BIOSENSOR Russian patent published in 2024 - IPC G01N33/50 G01N27/28 

FIELD: measurements.

SUBSTANCE: instruments for the analysis of biological materials. Invention relates in particular to the measurements based on methods of binding biospecific ligands by electrical means, as well as in relation to the study and analysis by measuring the active resistance of a graphene layer. A biosensor is presented that includes a substrate with a graphene chip located on it and contact pads connected to the graphene chip by at least two conductive paths. In this case, the conductive tracks are made of a layer of nickel with a thickness of no more than 5 microns, on the surface of which a layer of gold with a thickness of at least 2 microns is applied, and the width of the contact pads exceeds the width of the conductive tracks by at least 2 times. The substrate is installed in a cylindrical holder equipped with at least two spring-loaded contacts installed in the holder with the ability to connect to the contact pads.

EFFECT: increase in the accuracy of test results while simultaneously expanding the functionality of the biosensor.

5 cl, 2 dwg