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A stable, Label-free Silica Fiber Taper Interferometer Biosensor Based on Mesoporous Fe3O4@SiO2 Nanospheres

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Abstract

A high-sensitivity biosensor based on mesoporous Fe3O4@SiO2 nanospheres coated fiber taper interferometer is presented. And the special selectivity of SiO2 film improves concentration sensitivity reaching to 1.0524 nm/log M with good linearity.

© 2014 Optical Society of America

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