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Microelectrodes and amperometric assays

  • US 5,512,489 A
  • Filed: 02/08/1993
  • Issued: 04/30/1996
  • Est. Priority Date: 12/04/1989
  • Status: Expired due to Term
First Claim
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1. In a method of making a microelectrode comprising a layer of electrically insulating material having an array of apertures formed therein and electrically conductive material visible through the apertures, the improvement wherein the insulating layer is applied over a carbon-containing conducting material supported on an electrically insulating substrate, laser energy is then applied to selected portions of said insulating layer to form said apertures therein by laser photo-ablation and .thereby expose the conducting material, and to vitrify carbon in areas of said carbon-containing conducting material exposed through said apertures.

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