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ST-500 Series

Low vibration level and the positional drift
Temperature range from ~3.5 K to 475 K (optional: 8 K to 650 K) (depending on probes)
Works either with liquid nitrogen or liquid helium
Helium consumption less than 1 L/h
Accommodates up to 2 in (51 mm) diameter wafers (optional: up to 8 in [203 mm])
Up to seven cooled, easily interchangeable, micro-manipulated probe arms
Electrical measurements from DC to 67 GHz
Wide variety of inexpensive LF probe tips that are easy to replace
Very low triaxial probe arms leakage current of just a few fA
Non-contact, non-destructive Kelvin probes
Multi-tip probes
Fiber probe arms with single and multi-mode fiber options
Optional optical access through the sample mount for transmission measurements
Additional electrical feedthroughs with cables and wires to sample area
Optional special miniature vacuum chamber to transfer sample under vacuum from glove box to probe station
Very smooth x-y-z travel stages for all monoscope system assemblies
Optional movable sample holder
System customization options
Looking for a cryogen-free option for your existing "wet" probe station? Optional recirculating gas cooler eliminates the use of liquid helium for "wet" systems.

Variable temperature cryostat

The Janis ST-500 series probe stations are high-performance research instruments designed to provide affordable vacuum and cryogenic probing of wafers and devices. The proven ST-500 cryostat is the platform for these probe stations and includes low vibration technology (originally designed for high spatial resolution optical microscopy) to provide outstanding sample positional stability. Researchers around the world are using these systems to conduct research in a wide variety of fields, including MEMS, nanoscale electronics, superconductivity, ferroelectrics, material sciences, and optics.

ST-500-EM

Room temperature, water-cooled electromagnet with a variable horizontal magnetic field of up to 0.6 T (6000 G) with typical field homogeneity of 2% over a 25 mm diameter (1% over 10 mm diameter)
Up to four interchangeable probe arms
Open-cycle probe station option based on low vibration, microscopy ST-500 cryostat
Closed-cycle (cryogen-free) probe station option
Gaussmeter and Hall probe to measure magnetic field
Optional, unipolar, high stability, air-cooled power magnet power supply
Optional bipolar, high stability, water-cooled power magnet power supply
Optional manually controlled, precision rotary stage with a minimum step size of 1°
Note: Would increase the base temperature by a few degrees
Optional attocube nano-positioner rotary stage with a minimum step of 1 millidegree
Note: Would increase the base temperature by a few degrees
Optional software to perform electrical measurements using cryogen-free horizontal field electromagnet probe system
Optional special miniature vacuum chamber to transfer sample under vacuum from glove box to probe station

UHV probe stations

Janis offers a complete range of probe stations suitable for making electrical measurements in a UHV environment. Several standard designs are available, and systems can be custom configured to meet a wide variety of user requirements.

ST-SCON

Superconducting magnets in the ST-SCON model offer a variable vertical magnetic field up to 3 T with typical field homogeneity of 5% over a 10 mm diameter.

ST-500-PM

The ST-500-PM models incorporating permanent magnets are available for magnetic field dependent measurements. These systems are ideal for the study of magneto-optical and magneto-electrical properties in a variety of experiments, including quantum dots, spintronic devices, and nanoscale electronics. These are available in horizontal or vertical configurations.

Horizontal magnetic field parallel to the sample mount plane — two inexpensive cylindrical permanent magnets to create a variable horizontal magnetic field up to 1000 G.

Vertical magnetic field perpendicular to the sample mount plane — an inexpensive set of six permanent ring magnets create a vertical magnetic field that can be step varied between 2000 G and 300 G.

Optional Items for probe stations:

Additional interchangeable probe arms
Additional vacuum chamber ports for a possible future upgrade with more probe arms
Special miniature vacuum chamber to transfer sample under vacuum from the glove box to probe station
Moveable sample holder
attocube nano-positioner linear movement or rotary stages incorporated into probe station
Additional electrical feedthroughs with cables and wires to sample area
Special optical windows including side and bottom window configurations and different window materials
Additional metering flow control valve with variable flow (3.6 to 72 Torrl/s) to introduce different gases into the vacuum chamber
System customization options
Automatic temperature controllers
Turbo pumping station including a with a back-up mechanical pump or oil-free diaphragm pump
Pump-line vibration isolator between the pump and the probe station
Pneumatic vibration isolation table with or without a portable ultra-quiet air compressor
Mechanical pumping station for operation below 4.5 K by pumping helium vent port
Liquid nitrogen storage Dewar with inlet adapter to accept the probe station transfer line
Low vapor pressure thermal anchoring greases
Looking for a cryogen-free option for your existing "wet" probe station? Optional recirculating gas cooler eliminates the use of liquid helium for "wet" systems.