@article{SisLab2268,
          volume = {7},
           month = {August},
          author = {Thi Hien Le and Khanh Quynh Le and Thi Huyen Vu and Dinh Tu Bui and Phuong DM and Nhung PH and Thi Huong Giang Do and Huu Duc Nguyen},
           title = {DNA-magnetic bead detection using disposable cards and the anisotropic magnetoresistive sensor},
       publisher = {IOP Publishing},
         journal = {Advances in Natural Sciences: Nanoscience and Nanotechnology},
           pages = {045006},
            year = {2016},
             url = {https://eprints.uet.vnu.edu.vn/eprints/id/eprint/2268/},
        abstract = {A disposable card incorporating specific DNA probes targeting the 16 S rRNA gene of
Streptococcus suis was developed for magnetically labeled target DNA detection. A singlestranded
target DNA was hybridized with the DNA probe on the SPA/APTES/PDMS/Si asprepared
card, which was subsequently magnetically labeled with superparamagnetic beads for
detection using an anisotropic magnetoresistive (AMR) sensor. An almost linear response
between the output signal of the AMR sensor and amount of single-stranded target DNA varied
from 4.5 to 18 pmol was identified. From the sensor output signal response towards the mass of magnetic beads which were directly immobilized on the disposable card surface, the limit of detection was estimated about 312 ng ferrites, which corresponds to 3.8 {\ensuremath{\mu}}emu. In comparison with DNA detection by conventional biosensor based on magnetic bead labeling, disposable cards are featured with higher efficiency and performances, ease of use and less running cost with respects to consumables for biosensor in biomedical analysis systems operating with immobilized bioreceptor}
}