Pablo Alonso-González
University of Oviedo – Asturias, Spain
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Strong coupling between light and molecular vibrations (Vibrational Strong Coupling, VSC) is of great fundamental and technological interest, as it promises the ability to manipulate molecular properties such as chemical reactivity, selectivity, and photostability. Recent experiments have studied VSC at the nanoscale using phonon polaritons in h-BN, promising the development of the field of nanochemistry. However, there is one crucial property still missing in nanoscale VSC experiments: directionality. This elusive ability would allow, for example, to perform VSC with specific molecule vibrations, which would open a direct possibility to nanochemistry. In this talk, we will present experimental evidence of directional VSC at the nanoscale. Specifically, we will show real-space images of hyperbolic polaritons in MoO3 coupled to pentacene molecules, revealing that VSC is modulated as a function of the propagation direction
Email: pabloalonso@uniovi.es