Carrier substrate for Raman spectrometric analysis
First Claim
1. Carrier substrate for surface-enhanced Raman spectrometric analysis of substances, comprising a carrier layer (12) and a multiplicity of nanobodies (14) formed on at least one side of the carrier layer (12), characterised in that each nanobody (14) has a rod-like stem area (16) lying on the carrier layer (12) and at least two, preferably 2 to 4, branch elements (20) formed on the stem area (16), and the density of the branch elements (20) is at least 108/cm2.
0 Assignments
0 Petitions
Accused Products
Abstract
A process for surface-enhanced Raman spectrometric analysis of substances comprises the steps of providing substances to be analyzed, providing a carrier-layer with a multiplicity of nanobodies for receiving the substances to be analyzed, the multiplicity of nanobodies formed on at least one side of the carrier layer, whereby each nanobody has a rod-like stem area lying on the carrier layer and at least two branch elements formed on the stem area, and the density of the branch elements is a least 108/cm2; locating the substances on the carrier layer; and irradiating the substances to provide a Raman scatter.
-
Citations
16 Claims
- 1. Carrier substrate for surface-enhanced Raman spectrometric analysis of substances, comprising a carrier layer (12) and a multiplicity of nanobodies (14) formed on at least one side of the carrier layer (12), characterised in that each nanobody (14) has a rod-like stem area (16) lying on the carrier layer (12) and at least two, preferably 2 to 4, branch elements (20) formed on the stem area (16), and the density of the branch elements (20) is at least 108/cm2.
-
7. Process for production of a carrier substrate for surface-enhanced Raman spectrometric analysis of substances, comprising a carrier layer (12) and a multiplicity of nanobodies (14) formed on the carrier layer (12) each with at least one end tip (21), where each nanobody (14) has a maximum cross sectional diameter (d) between 10 and 250 nm and a height (h) of 30 nm to 5 μ
- m and the density of the end tips (21) is at least 108/cm2, characterised in that
a) in a first step a mould body (22) with a mould body surface (23) mirror-inverted to the required carrier substrate surface (18) is created in that a substrate body (24) of an anodisable metal is oxidised anodically in an electrolyte redissolving the metal oxide concerned, whereby at least on one substrate body surface (25) is formed a mould layer (26) of metal oxide comprising a barrier layer (28) adjacent to the substrate body surface (25) and a porous layer (30) lying on this, and the porous layer (30) contains pore cavities (36) formed mirror-inverted to the required nanobodies (14);
b) in a second step the mould body surface (23) is coated throughout by chemical and/or electrolytic methods such that the pore cavities (36) are completely filled with a coating material and also a carrier layer (12) connecting the pore cavities (36) is formed from a coating material, and the carrier layer (12) constitutes a cohesive mechanically supportive layer;
c) and in a third step the mould body (22) is removed such that at least the end tips (21) are exposed. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15, 16)
- m and the density of the end tips (21) is at least 108/cm2, characterised in that
Specification