Size-Dependent Relaxation Properties of Monodisperse Magnetite Nanoparticles Measured Over Seven Decades of Frequency by AC Susceptometry

被引：55

作者：

Ferguson, R. Matthew ^{[1
]}

Khandhar, Amit P. ^{[1
]}

Jonasson, Christian ^{[2
]}

Blomgren, Jakob ^{[2
]}

Johansson, Christer ^{[2
]}

Krishnan, Kannan M. ^{[1
]}

机构：

[1] Univ Washington, Dept Mat Sci, Seattle, WA 98195 USA

[2] Acreo AB, SE-40016 Gothenburg, Sweden

来源：

IEEE TRANSACTIONS ON MAGNETICS | 2013年 / 49卷 / 07期

关键词：

AC susceptometry; magnetic particle imaging; magnetic particles; magnetization reversal; FERROFLUIDS;

D O I：

10.1109/TMAG.2013.2239621

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Magnetic relaxation is exploited in innovative biomedical applications of magnetic particles such as magnetic particle imaging (MPI), magnetic fluid hyperthermia, and bio-sensing. Relaxation behavior should be optimized to achieve high performance imaging, efficient heating, and good SNR in bio-sensing. Using two AC susceptometers with overlapping frequency ranges, we have measured the relaxation behavior of a series of monodisperse magnetic particles and demonstrated that this approach is an effective way to probe particle relaxation characteristics from a few Hz to 10 MHz, the frequencies relevant for MPI, hyperthermia, and sensing.

引用

页码：3441 / 3444

页数：4

共 14 条

[1]

Ahrentorp F, 2010, AIP CONF PROC, V1311, P213, DOI 10.1063/1.3530015

[2] Biomolecular reactions studied using changes in Brownian rotation dynamics of magnetic particles [J].

Astalan, AP ;

Ahrentorp, F ;

Johansson, C ;

Larsson, K ;

Krozer, A .

BIOSENSORS & BIOELECTRONICS, 2004, 19 (08) :945-951

[3] Brownian magnetic relaxation of water-based cobalt nanoparticle ferrofluids [J].

Bao, Y. ;

Pakhomov, A. B. ;

Krishnan, Kannan M. .

JOURNAL OF APPLIED PHYSICS, 2006, 99 (08)

[4] MEASUREMENTS OF PARTICLE-SIZE DISTRIBUTION PARAMETERS IN FERROFLUIDS [J].

CHANTRELL, RW ;

POPPLEWELL, J ;

CHARLES, SW .

IEEE TRANSACTIONS ON MAGNETICS, 1978, 14 (05) :975-977

[5] Detection of rolling circle amplified DNA molecules using probe-tagged magnetic nanobeads in a portable AC susceptometer [J].

de la Torre, Teresa Zardan Gomez ;

Mezger, Anja ;

Herthnek, David ;

Johansson, Christer ;

Svedlindh, Peter ;

Nilsson, Mats ;

Stromme, Maria .

BIOSENSORS & BIOELECTRONICS, 2011, 29 (01) :195-199

[6]

Fannin P. C., 1999, J PHYS D, V28, P2003

[7] NEW TECHNIQUE FOR MEASURING THE COMPLEX SUSCEPTIBILITY OF FERROFLUIDS [J].

FANNIN, PC ;

SCAIFE, BKP ;

CHARLES, SW .

JOURNAL OF PHYSICS E-SCIENTIFIC INSTRUMENTS, 1986, 19 (03) :238-239

[8]

Ferguson R.M., 2012, J APPL PHYS, V111

[9] Optimizing magnetite nanoparticles for mass sensitivity in magnetic particle imaging [J].

Ferguson, R. Matthew ;

Minard, Kevin R. ;

Khandhar, Amit P. ;

Krishnan, Kannan M. .

MEDICAL PHYSICS, 2011, 38 (03) :1619-1626

[10] Ferrohydrodynamic relaxometry for magnetic particle imaging [J].

Goodwill, P. W. ;

Tamrazian, A. ;

Croft, L. R. ;

Lu, C. D. ;

Johnson, E. M. ;

Pidaparthi, R. ;

Ferguson, R. M. ;

Khandhar, A. P. ;

Krishnan, K. M. ;

Conolly, S. M. .

APPLIED PHYSICS LETTERS, 2011, 98 (26)

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