Generation and characterization of standing wave patterns in surface acoustic wave delay lines

• Grant number: 22/03323-4
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Start date: April 01, 2022
• End date: December 31, 2022
• Field of knowledge: Physical Sciences and Mathematics - Physics - Condensed Matter Physics
• Principal Investigator: Odilon Divino Damasceno Couto Júnior
• Grantee: Pedro Winckler Matrone
• Host Institution: Instituto de Física Gleb Wataghin (IFGW). Universidade Estadual de Campinas (UNICAMP). Campinas , SP, Brazil
• Associated research grant: 21/06803-4 - Acoustically-modulated exciton dynamics in twisted van der Waals heterostructures, AP.JP2

Abstract

The main objective of this project is to generate and detect standing wave patterns using surface acoustic waves (SAWs). In order to achieve this goal, the student will develop a software interface using Laview to control and synchronize two radio frequency generators. The generators will be connected to the two different interdigital transducers (IDTs) of a SAW delay line to generate the standing wave patterns. The generation of the patterns will be verified using an oscilloscope and radio frequency measurements. The experiments will be performed on LiNbO3 substrates with transition metal chalcogenide monolayer samples. The idea is to investigate the effect of the standing wave pattern in the room temperature photoluminescence of these nanostructures. (AU)