Gradient metallic structure and surface treatment to produce a gradient metallic structure
US12060648B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 25, 2022 |
| Grant date | Aug 13, 2024 |
| Priority date | — |
| Expiry date | Jan 31, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/658
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for microengineering a gradient structure on a metal surface. A metal surface including at least first, second, and third metal surface regions is exposed to a metal-removing agent. A portion of surface metal atoms is removed by the metal-removing agent in each of the first, second, and third metal surface regions. Sequential metal removal processes expose only the second and third regions to the metal-removing agent, followed by exposing only the third region to the metal-removing agent. A gradient metal surface is formed having different properties in each of the first, second, and third metal surface regions. In a further aspect, quantitative surface-enhanced Raman spectroscopy may be performed using the treated metal surface. An amount of an analyte is determined based on its position in one of the first, second, or third metal surface regions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.