Debye-Based Frequency-Domain Magnetization Model for Magnetic Nanoparticles in Magnetic Particle Spectroscopy

Thilo Wawrzik, Takashi Yoshida, Meinhard Schilling, Frank Ludwig

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Signal generation in magnetic particle imaging and magnetic particle spectroscopy is generally described via the Langevin function of superparamagnetism. To include the magnetization dynamics, the Langevin function is augmented with a frequency-dependent term derived from the linear Debye model. Here, we extend that expression to cover the dynamics of higher harmonics, where each harmonic is multiplied with a complex-valued weighting factor, obtaining a frequency-domain model for application in the context of viscosity-/binding-dependent magnetic particle spectroscopy measurements.

Original languageEnglish
Number of pages1
JournalIEEE Transactions on Magnetics
Volume51
Issue number2
DOIs
Publication statusPublished - Feb 1 2015

Fingerprint

Magnetization
Spectroscopy
Superparamagnetism
Nanoparticles
Viscosity
Imaging techniques

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

Cite this

Debye-Based Frequency-Domain Magnetization Model for Magnetic Nanoparticles in Magnetic Particle Spectroscopy. / Wawrzik, Thilo; Yoshida, Takashi; Schilling, Meinhard; Ludwig, Frank.

In: IEEE Transactions on Magnetics, Vol. 51, No. 2, 01.02.2015.

Research output: Contribution to journalArticle

@article{750a0c65d17046b7b00320657e361a8c,
title = "Debye-Based Frequency-Domain Magnetization Model for Magnetic Nanoparticles in Magnetic Particle Spectroscopy",
abstract = "Signal generation in magnetic particle imaging and magnetic particle spectroscopy is generally described via the Langevin function of superparamagnetism. To include the magnetization dynamics, the Langevin function is augmented with a frequency-dependent term derived from the linear Debye model. Here, we extend that expression to cover the dynamics of higher harmonics, where each harmonic is multiplied with a complex-valued weighting factor, obtaining a frequency-domain model for application in the context of viscosity-/binding-dependent magnetic particle spectroscopy measurements.",
author = "Thilo Wawrzik and Takashi Yoshida and Meinhard Schilling and Frank Ludwig",
year = "2015",
month = "2",
day = "1",
doi = "10.1109/TMAG.2014.2332371",
language = "English",
volume = "51",
journal = "IEEE Transactions on Magnetics",
issn = "0018-9464",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
number = "2",

}

TY - JOUR

T1 - Debye-Based Frequency-Domain Magnetization Model for Magnetic Nanoparticles in Magnetic Particle Spectroscopy

AU - Wawrzik, Thilo

AU - Yoshida, Takashi

AU - Schilling, Meinhard

AU - Ludwig, Frank

PY - 2015/2/1

Y1 - 2015/2/1

N2 - Signal generation in magnetic particle imaging and magnetic particle spectroscopy is generally described via the Langevin function of superparamagnetism. To include the magnetization dynamics, the Langevin function is augmented with a frequency-dependent term derived from the linear Debye model. Here, we extend that expression to cover the dynamics of higher harmonics, where each harmonic is multiplied with a complex-valued weighting factor, obtaining a frequency-domain model for application in the context of viscosity-/binding-dependent magnetic particle spectroscopy measurements.

AB - Signal generation in magnetic particle imaging and magnetic particle spectroscopy is generally described via the Langevin function of superparamagnetism. To include the magnetization dynamics, the Langevin function is augmented with a frequency-dependent term derived from the linear Debye model. Here, we extend that expression to cover the dynamics of higher harmonics, where each harmonic is multiplied with a complex-valued weighting factor, obtaining a frequency-domain model for application in the context of viscosity-/binding-dependent magnetic particle spectroscopy measurements.

UR - http://www.scopus.com/inward/record.url?scp=84930640516&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84930640516&partnerID=8YFLogxK

U2 - 10.1109/TMAG.2014.2332371

DO - 10.1109/TMAG.2014.2332371

M3 - Article

AN - SCOPUS:84930640516

VL - 51

JO - IEEE Transactions on Magnetics

JF - IEEE Transactions on Magnetics

SN - 0018-9464

IS - 2

ER -