Method for manipulating flake-like material and method for producing article containing flake-like material

Patent metadata

Field	Value
Publication number	US-12459818-B2
Application number	US-202318317467-A
Country	US
Kind code	B2
Filing date	May 15, 2023
Priority date	Jun 13, 2022
Publication date	Nov 4, 2025
Grant date	Nov 4, 2025

Abstract

A method for manipulating a flake-like material, the method comprising: (2) a step of grounding a first probe of which a tip is covered with a first resin film on the flake-like material left still on a substrate, and pressing the first probe to pick up the flake-like material; (3) a step of grounding a second probe of which a tip is covered with a second resin film on a surface on an opposite side to the first probe of the flake-like material picked up by the first probe in the step (2), and pressing the second probe; and (4) a step of transferring the flake-like material picked up by the first probe to the second probe by separating the first probe and the second probe, wherein (i) a thickness ratio (thickness B/thickness A) of a thickness B of the second resin film to a thickness A of the first resin film when pressing is not performed is less than 1.

First claim

What is claimed is:

1 . A method for manipulating a flake-like material, the method comprising:
(1) a step of preparing a first probe of which a tip is covered with a first resin film and a second probe of which a tip is covered with a second resin film; (2) a step of grounding the first probe of which the tip is covered with the first resin film on the flake-like material left still on a substrate, and pressing the first probe to pick up the flake-like material; (3) a step of grounding the second probe of which the tip is covered with the second resin film on a surface on an opposite side to the first probe of the flake-like material picked up by the first probe in the step (2), and pressing the second probe; and (4) a step of transferring the flake-like material picked up by the first probe to the second probe by separating the first probe and the second probe, wherein (i) a thickness ratio (thickness B/thickness A) of a thickness B of the second resin film to a thickness A of the first resin film when pressing is not performed is less than 1.

2 . The manipulation method according to claim 1 , wherein the thickness ratio (thickness B/thickness A) is 0.8 or less.

3 . The manipulation method according to claim 1 , wherein the flake-like material is a two-dimensional material.

4 . The manipulation method according to claim 1 , wherein the first resin film and the second resin film are each a polyvinyl chloride resin film.

5 . The manipulation method according to claim 4 , wherein
the tip of the first probe and the tip of the second probe are each made from a silicone resin, and the flake-like material is graphene or hexagonal boron nitride.

6 . The manipulation method according to claim 1 , wherein
the first resin film is formed from a polyvinyl chloride resin containing (A-a) 100 parts by mass of a polyvinyl chloride resin and (A-b) α parts by mass of a plasticizer, and the second resin film is formed from a polyvinyl chloride resin containing (B-a) 100 parts by mass of a polyvinyl chloride resin and (B-b) β parts by mass of a plasticizer, where the α and the β meet the condition: α>β.

7 . A method for producing an article containing a flake-like material,
the method comprising manipulating the flake-like material using the manipulation method according to claim 1 .

8 . A method for producing an article containing a flake-like material,
the method comprising manipulating the flake-like material using the manipulation method according to claim 2 .

9 . A method for producing an article containing a flake-like material,
the method comprising manipulating the flake-like material using the manipulation method according to claim 3 .

10 . A method for producing an article containing a flake-like material,
the method comprising manipulating the flake-like material using the manipulation method according to claim 4 .

11 . A method for producing an article containing a flake-like material,
the method comprising manipulating the flake-like material using the manipulation method according to claim 5 .

12 . A method for producing an article containing a flake-like material,
the method comprising manipulating the flake-like material using the manipulation method according to claim 6 .

Assignees

• Univ Tokyo
• Riken Technos Corp

Inventors

• Machida Tomoki
• Onodera Momoko
• Hashimoto Taketo

Classifications

• C01P2004/24

  Nanoplates, i.e. plate-like particles with a thickness from 1-100 nanometer · CPC title

• C08J2327/06

  Homopolymers or copolymers of vinyl chloride · CPC title

• C01P2002/76

  by a space-group or by other symmetry indications · CPC title

• C01B32/194 Primary

  After-treatment · CPC title

• C08J5/18

  Manufacture of films or sheets · CPC title