Dielectrophoretic Behavior of Janus Particles and Biomolecule-Conjugated Janus Particles
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Dielectrophoresis (DEP) can be defined as the transport phenomenon of polarizable particles under a non- uniform electric field. DEP offers a relatively convenient, versatile, and efficient manipulation of particles in terms of sensitivity, selectivity, and label-free characteristics. In our study, DEP behaviors of Janus Particles (JPs) with and without biomolecule conjugation were investigated under various AC voltages and frequencies. The polystyrene-based JPs consisting of two physicochemically different sides were prepared by the formation of particle monolayer and anisotropic metal deposition. DEP behavior of the JPs was monitored and compared depending on the biomolecule conjugation. Such experimental results of the current study could be applied for detection and separation of biomolecules.