Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/28062
Title: Detection of 10-nm superparamagnetic iron oxide nanoparticles using exchange-biased GMR sensors in wheatstone bridge
Authors: Li, L
Mak, KY
Leung, CW 
Ng, SM
Lei, ZQ
Pong, PWT
Keywords: Giant magnetoresistance (GMR)
Magnetic sensor
Superparamagnetic nanoparticles
Issue Date: 2013
Publisher: Institute of Electrical and Electronics Engineers
Source: IEEE transactions on magnetics, 2013, v. 49, no. 7, 6559174, p. 4056-4059 How to cite?
Journal: IEEE transactions on magnetics 
Abstract: We demonstrated the use of exchange-biased giant magnetoresistance (GMR) sensors in Wheatstone bridge for the detection of 10-nm superparamagnetic iron oxide nanoparticles (SPIONs). The SPIONs were synthesized via coprecipitation method, exhibiting a superparamagnetic behavior with saturation magnetization of 57 emu/g. The output voltage signal of the Wheatstone bridge exhibits log-linear function of the concentration of SPIONs (from 10 ng/ml to 0.1 mg/ml), making the sensors suitable for use as a SPION concentration detector. Thus the combination of 10 nm SPIONs and the exchange-biased GMR sensors has potential to be used in the bio-detection applications where ultra-small bio-labels are needed.
URI: http://hdl.handle.net/10397/28062
ISSN: 0018-9464
EISSN: 1941-0069
DOI: 10.1109/TMAG.2013.2237889
Appears in Collections:Journal/Magazine Article

Access
View full-text via PolyU eLinks SFX Query
Show full item record

SCOPUSTM   
Citations

10
Last Week
0
Last month
1
Citations as of Nov 30, 2017

WEB OF SCIENCETM
Citations

9
Last Week
0
Last month
0
Citations as of Nov 16, 2017

Page view(s)

58
Last Week
2
Last month
Checked on Dec 11, 2017

Google ScholarTM

Check

Altmetric



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.