Microelectrodes and process for shielding same
First Claim
Patent Images
1. A method of shielding microelectrodes, including the steps of:
- coating the exterior surface of a microelectrode having a central throughopening by vacuum evaporation techniques to provide a thin layer of conductive material thereabout; and
removing a controlled layer of conductive material from a circumferential tip area of said microelectrode leaving a tip region thereof exposed.
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Abstract
A shielded microelectrode process and product wherein the microelectrode is coated by vacuum evaporation techniques with a thin layer of silver; the silver from the microelectrode tip region is removed to a depth of no greater than substantially 20 micrometers by contact with memory; and the microelectrode is dipped into a thermosetting wax in liquid form whereby as the wax solidifies the silver is coated thereby below the tip region.
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Citations
11 Claims
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1. A method of shielding microelectrodes, including the steps of:
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coating the exterior surface of a microelectrode having a central throughopening by vacuum evaporation techniques to provide a thin layer of conductive material thereabout; and removing a controlled layer of conductive material from a circumferential tip area of said microelectrode leaving a tip region thereof exposed. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A shielded microelectrode, comprising:
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a microelectrode body having a throughopening extending from a shank end of said body to the operative tip end thereof; a thin layer of conductive material applied to said microelectrode body by vacuum evaporation, said conductive material adhering in surrounding relation to the exterior of said body short of the tip thereof to thereby leave an exposed exterior tip portion of no greater than substantially 20 micrometers, and a layer of insulating material covering said conductive material and a portion of said exposed tip. - View Dependent Claims (9, 10, 11)
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Specification