Abstract: The invention relates to a three-dimensional bionic composite material based on refection elimination and double-layer P/N heterojunctions. The preparation method of the composite material comprises: (1) anisotropically etching a silicon wafer with an alkaline solution, to form compactly arranged tetragonal pyramids on the surface of the silicon wafer; (2) performing hydrophilic treatment on the silicon wafer, growing TiO2 crystal seeds on the surface of the silicon wafer, and calcining the silicon wafer in a muffle furnace; (3) putting the silicon wafer obtained in the step (2) into a reaction kettle, and growing TiO2 nano-rods on the side walls of silicon cones by a hydrothermal synthesis method; and (4) depositing PPY nano-particles on the TiO2 nano-rods. The composite material has good refection elimination performance and efficient photogenerated charge separation capability, and is applicable in fields of photo-catalysis, photoelectric conversion devices, solar cells and the like.

Abstract: The invention relates to a three-dimensional bionic composite material based on refection elimination and double-layer P/N heterojunctions. The preparation method of the composite material comprises: (1) anisotropically etching a silicon wafer with an alkaline solution, to form compactly arranged tetragonal pyramids on the surface of the silicon wafer; (2) performing hydrophilic treatment on the silicon wafer, growing TiO2 crystal seeds on the surface of the silicon wafer, and calcining the silicon wafer in a muffle furnace; (3) putting the silicon wafer obtained in the step (2) into a reaction kettle, and growing TiO2 nano-rods on the side walls of silicon cones by a hydrothermal synthesis method; and (4) depositing PPY nano-particles on the TiO2 nano-rods. The composite material has good refection elimination performance and efficient photogenerated charge separation capability, and is applicable in fields of photo-catalysis, photoelectric conversion devices, solar cells and the like.

Abstract: The invention refers to a process for the production of graphene nanoribbons in the presence of an anisotropic metal surface which induces a spatial orientation of the nanoribbons.

Abstract: A method for selective growth of organic molecules on a substrate is proposed. The method comprises: creating a pattern of nucleation sites for the organic molecules on the substrate; depositing of organic molecules at the nucleation sites by vapor deposition. An organic material based device obtained by performing the method is also proposed. The method offers an alternative to methods that are known the fields of coating technology or semiconductor fabrication.

Abstract: A rotating transfer device for transfer of a film to a substrate at a gas-liquid interface, the rotating transfer device comprising a substrate holder holding the substrate, and a rotational positioning unit for rotating the substrate holder, the rotational positioning unit having a pivot to which the substrate holder is attached, whereby the pivot is angled between 0° and 60° to the plane of the interface surface. As a result, LB patterns with different dimensions and orientations that depend on the transfer velocity can be generated simultaneously.