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Fabrication and characterization of unidirectional transducers for surface acoustic wave generation

Grant number: 19/13654-5
Support type:Scholarships in Brazil - Scientific Initiation
Effective date (Start): December 01, 2019
Effective date (End): November 30, 2020
Field of knowledge:Physical Sciences and Mathematics - Physics - General Physics
Principal Investigator:Odilon Divino Damasceno Couto Júnior
Grantee:Luca de Oliveira Trinchão
Home Institution: Instituto de Física Gleb Wataghin (IFGW). Universidade Estadual de Campinas (UNICAMP). Campinas , SP, Brazil
Associated research grant:12/11382-9 - Optical modulation of semiconductor nanostructures using surface acoustic waves, AP.JP

Abstract

In this project we aim to optimize, fabricate, and characterize interdigital transducers (IDTs) for surface acoustic wave (SAW) generation. Our final goal is to fabricate functional unidirectional devices (FEUDTs). In the first part of the project, the student will review the theoretical background of conventional IDT fabrication in order to optimize the physical characteristics of his devices. The fabrication of lithographic masks and optical lithography followed by lift-off will be performed in the sequence. We will also fabricate FEUDTs using designs proposed in the literature and compare their performance with the optimized IDTs. S-parameter measurements will be systematically performed in order to compare the functioning and efficiency of the two types for device. (AU)