Abstract: Provided are a vertical cavity surface emitting laser and a manufacturing method thereof, the vertical cavity surface emitting laser comprises a laser precursor, and the laser precursor comprises a first reflector layer, an oxidation layer, a light-emitting layer and a second reflector layer which are stacked, wherein the second reflector layer comprises a plurality of first reflection layers and a plurality of second reflection layers, and a groove is formed on the side of the second reflection layer from the oxidation groove and in a direction away from the oxidation groove; a protection layer is arranged on the laser precursor, and the protection layer at least covers the inner wall of the oxidation groove, and the groove is filled with a part of the protection layer. The technical solution may avoid the collapse of the edge of the first reflection layer.

Abstract: Examples of electronic devices are described herein. In some examples, an electronic device includes a camera. In some examples, the electronic device also includes a processor to start a lock timer to lock the electronic device in response to detecting that a first person leaves a field of view of the camera. The processor is also to adjust the lock timer in response to detecting a second person within the field of view of the camera.

Abstract: Atomically thin layers including pores, their method of manufacture, and their use are disclosed. In some embodiments, pores may be formed in an atomically thin layer by growing the atomically thin layer on exposed portions of a substrate that includes islands comprising a material that is different than the material of the substrate. In some embodiments, pores and/or defects may be formed in an atomically thin layer by employing growth conditions that promote the formation of defects and/or pores. In certain embodiments, pores and/or defects may be etched to enlarge their size.

Abstract: Atomically thin layers including pores, their method of manufacture, and their use are disclosed. In some embodiments, pores may be formed in an atomically thin layer by growing the atomically thin layer on exposed portions of a substrate that includes islands comprising a material that is different than the material of the substrate. In some embodiments, pores and/or defects may be formed in an atomically thin layer by employing growth conditions that promote the formation of defects and/or pores. In certain embodiments, pores and/or defects may be etched to enlarge their size.

Abstract: The present invention provides a composite membrane suitable for liquid-liquid filtration/reverse osmosis. The invention also provides a copolymer useful in the composite membrane, the copolymer comprising an anchoring repeating unit and a foulant-repelling repeating unit, as well as methods for preparing the composite membrane and copolymers. In a preferred embodiment, a copolymer (P [SBMA-co-HEMA]) is synthesized via the free radical copolymerization of a zwitterionic monomer of sulfobetaine methacrylate (SBMA) and an anchoring monomer of hydroxyl ethyl methacrylate (HEMA).

Abstract: Disclosed is a thin film composite hollow fiber that includes an outer support layer having a thickness of 10 to 1000 ?m and a polyamide thin film layer having a thickness of 1 to 10000 nm; and has a transmembrane pressure resistance rate of higher than 15 bar and a pure water permeability rate of higher than 0.8 Lm?2h?1bar?1. Also disclosed are methods of preparing the above-described support and composite hollow fiber.

Abstract: Atomically thin layers including pores, their method of manufacture, and their use are disclosed. In some embodiments, pores may be formed in an atomically thin layer by growing the atomically thin layer on exposed portions of a substrate that includes islands comprising a material that is different than the material of the substrate. In some embodiments, pores and/or defects may be formed in an atomically thin layer by employing growth conditions that promote the formation of defects and/or pores. In certain embodiments, pores and/or defects may be etched to enlarge their size.

Abstract: Disclosed is a thin film composite hollow fiber that includes an outer support layer having a thickness of 10 to 1000 ?m and a polyamide thin film layer having a thickness of 1 to 10000 nm; and has a transmembrane pressure resistance rate of higher than 15 bar and a pure water permeability rate of higher than 0.8 Lm?2h?1bar?1. Also disclosed are methods of preparing the above-described support and composite hollow fiber.

Abstract: According to some aspects, a semi-permeable membrane is provided for performing separation processes as well as its method of manufacture. In some instances, a membrane may include a porous substrate, and an active layer disposed upon the substrate. The active layer may include at least one atomically thin layer having a plurality of open pores that allow transport of some species through the membrane while restricting transport of other species through the membrane. The open pores may have a mean pore size between 0.5 nm and 10 nm and a number density between 109 cm?2 and 1014 cm?2.

Abstract: A composite nanofiltration membrane that includes a support layer having a thickness of 100 nm to 10 mm and a cross-linked chitosan thin layer having a thickness of 10 to 1000 nm, in which the support layer is formed of a polymer; the cross-linked chitosan thin layer, disposed only on the top surface of the support layer, contains links each formed from a cross-linking agent, which is trimesoyl chloride, iso-phthaloyl dichloride, sebacoyl chloride, or a combination thereof; and the membrane has a mean pore size less than 1 nm. Also disclosed are a method for preparing such a composite nanofiltration membrane and a composite nanofiltration membrane prepared according to the method.

Abstract: Disclosed is a thin film composite hollow fiber that includes an outer support layer having a thickness of 10 to 10000 ?m and a polyamide thin film layer having a thickness of 1 to 10000 nm; and has a transmembrane pressure resistance rate of higher than 15 bar and a pure water permeability rate of higher than 0.8 Lm?2 h?1 bar?1. Also disclosed are methods of preparing the above-described support and composite hollow fiber.