Figure 1 | Schematic illustration of the concept of rapid and localized singlet-oxygen generation enabled by quasi-BIC metasurfaces. (IMAGE)
Caption
Figure 1 | Schematic illustration of the concept of rapid and localized singlet-oxygen generation enabled by quasi-BIC metasurfaces. Left: In the absence of photoexcitation, the region near the metasurface is dominated by triplet oxygen (blue spheres), and the tumor cells remain viable. Right：Under photoexcitation at a designated wavelength, the Au–TiO₂ metasurface enhances optical absorption and initiates interfacial reactions that convert triplet oxygen into singlet oxygen (red spheres), producing a high-concentration, spatially confined reactive-oxygen environment in the vicinity of the device surface and thereby inducing tumor-cell damage/death (black cells).
Credit
Xing Fu et al.
Usage Restrictions
Credit must be given to the creator.
License
CC BY