Device for gas sensing
First Claim
1. A method for the fabrication of a catalytic field-effect sensor which comprises patterning a substrate to form thereon a micro structured surface having a pattern of interconnected grooves or channels, and depositing a conductive layer over the micro structured surface.
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Accused Products
Abstract
In order to obtain long time stability and usefulness for gas sensitive field-effect devices a micro structured surface is obtained below the final conducting layer. The conductive layer in the trenches or grooves will not only be protected to some extent but also they can constitute a conductive net with edges or boundaries that will remain essentially unchanged even if material is continuously lost along the borderline. The structure can be obtained in the layer laying directly below the conductive layer or in deeper lying layers with intermediate layers with even thickness.
29 Citations
25 Claims
- 1. A method for the fabrication of a catalytic field-effect sensor which comprises patterning a substrate to form thereon a micro structured surface having a pattern of interconnected grooves or channels, and depositing a conductive layer over the micro structured surface.
- 13. A catalytic field-effect sensor having an outer conductive layer arranged on a micro structured surface, wherein the micro structured surface comprises a pattern of interconnected grooves or channels.
- 15. A method for the fabrication of a catalytic field-effect sensor comprising depositing a conductive layer over a micro structured surface on a substrate, and polishing the conductive layer to work conductive material from protrusions or ridges on the micro structured surface.
Specification