研究目的
To demonstrate strong collective exciton-plasmon coupling and double-mode Rabi splitting in a hybrid system of core-shell Au@Ag nanorods and J-aggregates of two different dyes, and to study the magneto-optical activity of the hybridized states.
研究成果
The study successfully demonstrated strong collective coupling in a hybrid system of Au@Ag nanorods and J-aggregates of two dyes, leading to double Rabi splitting and significant magneto-optical activity. This opens up new possibilities for applications in sensing, information storage, and processing, as well as for fundamental studies of multimode hybridization and energy transfer.
研究不足
The study is limited by the spectral overlap requirements for achieving strong coupling, the stability of the hybrid structures, and the need for precise control over the nanorod aspect ratios and dye aggregation states.
1：Experimental Design and Method Selection:
The study involved the integration of core-shell Au@Ag nanorods with J-aggregates of two different dyes (TCI and DBI) to form a hybrid system. The strong coupling regime was achieved by ensuring the spectral overlap of the localized surface plasmon resonance (LSPR) band with the J-bands of the dyes.
2：Sample Selection and Data Sources:
Au@Ag nanorods of different aspect ratios (
3：5 to 0) were synthesized and characterized. J-aggregates of TCI and DBI dyes were formed and their absorption spectra were measured. List of Experimental Equipment and Materials:
A Cary 50 spectrometer was used for optical extinction spectra, a transmission electron microscope (JEOL JEM-2100F UHR) for TEM images, and a Jasco J-815 spectropolarimeter equipped with a GMW 3470 electromagnet for MCD experiments.
4：Experimental Procedures and Operational Workflow:
Hybrid structures were formed by sequential assembly of TCI and DBI J-aggregates on Au@Ag NRs. The optical and magneto-optical properties of the hybrid systems were then characterized.
5：Data Analysis Methods:
The experimental data were analyzed using a tensorial model to calculate the absorption and MCD spectra, and to estimate the Rabi splitting values.
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