Method for manufacturing chiral nanostructure and apparatus for forming helical magnetic field to manufacture chiral nanostructure

Patent metadata

Field	Value
Publication number	US-12343794-B2
Application number	US-202017775861-A
Country	US
Kind code	B2
Filing date	Nov 4, 2020
Priority date	Nov 12, 2019
Publication date	Jul 1, 2025
Grant date	Jul 1, 2025

Abstract

A method of manufacturing a chiral nano-structure having chirality using a magnetic field according to one embodiment of the present disclosure includes a magnetic field forming operation that forms a magnetic field; a particle arranging operation that arranges at least two nanoparticles in the magnetic field; and a magnetic field adjusting operation that adjusts at least one of a magnetic flux density, a magnetization direction, and a spatial range of the magnetic field, in which in the magnetic field adjusting operation, the arrangement of the nanoparticles arranged in the magnetic field is aligned to correspond to a structure of the magnetic field, and the entire structure is formed as a nano-structure having chirality.

First claim

The invention claimed is:

1. A method of manufacturing a chiral nano-structure, the method comprising:
a magnetic field forming operation that forms a magnetic field;
a particle arranging operation that arranges at least two nanoparticles in the magnetic field; and
a magnetic field adjusting operation to form a nanostructure, wherein the magnetic field adjusting operation adjusts at least one of a magnetic flux density, a magnetization direction, and a spatial range of the magnetic field,
wherein,
in the magnetic field adjusting operation, the arrangement of the nanoparticles arranged in the magnetic field is aligned to correspond to a structure of the magnetic field,
the nanostructure has chirality, and
the at least two nanoparticles comprise magnetoplasmonic particles.

2. The method of claim 1 ,
wherein in the magnetic field forming operation, the magnetic field is a spiral magnetic field.

3. The method of claim 1 ,
wherein in the magnetic field forming operation, the magnetic field is a spiral magnetic field formed by relatively rotating at least two magnetic substances.

4. The method of claim 1 ,
wherein the magnetoplasmonic particles comprise core-shell particles having a core;

and a shell surrounding at least a part of the surface of the core and including a component different from that of the core.

5. The method of claim 4 ,
wherein in the core-shell particle, any one of the core and the shell comprises a magnetic component and the other comprises a metal component.

6. The method of claim 5 ,
wherein the metal component comprises one selected from the group consisting of silver (Ag), gold (Au), platinum (Pt), copper (Cu), palladium (Pd), iridium, osmium, rhodium, ruthenium, nickel (Ni), cobalt (Co), iron (Fe), manganese (Mn), chromium (Cr), vanadium (V), titanium (Ti), aluminum (Al), zinc (Zn), cadmium (Cd), and combinations thereof.

7. The method of claim 5 ,
wherein the magnetic component comprises one selected from the group consisting of iron oxide (Fe 3 O 4 ), nickel oxide (NiO), cobalt oxide (CO 3 O 4 ), iron (Fe), nickel (Ni), cobalt (Co), and combinations thereof.

8. The method of claim 1 ,
wherein in the particle arrangement operation, the nanoparticles are arranged in a state of being dispersed in a solvent or a dispersion medium.

9. The method of claim 8 ,
wherein the solvent or the dispersion medium comprises one selected from the group consisting of distilled water, deionized water, alcohol, organic solvent, polymer, and combinations thereof.

10. The method of claim 1 ,
wherein in the magnetic field forming operation, the magnetic field is a spiral magnetic field formed by relatively rotating at least two magnetic substances, and
in the magnetic field adjusting operation, the magnetization direction is adjusted by changing at least one of an angle at which the at least two magnetic substances are relatively rotated and the degree at which the at least two magnetic substances are parallel to each other.

11. The method of claim 1 ,
wherein in the magnetic field forming operation, the magnetic field is a spiral magnetic field formed by relatively rotating at least two magnetic substances, and
in the magnetic field adjusting operation, the spatial range of the magnetic field is adjusted by changing a straight distance between the at least two magnetic substances.

12. The method of claim 1 ,
wherein in the magnetic field forming operation, the magnetic field is a spiral magnetic field formed by relatively rotating at least two magnetic substances, and
in the magnetic field adjusting operation, the magnetic flux density of the magnetic field is adjusted by changing at least one of magnetic forces of the at least two magnetic substances and a straight distance between the at least two magnetic substances.

Assignees

• Iac In Nat Univ Chungnam

Inventors

• Lee Jae Beom
• Jeong Ki Jae

Classifications

• B22F2202/05

  Use of magnetic field · CPC title

• B82Y40/00

  Manufacture or treatment of nanostructures · CPC title

• B82B3/0061

  Methods for manipulating nanostructures · CPC title

• B82B1/007

  Processes for preserving or protecting existing structures · CPC title

• B22F9/24

  starting from liquid metal compounds, e.g. solutions · CPC title