AI Article Synopsis
- A plasmonic-photonic structure using colloidal lithography was created for an effective radiative cooling system, featuring a core of SiO on an Au reflector with an ITO shell.
- This design exhibits strong selective absorption in the 8-13 µm atmospheric transparency window, essential for efficient cooling.
- The absorption effectiveness is explained by mode splitting of the localized surface plasmon in the ITO shell, driven by a coupling between the ITO's plasmon and the SiO's magnetic dipole resonance.
Article Abstract
A plasmonic-photonic structure based on colloidal lithography was designed for a scalable radiative cooling system and its absorption properties were theoretically investigated. The structure comprises a SiO core, which is on top of an Au reflector and partially covered by an indium tin oxide (ITO) shell. This simple and scalable structure possesses a strong selective absorption in the primary atmospheric transparency window (8-13 µm). The strong selective absorption is attributed to a mode splitting of the localized surface plasmon (LSP) of the ITO shell. To understand the mechanisms of the mode splitting, a quantitative analysis was conducted using a coupled-oscillator model and a coupled-dipole method. The analysis revealed that the mode splitting is induced by a strong coupling between the LSP of the ITO shell and a magnetic dipole Mie resonance of the SiO core.
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| http://dx.doi.org/10.1364/OE.452912 | DOI Listing |
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