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In order to explore the in vitro giant magnetoresistive (GMR) biodetection procedure, exchange-biased GMR sensors with a Wheatstone bridge were adopted to detect a series of concentrations of MnFe2O4 magnetic microparticle alcohol solution using a direct current in-plane magnetic field measuring method. It is revealed that the output voltage $V_{\text {out}}$ of the transfer curve in the GMR sensor...
In this paper we report the novel assembly method of a biosensor unit based on 64 pixel photodetector array with a proprietary semiconductor quantum dots (QDs) quantum well (QW) hybrid structure. There is significantly lower dark current for optimized high sensitivity detector. The capacitive trans-impedance amplifier (CTIA)-correlated double sampling (CDS) readout circuit can readout weak optical...
We have designed and developed a field deployable biosensor unit based on a novel proprietary quantum dots-quantum well hybrid structure. We analyzed in detail the detection sensitivity and in particular weak light detection and analysis of the semiconductor optoelectronic device. We designed a readout circuit and a data processing unit to handle the response signal. The sensor unit is equipped with...
A type of biosensor is recently developed using magnetostrictive particle (MSP) resonator as sensor platform and phage/antibody as bio-probe. The MSP sensors have following unique features: wireless, concentration and separation of the target species from the analytes and in-situ detection capability. The MSP sensors are very inexpensive and sensitive. All the advantages of the MSP sensors are demonstrated...
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