Tunable hydrophoresis for bio-particle focusing and separation using dielectrophoresis-assisted and magnetophoresis-assisted hybrid techniques

Hydrophoresis is a sheathless and passive method that utilises a pressure gradient induced by the microstructure and steric effect between the particles and grooves. In the past decade, the hydrophoresis has been intensively developed for biomedical applications. However, this technique has limitation in a wide operational range due to the lack of flexibility. That is, once a channel is fabricated, the size of particles to be focused is pre-determined by the height of the channel.