Microelectrode biosensor and method therefor

US6740214B1 · kind B1 · utility

Assignee

• Isis Innovation Limited · GB

Inventors

• Peter James Dobson · Felton, GB
• Peter Leigh · Chongqing, CN
• Yasue Nakagawa · Bad Soden, DE
• Hugh A. O. Hill · Abingdon, GB

Key dates

• Filing date: Mar 12, 2001
• Grant date: May 25, 2004
• Expiry date: Mar 12, 2021

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N27/403
• WIPO field: Measurement
• WIPO sector: Instruments

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; andproviding a counter electrode insulated from said conducting surface.