Abstract: Disclosed herein is a method for 2D epitaxial growth comprising: forming a single crystalline h-BN template; forming a plurality of nuclei by depositing a heterogeneous precursor on the h-BN template; and forming a heterogeneous structure layer by growing the plurality of deposited nuclei with a van der Waals epitaxial growth, wherein the heterogeneous structure layer is a single crystal.

Abstract: Disclosed is an information providing apparatus capable of communicating with other electronic devices and an external server in a 5G communication environment by executing a mounted artificial intelligence (AI) algorithm and/or machine learning algorithm. The apparatus includes a camera, a display, a processor, and the like. By providing the information providing apparatus, a user-friendly AR item based on the recognized object may be provided.

Abstract: Disclosed is a mobile terminal for providing information based on an image, wherein the mobile terminal executes at least one of an installed artificial intelligence (AI) algorithm and a machine learning algorithm, and is capable of communicating with other electronic devices and external servers in a 5G communication environment. The mobile terminal includes a camera, a display, and a processor. Accordingly, since an image capture target can be accurately recognized, various services for improving user convenience can be provided.

Abstract: An image-based information providing apparatus capable of executing a mounted artificial intelligence (AI) algorithm and/or machine learning algorithm and communicating with other electronic devices and an external server in a 5G communication environment is provided. The image-based information providing apparatus includes a camera, a display, and a processor. Therefore, it is possible to correctly recognize an object to be photographed, and provide various services for the convenience of a user.

Abstract: Disclosed herein is a method for 2D epitaxial growth comprising: forming a single crystalline h-BN template; forming a plurality of nuclei by depositing a heterogeneous precursor on the h-BN template; and forming a heterogeneous structure layer by growing the plurality of deposited nuclei with a van der Waals epitaxial growth, wherein the heterogeneous structure layer is a single crystal.

Abstract: Disclosed is a mobile terminal for providing information based on an image, wherein the mobile terminal executes at least one of an installed artificial intelligence (AI) algorithm and a machine learning algorithm, and is capable of communicating with other electronic devices and external servers in a 5G communication environment. The mobile terminal includes a camera, a display, and a processor. Accordingly, since an image capture target can be accurately recognized, various services for improving user convenience can be provided.

Abstract: An image-based information providing apparatus capable of executing a mounted artificial intelligence (AI) algorithm and/or machine learning algorithm and communicating with other electronic devices and an external server in a 5G communication environment is provided. The image-based information providing apparatus includes a camera, a display, and a processor. Therefore, it is possible to correctly recognize an object to be photographed, and provide various services for the convenience of a user.

Abstract: Disclosed is an information providing apparatus capable of communicating with other electronic devices and an external server in a 5G communication environment by executing a mounted artificial intelligence (AI) algorithm and/or machine learning algorithm. The apparatus includes a camera, a display, a processor, and the like. By providing the information providing apparatus, a user-friendly AR item based on the recognized object may be provided.

Abstract: A method for fabricating a graphene thin film by reducing graphene oxide and a method for fabricating an optoelectronic device using the same are provided. The method for fabricating a graphene thin film includes preparing graphene oxide; preparing graphene through reducing the graphene oxide by a sulfonyl hydrazide-based reducing agent; preparing a graphene dispersed solution by dispersing the graphene into an organic solvent; and fabricating a graphene thin film by applying the graphene dispersed solution. The sulfonyl hydrazide-based reducing agent may be a compound having a sulfonyl hydrazide substituent of Chemical Formula 1 in the present disclosure in which A may be any one in Chemical Formula 2 in the present disclosure.

Abstract: A method for fabricating a graphene thin film by reducing graphene oxide and a method for fabricating an optoelectronic device using the same are provided. The method for fabricating a graphene thin film comprises: (a) preparing graphene oxide; (b) preparing graphene through reducing the graphene oxide by a sulfonyl hydrazide-based reducing agent; (c) preparing a graphene dispersed solution by dispersing the graphene into an organic solvent; and (d) fabricating a graphene thin film by applying the graphene dispersed solution. The sulfonyl hydrazide-based reducing agent may be a compound having a sulfonyl hydrazide substituent of Chemical Formula 1 in the present disclosure in which A may be any one in Chemical Formula 2 in the present disclosure.

Abstract: A graphene-iron oxide complex consists of graphene and needle-like iron oxide nanoparticles grown on a surface of the graphene, and a fabricating method thereof includes (A) preparing a reduced graphene dispersed solution, (B) mixing the dispersed solution with a solution containing iron oxide precursors to prepare a mixture, (C) stirring the mixture to prepare a graphene-iron oxide dispersed solution containing the graphene-iron oxide complex that needle-like iron oxide nanoparticles are grown on the surface of the graphene, and (D) separating the graphene-iron oxide complex from the graphene-iron oxide complex dispersed solution.

Abstract: A heavy metal remover of a core-shell structure comprises a core including carbon nanotubes (CNT) that can aggregate and scatter in a reversible manner, and a shell including iron oxide.