COMPOUND EXCITATION PROTOCOL FOR MAGNETIC BIOSENSOR DEVICE Russian patent published in 2013 - IPC G01N27/72 

FIELD: physics.

SUBSTANCE: magnetic biosensor device according to the invention has a sensor cartridge (1) for receiving the sample to be analysed, at least one electromagnetic unit for generating a magnetic field on the sensitive surface (2) of the sensor cartridge (1), a detection means for detecting presence of magnetic particles (10) near the sensitive surface (2). The detection means has a light source for directing light onto the sensitive surface (2) at the angle of total internal reflection and a detector for detecting light reflected from the sensitive surface (2). The electromagnetic unit is capable of periodically generating a magnetic field having at least a first and a second strength, wherein the ratio of the time for applying the first magnetic field strength to the time period for applying the first and second magnetic field strength varies during measurement. Also disclosed is a method of applying a magnetic field to the sensitive surface of a magnetic biosensor device.

EFFECT: increasing overall speed or uniformity of an optical signal in a magnetic biosensor device using the current equipment configuration.

13 cl, 6 dwg