Overview

The PHYSIKE Nan Cryogenic Thermostat is a precision-engineered laboratory temperature control system designed for stable, low-temperature operation in demanding scientific environments. Operating on the principle of closed-cycle refrigeration combined with high-resolution PID feedback control, this cryogenic thermostat delivers consistent thermal stability across a wide operational range—typically spanning from –150 °C to +100 °C (dependent on configuration and heat load). Unlike liquid nitrogen–based dewars or open-bath systems, the Nan series employs an integrated compressor-driven cryocooler with helium gas circulation, enabling continuous, maintenance-light operation without consumables. Its compact footprint and modular design support integration into optical tables, vacuum chambers, and material characterization setups—including X-ray diffractometers, superconducting quantum interference devices (SQUIDs), and low-temperature scanning probe microscopes. The system is engineered for precision thermal regulation rather than rapid cooling, prioritizing long-term stability (< ±0.01 °C over 24 h) and minimal thermal drift—critical for experiments requiring reproducible phase transitions, resistivity mapping, or magnetotransport measurements.

Key Features

• Hermetically sealed, oil-free closed-cycle refrigeration architecture minimizing contamination risk in ultra-high vacuum (UHV) and cleanroom applications
• High-stability temperature control via dual-sensor feedback (platinum RTD and thermocouple redundancy) with programmable ramp rates (0.01–5 °C/min)
• Modular cold finger design compatible with standard CF-35, CF-63, and KF-40 flanges for seamless vacuum system integration
• Low-vibration mechanical design (< 5 µm peak-to-peak at 1 Hz) validated for interferometric and atomic-scale measurement workflows
• Front-panel touchscreen interface with real-time temperature logging, alarm thresholds, and configurable hold/soak profiles
• Optional Ethernet/RS-485 communication port supporting SCPI command set for LabVIEW, Python, and MATLAB automation

Sample Compatibility & Compliance

The Nan Cryogenic Thermostat accommodates a broad spectrum of sample geometries and mounting configurations—including puck-style holders, wire-bonded chips, thin-film substrates, and custom sample stages up to Ø75 mm × 25 mm height. It supports both atmospheric and vacuum environments (down to 10^–7 mbar) when coupled with appropriate feedthroughs and shielding. From a regulatory standpoint, the unit complies with IEC 61000-6-3 (EMC emission standards) and IEC 61010-1 (safety requirements for electrical equipment for measurement, control, and laboratory use). Its firmware architecture includes audit-trail-capable event logging, aligning with GLP and GMP documentation expectations for regulated R&D laboratories. While not FDA-cleared (as it is non-diagnostic and non-invasive), its traceable calibration protocol adheres to ISO/IEC 17025 guidelines when used with NIST-traceable reference sensors.

Software & Data Management

PHYSIKE provides the NanControl Suite—a cross-platform desktop application (Windows/macOS/Linux) enabling full remote supervision, multi-segment temperature programming, and real-time data streaming at up to 10 Hz. All temperature readings are time-stamped with UTC synchronization and exported in CSV or HDF5 format for post-processing. The software implements role-based user access (operator, technician, administrator), password-protected parameter locking, and automatic generation of calibration certificates per session. For compliance-sensitive environments, optional 21 CFR Part 11–compatible modules are available—featuring electronic signatures, immutable audit trails, and change-control logs for all setpoint modifications and firmware updates.

Applications

• Low-temperature characterization of 2D materials (e.g., graphene, transition metal dichalcogenides) under transport and optical excitation
• Thermal cycling validation of aerospace-grade composites and solder joint reliability testing
• Cryogenic photoluminescence (PL) and Raman spectroscopy of quantum dots and perovskite nanocrystals
• Calibration of infrared detectors and bolometers requiring stable blackbody references below 100 K
• Superconductivity onset studies in high-T_c cuprates and iron-based pnictides
• Long-duration aging tests of solid-state batteries under sub-zero operating conditions

FAQ

What is the lowest base temperature achievable with the Nan Cryogenic Thermostat under vacuum?
Under high-vacuum conditions (< 10^–6 mbar) and nominal heat load (< 1 W), the system achieves a base temperature of ≤ 10 K. Actual performance depends on thermal anchoring quality and radiation shielding configuration.
Can the Nan Thermostat be operated inside a magnetic field?
Yes—standard models are non-magnetic (Ti/Al/Cu construction) and rated for static fields up to 1 T. Optional mu-metal shielding is available for operation near MRI or superconducting magnets.
Is external chiller water required?
No—the Nan series is air-cooled and self-contained; no external coolant loops or chilled water supply are needed.
How often does the system require preventive maintenance?
With proper ambient conditions (20–25 °C, < 60% RH), the recommended maintenance interval is 12 months—limited to compressor oil inspection, vibration damper evaluation, and sensor verification using a traceable reference thermometer.