East china university of science and technology

Patent metadata

Field	Value
Publication number	US-2016265103-A1
Application number	US-201315030580-A
Country	US
Kind code	A1
Filing date	Oct 31, 2013
Priority date	Oct 31, 2013
Publication date	Sep 15, 2016
Grant date	—

Abstract

Methods described herein generally relate to producing patterned graphene. The method may include irradiating at least one focal point on a surface of a metal substrate with a laser beam in the presence of carbon dioxide, wherein the laser beam is generated by an ultra-short pulse laser; and causing the laser beam to move relative to the surface of the metal substrate such that the at least one focal point is displaced along a pattern on the surface, thereby producing a patterned graphene. Apparatuses for producing patterned graphene are also disclosed.

First claim

1 . A method for producing a patterned graphene, the method comprising:
irradiating at least one focal point on a surface of a metal substrate with a laser beam in the presence of carbon dioxide, wherein the laser beam is generated by an ultra-short pulse laser; and causing the laser beam to move relative to the surface of the metal substrate such that the at least one focal point is displaced along a pattern on the surface, thereby producing the patterned graphene.

2 . The method of claim 1 , further comprising isolating the patterned graphene.

3 . The method of claim 1 , wherein the laser beam passes through an optical component prior to irradiating the focal point.

4 . The method of claim 3 , wherein the optical component comprises an optical lens.

5 . The method of claim 1 , wherein the ultra-short pulse laser comprises an attosecond laser, a femtosecond laser, an excimer laser, or a nano-laser.

6 . The method of claim 1 , wherein causing the laser beam to move relative to the surface of the metal substrate comprises moving the laser beam.

7 . The method of claim 1 , wherein causing the laser beam to move relative to the surface of the metal substrate comprises moving the metal substrate.

8 . The method of claim 1 , wherein causing the laser beam to move relative to the surface of the metal substrate comprises controlling the relative movement by a computer.

9 . The method of claim 1 , wherein the ultra-short pulse laser operates at a power of about 0.5 mW/pulse to about 100 mW/pulse.

10 . The method of claim 1 , wherein the ultra-short pulse laser operates at a wavelength of about 100 nm to about 1000 nm.

11 . The method of claim 1 , wherein the laser beam moves relative to the metal substrate at a scanning speed of about 0.005 mm/s to about 10 mm/s.

12 . The method of claim 1 , wherein the metal substrate comprises zinc, aluminum, magnesium, or a combination thereof.

13 . The method of claim 1 , wherein the carbon dioxide is solid carbon dioxide, gaseous carbon dioxide, or both.

14 . An apparatus for producing a patterned graphene, the apparatus comprising:
an ultra-short pulse laser configured to produce a laser beam; and a housing configured to accommodate a metal substrate and carbon dioxide, wherein the housing comprises an optical port configured to allow irradiation of at least one focal point on a surface of the metal substrate by the laser beam.

15 . The apparatus of claim 14 , wherein the ultra-short pulse laser comprises an attosecond laser, a femtosecond laser, an excimer laser, or a nano-laser.

16 . The apparatus of claim 14 , further comprising a lens positioned between the ultra-short pulse laser and the metal substrate.

17 . The apparatus of claim 14 , further comprising a support structure that secures the laser relative to the housing.

18 . The apparatus of claim 17 , wherein the support is configured to allow movement of the laser beam relative to the metal substrate in the housing.

19 . The apparatus of claim 14 , further comprising a computer coupled to the ultra-short pulse laser and configured to control the ultra-short pulse laser.

20 - 21 . (canceled)

22 . The apparatus of claim 14 , wherein the carbon dioxide is at least one of solid carbon dioxide or gaseous carbon dioxide.

Assignees

• Univ East China Science & Tech

Inventors

• Zhao Chongjun
• Dong Jianbo
• Dong Xiangmao
• Qian Xiuzhen

Classifications

• Y10S977/734

  Fullerenes, i.e. graphene-based structures, such as nanohorns, nanococoons, nanoscrolls or fullerene-like structures, e.g. WS2 or MoS2 chalcogenide nanotubes, planar C3N4, etc. · CPC title

• C23C14/5813 Primary

  using lasers · CPC title

• B82Y30/00

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

• B82Y40/00

  Manufacture or treatment of nanostructures · CPC title

• C01B32/186

  by chemical vapour deposition [CVD] · CPC title