Heating structure, method of manufacturing heating structure, and aerosol generating device including heating structure

Patent metadata

Field	Value
Publication number	US-2024407440-A1
Application number	US-202318268817-A
Country	US
Kind code	A1
Filing date	Mar 31, 2023
Priority date	Apr 1, 2022
Publication date	Dec 12, 2024
Grant date	—

Abstract

A heating structure for generating heat by surface plasmon resonance includes a substrate including a first surface and a second surface opposite to the first surface, and a first metal prism positioned on the first surface to at least partially form a void area on the first surface.

First claim

1 . A heating structure for generating heat by surface plasmon resonance, the heating structure comprising:
a substrate comprising a first surface and a second surface opposite to the first surface; and a first metal prism positioned on the first surface to at least partially form a void area on the first surface.

2 . The heating structure of claim 1 , wherein
the first metal prism comprises a first base surface facing the first surface, a second base surface opposite to the first base surface, and a plurality of side surfaces between the first base surface and the second base surface.

3 . The heating structure of claim 2 , wherein
a distance between the first base surface and the second base surface is less than or equal to about 10 nm.

4 . The heating structure of claim 2 , wherein
at least one of the first side surface and the second side surface is substantially curved.

5 . The heating structure of claim 1 , wherein
the void area has a diameter ranging from about 300 nm to about 600 nm.

6 . The heating structure of claim 1 , wherein
the first metal prism comprises metal particles that resonate with light having a wavelength of about 380 nm to about 780 nm.

7 . The heating structure of claim 1 , further comprising:
a second metal prism to at least partially form the void area together with the first metal prism.

8 . The heating structure of claim 7 , wherein
the first metal prism and the second metal prism are separated from each other.

9 . The heating structure of claim 1 , wherein
the first metal prism defines an entire perimeter of the void area.

10 . A method of manufacturing a heating structure for generating heat by surface plasmon resonance, the method comprising:
providing a substrate; applying a plurality of beads on the substrate; depositing a plurality of metal particles on the substrate and the plurality of beads; and removing the plurality of beads to form a void area surrounded by at least one metal prism on the substrate.

11 . The method of claim 10 , wherein
the plurality of metal particles are deposited such that the metal prism has a thickness less than or equal to about 10 nm.

12 . The method of claim 10 , wherein
the plurality of beads have a diameter ranging from about 450 nm to about 600 nm.

13 . The method of claim 10 , further comprising:
etching the plurality of beads.

14 . The method of claim 13 , wherein
the plurality of beads are etched such that the plurality of beads have a diameter ranging from about 300 nm to about 400 nm.

15 . An aerosol generating device, comprising:
a light source; and the heating structure according to claim 1 , the heating structure configured to receive light from the light source.

Assignees

• Kt & G Corp

Inventors

• Lee Wonkyeong
• Sunwoo Paul Joon
• Lee Moon Sang

Classifications

• H05B6/06

  Control, e.g. of temperature, of power · CPC title

• H05B6/108

  for heating a fluid · CPC title

• A24F40/20

  Devices using solid inhalable precursors · CPC title

• A24F40/10

  Devices using liquid inhalable precursors · CPC title

• A24F40/46 Primary

  Shape or structure of electric heating means · CPC title