Evanescent light scattering with magnetic colloids | Zendy

V. Blickle | Zendy; Dušan Babić | Zendy; Clemens Bechinger | Zendy

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Evanescent light scattering with magnetic colloids

Author(s) -

V. Blickle,

Dušan Babić,

Clemens Bechinger

Publication year - 2005

Publication title -

applied physics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.182

H-Index - 442

eISSN - 1077-3118

pISSN - 0003-6951

DOI - 10.1063/1.2035888

Subject(s) - paramagnetism , superparamagnetism , magnetic field , light scattering , biomagnetism , condensed matter physics , colloid , scattering , total internal reflection , magnetic force microscope , magnetism , magnetic nanoparticles , materials science , optics , physics , nanotechnology , magnetization , chemistry , nanoparticle , quantum mechanics

We measure magnetic interactions between paramagnetic colloidal beads and an external magnetic field by using total internal reflection microscopy (TIRM). Our results demonstrate that TIRM can be applied to absorptive paramagnetic probe particles and thus extends the range of interaction types which can be addressed with this method. With our setup, we can detect magnetic forces on single superparamagnetic particle ranging from about 10 to 600 fN.

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