Microparticles
First Claim
Patent Images
1. A method of forming particles, comprising:
- accelerating a first stream comprising a first liquid; and
vibrating the first stream, to form particles;
wherein the particles have an average diameter of at most 100 μ
m.
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Abstract
A method of forming particles comprises accelerating a stream comprising a liquid; and vibrating the stream, to form particles. The particle may have a diameter that is smaller than the diameter of the nozzle used to form the stream, allowing for the formation of micro- and nano-sized particle.
182 Citations
59 Claims
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1. A method of forming particles, comprising:
-
accelerating a first stream comprising a first liquid; and
vibrating the first stream, to form particles;
wherein the particles have an average diameter of at most 100 μ
m.- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 29, 30)
the second stream comprises a second liquid. -
8. The method of claim 7, wherein the second stream surrounds the first stream.
-
9. The method of claim 1, wherein the accelerating comprises applying charge to the first stream.
-
10. The method of claim 9, wherein
a second stream comprising a second liquid surrounding the first stream, and the accelerating further comprises accelerating the second stream. -
11. The method of claim 10, wherein the particles comprise a core and a shell.
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12. The method of claim 11, wherein the particles comprise a plurality of shells.
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13. The method of claim 1, further comprising forming the first stream by passing the first liquid through a nozzle.
-
14. The method of claim 13, wherein the nozzle has a diameter greater than ½
- an average diameter of the particles.
-
15. The method of claim 14, wherein the nozzle has a diameter at least the average diameter.
-
16. The method of claim 1, wherein the particles have an average diameter of at most 50 μ
- m.
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17. The method of claim 16, wherein the particles have an average diameter of 10 nm to 50 μ
- m.
-
18. The method of claim 16, wherein the particles have an average diameter of 1 μ
- m to 50 μ
m.
- m to 50 μ
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19. The method of claim 1, wherein the particles have an average diameter of 50 to 100 Ξ
- m, and 90% of the particles have a diameter that is within 2% of an average diameter of the particles.
-
20. The method of claim 1, wherein the particles have an average diameter of 1 to 50 μ
- m, and 90% of the particles have a diameter that is within 1 μ
m of an average diameter of the particles.
- m, and 90% of the particles have a diameter that is within 1 μ
-
21. The method of claim 1, wherein
the accelerating is a step for accelerating the first stream, and the vibrating is a step for vibrating the first stream. -
29. Particles, prepared by the method of claim 19.
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30. Particles, prepared by the method of claim 20.
-
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22. A method of forming particles, comprising:
-
accelerating a first stream comprising a first liquid;
wherein the accelerating comprises applying charge to the first stream, and the particles comprise a core and a shell. - View Dependent Claims (23, 24, 25, 26, 27, 28)
wherein the nozzle has a diameter at least ½ - the average diameter of the particles.
-
27. The method of claim 22, wherein the particles have an average diameter of at most 100 μ
- m.
-
28. The method of claim 22, wherein the particles have an average diameter of 10 nm to 50 μ
- m.
-
-
31. A method of forming particles, comprising:
-
accelerating a first stream comprising a first liquid into a surrounding liquid; and
vibrating the first stream, to form particles. - View Dependent Claims (32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52)
the second stream comprises a second liquid. -
38. The method of claim 32, wherein the second stream surrounds the first stream.
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39. The method of claim 31, wherein the accelerating comprises applying charge to the first stream.
-
40. The method of claim 39, wherein
a second stream comprising a second liquid surrounding the first stream, and the accelerating further comprises accelerating the second stream. -
41. The method of claim 40, wherein the particles comprise a core and a shell.
-
42. The method of claim 41, wherein the particles comprise a plurality of shells.
-
43. The method of claim 31, further comprising forming the first stream by passing the first liquid through a nozzle.
-
44. The method of claim 43, wherein the nozzle has a diameter greater than ½
- an average diameter of the particles.
-
45. The method of claim 44, wherein the nozzle has a diameter at least the average diameter of the particles.
-
46. The method of claim 31, wherein the particles have an average diameter of at most 100 μ
- m.
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47. The method of claim 31, wherein the particles have an average diameter of at most 50 μ
- m.
-
48. The method of claim 47, wherein the particles have an average diameter of 10 nm to 50 μ
- m.
-
49. The method of claim 48, wherein the particles have an average diameter of 1 μ
- m to 50 μ
m.
- m to 50 μ
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50. The method of claim 31, wherein the particles have an average diameter of 50 to 100 μ
- m, and 90% of the particles have a diameter that is within 2% of an average diameter of the particles.
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51. The method of claim 31, wherein the particles have an average diameter of 1 to 50 μ
- m, and 90% of the particles have a diameter that is within 1 μ
m of an average diameter of the particles.
- m, and 90% of the particles have a diameter that is within 1 μ
-
52. The method of claim 31, wherein
the accelerating is a step for accelerating the first stream, and the vibrating is a step for vibrating the first stream.
-
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53. A method of forming particles, comprising:
-
accelerating a first stream comprising a first liquid into a surrounding liquid;
wherein the accelerating comprises applying charge to the first stream, and the particles comprise a core and a shell. - View Dependent Claims (54, 55, 56, 57, 58, 59)
wherein the nozzle has a diameter at least ½ - the average diameter of the particles.
-
58. The method of claim 53, wherein the particles have an average diameter of at most 100 μ
- m.
-
59. The method of claim 53, wherein the particles have an average diameter of 10 nm to 50 μ
- m.
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Specification