Semianalytical Treatment of Collective Vibrational Strong Coupling in Infrared Phononic and Plasmonic Nanoantennas.

ABSTRACT: The interaction between nanoantenna electromagnetic modes and molecular vibrations enables key nanophotonic applications such as ultrasensitive vibrational spectroscopy and molecular sensing. Here, we develop a systematic analysis to obtain the collective coupling strength, g, between bright collective vibrational modes of an assembly of molecules and infrared modes of phononic and plasmonic nanoantennas. Our approach exploits the information in the electromagnetic fields as obtained from a single classical simulation, incorporated in semianalytical equations that enable to calculate g for any arbitrary molecular distribution, thus dramatically reducing the computational effort. These semianalytical equations are validated by comparing the results of the coupling strength wit

SUBMITTER: Sepulveda J 

PROVIDER: S-EPMC12512038 | biostudies-literature | 2025 Jul

REPOSITORIES: biostudies-literature