| 摘要 |
<p>A device for the manipulation of a biological material by a magnetic field is presented. The device comprises a magnetic field source coupled to a current source. The current source is of a kind supplying an electric current of at least two electrical degree shifted phases. The magnetic field source comprises a two-part inductor, each inductor part producing a coordinate varying magnetic field (CVMF). Each inductor part is formed by at least two conductors aligned in a spaced-apart relationship, wherein each of the at least two conductors is connectable to a different phase of the current source, and has two spaced-apart parts arranged such that when the conductor is connected to the current source, the electric current flows in its two parts in opposite directions, respectively. The conductors of each inductor part are arranged such that each two locally adjacent conductor parts are associated with two different phases of the electric current source. A distance between the two conductor parts coupled to the same phase of the current source defines a half-wavelength lambd/2 of a wave of magnetic induction of the CVMF. This distance is selected in accordance with a predetermined relation between the wavelength lambd and an effective space DELTA within the magnetic field region defined by the dimensions of the biological material and its distance from the magnetic field source.</p> |
