| KEYWORD |
Modellizzazione dell'effetto piezoelettrico per l'integrazione di un sensore
Parole chiave MEMS, MICROSISTEMI, AFFIDABILITÀ MECCANICA, FEM, MODELING AND SIMULATION
Riferimenti SERGIO FERRERO, LUCIANO SCALTRITO
Riferimenti esterni Bertana Valentina
Gruppi di ricerca AA - Materials and Processes for Micro and Nano Technologies
Tipo tesi EXPERIMENTAL/MODELLING
Descrizione Piezoelectric materials are widely used in electronics as both sensors and actuators [1, 2]. When operating in their linear regime, these materials can accurately measure force by monitoring the voltage generated across their terminals [3]. However, crystals with a polar axis exhibit both pyroelectric and piezoelectric properties, meaning they generate polarization in response to both mechanical and thermal loads [4]. The thesis goal is to delve into the fundamentals of pyroelectricity and piezoelectricity, analyse the behaviour of these materials under operating conditions, and develop a predictive model for sensor performance under both mechanical and thermal stresses.
The work will be organised as follow:
• Literature review.
• Definition of the tests to be performed for sensor characterisation.
• Sensor predictive model development.
• Results analysis.
[1] Regtien, Dertien, Sensors for Mechatronics, 2018
[2] Fukuda, Menz, Micro mechanical systems principles and technology, 1998
[3] IEEE Standard on Piezoelectricity, ANSI/IEEE Std 176-1987
[4] Psarras, G. C., Fundamentals of Dielectric Theories, in: Dielectric Polymer Materials for High-Density Energy Storage.
Scadenza validita proposta 30/09/2025
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