QuadraProbe Four-Probe, Low Temperature UHV AFM/STM System for Electrical Measurements and Electron Transport Studies

QuadraProbe is an advanced, four-probe, low temperature UHV AFM/STM system from RHK Technology. The QuadraProbe is constructed and designed to be a suitable platform for electron transport studies and electrical measurements on devices, for example, carbon nanotubes and nano-wires.

The LT QuadraProbe is a total multi-method, multi-chamber UHV system that uses a cryogenic bath cryostat to consistently cool the four probes and the sample to 10 K (standard) or alternatively to 4-6 K for the most significant Scanning Tunneling Spectroscopy (STS) and transport measurements. The bath cryostat can accomplish up to a 48 hour hold time or more at constant temperatures for a long, continuous analysis.

The four probes can be individually positioned, and each one is equipped for atomic resolution. Four STM tips are offered as standard; optionally, any number of these probes can be positioned anywhere between one and four and can be transformed in vacuum to AFM-qPlus sensor for use on conductive or insulating samples.

Additionally RHK has formulated various unique specialty applications for the QuadraProbe to widen the flexibility and range of progressive multi-probe experiments that researchers can use. These incorporate using a magnetic field to the sample, coupling microwave signals to the tips and cathode luminescence.

Specifications

The specifications of QuadraProbe are as follows:

Preparation-analysis chamber standard

Distinctive specialty applications available for CL

Built-in control system with single operator interface

Four smart probes of either STM or AFM that are interchangeable in vacuum

Each probe is separately positionable and are efficient for atomic resolution

Chilled sample and probes are as low as 4-6 K (LHe), 4

On-board SEM with almost 5 nm resolution