What are the current advances in the field of sensing using nanostructured disordered metasurfaces?
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Recent advances in the field of sensing using nanostructured disordered metasurfaces have shown promising results. These metasurfaces, consisting of densely packed plasmonic nanoclusters on a planar optical cavity, have been demonstrated to function as broadband absorbers or offer reconfigurable absorption bands across the visible region, enabling continuous wavelength-tunable photothermal conversion . Additionally, metasurfaces have been examined for surface-enhanced Raman scattering (SERS) and surface-enhanced infrared absorption (SEIRA) sensing, thanks to the presence of a wide density of hotspots and confined optical modes within their structures . Furthermore, metasurface-based micro/nano-optical sensors (MNOSs) have been developed, which utilize the physics and design flexibilities of metasurfaces to achieve high sensitivity and advanced functionalities, leading to highly integrated smart sensing platforms . These advancements in metasurface-based sensing technologies offer great potential for various applications, including biochemical sensing, photocatalysis, and energy harvesting .
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