ROTAX – Two-Axis Rotator for Full Spherical Sample Orientation and Precise Positioning in Advanced Scientific Experiments

Full 3D angular control under extreme conditions

ROTAX is a highly advanced two-axis rotator designed to enable full spherical orientation of samples in demanding experimental environments. It provides precise and independent control of two perpendicular rotational axes, allowing researchers to position samples with exceptional accuracy in three-dimensional space. This capability is especially valuable in experiments conducted under extreme conditions, such as strong magnetic fields, ultra-low temperatures, or confined geometries like cryostats. By overcoming the limitations of conventional rotation systems, ROTAX improves measurement precision, enhances reproducibility, and enables more efficient and reliable data acquisition across a wide range of scientific applications.

limited angular ranges
mechanical constraints in cryostatsi
nsufficient precision under extreme conditions
lack of compatibility with high magnetic fields or very low temperatures

These limitations lead to reduced measurement accuracy, lower reproducibility, and inefficient data

Two-Axis Rotator for Rotation Without Limits

The two-axis rotator ROTAX is an innovative component for the precise spatial alignment of material samples during measurements under extreme conditions, such as strong electromagnetic fields, very low temperatures, or within extremely confined spaces. With ROTAX, two perpendicular rotation axes can be controlled independently and simultaneously. This precise control of the sample within the measurement setup reduces measurement time, while automation of the process enables higher data throughput.

Precision & Control

Angular resolution of approximately 0.01°
Continuous rotation (>360°) along both axes
Stable and reproducible sample positioning
Suitable for high-resolution anisotropic measurements

Compatibility & Efficiency

Non-magnetic materials (PEEK) for high-field experiments
Operating range from 10 mK to 370 K
Compact design (<30 mm diameter)
Enables automated measurement procedures

ROTAX is specifically designed for use in cryostats with severely limited installation space and offers full functionality with a diameter of approximately 28 mm.

Robust Mechanical Architecture

Two independent axes of rotation
Indexable sample holder for easy preparation
No active components in the cold region

DOWNLOAD, Please click arrow to get more information about materials for the helium management system.

Applications in Modern Materials Research

Angle-dependent electrical and thermal transport measurements
Quantum oscillations (e.g., de Haas–van Alphen, Shubnikov–de Haas)
Magnetic susceptibility
Nuclear magnetic resonance (NMR)
Ultrasound measurements
Specific heat and dilatometry
X-ray and neutron scattering
Thin-film and material characterization

Frequently Asked Questions (FAQ)

1.What problem does ROTAX address?

ROTAX enables precise, continuous 3D orientation of samples under extreme experimental conditions (cryogenic temperatures and high magnetic fields), which is essential for the investigation of anisotropic material properties.

2.How does the technology work?

The system is based on two orthogonal rotation axes (axis-in-axis design), which are independently driven via mechanical rods, enabling continuous full-sphere sample rotation.

3.What are the main advantages?

Full 3D rotation without geometric limitations
High angular resolution (~0.01°)
Operation under cryogenic conditions and high magnetic fields
Compatibility with automated measurement workflows

4.For which applications and operating conditions is the system suitable?

ROTAX is suitable for transport measurements, NMR, specific heat, ultrasound, quantum oscillations, as well as scattering and materials analysis techniques.
It operates within a temperature range of 10 mK to 370 K and is compatible with high magnetic fields and vacuum/UHV environments.

5.Can the system be integrated into existing setups?

Yes. ROTAX is compatible with most standard cryomagnetic systems, provided that two vacuum-tight mechanical feedthroughs are available.

6.Who is the target user?

ROTAX is designed for research institutions, universities, and industrial R&D groups working in condensed matter physics and materials science.

Contact:

Dr. Hannes Kühne und Stefan Findeisen, Mechanische Entwicklung

Tel.: +49 351 260 3523

rotax(@)hzdri.de

ROTAX – Zwei-Achs-Rotator für vollsphärische Probenorientierung