Patent ID: 8110396

Claim:
A thermocycling device comprising: a thermocycler module for heating and/or cooling, said thermocycler module comprising: a heating block, a heat sink arranged underneath the heating block, and a thermal switch comprising: a magnetic thermoconducting liquid arranged between the heat sink and the heating block, the magnetic thermoconducting liquid comprising an upper surface and a lower surface in thermal connection with the heat sink, a space defining a gap between the upper surface of the magnetic thermoconducting liquid and the heating block thermally isolating the heat sink from the heating block in an off-state of the thermal switch, and a magnetic stimulating unit configured to move the magnetic thermoconducting liquid through the gap toward the heating block in an on-state of the thermal switch and upon contact of the upper surface of the magnetic thermoconducting liquid with the heating block making a thermal connection between the heating block and the heat sink.