoparticle by the deposition of a plurality of materials inside a template, comprising:
a) causing deposition of a first material into a pore of said template;
b) causing deposition of a second material into said pore of said template, wherein the deposition of at least one of said first material and said second material is electrochemical deposition; and
c) releasing said segmented nanoparticle from said template to provide a freestanding segmented nanoparticle having a length from 10 nm to 50 μm and a width from 5 nm to 50 μm, wherein at least one of said segments has a length of at least 10 nm.
17. The method of claim 16 wherein said segmented nanoparticle has a length from 1-15 μm and a width from 30 nm to 2 μm.
18. The method of claim 16 wherein said segmented nanoparticle has a width of at least 500 nm.
19. The method of claim 16 wherein said segmented nanoparticle has a width of at least 1 μm.
20. The method of claim 16 wherein said segmented nanoparticle has a width of at least 2 μm.
21. The method of claim 16 wherein said freestanding segmented nanoparticle comprises about 50 or fewer segments.
22. The method of claim 16 wherein at least one of said segments has a length of at least 50 nm.
23. The method of claim 16 wherein said plurality of materials comprises at least 3 materials.
24. The method of claim 16 wherein said plurality of materials comprises at least 4 materials.
25. The method of claim 16 wherein said plurality of materials comprises at least 5 materials.