Formation of encapsulated nanoribbons in dielectric nanotubes

Patent metadata

Field	Value
Publication number	US-12435221-B2
Application number	US-202318455966-A
Country	US
Kind code	B2
Filing date	Aug 25, 2023
Priority date	Aug 30, 2022
Publication date	Oct 7, 2025
Grant date	Oct 7, 2025

Abstract

An encapsulated nanoribbon having a nanotube of a dielectric material, wherein the nanotube has a diameter and a first length, and a nanoribbon at least partially encapsulated within the nanotube, the nanoribbon including a transition metal dichalcogenide and having a width and a second length, the second length being coextensive with the first length, and the width being no greater than the diameter. Also disclosed are methods of making the encapsulated nanoribbon.

First claim

What is claimed is:

1. A method of making an encapsulated nanoribbon comprising:
reacting an encapsulated first precursor with a second precursor to provide an encapsulated nanoribbon, wherein reacting the encapsulated first precursor with the second precursor comprises contacting the encapsulated first precursor with a vapor of the second precursor at an elevated temperature for a time period sufficient to provide the encapsulated nanoribbon.

2. The method of claim 1 , wherein the encapsulated first precursor comprises a transition metal salt.

3. The method of claim 1 , wherein the encapsulated first precursor is encapsulated by a nanotube, the nanotube comprising a dielectric material.

4. The method of claim 3 , wherein the dielectric material comprises hexagonal boron nitride.

5. The method of claim 1 , wherein the second precursor comprises a chalcogen.

6. The method of claim 1 , wherein the elevated temperature is between about between about 700 and 1100° C.

7. The method of claim 1 , wherein the time period is between about 1 and 60 minutes.

8. A method of making an encapsulated nanoribbon comprising encapsulating a first precursor within a nanotube to provide an encapsulated first precursor, and
reacting the encapsulated first precursor with a second precursor to provide an encapsulated nanoribbon.

9. A method of making an encapsulated nanoribbon comprising heating at least a first precursor in the presence of a nanotube to an elevated temperature for a time period sufficient to form an encapsulated nanoribbon, wherein the first precursor comprises a transition metal dichalcogenide.

10. The method of claim 9 , wherein the elevated temperature is between about 500 and 1400° C.

11. The method of claim 9 , wherein the first precursor and nanotube are heated to the elevated temperature in a reduced pressure environment.

12. The method of claim 9 , wherein the first precursor is heated in the presence of a second precursor and a nanotube.

13. The method of claim 12 , wherein the first precursor comprises a transition metal oxides and the second precursor comprises a chalcogen.

Assignees

• Honda Motor Co Ltd

Inventors

• Harutyunyan Avetik R
• Li Xufan

Classifications

• C23C16/4417

  Methods specially adapted for coating powder · CPC title

• C01P2004/03

  obtained by SEM · CPC title

• C01P2004/04

  obtained by TEM, STEM, STM or AFM · CPC title

• C01P2006/40

  Electric properties · CPC title

• C01P2004/13

  Nanotubes · CPC title