Statistical and Correlative Characterization of Individual Nanoparticle in Gap Plasmon Resonator Sensors - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Advanced Materials Technologies Année : 2024

Statistical and Correlative Characterization of Individual Nanoparticle in Gap Plasmon Resonator Sensors

Résumé

Plasmonic nanocavities have the ability to confine light in extremely small volumes. They are receiving increased attention from the nanophotonics and nanoelectronics communities due to their potential applications in optoelectronics, quantum optics, and novel nanophotonic and plasmonic-circuit devices. The coupling of colloidal plasmonic nanocrystals to metal films provides an inexpensive approach to fabricate a virtually unlimited number of individual resonators that can be tuned by adjusting nanoparticle size, gap thickness and refractive index. In this study, we focus on silver nanocubes separated from a gold mirror by thin amorphous dielectric layers (Al2O3, TiO2). We measure the optical response and perform correlative SEM microscopy on a large number (>800) of individual resonators to unveil the statistical distribution of gap plasmon modes and assess systematically the impact that various parameters, such as dielectric thickness, refractive index and nanocube size, have on the resonator sensitivity. The sensitivity of the fundamental mode can be as large as 8 nm/nm for nanocube size variation, 50 nm/nm for Al2O3 thickness variation and 130 nm/RIU for index change of the spacer layer. With the help of numerical simulations this approach enables to infer a quantitative statistical distribution of molecular coatings present on the nanocubes surface, such as polyvinylpyrrolidone, which can affect performance of nanoelectronic devices and assess the strategy to remove it. Finally, by performing measurements on annealed TiO2 layers (2-4nm), we observe an unexpected splitting of the fundamental resonance into two modes. Polarization-resolved measurements enable us to associate this phenomenon to a birefringent behavior of the system.
Fichier sous embargo
Fichier sous embargo
0 6 2
Année Mois Jours
Avant la publication
mercredi 1 janvier 2025
Fichier sous embargo
mercredi 1 janvier 2025
Connectez-vous pour demander l'accès au fichier

Dates et versions

hal-04588114 , version 1 (25-05-2024)

Identifiants

Citer

Peeranuch Poungsripong, Vyshnav Kannampalli, Lionel Santinacci, David Grosso, Dominique Chatain, et al.. Statistical and Correlative Characterization of Individual Nanoparticle in Gap Plasmon Resonator Sensors. Advanced Materials Technologies, 2024, pp.202400083. ⟨10.1002/admt.202400083⟩. ⟨hal-04588114⟩
78 Consultations
3 Téléchargements

Altmetric

Partager

Gmail Mastodon Facebook X LinkedIn More