Biomolecular recognition 1 Biosensing 1 Effective refractive index 1 Immobilisation 1 Lab-on-chips 1 Magnetic labeling 1 Molecules 1 Nanomagnetics 1 Optical bio-sensing 1 Optical bio-sensors 1 Optical resonators 1 Particle size analysis 1 Refractive index 1 Silicon 1 Silicon microring resonators 1 Target molecule 1 integrated optics 1 lab on chip 1 magnetic labelling 1 microring resonator 1 optical biosensing