Plasmonic-magnetic bifunctional nanotubes for biological applications

Patent metadata

Field	Value
Publication number	US-10330600-B2
Application number	US-201715398134-A
Country	US
Kind code	B2
Filing date	Jan 4, 2017
Priority date	Jun 4, 2013
Publication date	Jun 25, 2019
Grant date	Jun 25, 2019

Abstract

The present invention includes nanotubes or rods, methods and arrays using plasmonic-magnetic bifunctional nanotubes or rods comprising: one or more silica nanotubes or rods; one or more nanomagnets embedded in a portion of the silica nanotubes or rods; and plasmonic metal nanoparticles uniformly coating in or on at least a portion of the surface of the nanomagnets and the silica nanotubes surface-coated.

First claim

What is claimed is:

1. A plasmonic-magnetic bifunctional nanocapsule comprising:
a silica nanotube having a metallic rod embedded therein; and
metallic nanoparticles coated on a surface of the silica nanotube.

2. The nanocapsule of claim 1 , wherein the silica nanotube shell thickness is from 70 nm to 150 nm.

3. The nanocapsule of claim 1 , wherein the nanocapsule has a diameter from 100 nm to 0.01 cm.

4. The nanocapsule of claim 1 , wherein the metallic nanoparticles comprise at least one of silver, gold, cobalt, rhodium, iridium, copper, platinum, or palladium.

5. The nanocapsule of claim 1 , wherein the metallic rod comprises nickel, platinum, silver, or gold.

6. The nanocapsule of claim 1 , wherein the metallic rod consists of nickel.

7. The nanocapsule of claim 1 , wherein the metallic rod is a segmented metallic rod.

8. The nanocapsule of claim 7 , wherein the segmented metallic rod comprises segments of silver or gold, and segments of nickel.

9. The nanocapsule of claim 1 , wherein the metallic nanoparticles are coated on the outer surface of the silica nanotube.

10. The nanocapsule of claim 9 , wherein the entire outer surface of the silica nanotubes is coated with metallic nanoparticles.

11. The nanocapsule of claim 1 , wherein a portion of the silica nanotube is hollow.

12. The nanocapsule of claim 11 , wherein the metallic nanoparticles are coated on the outer and the inner surface of the silica nanotube.

13. The nanocapsule of claim 1 , wherein the silica nanotube shell thickness is from 100 nm to 1 μm.

14. The nanocapsule of claim 1 , further comprising an active agent.

15. The nanocapsule of claim 14 , wherein the nanocapsule is surface functionalized to bind the active age.

Assignees

• Univ Texas

Inventors

• Fan Donglei
• Xu Xiaobin

Classifications

• H01F1/0063

  in a non-magnetic matrix, e.g. granular solids (granular films H01F10/007) · CPC title

• Y10T428/2956

  Glass or silicic fiber or filament with metal coating · CPC title

• G01N33/5432

  Liposomes or microcapsules · CPC title

• G01N21/658 Primary

  enhancement Raman, e.g. surface plasmons · CPC title

• H01F1/0072

  one dimensional, i.e. linear or dendritic nanostructures · CPC title