Patent ID: 9632032
Date: 2017-04-25
CPC Classifications: B82Y,G01J,G01N,H01L

Claim:
1. A method for manufacturing a substrate for surface-enhanced Raman spectography, the method comprising: creating a non-metal supporting structure on an upper surface of a support, with the supporting structure comprising at least one microstructured pattern, the microstructured pattern comprising a top and sidewalls, with the sidewalls extending according to a direction secant to a direction of the upper surface; depositing a multilayer on the supporting structure, with the multilayer comprising at least two metal layers of the same thickness and an intermediate layer arranged between the two metal layers, with each intermediate layer being carried out in a material that can be selectively etched with respect to the at least two metal layers; etching via chemical mechanical planarisation a portion of the multilayer deposited on the top of the microstructured pattern in such a way as to expose ends of each layer of the multilayer; selective etching the ends of the intermediate layers in such a way as to form cavities between the ends of two successive metal layers.