研究目的
To propose a modified structure with asymmetric resonance elements in each unit cell for complete trapping/absorption of light, enhancing local field for strong light–matter interactions.
研究成果
The designed arrayed plasmonic structure with matched asymmetric metal segments in unit cells achieves complete trapping and absorption of light, demonstrating advantages in applications for light–matter interactions.
研究不足
The critical matching condition requires high precision in fabrication of the structures. Even if not perfectly matched, high-level trapping and absorption of light can still be achieved.
1：Experimental Design and Method Selection:
Finite-difference time-domain simulations were used to elucidate the phenomenon of complete light trapping with asymmetric plasmonic resonator arrays.
2：Sample Selection and Data Sources:
A supercell was considered by applying periodic boundary conditions in the x- and y-directions and perfect matching layer boundary conditions in the z-direction.
3：List of Experimental Equipment and Materials:
Silver (Ag) was chosen for both the top and bottom metal layers, and the medium of interspacing dielectric layer was assumed to have a refractive index of
4：Experimental Procedures and Operational Workflow:
The incidence light was normally incident on the structure plane and polarized in the x-direction.
5：Data Analysis Methods:
Reflection spectra and field distributions were analyzed to understand the resonance characteristics.
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