Abstract
This chapter focuses on the use of magnetic particles-based hybrid materials in combination with (1) metallic nanoparticles, (2) polymers, (3) carbon nanotubes, and (4) graphene in the design of biosensors with applications in medical, food, and environmental fields. The magnetic hybrid composites frequently exhibit superior features compared to each component alone, enabling multiple functionalities that open new perspectives for the next-generation biosensors. The most important aspects concerning the synthesis and application of these hybrid composites are presented, highlighting their synergistic effect on the analytical performance of the biosensors. Four mostly used biological or biomimetic elements in the biosensor designs are presented: enzymes, antibodies, nucleic acids, and molecularly imprinted polymers. Multifunctional magnetic hybrid materials applied in electrochemical, optical, and piezoelectrical sensing systems are summarized, underlying the benefits incurred by the advanced nanomaterials used.
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