Orientation of materials via application of a magnetic field and use of magnetically-oriented devices and device component

Patent metadata

Field	Value
Publication number	US-11827520-B2
Application number	US-201716333547-A
Country	US
Kind code	B2
Filing date	Sep 19, 2017
Priority date	Sep 19, 2016
Publication date	Nov 28, 2023
Grant date	Nov 28, 2023

Abstract

Discussed herein are methods of orienting one-dimensional and two-dimensional materials via the application of stationary and rotating magnetic fields. The oriented one-dimensional and two-dimensional materials may exhibit macroscopic properties, and may be employed in various measurement devices as well as thermal and electrical shielding applications or battery devices. A single 1D or 2D material may be suspended in another material such as dionized water, polymer(s), or other materials during the orientation, and the suspension may remain as a liquid or may be solidified or partially solidified to secure the oriented material(s) into place. The 1D and 2D materials that respond to the magnetic orientation may further cause other elements of the suspension to be oriented in a similar manner.

First claim

The invention claimed is:

1. A method comprising:
applying, to a suspension of a first component and a second component encased in a receptacle, a first magnetic field of a first intensity from a first direction relative to a first plane when the suspension is in proximity of a predetermined measurement area, and wherein the second component comprises at least one 1-dimensional or a 2-dimensional material, wherein the second component is present in the suspension from about 0.01 wt. % to about 0.2 wt. %, and wherein the first magnetic field comprises a strength of less than 0.24 Torr;
orienting, in response to the application of the first magnetic field, a plurality of particles of the second component in a predetermined orientation relative to the first plane; and
determining, based on the orientation response, a plurality of characteristics of the first magnetic field,
wherein the second component comprises 2D few-layer graphene flakes produced via exfoliation of highly-oriented pyrolytic graphite (HOPG), wherein the few-layer graphene flakes comprise from 1-3 graphene layers, and wherein the second component does not comprise magnetic particles or paramagnetic particles.

2. The method of claim 1 , further comprising forming the suspension by using a first component comprising at least one of deionized water, a basic solution, an acidic solution, or a polymer.

3. The method of claim 1 , further comprising, subsequent to orienting the plurality of particles, modifying the first component, wherein modifying the first component comprises removing or solidifying the first component.

4. The method of claim 1 , wherein each of the 1 to 3 layers is from 0.1 to 0.7 nm thick.

5. The method of claim 1 , further comprising forming the suspension using the second component wherein a plurality of particles of the second component are from about 0.4 nm to about 100 nm in diameter.

6. The method of claim 1 , further comprising forming the suspension using the second component wherein a plurality of particles of the second component are from 0.3 nm to about 100 nm thick.

7. The method of claim 4 , further comprising forming the suspension wherein the second component comprises a plurality of graphene particles from about 0.5 μm to about 50.0 μm in maximum diameter and from about 0.4 nm to about 100 nm in thickness.

8. The method of claim 1 , wherein applying the first magnetic field further comprises:
applying a rotating magnetic field, wherein an angle of the first magnetic field with respect to the first plan changes over a predetermined period of time relative to the first plane, wherein the plurality of particles changes orientation in response to receiving the rotating magnetic field during the predetermined time such that the plurality of particles mirror a motion of a changing direction of the magnetic field.

9. The method of claim 3 , wherein the second component comprises two or more materials selected from one-dimensional or two-dimensional materials, and wherein a first material of the second component comprises the few-layer graphene flakes and is oriented in response to the first magnetic field and wherein the orienting of the first material causes a second material of the second component to change its orientation.

10. A device comprising:
a suspension disposed in a vessel, wherein the suspension comprises a first component and a second component, wherein the second component is present in the suspension from about 0.01 wt. % to about 0.2 wt. %, wherein the second component comprises a plurality of particles comprising 2D few-layer graphene flakes produced via exfoliation of highly-oriented pyrolytic graphite (HOPG) graphite, wherein the few-layer graphene flakes comprise from 1-3 graphene layers, and wherein the second component does not comprise magnetic particles or paramagnetic particles, and
a processor,
wherein, in a first state, at least some particles of the second component comprise a first orientation relative to a first plane, and wherein the at least some particles of the second component are configured to, in second state, responsive to a magnetic field having a strength of less than 0.24 Torr, change from the first orientation to a plurality of subsequent, orientations that are different from the first orientation in response to a different magnetic field, and
wherein the processor is configured to determine a plurality of characteristics of the magnetic field.

11. The device of claim 10 , wherein, in the second state, other particles in the suspension change from the first orientation to the plurality of subsequent, different orientations in response to the change in orientation of the at least some particles.

12. The device of claim 11 , wherein the at least some particles are in contact with the other particles to cause the orientation change in the other particles.

13. The device of claim 11 , wherein the other particles do not comprise graphene.

14. A device comprising:
a plurality of particles comprising 2D few-layer graphene flakes produced via exfoliation of highly-oriented pyrolytic graphite (HOPG), wherein the few-layer graphene flakes comprise from 1-3 graphene layers, wherein the plurality of particles are disposed in a suspension in a vessel, wherein the second component is present in the suspension from about 0.01 wt. % to about 0.2 wt. %, and wherein, in a first state, the plurality of particles comprise a first orientation relative to a first plane, and
a processor,
wherein the plurality of particles are pure in that they do not comprise magnetic particles or paramagnetic particles,
wherein the plurality of particles are configured to, in second state, change from the first orientation to a plurality of subsequent orientations that are different from the first orientation in response to a magnetic field having a strength of less than 0.24 Torr, and
wherein the processor is configured to determine a plurality of characteristics of the magnetic field.

15. The device of claim 14 , further comprising the plurality of oriented graphene particles disposed in the suspension comprising deionized water or polymers.

16. The device of claim 14 , wherein the plurality of graphene particles comprises a plurality of first dimensions.

17. The device of claim 14 , further comprising a second plurality of particles disposed in the vessel or in a second vessel, wherein the second plurality of particles comprises a plurality of second dimensions.

18. The device of claim 17 , wherein at least one dimension of the plurality of second dimensions is different than the at least one dimension of the plurality of first dimensions.

19. The method of claim 1 further comprising removing or modifying the first component such that the plurality of particles of the second component are locked in place.

20. The method of claim 1 , wherein the apparatus consists of the first component and the second component, wherein the first component consists of water and the second component consists of the graphene flakes.

Assignees

• Univ Houston System

Inventors

• Bao Jiming
• Lin Feng
• Zhu Zhuan
• Wang Zhiming

Classifications

• Y10T428/30

  Self-sustaining carbon mass or layer with impregnant or other layer · CPC title

• B82Y30/00

  Nanotechnology for materials or surface science, e.g. nanocomposites · CPC title

• C01B32/194 Primary

  After-treatment · CPC title

• C01B32/21

  After-treatment · CPC title

• H01G11/36

  Nanostructures, e.g. nanofibres, nanotubes or fullerenes · CPC title