59results about How to "Achieve thickness" patented technology

The invention relates to a vertical cavity surface emitting laser and method for fabricating the same. The vertical cavity surface emitting laser of the invention comprises: a substrate, a first reflector, an active layer, a second reflector, a first electrode layer and a second electrode layer. The second reflector has a first confinement layer with a first aperture and a second confinement layer with a second aperture. The second aperture is smaller than the first aperture. According to the invention, because the second confinement layer is formed by implanting oxygen ion into the second reflector and heating to let the oxygen ion and Al content in the second reflector react to form an oxide layer, the second confinement layer can be used as an optical and electronic confinement layer. Therefore, the width and depth of the second confinement layer can be achieved precisely and easily.

The present invention relates to a controllable polymeric surface coating including a macromolecule, which is covalently bound to the surface of a substrate, the macromolecule including a plurality of polymerisation initiators and a plurality of surface binding groups; and pendant polymers grafted from at least some of the polymerisation initiators.

A rotor blade for a wind power plant, comprises an upper shell and a lower shell which are joined to each other and have a trailing edge each, and which has a profile extending in the direction of flow and, at its rear end, exhibiting a profile trailing edge of a thickness, wherein the trailing edges of the upper and lower shells are spaced apart in at least one area of the rotor blade such that the thickness of the profile trailing edge is defined by one of the shells.

The invention discloses a multilayer antenna structure and antenna. The multi-layer antenna structure includes an upper dielectric substrate, an intermediate dielectric substrate, a lower dielectric substrate and a reflector arranged in sequence, wherein: the upper surface of the upper dielectric substrate is provided with a parasitic patch; the intermediate dielectric substrate and the upper dielectric substrate are arranged at intervals. The upper surface of the intermediate dielectric substrate is provided with a radiation patch, and the lower surface is integrally attached with a first metal grounding layer; the upper surface of the lower dielectric substrate is arranged in close contact with the lower surface of the intermediate dielectric substrate, and the lower surface of the lower dielectric substrate is provided with The feeding structure has a second metal ground layer attached to the entire upper surface, wherein the feeding structure and the radiation patch are connected through metal probes; and the reflector is located on the lower surface side of the lower dielectric substrate, and there is an air layer between the lower dielectric substrate and the lower dielectric substrate. . The invention solves the technical problem that the performance and thickness requirements of the antenna cannot be balanced.