TiO₂ metasurfaces: From visible planar photonics to photochemistry.

ABSTRACT: TiO₂ metasurfaces have been intensively studied in the past few years. To date, the TiO₂ metadevices only used their high reflective index (n). The controllable light extinction coefficient (k) of TiO₂ has not been exploited yet. Here, we converted TiO₂ metasurfaces to black TiO₂ metasurfaces and explored their new opportunities in photochemistry. A complementary metal oxide semiconductor (CMOS)-compatible technique has been developed to reversibly and precisely control the absorption of TiO₂ metasurfaces without spoiling their internal nanostructures. Consequently, two types of black TiO₂ metasurfaces were realized for photochemical experiments. The metasurface with an ultrawide absorption band can

SUBMITTER: Wu Y 

PROVIDER: S-EPMC6824849 | biostudies-literature | 2019 Nov

REPOSITORIES: biostudies-literature