Diffusing-wave spectroscopy study of the motion of magnetic particles in chemically cross-linked gels under external magnetic fields

Tetsuharu Narita, Alexandra Knaebel, Jean Pierre Munch, Sauveur Jean Candau, M. Zrínyi

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

The motion of magnetic particles in chemically cross-linked gels under external magnetic fields was studied using diffusing-wave spectroscopy (DWS). The samples were chemically cross-linked poly(vinyl alcohol) (PVA) gels in which polystyrene microgel particles containing magnetite were dispersed. Results showed that the application of a periodic magnetic field to a ferrogel induces a sharp decay in the autocorrelation function with a characteristic time which is a decreasing function of the frequency of the magnetic field.

Original languageEnglish
Pages (from-to)2985-2989
Number of pages5
JournalMacromolecules
Volume36
Issue number8
DOIs
Publication statusPublished - Apr 22 2003

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Particles (particulate matter)
Gels
Spectroscopy
Magnetic fields
Ferrosoferric Oxide
Polystyrenes
Magnetite
Autocorrelation
Alcohols

ASJC Scopus subject areas

  • Materials Chemistry

Cite this

Diffusing-wave spectroscopy study of the motion of magnetic particles in chemically cross-linked gels under external magnetic fields. / Narita, Tetsuharu; Knaebel, Alexandra; Munch, Jean Pierre; Candau, Sauveur Jean; Zrínyi, M.

In: Macromolecules, Vol. 36, No. 8, 22.04.2003, p. 2985-2989.

Research output: Contribution to journalArticle

Narita, Tetsuharu ; Knaebel, Alexandra ; Munch, Jean Pierre ; Candau, Sauveur Jean ; Zrínyi, M. / Diffusing-wave spectroscopy study of the motion of magnetic particles in chemically cross-linked gels under external magnetic fields. In: Macromolecules. 2003 ; Vol. 36, No. 8. pp. 2985-2989.
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