“…In particular, hair with black colour (black hair) have many photothermal melanin particles dispersed uniformly in the cortex, and the cuticle covers the surface of the hair with sh or tile structures to trap heat, which is made up of a lipid layer and 7-10 layers of at hair cuticle cells to possess low density, low thermal conductivity and hydrophilicity. 51,52 Therefore, black hair can absorb solar energy and convert it to heat without the need for further processing, and the uid will rise through the interstice between the black hair by the Marangoni convection and capillary effects, which are common phenomenona in nature because of the existence of a tension gradient in the interfaces. [53][54][55][56] Inspired by the structure of black hair, we report a strategy to construct an efficient three-dimensional arched solar evaporation model with hydrophilic photothermal bers, in which the Marangoni convection and capillary effects are generated by local contact between the photothermal material and water, triggering continual water ow and maintaining the devices with continuous water supply (Scheme 1).…”