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Equipements

Our reserach group has a strong experience in quantum/mesoscopic transport in hybrid systems (organic/inorganic) with strongly reduced dimensions.

Micro- and nano-fabrication

Thanks to the cleanroom of the University (figure 1), we can fabricate our quantum devices with standard techniques like optical lithography, e-beam lithography, thin film evaporation of different materials with different physical properties (insulator, metals, semiconductors and superconductors) and etching (physical and chemical).We have also an Atomic Force Microscope to characterize the surface of our thin films.

pano
Figure 1 : Photography of the photolithography room.

Carbon nanotubes growth

The group has a dedicated oven (figure 2) for growing clean carbon nanotubes at high temperatures (900°C) on substrates. Different gas lines are present and valves to tune precisely their concentration during the growth process.

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Figure 2 : Oven dedicated for the growth of carbon nanotubes.

Measurements

Probe station
For quick electrical characterizations at room temperature of our devices, the group has a probe station (figure 3) with AC and DC voltage sources. Conductance of the molecular junctions can be directly measured.


Figure 3 : Home-made probe station with the equipment in the back for the electrical characterizations (AC and DC voltage source, voltmeter...).

Nextron :

We dispose of a compact micro probe station (MPS) by Nextron company (www.microprobestation.com/nextronci.html).
The MPS is equipped with 8 probes and it is suitable for in-situ transport measurements under vacuum or in controlled atmosphere in the temperature range 300 to 750K. The chamber is equipped by an optical access.

VTI Cryovac :

We dispose of a Variable Temperature Insert (VTI) by Cryovac (www.cryovac.de). It owns an insert with 24 independent twisted lines for DC measurements. The VTI is designed to be inserted into a standard 100-L liquid He dewar. An impedance valve and a local heater allows regulation of the pumped liquid He allowing to reach a base temperature of 1.3K. The sample can be in He atmosphere or in vacuum.

This equipment is in constant evolution in order to perform our latest research.

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