Our research interests are focused on key technology components in the development of milli-Kelvin cryo coolers. At the present time this is heat switches and the miniaturization of the cooling technology.

Many cryogenic systems require heat flow to be controlled. Heat switches provide this control, allowing thermal isolation and connection between different system components. An ‘ideal’ heat switch would provide complete thermal isolation in its ‘open’ state and a strong thermal link in its ‘closed’ state. Complete isolation can only be achieved using mechanical heat switches, which are undesirable for use in space due to the potential for failure.

We are investigating the construction and peformance of solid state heat switches utilizing the magnetoresitive properties of tungsten.

More information on magnetoresistivity can be found here

Tungsten crystals
Tungsten single crystals
Tungsten heat switch
A Tungsten magnetoresistive heat switch

Page last modified on 09 sep 11 15:13