The Nanophonics group went to Strasbourg from the 7th to the 11th April for the 2024 edition of the SPIE Photonics Europe. We had the opportunities to present our work through different oral presentations and poster session.
Konstantinos Papatryfonos presented his work on “High-order topological states using alignment of different bandgaps in 1D superlattices” which is achieved by concatenating two superlattices with different bandgap orders centered around the same frequency. In this case, inverted mode symmetries are not required to achieve the interface state, which is enabled by modifying the unit cells of the two superlattices. They showcase designs for versatile topological devices where interface states can be simultaneously created across a wide frequency range. You can read more about it here.
Beatriz Castillo Lopez de Larrinzar presented her work on “Interaction effects in chiral acoustoplasmonic nanostructures” where she study the elementary dipolar contributions to the absorption and scattering cross sections in chiral, twisted, vertically stacked plasmonic plates that have been proposed as acoustoplasmonic transducers.
Edson Rafael Cardozo de Oliveira gave a talk on the “Effects of top layer inhomogeneities on the performance of Fabry-Perot cavities and open resonators based on distributed Bragg reflectors”. This study analyzes the effects of inhomogeneities in optical and acoustic resonators utilizing distributed Bragg reflectors. You can read more about it here.
Sandeep Sathyan shared his researsh on “Phonon dynamics in novel materials and hybrid structures”. Nanometer-thick multilayer structures, characterized by contrasts in elastic properties, present promising avenues for engineering and manipulating acoustic phonons at the nanoscale. This study explores the possibilities of hybrid nanostructures that could be both tunable and responsive to ultrafast changes in elastic properties induced by external stimuli such as temperature, humidity, and electrical fields. You can read more about it here.
During the poster session, our PhD student Chushuang Xiang, and our postdocs Elham Mehdi, Edson R. Cardozo de Oliveira, Konstantinos Papatryfonos and Sandeep Sathyan presented their works :
- Enhanced efficiency of coherent acoustic phonon generation and detection using elliptical micropillars – more here.
- Coherent acoustic phonon transport in optophononic waveguides – more here.
- Optimal filtering of polarisation-controlled Brillouin scattering in elliptical optophononic resonators – more here.
- Mesoporous-based responsive acoustic resonators operating in the GHz range – more here.
- Design of responsive mesoporous-based open-cavity acoustic resonators operating in the GHz range – more here.
