Direct award of Low temperature scanning tunnelling microscope - 2025-0897314
Ordregiver: Aarhus Universitet
- Offentliggjort
- 24 oktober 2025
- Udførelsessted
- DK042
- Procedure
- Udbud med forhandling
- Delkontrakter
- 1
- Bekendtgørelsesnummer
- 00704075-2025-01
- Reference
- 2d503648-fe70-4024-9105-efbdf470cb66
- Officiel kilde
- Officiel kilde
CPV-koder
- 38000000Laboratorieudstyr, optisk udstyr og præcisionsudstyr (ikke briller)
Beskrivelse
Aarhus University wishes to buy a closed-cycle low temperature scanning tunnelling microscope (LT-STM) for a new experiment that will be established for structural and optical studies of molecular ices. The LT-STM is specially customized to adopt optical components that are cooled to 4K and also adopts a 1K cooler for cooling superconducting SNSPD detector - operating at 0.9K. The aim of the research is to investigate molecular ices formed at interstellar conditions, including measurements of their characteristic fingerprints by detection of infrared emission from vibrationally excited constituent molecules. The structure of polar molecular ices formed on e.g. graphitic surfaces are predominantly governed by the intermolecular interaction with a very weak interaction between the molecule and the substrate. Such weakly bound systems are known to be easily perturbed by the STM tip during the measurements. To avoid this, we demand a 4K STM setup with the capability to perform experiments with extremely small tunneling currents - down to 1pA. Another key requirement of the setup is the ability to provide a low temperature platform for detection of infrared (IR) light emission (down to …
Tildelinger
| Tildelt til | Beløb | Dato |
|---|---|---|
| Scienta Omicron GmbH | 1.000.000 kr | 22 september 2025 |
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