The new INFINITY UHV SPM is a pulse tube cooler based low-temperature SPM for high-resolution STM, QPlus®-AFM, and spectroscopy experiments in a temperature range between < 10 K and 420 K. The cooler with very long service intervals belongs to the next generation of cryostats that are independent of cryogenic liquids. The instrument can stay cold for several months and thus, serves as an ideal platform for long term and un-interrupted high resolution measurements.
The new INFINITY UHV SPM is a low-temperature SPM for high-resolution STM, QPlus®-AFM, and spectroscopy experiments. A pulse tube cooler is employed to cool the UHV SPM in a new, unique design. This renewable cryostat, which has no moving parts in the cold head and very long service intervals, belongs to the next generation of cryostats that are independent of cryogenic liquids. The handling of liquid helium or liquid nitrogen is no longer necessary, thus making instrument use simpler and safer. The instrument can stay cold for several months without the need for any maintenance of the cryostat.
For optimum mechanical decoupling, the sensitive SPM is mounted in a dedicated UHV chamber with ports for sample transfer, optical access, and evaporators, and the noisy pulse tube cooler is located in a separate high vacuum chamber. In addition, the SPM head is mechanically decoupled by a spring suspension with eddy current damping. This unique two-chamber design with incorporated mechanical decoupling units, sophisticated thermal connections, and dedicated acoustic noise cancellation is the key to pm-stability in a temperature range from 10 K to 420 K.
Benefits and Properties:
- Independent from liquid helium and liquid nitrogen, only power and water are required to cool the instrument.
- High operating safety: no need for handling of cryogenic liquids.
- User-friendly: no filling/refilling of cryostats and no blockages - just press a button to cool the instrument to 10 K.
- Quiet working environment.
- Long (“infinite”) measurement time.
“QPlus® is a registered trademark of Professor Franz J. Giessibl, Regensburg, Germany”
More Information
INFINITY STM Results
STM: Au(111)@ 9.6 K
Au Surface State
dI/dV spectrum showing the Au surface state
dI/dV map
dI/dV map of Au(111) at -280 mV
INFINITY QPlus® Results
QPlus®: NaCI(001) single crystal @ 9.7 K (A=330 pmpp)
QPlus®: NaCI(001) single crystal @ 9.7 K (A=100 pmpp)
QPlus®: NaCI(001) single crystal @ 9.7 K (A=13 pmpp)
Results
On-Surface Synthesis Guided by Supramolecular Orientation on a Au(111) Surface
Surface-assisted Ullmann coupling is a very common approach to carry on-surface synthesis. We investigated the deposition of the 1,3,5-tris(4-bromophenyl)benzene molecule on an Au(111) surface at low temperatures. We observed a new...
100% Selective Cyclotrimerization of Acetylene to Benzene on Ag(111)
Benzene, a high-volume chemical, is produced from larger molecules by inefficient and environmentally harmful processes. Recent changes in hydrocarbon feedstocks from oil to gas motivate research into small molecule upgrading. For...
On-Surface Molecular Recognition Driven by Chalcogen Bonding
Chalcogen bonding interactions have been widely employed to create ordered non-covalent assemblies in both solids and liquids. Yet, their ability to engineer molecular self-assembly on surfaces has not been demonstrated. Here, we...
Copper Clusters on h-BN-Covered Pt(110): Nucleation, Stability, and Local Surface Potential
Copper-based nanocatalysts are essential for efficient electroreduction of CO2 toward hydrocarbon fuels. Nucleation, growth, and stability of copper nanoclusters on hexagonal boron nitride (h-BN) films on a Pt(110) substrate were...
Downloads
INFINITY SPM Lab: Closed Cycle UHV SPM
The new INFINITY UHV SPM is a low-temperature SPM for high-resolution STM, QPlus® AFM, and spectroscopy experiments. A pulse tube cooler is employed to cool the UHV SPM in a new, unique design. The new cryostat has no moving parts in the cold head and very long service intervals. It belongs to the next generation of cryostats that are independent of cryogenic liquids. The handling of liquid helium or liquid nitrogen is no longer necessary, thus making the use of the instrument simpler and safer. The INFINITY SPM can stay cold for several months without the need for any maintenance of the cryostat.
