Patent ID: 8592753

Claim:
Ion mobility spectrometer which comprises: a classification region defined by a volume containing a fluid, such that in the boundary of the surface of this classification region there is at least one injector in a first place from where the injection or introduction of charged particles takes place, and at least a receptor in a second place as destination of the charged particles, means for generating an electric field in the classification region which is able to drag along the charged particles from the first injection or introduction place towards the second place, wherein there are driving means that are able to provide a relative oscillating displacement of the trajectory of the particles acting: onto the fluid with respect to the injector in the first place and the receptor in the second place, or, onto the injector in the first place with respect to the fluid and the receptor in the second place, or onto the receptor in the second place with respect the injector in the first place and the fluid, or simultaneously onto the injector in the first place and the receptor in the second place with respect to the fluid; and wherein this displacement is in a direction essentially transversal to the direction of the electric field.