Abstract: An optical waveguide, comprising a waveguide substrate (10). A coupling-in area (20) and a coupling-out area (30) are provided on the waveguide substrate (10), the coupling-in area (20) is provided with a coupling-in grating (21), and the coupling-out area (30) comprises a first coupling-out area (31) and a second coupling-out area (32); a first coupling-out grating (41) is provided in the first coupling-out area (31), and a second coupling-out grating (42) is provided in the second coupling-out area (32); the coupling-in grating (21) and the second coupling-out grating (42) are one-dimensional gratings, and the first coupling-out grating (41) is a two-dimensional grating.

Abstract: A naked-eye three-dimensional (3D) display device (600) is provided. The naked-eye 3D display device (600) comprises: a display component (610), comprising an array of display units (110); and a viewing angle regulator (620), comprising an array of microprism blocks (120, 620-1, 620-2, 620-3, 620-4, 620-5, 620-6). The microprism blocks (120, 620-1, 620-2, 620-3, 620-4, 620-5, 620-6) are divided into a plurality of groups, and an angle combination of a first angle (?1) and a second angle (?2) of each of the microprism blocks (120, 620-1, 620-2, 620-3, 620-4, 620-5, 620-6) is preset so that outgoing lights of the same group of microprism blocks converge into the same viewpoint, and outgoing lights of different groups of microprism blocks converge into different viewpoints. Hence, a plurality of different viewpoints are formed by setting angles of inclined surfaces of the microprism blocks (120, 620-1, 620-2, 620-3, 620-4, 620-5, 620-6), thereby seeing different 3D display effects from different viewing angles.

Abstract: In various embodiments functionalized graphene oxide(s) are provided that demonstrate improved antimicrobial activity, where the graphene oxide(s) are functionalized to increase carbon radical (·C) density.

Abstract: The invention relates to image display technology, in particular to a device for rendering an augmented reality image and a system for realizing augmented reality display comprising the device.

Abstract: The present invention discloses a device for evaluating and demagnetizing residual magnetism quantity of a power transformer. A main circuit comprises a switching power supply the two ends of which are respectively connected with a filter capacitor and a resistor in parallel. A forward end of the switching power supply is connected with a main switch in series. A rear end of the main switch is connected with a series branch of a sixth switch and a first resistor, a series branch of a first switch and a second switch, and a series branch of a third switch and a fourth switch are connected in parallel. A driving circuit is respectively connected with driving ends of the main switch, the sixth, first, second, third and fourth switches. A control circuit is connected with the driving circuit for sending an instruction to the driving circuit.

Abstract: In various embodiments functionalized graphene oxide(s) are provided that demonstrate improved antimicrobial activity, where the graphene oxide(s) are functionalized to increase carbon radical (.C) density.

Abstract: In various embodiments functionalized graphene oxide(s) are provided that demonstrate improved antimicrobial activity, where the graphene oxide(s) are functionalized to increase carbon radical (.C) density.

Abstract: In various embodiments functionalized graphene oxide(s) are provided that demonstrate improved antimicrobial activity, where the graphene oxide(s) are functionalized to increase carbon radical (.C) density.

Abstract: The present invention discloses a device for evaluating and demagnetizing residual magnetism quantity of a power transformer. A main circuit comprises a switching power supply the two ends of which are respectively connected with a filter capacitor and a resistor in parallel. A forward end of the switching power supply is connected with a main switch in series. A rear end of the main switch is connected with a series branch of a sixth switch and a first resistor, a series branch of a first switch and a second switch, and a series branch of a third switch and a fourth switch are connected in parallel. A driving circuit is respectively connected with driving ends of the main switch, the sixth, first, second, third and fourth switches. A control circuit is connected with the driving circuit for sending an instruction to the driving circuit.