Microelectrode biosensor and method therefor
First Claim
1. A biosensor comprising a conducting surface, a layer of dielectric material overlying the conducting surface, a plurality of micro electrodes constituted by a plurality of pores extending through the thickness of said dielectric layer, each pore being separated from its neighbour, a biopolymer positioned in said pores, and a counter electrode arranged such that electrical connection can be made between it and at least part of said conducting surface by a fluid to be assessed.
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Accused Products
Abstract
There is disclosed a biosensor comprising a conducting surface, a layer of dielectric material overlying the conducting surface, a plurality of micro electrodes constituted by a plurality of pores extending through the thickness of said dielectric layer, a biopolymer positioned on the conducting surface in said pores, and a counter electrode arranged such that electrical connection can be made between it and at least part of said conducting surface by a fluid to be assessed. Such a device can be made using a method comprising the steps of providing a conducting surface;
providing a layer of dielectric material adjacent to said conducting surface, said dielectric material comprising a plurality of pores extending through the thickness of the dielectric layer;
providing a biopolymer on the conducting surface in said pores; and
providing a counter electrode insulated from said conducting surface.
43 Citations
24 Claims
- 1. A biosensor comprising a conducting surface, a layer of dielectric material overlying the conducting surface, a plurality of micro electrodes constituted by a plurality of pores extending through the thickness of said dielectric layer, each pore being separated from its neighbour, a biopolymer positioned in said pores, and a counter electrode arranged such that electrical connection can be made between it and at least part of said conducting surface by a fluid to be assessed.
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15. A method of making a biosensor comprising the steps of:
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providing a conducting surface;
providing a layer of dielectric material adjacent to said conducting surface, said dielectric material comprising a plurality of pores extending through the thickness of the dielectric layer;
each pore being separated from its neighbour;
providing a biopolymer in said pores; and
providing a counter electrode insulated from said conducting surface. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22)
applying a dielectric in the form of a fluid containing it to said conducting surface;
allowing said fluid to dry; and
removing said particles.
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20. A method according to claim 19 wherein said particles and said fluid dielectric are premixed and are applied to said conducting substrate at the same time.
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21. A method according to claim 19 or claim 20, wherein said particles are water soluble and are removed by dissolution in water.
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22. A method according to claim 19 or claim 20, wherein said particles are removed by heat treatment.
Specification