Method for producing an ablated wire

Patent metadata

Field	Value
Publication number	US-12519293-B2
Application number	US-202117519170-A
Country	US
Kind code	B2
Filing date	Nov 4, 2021
Priority date	Nov 4, 2020
Publication date	Jan 6, 2026
Grant date	Jan 6, 2026

Abstract

One aspect pertains to a method for producing an ablated wire, including providing a coated wire having a circumference and a length. The coated wire has a core, an outermost coating layer, and an outer surface. The outermost coating layer at least partially surrounds the core. A plurality of laser beams are provided. The coated wire and the plurality of laser beams are arranged with respect to each other. At least two of the plurality of laser beams are arranged at different angular positions with respect to the circumference of the coated wire. The outermost coating layer is at least partially removed by moving at least one of the plurality of laser beams with respect to the coated wire to obtain the ablated wire. At least two of the plurality of laser beams are independent of each other.

First claim

The invention claimed is:

1 . A method for producing an ablated wire, comprising:
A.] providing a coated wire having a circumference and a length, and wherein the coated wire comprises
i. a core,
ii. an outermost coating layer, wherein the outermost coating layer at least partially surrounds the core, and
iii. an outer surface;
B.] providing a plurality of laser beams; C.] arranging the coated wire and the plurality of laser beams with respect to each other, wherein at least two of the plurality of laser beams are arranged at different angular positions with respect to the circumference of the coated wire and wherein an angle between at least one pair of neighboring laser beams is in the range of 70° to 160°; D.] at least partially removing the outermost coating layer by moving the plurality of laser beams with respect to the coated wire; E.] obtaining the ablated wire;
wherein,
the plurality of laser beams are independent of each other, and
wherein one of the following applies:
a. the plurality of laser beams are laser beams of the first kind having a spectrum with a peak wavelength in range of 430 nm to 780 nm, or
b. the plurality of laser beams are laser beams of the further kind having a spectrum with a peak wavelength in the range of 10 nm to 430 nm.

2 . The method according to claim 1 , wherein at least two of the plurality of laser beams are produced by different lasers.

3 . The method according to claim 1 , wherein the outermost coating layer is at least partially removed by moving at least two of the plurality of laser beams with respect to the coated wire, and wherein the respective distances that the at least two of the plurality of laser beams move differ by less than 10% with respect to each other.

4 . The method according to claim 1 , wherein at least one of the following applies:
a. at least one of the plurality of laser beams are arranged parallel to an imaginary surface that is tangent to at least one point on the outer surface of the coated wire; b. at least one of the plurality of laser beams are arranged along an imaginary axis that passes though the coated wire.

5 . The method according to claim 1 , wherein at least two of the plurality of laser beams at least partially remove the outermost coating layer at non-overlapping sections.

6 . The method according to claim 1 , wherein at least one of the following applies:
a. at least two of the plurality of laser beams are moved, with respect to the coated wire, at the same time; b. at least two of the plurality of laser beams are moved, with respect to the coated wire, partially at the same time; c. at least two of the plurality of laser beams are moved, with respect to the coated wire, at different times.

7 . The method according to claim 1 , wherein at least one of the following applies:
a. at least two of the plurality of laser beams are arranged at different positions along the length of the coated wire; b. at least two of the plurality of laser beams are arranged at respective distances from the circumference of the coated wire, wherein the respective distances differ by less than 10% with respect to each other; c. at least two of the plurality of laser beams are arranged at different distance from the circumference of the coated wire.

8 . The method according to claim 1 , wherein the coated wire is moved with respect to at least one of the plurality of laser beams, and wherein at least one of the following applies:
a. at least one section of the coated wire is rotated by less than 5°; b. at least one section of the coated wire is moved translationally by less than 1 cm; c. at least one section of the coated wire is moved rotationally by less than 15°.

