adiabatic demagnetization
The cooling device of Jülich’s microscope is based on the process of adiabatic demagnetization.
It was used in the 1930s to reach temperatures below 1 kelvin in the laboratory for the first time. For the operation of microscopes, it has several advantages
- can cool the microscope just by changing the strength of the electric current passing through an electromagnetic coil.
- Thus, the microscope has no moving parts and is practically vibration-free
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The Jülich scientists are the first ever to have constructed a scanning tunnelling microscope using this technique. “The new cooling technology has several practical advantages. Not only does it improve the imaging quality, but the operation of the whole instrument and the entire setup are simpli...
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