UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS

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Conference: Bucharest University Faculty of Physics 2021 Meeting


Section: Solid State Physics and Materials Science


Title:
Very accurate non-contact surface scan for the characterization of the materials used in space applications using Kevin Probes


Authors:
Florin-Adrian POPESCU, Gabriel CHIRITOI, Eugeniu Mihnea POPESCU


Affiliation:
Institute of Space Science, 409 Atomistilor Street, Magurele, Ilfov, ROMANIA 077125


E-mail
fapopescu@spacescience.ro


Keywords:
Kevin Probe, non-contact, control, instruments, space,


Abstract:
The various properties of materials can be revealed by the use of non-contact and non-destructive measurement devices such as macroscopic and microscopic KEvin probes. As the basic operation of a Kevin Probe relies on a vibrating capacitor, the measurement accuracy depends on the quality of the vibrating voice-coil that the measurement tip is attached to, and the adaptive control of the vibration amplitude over a wide frequency domain. Also, the use of Kevin probes in the characterisation of the materials involved in space applications require fast scanning of the sample areas and very accurate positioning of the measuring tip in order to acquire precise surface potential readings. This paper presents our latest achievements in the development of very accurate non-contact surface scan devices for the characterisation of the materials used in space applications using Kevin probes.


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Acknowledgement:
Proiect 282PAD/03.08.2020