automated top-loading cryostat with variable temperature & superconducting magnet
closed-cycle & low vibration cryostat platform
no liquid helium required & enables SPM
automated temperature and magnetic field control
fast parameter change via touchscreen
variable temperature (1.65 .. 300 K) @ full field
transport measurements & LT-SPM
At the top of our range of top-loading, closed-cycle cryostat, the attoDRY2100 offers a continuous base temperature of 1.65 K, an automated temperature & magnetic field control from 1.65 K to 300 K and your choice of superconducting magnet. It even allows for full magnetic field even at 300 K with exceptional temperature stability, as well as for field cooling of samples without the need to handle liquid helium. It is hence the best choice as your variable temperature cryostat for any low temperature experiment, be it magnetotransport measurements, confocal microscopy & spectroscopy or scanning probe microscopy.
The integrated touchscreen allows for conveniently setting the desired field (B) and temperature (T) without even using a PC. More elaborate measurement schemes such as programmable sweeps of B and T are easily possible via a USB connection and a LabVIEW interface. The temperature stability was measured to be better than ±5 mK at 1.5 K over 10 hours. The top-loading design enables quick and easy sample exchange, while offering a generous sample space of 49.7 mm in diameter.
The unmatched cooling performance via exchange gas coupling provides an initial cooldown time of the complete system of around 15-20 hours, while the turn-around time during sample exchange is around 5-8 hours.
Last but not least, the closed-cycle cryostat attoDRY2100 was specifically designed to provide an ultra-low vibration measurement platform for cryogenic scanning probe experiments without the need for liquid helium. Due to a proprietary design, mechanical vibrations created by the pulse-tube coldhead are decoupled from the measurement platform. When measured with the attoAFM I, vibration amplitudes of less than 0.15 nm RMS are routinely achieved (bandwidth of 200 Hz, vertical direction)1.
1 Further reading: Quacquarelli, F.P, et al., „Scanning Probe Microscopy in an Ultra-Low Vibration Closed-Cycle Cryostat: Skyrmion Lattice Detection and Tuning Fork Implementation“, Microscopy Today, 23(6), 12-17 (2015)
|technology||ultra-low vibration, pulse-tube based closed-cycle cryostat, designed for scanning probe microscopy applications|
|sample environment||He exchange gas, Constant low pressure (~50 mbar) over complete temperature range|
|sample space||49.7 mm diameter probe bore fitting all attocube inserts|
|sample exchange||top loading system for quick access, Manual gas handling|
|usability||fully automated temperature and magnetic field control via integrated touchscreen, USB interface for remote control|
|vibration & acoustic noise damping system||proprietary low vibration design|
|temperature control||Fully automated, including all pumps and valvesTouchscreen & remote control via PC|
|temperature range||1.65 .. 300 K (automated control)|
|base temperature||1.65 (expected), 1.8 K (guaranteed)|
|magnetic field control||via touchscreen, via remote control|
|Max. magnetic field||100 % (e.g. 9 T)|
|cool down time of sample||approx. 3 .. 5 h (depending on insert)|
|initial cool down time of system without insert (unattended)||15 .. 20 h (system without magnet), 20 .. 24 h (incl. 9 T magnet)|
|temperature stability||< ± 5 mK expected (1.5 .. 10 K), < ± 10 mK guaranteed (1.5 .. 10 K)|
|cooling power at sample location||> 2 mW @ 2 K|
|field cooling possible||yes|
|nominal cooling power||> 900 mW @ 4.2 K|
|power consumption||max. 9.0 kW, 7.2 kW steady state|
|cooling of compressor||water cooling (requires local infrastructure)|
|Size and Dimensions|
|cryostat (width x depth x height)||1120 x 640 x 1050 mm³ (depending on magnet choice)|
|required min. ceiling height||approx. 2.60 m ( depending on magnet)|
|optional electronics rack (width x depth x height)||640 x 640 x 1050 mm³|
|Options and Upgrades|
|superconducting magnet||solenoids: 7, 9, 12 T, vector magnets: e.g.: 8/2 T, 9/3 T, 9/1/1 T, ...|
|bipolar magnet power supply||included (with optional magnet)|
|pumping kit||turbomolecular pump with suitable backing pump for sample space preparation|
|confocal microscopes||attoCFM I, attoCFM II, attoCFM III, attoCFM IV|
|confocal Raman microscopes||attoRAMAN|
|atomic force microscopes||attoAFM I , AFM upgrade options (MFM, KPFM, PFM, conductive-tip AFM), attoAFM III (on request)|
|scanning Hall probe microscopes||attoSHPM|
Fields of Applications
Imaging and scanning probe microscopy of surface properties on the nanoscale at variable temperatures down to milli Kelvin and combination with high magnetic fields.
Systems for microscopy and nanoscale analysis of material properties at ambient and low temperature and in high magnetic fields.
Magnetotransport measurements on mesoscopic structures at variable temperatures and in high magnetic fields.
Optics and Spectroscopy
Confocal microscopy and nanoscale spectroscopy at low temperatures and in high magnetic fields on quantum dots, NV centers, 2D materials, nanowires and other materials.
Signatures of a degenerate many-body state of excitons in van der Waals heterostacks
Isolating Hydrogen Gas inside H-BN Bubbles
Enhanced coupling of NV-centre's spins and photons
In-situ electrical biasing technique in MoS2
Collective electronic excitations of dipolar excitons
The perfect dry VTI: excellent temperature stability and field cooling
Prof. C. Schönenberger
Experimental Condensed Matter Physics, University of Basel
We are amazed to have now seen the compact, beautiful looking attoDRY2100 in action in our lab. It is a very convenient dry cryostat that allows for a one-button cooldown to 1.6K that works. Although the installation was done during Corona times, it all went very smoothly to our full satisfaction."
Prof. A. Holleitner
Experimental Semiconductor Physics group, TU Munich
We are absolutely happy with the cooling performance of the attoDRY2100, both concerning base temperature as well as duration to cool it down from room temperature! Therefore, many thanks for developing such a great system!"
Prof. X. Xu
Nanoscale Quantum Optoeletronics Group, University of Washington
For researchers who are concerned with stability and low-temperature performance in a magneto-optical cryostat, the attoDRY 2100 is an excellent choice."
N. P. Wilson
Nanoscale Quantum Optoeletronics Group, University of Washington
I really want to compliment attocube on the performance and elegance of the cooling architecture in the attoDRY2100, as well as the ergonomics and physical design of the system. It is exceptionally well engineered, and is perhaps the most stable and most convenient magneto-optical cryostat on the market."