9 . The method according to claim 1 , wherein the coated wire has at least one of the following properties:
a. a diameter in the range of 40 μm to 240 μm; b. a length of at least 2000 m.

10 . The method according to claim 1 , wherein the core of the coated wire has at least one of the following properties:
a. comprises one or more metals selected from the group consisting of gold, platinum, copper, silver, tantalum, and stainless steel; b. a diameter in the range of 40 μm to 160 μm; c. an electrical conductivity in the range of 10 4 S/m to 10 8 S/m; d. a Young's modulus in the range of 10 GPa to 300 GPa.

11 . The method according to claim 1 , wherein the outermost coating layer of the coated wire has at least one of the following properties:
a. comprises at least 10 wt. %, based on the total weight of the outermost coating layer, of an organic material; b. comprises 50 wt. %, based on the total weight of the outermost coating layer, of a metal or a metal compound, or a combination thereof; c. a thickness in the range of 6 μm to 24 μm; d. an electrical conductivity in the range of 10 −8 S/m to 2×10 −2 S/m; e. a Young's modulus in the range of 0.01 MPa to 100 MPa.

12 . The method according to claim 11 , wherein the organic material is a polymer selected form the group consisting of: I.) a mixture comprising an electrically insulating polymer and a plurality of particles that comprises either a metal, or a metal compound, or a combination thereof; II.) a conductive polymer; III.) a combination of I.) and II.).

13 . The method according to claim 1 , wherein the coated wire comprises at least one intermediate coating layer, and wherein at least one of the following applies:
a. the at least one intermediate coating layer at least partially surrounds the core; b. the outermost coating layer at least partially surrounds the at least one intermediate coating layer.

14 . The method according to claim 13 , wherein the at least one intermediate coating layer has at least one of the following properties:
a. a thickness in the range of 10 μm to 40 μm; b. comprises a polymer; c. an electrical conductivity in the range of 10 −21 S/m to 10 −11 S/m; d. a Young's modulus in the range of 0.05 MPa to 5500 MPa.

15 . The method according to claim 1 , wherein at least one of the plurality of laser beams is a laser beam of the first kind, wherein a laser beam of the first kind has at least one of the following properties:
a. a pulse duration in the range of 10 fs to 500 ns; b. a pulse frequency in the range of 5 kHz to 600 kHz; c. an energy per pulse in the range of 2 μJ to 15 μJ; d. a fluence in the range of 1.0 J/cm 2 to 5.0 J/cm 2 ; e. a spot size in the range of 5 μm to 50 μm.

16 . The method according to claim 1 , wherein at least one of the plurality of laser beams is a laser beam of the further kind, wherein a laser beam of the further kind has at least one of the following properties:
a. a pulse duration in the range of 10 fs to 500 ns; b. a pulse frequency in the range of 1 kHz to 100 kHz; c. an energy per pulse in the range of 1 μJ to 50 μJ; d. a fluence in the range of 0.1 J/cm 2 to 50.0 J/cm 2 ; e. a spot size in the range of 2 μm to 50 μm.

17 . An ablated wire obtained by the method according to claim 1 , wherein the ablated wire comprises
a. a core, and b. an outermost coating layer that at least partially surrounding the core.

18 . A use of the ablated wire according to claim 17 in an electrical device.

19 . A use of the ablated wire according to claim 17 as a sensor.

Assignees

• Heraeus Deutschland Gmbh & Co Kg
• Heraeus Medical Components Llc
• Heraeus Medevio Gmbh & Co Kg

Inventors

• Gebert Jörg-Martin
• Schuster Paul
• Yu Yang
• Lauinger Thomas

Classifications

• H01B1/02 Primary

  mainly consisting of metals or alloys · CPC title

• B23K26/36

  Removing material (B23K26/55, B23K26/57 take precedence) · CPC title

• B23K2101/32

  Wires · CPC title

• H02G1/128 Primary

  using radiant energy, e.g. a laser beam · CPC title