Detection of magnetic nanoparticles using simple AMR sensors in Wheatstone bridge
p. 98-102
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2017
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oai:112.137.131.14:VNU_123-580412017-09-30T19:59:41Z Detection of magnetic nanoparticles using simple AMR sensors in Wheatstone bridge L.K. Quynh B.D. Tu D.X. Dang D.Q. Viet L.T. Hien D.T. Huong Giang N.H. Duc Anisotropic magnetoresistance Wheastone bridge Magnetic sensor Magnetic nanoparticle detection p. 98-102 Wheatstone bridges incorporating a serially connected ensemble of simple AMR elements of Ni80Fe20 film were produced, targeting an application of a pinned magnetic field along the sensing magneto-resistor length. For the optimal dimension, the magnetoresistive element with length l ¼ 4 mm, width w ¼ 150 mm and thickness t ¼ 5 nm still shows a rather modest AMR ratio (of about 0.85% only). However, the resulting bridge exhibits a sensitivity as large as 2.15 mV/Oe. This is according to a standard sensitivity of 1.80 mV/V/Oe and a detection limit better than 10 6 emu, which is almost doubled with respect to that in the typical commercial AMR devices and is comparable with Permalloy based PHE sensor. This is suitable to detect the superparamagnetic fluid of 50 nm-Fe3O4-chitosan. 2017-08-23T09:05:30Z 2017-08-23T09:05:30Z 2016 Article 2468-2284 http://repository.vnu.edu.vn/handle/VNU_123/58041 en application/pdf ĐHQGHN |
| institution |
Vietnam National University, Hanoi |
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VNU Library & Information Center |
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Vietnam |
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VNU Digital Repository |
| language |
English |
| topic |
Anisotropic magnetoresistance Wheastone bridge Magnetic sensor Magnetic nanoparticle detection |
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Anisotropic magnetoresistance Wheastone bridge Magnetic sensor Magnetic nanoparticle detection L.K. Quynh B.D. Tu D.X. Dang D.Q. Viet L.T. Hien D.T. Huong Giang N.H. Duc Detection of magnetic nanoparticles using simple AMR sensors in Wheatstone bridge |
| description |
p. 98-102 |
| format |
Article |
| author |
L.K. Quynh B.D. Tu D.X. Dang D.Q. Viet L.T. Hien D.T. Huong Giang N.H. Duc |
| author_facet |
L.K. Quynh B.D. Tu D.X. Dang D.Q. Viet L.T. Hien D.T. Huong Giang N.H. Duc |
| author_sort |
L.K. Quynh |
| title |
Detection of magnetic nanoparticles using simple AMR sensors in Wheatstone bridge |
| title_short |
Detection of magnetic nanoparticles using simple AMR sensors in Wheatstone bridge |
| title_full |
Detection of magnetic nanoparticles using simple AMR sensors in Wheatstone bridge |
| title_fullStr |
Detection of magnetic nanoparticles using simple AMR sensors in Wheatstone bridge |
| title_full_unstemmed |
Detection of magnetic nanoparticles using simple AMR sensors in Wheatstone bridge |
| title_sort |
detection of magnetic nanoparticles using simple amr sensors in wheatstone bridge |
| publisher |
ĐHQGHN |
| publishDate |
2017 |
| url |
http://repository.vnu.edu.vn/handle/VNU_123/58041 |
| _version_ |
1680966681290080256 |