FIELD: physics.
SUBSTANCE: invention provides a method of controlling excitation of marker particles in a biosensor, particularly a biosensor employing frustrated total internal reflection (FTIR). When applying a predefined excitation force to the marker particles and determining the effect of the applied excitation force in space or on the binding surface of the sensor cassette of the biosensor device, control with excitation force feedback is used.
EFFECT: providing a biosensor which is adapted to carry out the method according to the invention.
9 cl, 2 ex, 3 dwg
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