We report on the measurement of the Browinan relaxation frequency of a magnetic nanobeads suspension in microfluidic system using a novel magneto-optical method. We demonstrate that by lock-in analysis of the signal produced on a photodetector by the light transmitted through the particle suspension excited by an uniaxial AC magnetic field, it is possible to precisely record the frequency response of commercial magnetic nanobeads in a microfluidic channel.
Proceedings of the 17th International Conference on Miniaturized Systems for Chemistry and Life Sciences, 2013, p. 272-274
Magnetic nanobeads; Optical biosensing
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17th International Conference on Miniaturized Systems for Chemistry and Life Sciences, 2013