BIOSENSOR SYSTEM AND METHOD FOR DETERMINING THE PROPERTIES OF A MAGNETIC PARTICLE

摘要

Biosensor system and method for determining properties of a particle bounded to a surface reacting to a magnetic field. The method for determining properties of a particle bound to a surface reacting to a magnetic field, comprising the steps of: (a) determining an angular reference referring to a particular orientation of the bonded particle, (b) sequentially applying at least two different magnetic fields to the bonded particle or applying one rotating field to the bonded particle; (c) measuring an angular velocity, and an angular value relating to the orientation of the bonded particle; and (d) determining a magnetic characteristic or a binding characteristic of the bonded particle from said angular velocity, angular value and angular reference.