| 摘要 |
The subject matter of the present invention relates to a method and a device for determining properties of objects with sizes in the micrometre or nanometre range. The objects are themselves magnetisable or are connected to magnetisable particles. According to the invention, the objects are introduced into a homogeneous magnetic field from two or three orthogonally arranged Helmholtz coils (2, 3). Local microscopic disturbances are produced in the homogeneous magnetic field by a magnetisable local disruption structure, such as the magnetisable particles themselves. Properties of the objects can be inferred from the reaction of the objects to these disturbances or to variations of the field strength and/or field direction of one or more of the Helmholtz coils. |
