Method of making a biosensor
AssigneeRoche Diagnostics Operations, Inc.
InventorsRaghbir S. Bhullar, Eric R. Diebold, Brian S. Hill, Nigel A. Surridge, Douglas P. Walling
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Abstract
A method of making a biosensor is provided. The biosensor includes an electrically conductive material on a base and electrode patterns formed on the base, the patterns having different feature sizes. The conductive material is partially removed from the base using broad field laser ablation so that less than 90% of the conductive material remains on the base and that the electrode pattern has an edge extending between two points. A standard deviation of the edge from a line extending between two points is less than about 6 μm.
Claims46
A method of making a biosensor, the method comprising the steps of:
- providing an electrically conductive material on a base;
- and
- forming electrode patterns on the base using broad field laser ablation, wherein at least two electrode patterns have different feature sizes, wherein at least one electrode pattern has at least one edge extending between two points, a standard deviation of the edge from a line extending between two points is less than about 6 μm.
A method of making a biosensor, the method comprising the steps of:
- providing an electrically conductive material on a base;
- and
- forming electrode patterns on the base using broad field laser ablation, wherein at least two electrode patterns have different feature sizes, wherein the at least one electrode pattern has electrode fingers that cooperate with one another to define an electrode gap having a pre-determined width value, a standard deviation of the gap from the width value is less than about 4 μm.
A method of making a biosensor, the method comprising the steps of:
- providing an electrically conductive material on a base;
- and
- partially removing the conductive material using laser ablation from the base so that less than 90% of the conductive material remains on the base and at least one electrode pattern is formed from the conductive material, the at least one electrode pattern having an edge extending between two points, a standard deviation of the edge from a line extending between two points being less than about 6 μm.
A method of making a biosensor, the method comprising the steps of:
- providing an electrically conductive material on a base,
- forming electrode patterns on the base using broad field laser ablation, wherein at least two electrode patterns have different feature sizes, and
- extending a cover over the base, the cover and base cooperating to define a sample-receiving chamber and at least a portion of the electrode patterns are positioned in the sample-receiving chamber.
Dependencies are inferred from the claim text.