Magnetic-field Induced Diffraction Patterns from Ferrofluids

Corneliu Rablau; Prem Vaishnava; Gavin Lawes; Ratna Naik

Magnetic-field Induced Diffraction Patterns from Ferrofluids

Corneliu Rablau, Prem Vaishnava, Gavin Lawes, Ratna Naik

Kettering University

Research output: Contribution to conference › Presentation

Abstract

Ferrofluids are stable colloidal suspensions of superparamagnetic nanoparticles in a carrier liquid. We report studies of magneto-optic properties of two ferrofluid systems consisting of tetramethyl-ammonium-hydroxide (TMAH)-coated and of dextran-coated Fe3O4 nanoparticles of nominal sizes of 6 nm and 12 nm respectively suspended in water. Both samples showed superparamagnetic behavior. The static and time-dependent DC-magnetic-field-induced light scattering patterns produced by two orthogonal He-Ne laser beams passing through the ferrofluid samples revealed significant different optical signatures for the two surfactants. Notably, in contrast to the linear diffraction pattern produced by TMAH-coated nanoparticles, a circular diffraction pattern is reported -- for the first time -- in the dextran-coated ferrofluid.

Original language	American English
State	Published - Apr 15 2011
Event	APS Spring Meeting - Duration: Apr 15 2011 → …

Conference

Conference	APS Spring Meeting
Period	4/15/11 → …

Disciplines

Physics

Access to Document

http://meetings.aps.org/Meeting/OSS11/Event/150101

Cite this

@conference{e02c0e2d3c6046d19ea7ffe920252aa0,

title = "Magnetic-field Induced Diffraction Patterns from Ferrofluids",

abstract = " Ferrofluids are stable colloidal suspensions of superparamagnetic nanoparticles in a carrier liquid. We report studies of magneto-optic properties of two ferrofluid systems consisting of tetramethyl-ammonium-hydroxide (TMAH)-coated and of dextran-coated Fe3O4 nanoparticles of nominal sizes of 6 nm and 12 nm respectively suspended in water. Both samples showed superparamagnetic behavior. The static and time-dependent DC-magnetic-field-induced light scattering patterns produced by two orthogonal He-Ne laser beams passing through the ferrofluid samples revealed significant different optical signatures for the two surfactants. Notably, in contrast to the linear diffraction pattern produced by TMAH-coated nanoparticles, a circular diffraction pattern is reported -- for the first time -- in the dextran-coated ferrofluid.",

author = "Corneliu Rablau and Prem Vaishnava and Gavin Lawes and Ratna Naik",

note = "Issue 56(3); APS Spring Meeting ; Conference date: 15-04-2011",

year = "2011",

month = apr,

day = "15",

language = "American English",

}

TY - CONF

T1 - Magnetic-field Induced Diffraction Patterns from Ferrofluids

AU - Rablau, Corneliu

AU - Vaishnava, Prem

AU - Lawes, Gavin

AU - Naik, Ratna

N1 - Issue 56(3)

PY - 2011/4/15

Y1 - 2011/4/15

N2 - Ferrofluids are stable colloidal suspensions of superparamagnetic nanoparticles in a carrier liquid. We report studies of magneto-optic properties of two ferrofluid systems consisting of tetramethyl-ammonium-hydroxide (TMAH)-coated and of dextran-coated Fe3O4 nanoparticles of nominal sizes of 6 nm and 12 nm respectively suspended in water. Both samples showed superparamagnetic behavior. The static and time-dependent DC-magnetic-field-induced light scattering patterns produced by two orthogonal He-Ne laser beams passing through the ferrofluid samples revealed significant different optical signatures for the two surfactants. Notably, in contrast to the linear diffraction pattern produced by TMAH-coated nanoparticles, a circular diffraction pattern is reported -- for the first time -- in the dextran-coated ferrofluid.

AB - Ferrofluids are stable colloidal suspensions of superparamagnetic nanoparticles in a carrier liquid. We report studies of magneto-optic properties of two ferrofluid systems consisting of tetramethyl-ammonium-hydroxide (TMAH)-coated and of dextran-coated Fe3O4 nanoparticles of nominal sizes of 6 nm and 12 nm respectively suspended in water. Both samples showed superparamagnetic behavior. The static and time-dependent DC-magnetic-field-induced light scattering patterns produced by two orthogonal He-Ne laser beams passing through the ferrofluid samples revealed significant different optical signatures for the two surfactants. Notably, in contrast to the linear diffraction pattern produced by TMAH-coated nanoparticles, a circular diffraction pattern is reported -- for the first time -- in the dextran-coated ferrofluid.

UR - https://digitalcommons.kettering.edu/physics_conference/19

UR - http://meetings.aps.org/Meeting/OSS11/Event/150101

M3 - Presentation

T2 - APS Spring Meeting

Y2 - 15 April 2011

ER -

Magnetic-field Induced Diffraction Patterns from Ferrofluids

Abstract

Conference

Disciplines

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