SAW driven plasmons in graphene heterostructures for sensing ultrathin layers.

Speaker: Raúl Izquierdo López.
Organization: Instituto de Sistemas Optoelectrónicos y Microtecnología (ISOM), de la E.T.S.I. Telecomunicación, Universidad Politécnica de Madrid.

Data: April 1st, 2022.
Hours: 10.00 hours.
Place: Room B-222 of the ETSI of Telecommunications of the UPM [Cómo llegar]

ABSTRACT

The study of the optical properties of materials in the mid IR is of great importance for identifying complex organic compounds, determining both their composition and structure, since the vibrational resonances of the main functional groups lie in this region of the spectrum. The large confinement of graphene plasmon polaritons in the mid IR can be exploited to strengthen light-matter interactions for surface enhanced IR absorption (SEIRA) spectroscopy. In this work, surface acoustic waves are studied as a way to couple far field light into surface plasmon-phonon polaritons in graphene heterostructures, with simulations on the optical properties of the heterostructures and their sensing capabilities and characterization of devices for the generation of surface acoustic waves.