Journal Article

FZJ-2013-06535

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Superparamagnetic nanoparticle detection using second harmonic of magnetization response

Zhang, Y. (Corresponding author)FZJ* ; Murata, H. ; Hatsukade, Y. ; Tanaka, S.

2013
American Institute of Physics [S.l.]

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Please use a persistent id in citations: http://hdl.handle.net/2128/5717  doi:10.1063/1.4820447

Abstract: We introduce a method to improve the detection sensitivity for the magnetization M of superparamagnetic nanoparticles (MNP). The M response of MNP to an applied magnetic field H (M–H characteristics) could be divided into a linear region and a saturation region, which are separated at a transition point H k. When applying an excitation magnetic field (H ac ) with a frequency ω0 and an additional dc bias field H dc = H k, the second harmonic of M reaches the maximum due to the nonlinearity of the M–H characteristics. It is stronger than any other harmonics and responsible for small H ac without a threshold. The second harmonic selected as the readout criterion for M response of MNP is systematically analyzed and experimentally proven.

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Contributing Institute(s):

1. Bioelektronik (PGI-8)
2. Bioelektronik (ICS-8)
3. JARA-FIT (JARA-FIT)

Research Program(s):

1. 423 - Sensorics and bioinspired systems (POF2-423) (POF2-423)
2. 453 - Physics of the Cell (POF2-453) (POF2-453)

Appears in the scientific report 2013

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Database coverage:
; ; Allianz-Lizenz / DFG ; Current Contents - Life Sciences ; Current Contents - Physical, Chemical and Earth Sciences ; JCR ; Nationallizenz ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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