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FORSCHUNGSZENTRUM JUELICH NEWS RELEASE — Scanning tunnelling microscopes capture images of materials with atomic precision and can be used to manipulate individual molecules or atoms. Researchers have been using the instruments for many years to explore the world of nanoscopic phenomena. A new approach is now creating new possibilities for using the devices to study quantum effects.
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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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Versatility
it enables matter to be visualized and manipulated at the level of individual atoms and molecules in many different ways.
“Our new microscope differs from all the others in a similar way to how an electric car differs from a vehicle with a combustion engine."
Until now, researchers ha...
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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...
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“Adiabatic cooling is a real quantum leap for scanning tunnelling microscopy. The advantages are so significant that we are now developing a commercial prototype as our next step,” Stefan Tautz explains. Quantum technologies are currently the focus of much research. The interest of many research ...
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Physicists consider the temperature range near absolute zero to be a particularly exciting area for research. Thermal fluctuations are reduced to a minimum. The laws of quantum physics come into play and reveal special properties of materials. Electric current then flows freely without any resist...
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New Approach
Scanning tunnelling microscopes capture images of materials with atomic precision and can be used to manipulate individual molecules or atoms.
Thanks to magnetic cooling, their scanning tunnelling microscope works without any moving parts and is almost vibration-free at extremely low tempe...
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