Abstract: A stretchable strain sensor includes a light-emitting element, an optical structure, and a photo-detective element. The stretchable strain sensor is located in a path of light emitted from the light-emitting element. The optical structure is configured to have optical properties that change in response to stretching of at least a portion of the stretchable strain sensor. The photo-detective element is configured to detect light transmitted through the optical structure or reflected through the optical structure.

Abstract: A stretchable strain sensor includes a light-emitting element, an optical structure, and a photo-detective element. The stretchable strain sensor is located in a path of light emitted from the light-emitting element. The optical structure is configured to have optical properties that change in response to stretching of at least a portion of the stretchable strain sensor. The photo-detective element is configured to detect light transmitted through the optical structure or reflected through the optical structure.

Abstract: A polymer having a repeating unit represented by Formula 1, wherein R1 through R14, X1, and Ar1 are the same as defined in the detailed description, and an organic light-emitting diode including the polymer are described.

Abstract: A polymer blend including a first polymer having a unit represented by Formula 1 and a second polymer having a unit represented by Formula 2: wherein in Formulae 1 and 2, R1 through R13, l, and m are the same as defined in the detailed description.

Abstract: Disclosed herein is a monomer for binding nano-metal, which is useful for the preparation of a conductor having increased conductivity with ensuring flexibility and transparency. Polymerization of the monomer for binding nano-metal provides a conductive polymer composite including a nano-metal rod. A method of preparing the conductive polymer composite is also provided.

Abstract: A fluoro group-containing compound, a fluoro group-containing polymer, an organic light emitting device including the polymer, and a method of manufacturing the organic light emitting device are provided.

Abstract: Provided are methods of manufacturing an ultra-thin inorganic semiconductor film and methods of manufacturing three-dimensional (3D) semiconductor device using the ultra-thin inorganic semiconductor film. A method of manufacturing the ultra-thin inorganic semiconductor film includes preparing a Ge substrate, forming an amorphous graphene layer on the Ge substrate, forming an ultra-thin inorganic semiconductor film on the amorphous graphene layer, and transferring the ultra-thin inorganic semiconductor film to a target substrate. The ultra-thin inorganic semiconductor film is a Si thin film or a Ge thin film and may have a thickness of 50 ?m or less.

Abstract: A solar light concentration plate comprises a first hologram which receives solar light and diffracts incident light in a range of an incident angle, and first and second light guides respectively disposed on both sides of the first hologram, wherein at least one of the first and second light guides has an outer surface substantially inclined to an inner surface of the at least one of the first and second light guides.

Abstract: According to example embodiments, a wire structure includes a first wire that includes a first wire core and a first carbon shell surrounding the first wire core, and a second wire that extends in a longitudinal direction from the first wire. The first wire core has a wire shape. The first carbon shell contains carbon.

Abstract: Provided are compounds containing a phosphorescence unit, an emitting polymer, and an organic light emitting device (OLED) containing an organic layer including the emitting polymer. The OLED is useful in portable electronic equipment where low power consumption and low driving voltage are desirable.

Abstract: Disclosed herein is a monomer for binding nano-metal, which is useful for the preparation of a conductor having increased conductivity with ensuring flexibility and transparency. Polymerization of the monomer for binding nano-metal provides a conductive polymer composite including a nano-metal rod. A method of preparing the conductive polymer composite is also provided.

Abstract: A monomer for binding nano-metal, which is useful for the preparation of a conductor having increased conductivity with ensuring flexibility and transparency. Polymerization of the monomer for binding nano-metal provides a conductive polymer composite including a nano-metal rod. A method of preparing the conductive polymer composite is also provided.

Abstract: A cross-linkable polymer including 1,1?-binaphthyl repeating units linked through 6,6?-arylene groups, a cross-linked material comprising the cross-linkable polymer, an organic light emitting device including the cross-linked material, and a method of preparing the organic light emitting device are each disclosed.

Abstract: A solar light concentration plate comprises a first hologram which receives solar light and diffracts incident light in a range of an incident angle, and first and second light guides respectively disposed on both sides of the first hologram, wherein at least one of the first and second light guides has an outer surface substantially inclined to an inner surface of the at least one of the first and second light guides.

Abstract: An organic light emitting device (OLED) includes a polymeric fluorescent light emitting material doped with a phosphorescent dopant to form a fluorescent light emitting layer. The fluorescent light emitting layer may inhibit or prevent device degradation without affecting light emission from the light emitting layer, and may improve the service life of the OLED.

Abstract: A solar light concentration plate comprises a plurality of holograms diffracting incident light wherein each of the plurality of the holograms has a thickness, at least one intermediate light guide plate disposed between the plurality of the holograms, and a pair of external light guide plates disposed on outer surfaces of outermost holograms of the plurality of the holograms, wherein at least one of the pair of the external light guide plates has an inner surface and an outer surface inclined relative to the inner surface.

Abstract: A solar light concentration plate comprises a first hologram which receives solar light and diffracts incident light in a range of an incident angle, and first and second light guides respectively disposed on both sides of the first hologram, wherein at least one of the first and second light guides has an outer surface substantially inclined to an inner surface of the at least one of the first and second light guides.

Abstract: According to example embodiments, a wire structure includes a first wire that includes a first wire core and a first carbon shell surrounding the first wire core, and a second wire that extends in a longitudinal direction from the first wire. The first wire core has a wire shape. The first carbon shell contains carbon.

Abstract: An organic light emitting device (“OLED”) including a substrate; a plurality of polymer beads disposed on a substrate; a light emitting layer covering the plurality of polymer beads and having an embossed structure; and a cathode disposed on the light emitting layer.

Abstract: A photosensitive quantum dot including a quantum dot, and a plurality of photosensitive moieties that are bound to a surface of the quantum dot, wherein each of the photosensitive moieties includes silicon (Si) and a photosensitive functional group. Also disclosed are a composition for forming a quantum dot-containing pattern, where the composition includes the photosensitive quantum dot, and a method of forming a quantum dot-containing pattern using the composition.