The use of liquid probes based on an eutectic solution for studying the conducting properties of thin films
N.V. Permiakov
Saint Petersburg Electrotechnical University «LETI»
DOI: 10.26456/pcascnn/2021.13.338
Short communication
Abstract: The work is devoted to development of a modular four-probe setup using a liquid contact based on an indium-gallium eutectic solution ( EGaIn), which can be used to create clamping liquid contacts that do not introduce mechanical deformation into the measured structures. It is proposed to use this setup for measuring the current-voltage characteristics of thin-film samples. A modular measurement scheme is assumed. Each probe is driven by four motors to position and expel a drop from the syringe to form the desired contact area size. Optical control is used to prepare the probes and measure the diameter of the formed contact areas. The parameters for the manufacture of liquid probes are selected, namely, the speed of extrusion and movement of the probe along the vertical axis to form a conical droplet. The installation is controlled in the LabView environment.
Keywords: indium-gallium eutectic, electric probe, adjustable contact area size, thin films, current- voltage characteristic
- Nikita V. Permiakov – Ph. D., Docent, Micro- and Nanoelectronics Department, Saint Petersburg Electrotechnical University «LETI»
Reference:
Permiakov, N.V. The use of liquid probes based on an eutectic solution for studying the conducting properties of thin films / N.V. Permiakov // Physical and chemical aspects of the study of clusters, nanostructures and nanomaterials. — 2021. — I. 13. — P. 338-344. DOI: 10.26456/pcascnn/2021.13.338. (In Russian).
Full article (in Russian): download PDF file
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