Microelectrode arrays

Claim 2

A microelectrode array for use in electrochemical analysis, comprising: a conductive minigrid having a plurality of vertical filaments and a plurality of horizontal filaments woven together, said minigrid having a measuring end; means for mounting said minigrid defining a measuring surface; and wherein said horizontal filaments of said minigrid are disposed essentially parallel to said measuring surface and said vertical filaments of said minigrid are disposed essentially perpendicular to said measuring surface, and said measuring end of said minigrid is located adjacent said measuring surface such that said measuring end of said minigrid forms an array of discrete conductive surfaces defined by end portions of said vertical filaments of said minigrid.

Claim 3

The microelectrode according to claim 1 wherein said array is linear.

Claim 4

The microelectrode according to claim 1 wherein said array is rectangular.

Claim 5

The microelectrode according to claim 1 wherein said array is circular or multicircular.

Claim 6

The microelectrode according to claim 1 wherein said minigrid has a filament density of approximately 10 to 1000 filaments per inch.

Claim 7

The microelectrode according to claim 1 wherein the ratio of the spacing of said vertical filaments to the width of said vertical filaments in said minigrid is greater than 7.

Claim 8

The microelectrode according to claim 1 wherein said vertical and horizontal filaments of said minigrid are metal wires.

Claim 9

The microelectrode according to claim 1 wherein said vertical filaments have a maximum width dimension greater than 1 μm but less than 20 μm.

Claim 10

The microelectrode according to claim 1 wherein the spacing between said horizontal filaments is greater than the spacing between said vertical filaments.

Claim 11

A microelectrode for use in electrochemical analysis, comprising: a minigrid having a plurality of vertical filaments and a plurality of horizontal filaments woven together, each said vertical filament defining a measuring end; mounting means for supporting said minigrid, said mounting means defining a measuring surface, encasing means for encasing said minigrid and said mounting means; and wherein said horizontal filaments are disposed parallel to said measuring surface and said vertical elements are disposed perpendicular to said measuring surface and said minigrid is located between said mounting means and said encasing means.

Claim 12

A microelectrode for use in electrochemical analysis, comprising: a minigrid having a plurality of vertical filaments and a plurality of horizontal filaments woven together, each said vertical filament defining a measuring end; mounting means for supporting said minigrid, said mounting means defining a measuring surface, encasing means for encasing said minigrid and said mounting means; and wherein said horizontal filaments are disposed parallel to said measuring surface and said vertical elements are disposed perpendicular to said measuring surface and said minigrid is located between said mounting means and said encasing means.

Claim 13

The microelectrode according to claim 10 wherein each measuring end is located adjacent to said measuring surface to define a plurality of discrete conductive surfaces.

Claim 14

The microelectrode according to claim 10 wherein said encasing means defines a surface which is coplanar with said measuring surface.

Claim 15

The microelectrode according to claim 12 wherein said measuring ends of said vertical filaments are coplanar with said measuring surface and define an array of microdisk electrodes.

Claim 16

The microelectrode according to claim 13 wherein said array of microdisk electrodes is linear.

Claim 17

The microelectrode according to claim 13 wherein said array of microdisk electrodes is rectangular.

Claim 18

The microelectrode according to claim 13 wherein said array of microdisk electrodes is circular or multicircular.

Claim 19

The microelectrode according to claim 10 wherein said minigrid has approximately 90 filaments per inch.

Claim 20

The microelectrode according to claim 10 wherein the ratio of the spacing of said filaments to the width of said filaments in said minigrid is approximately 14.

Claim 21

The microelectrode according to claim 10 wherein said vertical and horizontal filaments of said minigrid are metal wires.

Claim 22

The microelectrode according to claim 10 wherein said vertical and horizontal filaments have a maximum width dimension greater than 1 μm but less than 20 μm.

Claim 23

A microdisk electrode array for use in electrochemical analysis of solutions, comprising: a cylinder formed of a precast electro-inactive material, said cylinder having a substantially planar end defining a measuring surface, a minigrid having a plurality of vertical filaments and a plurality of horizontal filaments woven together, said minigrid extending around said precast cylinder and having a measuring end located adjacent to said measuring surface and a coupling end distal from said measuring surface, said measuring end defining a circular array of discrete contact surfaces; a conductive wire for receiving the electrical signals from said minigrid; means for coupling said conductive wire to said coupling end of said minigrid; and an encasing layer of electro-inactive material encasing said minigrid and said cylinder, said encasing layer extending from said measuring surface toward said coupling end of said minigrid.

Claim 24

A microdisk electrode array for use in electrochemical analysis of solutions, comprising: a cylinder formed of a precast electro-inactive material, said cylinder having a substantially planar end defining a measuring surface, a minigrid having a plurality of vertical filaments and a plurality of horizontal filaments woven together, said minigrid extending around said precast cylinder and having a measuring end located adjacent to said measuring surface and a coupling end distal from said measuring surface, said measuring end defining a circular array of discrete contact surfaces; a conductive wire for receiving the electrical signals from said minigrid; means for coupling said conductive wire to said coupling end of said minigrid; and an encasing layer of electro-inactive material encasing said minigrid and said cylinder, said encasing layer extending from said measuring surface toward said coupling end of said minigrid.

Claim 25

The electrode according to claim 21 wherein said electro-inactive material of said cylinder and said encasing layer are both formed of an epoxy material.

Claim 26

The electrode according to claim 21 wherein said minigrid has approximately 90 filaments per inch.