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US 2023/0037586 A1Published application
Method for maskless patterning of metal alloys
AssigneeUniversity of Iowa Research Foundation
InventorsHongtao Ding, Avik Samanta, Wuji Huang
Life of this patent
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Abstract
The disclosure relates to maskless, laser-assisted methods for making a metal surface comprising at least one of hydrophobic and hydrophilic regions; and at least one of micro- and nanostructured regions.
Claims20
A maskless method of making a metal surface comprising at least one hydrophobic region and at least one hydrophilic region, the method comprising:
- first treating at least one portion of a first major surface of a metal piece along a laser scan path to obtain a first treated surface;
- second treating the first treated surface with a composition comprising a hydrophobic surface modifier to obtain a hydrophobic first treated surface;
- third treating at least one portion of the hydrophobic first treated surface of the metal piece along a laser scan path to obtain a second treated surface;
- and
- fourth treating the second treated surface with a composition comprising a hydrophilic surface modifier to obtain a hydrophilic first treated surface;
- first treating at least one portion of a first major surface of a metal piece along a laser scan path to obtain a first treated surface;
- second treating the first treated surface with a composition comprising a hydrophilic surface modifier to obtain a hydrophilic first treated surface;
- third treating at least one portion of the hydrophilic first treated surface of the metal piece along a laser scan path to obtain a second treated surface;
- and
- fourth treating the second treated surface with a composition comprising a hydrophobic surface modifier to obtain a hydrophobic first treated surface;
- first treating at least one first portion of a first major surface of a metal piece along a laser scan path to obtain a first treated surface;
- second treating the first treated surface with a composition comprising a hydrophobic surface modifier to obtain a hydrophobic first treated surface;
- third treating at least a second portion of a first major surface of a metal piece along a laser scan path to obtain a second treated surface, the second portion different from the first portion;
- and
- fourth treating the second treated surface with a composition comprising a hydrophilic surface modifier to obtain a hydrophilic first treated surface;
- or
- first treating at least one first portion of a first major surface of a metal piece along a laser scan path to obtain a first treated surface;
- second treating the first treated surface with a composition comprising a hydrophilic surface modifier to obtain a hydrophilic first treated surface;
- third treating at least a second portion of a first major surface of a metal piece along a laser scan path to obtain a second treated surface, the second portion different from the first portion;
- and
- fourth treating the second treated surface with a composition comprising a hydrophobic surface modifier to obtain a hydrophobic first treated surface.
18 more elements
The method of claim 13, wherein the arithmetical mean roughness Ra of the at least one hydrophobic region is less than the arithmetical mean roughness Ra of the at least one hydrophilic region.
Dependencies are inferred from the claim text.