Patent ID: 8486689

Claim:
A microelectronic sensor device for the examination of target particles that are bound to binding sites at a binding surface of a carrier, the microelectronic sensor device comprising: a sensor unit having a sensitive region, wherein the sensor unit comprises: a generator configured to generate an input signal, to modulate the input signal at a first modulation frequency, and to provide the modulated input signal to the carrier, and a detector configured to receive from the carrier an output signal which is generated in response to the modulated input signal, wherein the output signal is modulated at the first modulation frequency and changes depending upon the presence of target particles in the sensitive region of the sensor unit, and wherein the detector is configured to generate, in response to the output signal, a sensor signal that is indicative of the presence of target particles in a sensitive region of the sensor unit; an actuation unit configured to selectively induce a movement of the bound target particles with respect to the sensitive region of the sensor unit: and an evaluation module configured to evaluate the sensor signal taking the induced movement of the target particles into account and further taking into account the first modulation frequency.