Janus evaporator and solar seawater desalination and collection device

The invention provides a Janus evaporator and a solar seawater desalination and collection device. The Janus evaporator comprises a metal plate, a light absorption layer is arranged on one side of the metal plate, a texture layer is arranged on the other side of the metal plate, and the texture layer is of a groove-shaped or net-shaped microstructure obtained through laser processing on the metal plate; the solar seawater desalination and collection device comprises a semi-closed condensation and collection device, the top and one side of the semi-closed condensation and collection device are open, the two sides of the Janus evaporator and the two sides of the condensation plate are connected with the two side walls of the semi-closed condensation and collection device, and the condensation plate is arranged close to the non-open side of the semi-closed condensation and collection device and inclines towards the open side. The Janus evaporator is arranged on the open side of the semi-closed condensation colle