Super black iron nanostructures with broadband ultralow reflectance for efficient photothermal conversion

Structural absorption is widely accepted as an effective way to produce super black materials, which show matte black appearance and extremely broadband low reflectance. We have developed an ultrafast pulsed laser deposition (PLD) technology to deposit thin super black film by tuning the surface microstructure. Various coatings made by Fe, Al and Ti all showed broadband absorption, confirming that the PLD method is suitable for fabricating …