top-loading cryostat with superconducting magnet
cryogen-free & low vibration cryostat platform
no liquid helium required & enables SPM
toploading insert with 49.7 mm sample space
larger sample space than most competitors
low Temp. (4 K) & high magnetic fields (up to 12 T)
quantum optics & magneto-optics applications
The attoDRY1000 is a closed-cycle cryostat setting new performance benchmarks. The attoDRY1000 was specifically designed to provide an ultra-low vibration measurement platform for cryogenic confocal microscopy without the need for liquid helium. The standard closed-cycle system enables vibration-sensitive experiments in a temperature range from 4 K to 300 K. The optionally available microscope inserts are cooled by a controlled exchange gas atmosphere. Superconducting magnets up to 9 T are available as an option. 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.
Despite the mechanical decoupling between coldhead and sample platform, the cooling performance of the attoDRY1000 is simply outstanding. Temperatures as low as 3 K and probe cooldown times as fast as 1 hour make cryogenic scanning probe experiments a delight. For the attoDRY1000, a wide variety of scanning probe microscopy inserts is available, ranging from confocal (CFM) to magnetic force microscopy (MFM), as well as transport measurement inserts (atto3DR).
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)
|temperature stability||< ± 10 mK expected (4 .. 50 K), < ± 25 mK guaranteed (4 .. 50 K)|
|cooling power at sample location||> 5 mW @ 5 K|
|temperature control||Manual, requires optional temperature controller|
|temperature range||4 .. 300 K (optional temp. controller required)|
|base temperature||4 K (guaranteed), 3.2 (expected)|
|magnetic field control||manual control via magnet power supply, via remote control|
|Max. magnetic field||100 % (e.g. 9 T) @ 4 K sample temperature, 67% (e.g. 6 T out of 9 T) @300 K sample temperature, 100 % guaranteed for temperature between 4 and 10 K|
|cool down time of sample||approx. 2 h (depending on insert)|
|cool down time of system (system incl. 9 T magnet)||approx. 10 .. 15 h (unattended)|
|cool down time of system (system without magnet)||approx. 5 .. 10 h (unattended)|
|field cooling possible||no|
|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|
|technology||ultra-low vibration, pulse-tube based closed-cycle cryostat, designed for scanning probe microscopy applications|
|sample environment||He exchange gas, 4-5 different pressure ranges depending on desired sample temperature, requires manual control|
|sample space||49.7 mm diameter probe bore fitting all attocube inserts|
|sample exchange||top loading system for quick access, Manual gas handling|
|vibration & acoustic noise damping system||proprietary low vibration design|
|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)|
|temperature controller||2 channel (magnet + sample temperature)|
|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
Magnetotransport measurements on mesoscopic structures at variable temperatures and in high magnetic fields.
Systems for microscopy and nanoscale analysis of material properties at ambient and low temperature 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.
Imaging and scanning probe microscopy of surface properties on the nanoscale at variable temperatures down to milli Kelvin and combination with high magnetic fields.
MFM imaging of a Skyrmion lattice
Scanning probe microscopy in an ultra-low vibration closed-cycle cryostat
Cryogen-free confocal measurements on a single quantum dot
Scalable Architecture for Multi-Photon Boson Sampling
Coupling single defects to a nanowire
Measurements of field-driven transformation of a domain pattern
A new way to modulate exciton-complex emissions of TMDs
Prof. A. Högele
Nanophotonics group, Ludwig-Maximilians-University Munich
The attoDRY1000 has quickly become an integral part of the research equipment in our group. The closed-cycle system is easy to operate while providing for excellent stability, short cool down times and low vibration level for optical spectroscopy of solid-state quantum systems. The compatibility with previous versions of CFM-line microscopes and the plug-and-play operation without cryogenic liquids make attoDRY1000 a really attractive alternative to conventional cryogenic spectroscopy in bath cryostat systems.
Prof. M. Atatüre
University of Cambridge, Department of Physics, UK
The delivery of the attoDRY1000 was well within the anticipated time frame, the installation was carried out successfully and since then, the system has given full satisfaction. All quoted specifications were fulfilled or exceeded and the service, maintenance and support have proven to be excellent. The unit has been operational since the first day and continues to function with no interruptions. I can verify that, in contrast to typical liquid systems, the attoDRY1000 continues to operate without the typical interruption of cryogenics refill, allowing data acquisition around the clock for months.
Dr. B. Alén Milán
Molecular Beam Epitaxy group, Instituto de Microelectrónica de Madrid
In contrast to many other such complex pieces of equipment, we were able to perform our first regular measurements already after 2 weeks, and since then, have been very pleased with the performance of the attoDRY1000.
Prof. M. Daldin
UFSCar, Universidade Federal de São Carlos, São Carlos, Brazil
Thanks to the versatility of the attoDRY1000 used with the attoCFMI, the system has been serving our research group in different kinds of optical and electronic transport measurements. It's incredible stability on a cryo-free enviroment is the key for succesfully running measurements over long periods of time. We are also very glad with the first class technical support provided by attocube.