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https://doi.org/10.1109/JSEN.2010.2102349
Title: | Magnetically labeled GMR biosensor with a single immobilized ferrimagnetic particle agent for the detection of extremely low concentration of biomolecules | Authors: | Zhang, P. Thiyagarajah, N. Bae, S. |
Keywords: | Extremely low concentration of biomolecules ferrimagnetic particle agent magnetically labeled giant magnetoresistance (GMR) biosensor superparamagnetic nanoparticle agent |
Issue Date: | 2011 | Citation: | Zhang, P., Thiyagarajah, N., Bae, S. (2011). Magnetically labeled GMR biosensor with a single immobilized ferrimagnetic particle agent for the detection of extremely low concentration of biomolecules. IEEE Sensors Journal 11 (9) : 1927-1934. ScholarBank@NUS Repository. https://doi.org/10.1109/JSEN.2010.2102349 | Abstract: | It was numerically and experimentally demonstrated that "one giant magnetoresistance (GMR) biosensor + single ferrimagnetic nanoparticle or micro particle sensor agent" architecture is more technically suitable for the detection of extremely low concentration of biomolecules than the "one GMR biosensor + single superparamagnetic nanoparticle sensor agent" architecture. The large remnant magnetization of a single immobilized ferrimagnetic nano or micro particle sensor agent that allows for, producing a sufficiently large stray magnetic field, maintaining negligibly small variation of interaction factor (IF) formed between the agent and the free layer (sensing layer) of the GMR biosensor, and a larger "effective sensing area" directly corresponding to a practically larger optimized sensor size, were found to be the main physical reasons for the technical promises. © 2006 IEEE. | Source Title: | IEEE Sensors Journal | URI: | http://scholarbank.nus.edu.sg/handle/10635/56558 | ISSN: | 1530437X | DOI: | 10.1109/JSEN.2010.2102349 |
Appears in Collections: | Staff Publications |
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