Implementation of Conductance Tomography in Detection of the Hall Sensors Inhomogeneity

• Authors: O. Petruk , P. Nowak , R. Szewczyk
• Languages of publication: EN

Abstracts

EN

Tomography is a useful tool for objects reconstruction in non-destructive testing. Many kinds of tomography, depending on the penetrating wave character, are available and adapted for specific application. This paper presents new kind of tomography - conductance tomography extended with a Hall effect. Its development was motivated by the need on inhomogeneity detection in thin film Hall effect sensor, particularly graphene Hall effect sensors. Paper presents complete description of the tomographic method and tomography software developed in the GNU Octave. Inverse transformation is based on optimization method. Each shape reconstruction was done with the finite element method using the open source software: Elmer FEM and Salome. Results confirmed the suitability of the work.

Keywords

EN

07.55.Ge; 85.75.Ss; 85.30.Fg; 02.70.Dh

Discipline

• 07.55.Ge: Magnetometers for magnetic field measurements
• 02.70.Dh: Finite-element and Galerkin methods
• 85.30.Fg: Bulk semiconductor and conductivity oscillation devices (including Hall effect devices, space-charge-limited devices, and Gunn effect devices)
• 85.75.Ss: Magnetic field sensors using spin polarized transport

• Journal: Acta Physica Polonica A
• Year: 2017
• Volume: 131
• Issue: 4
• Pages: 1186-1188

Dates

published

2017-04

Contributors

author

O. Petruk

• Industrial Research Institute for Automation and Measurements, Al. Jerozolimskie 202, 02-486 Warsaw, Poland

author

P. Nowak

• Institute of Metrology and Biomedical Engineering, Warsaw University of Technology, sw. A. Boboli 8, 02-525 Warsaw, Poland

author

R. Szewczyk

• Institute of Metrology and Biomedical Engineering, Warsaw University of Technology, sw. A. Boboli 8, 02-525 Warsaw, Poland

References

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Identifiers

DOI

10.12693/APhysPolA.131.1186