Abstract: A semiconductor measurement apparatus includes an illuminator configured to output light having a first wavelength band and light having a second wavelength band, different from the first wavelength band, a stage on which a test object is positioned, a camera configured to receive light reflected or scattered from the test object or transmitted through the test object, and a controller configured to control the illuminator and the camera, and to measure, based on information indicated by the light received by the camera, a plurality of structures included in the test object. The controller is configured to set an exposure time of the camera to a first exposure time while the illuminator outputs the light having the first wavelength band, and to set the exposure time of the camera to a second exposure time, different from the first exposure time, while the illuminator outputs the light having the second wavelength band.

Abstract: According to an embodiment, a source device for providing a screen sharing service with a sync device may include a display, a communication circuit configured to perform communication with the sync device, and a processor configured to receive a connection request for the screen sharing service from the sink device through the communication circuit, execute a home application for providing a home screen of the sink device according to the received connection request, display an execution screen of the home application on the display according to execution of the home application, and transmit image data corresponding to the displayed execution screen of the home application to the sink device through the communication circuit.

Abstract: Proposed is a system based on the Internet of Media Things (IoMT). The system may include at least one first sensor configured to perform a predetermined function in a target space or region, and a second sensor based on at least one of video or audio. The system may also include a first analysis processor configured to generate first analysis data of a set mission within the target space or region based on first data sensed by the first sensor. The system may further include a second analysis processor configured to generate second analysis data for a set mission within the target space or region based on second data sensed by the second sensor. The system may further include storage configured to store the sensed first data and second data and the first and second analysis data based on the identifier.

Abstract: Disclosed is a display device. The display device of the present disclosure includes: a flexible display panel; a cover sheet which is located in a rearward direction of the display panel, and has a plurality of holes; and a roller which extends long, and around or from which the display panel and the cover sheet are wound or unwound, wherein the cover sheet includes: a first section which extends long along a longitudinal direction of the roller; and a second section which extends long along the longitudinal direction of the roller, and is disposed side by side with the first section in a direction intersecting with the longitudinal direction of the roller; wherein the plurality of holes include: a plurality of first holes which are located in the first section, and disposed at a first interval; and a plurality of second holes which are located in the second section, and disposed at a second interval different from the first interval.

Abstract: An optical system, comprising: (i) multiple input optical fibers; (ii) an optical mode multiplexer/demultiplexer coupled to said input optical fibers with, said optical mode multiplexer/demultiplexer comprising a plurality of metamaterial structures having length and forming at least one stage of metamaterials, the at least one stage of metamaterials is being situated on a surface of the optical mode multiplexer/demultiplexer facing the input optical fibers, and the at least one stage of metamaterials is oriented at angles between 60 and 120 degrees relative to the axis of the input fibers; and the metasurfaces are structured to receive a first optical signal having a first mode from at least one of said multiple input optical fibers and convert the first mode to a different mode.

Abstract: Systems, devices, and techniques for performing wavelength division multiplexing or demultiplexing using one or more metamaterials in an optical communications systems are described. An optical device may be configured to shift one or more phase profiles of an optical signal using one or more stages of metamaterials to multiplex or demultiplex wavelengths of optical signals. The optical device may be an example of a stacked design with two or more stages of metamaterials stacked on top of one another. The optical device may be an example of a folded design that reflects optical signals between different stages of metamaterials.

Abstract: Systems, devices, and techniques for performing wavelength division multiplexing or demultiplexing using one or more metamaterials in an optical communications systems are described. An optical device may be configured to shift one or more phase profiles of an optical signal using one or more stages of metamaterials to multiplex or demultiplex wavelengths of optical signals. The optical device may be an example of a stacked design with two or more stages of metamaterials stacked on top of one another. The optical device may be an example of a folded design that reflects optical signals between different stages of metamaterials.

Abstract: According to an embodiment, a source device for providing a screen sharing service with a sync device may include a display, a communication circuit configured to perform communication with the sync device, and a processor configured to receive a connection request for the screen sharing service from the sink device through the communication circuit, execute a home application for providing a home screen of the sink device according to the received connection request, display an execution screen of the home application on the display according to execution of the home application, and transmit image data corresponding to the displayed execution screen of the home application to the sink device through the communication circuit.

Abstract: An actuator according to one aspect of the present invention includes a first member in which a shape is transformed from a first position, which is either rolled or flat, to a second position different from the first position, and a restoring force is stored when the shape is transformed from the first position to the second position, and a second member which is joined to the first member along the length direction of the first member and in which the shape of the second position is stored.

Abstract: This application relates to a multifunctional recovery apparatus of shore adhesion oils. The multifunctional recovery apparatus of shore adhesion oils removing and recovering oil spilling and sticking at a shore is mounted on a four-wheel vehicle. A skimmer assembly separating oil sticking to the surface of rocks at a shore, and absorbing and recovering an oil spill at the shore is installed at the front of the four-wheel vehicle. The skimmer assembly includes a rotary skimmer having a rotary roller separating oil, and a vacuum suction skimmer suctioning oil floating on a water surface. The rotary skimmer and the vacuum suction skimmer may be selectively or simultaneously used, if necessary.

Abstract: This application relates to a multifunctional recovery apparatus of shore adhesion oils. The multifunctional recovery apparatus of shore adhesion oils removing and recovering oil spilling and sticking at a shore is mounted on a four-wheel vehicle. A skimmer assembly separating oil sticking to the surface of rocks at a shore, and absorbing and recovering an oil spill at the shore is installed at the front of the four-wheel vehicle. The skimmer assembly includes a rotary skimmer having a rotary roller separating oil, and a vacuum suction skimmer suctioning oil floating on a water surface. The rotary skimmer and the vacuum suction skimmer may be selectively or simultaneously used, if necessary.

Abstract: An optical device includes: (1) a substrate; and (2) multiple meta-lenses disposed on the substrate, each meta-lens of the meta-lenses including multiple nanofins disposed on a respective region of the substrate, the nanofins together specifying a phase profile of the meta-lens.

Abstract: A meta-lens having a phase profile includes a substrate and a plurality of nanostructures disposed on the substrate. Each individual nanostructure of the nanostructures imparts a light phase shift that varies depending on a location of the individual nanostructure on the substrate. The light phase shifts of the nanostructures define the phase profile of the meta-lens. The varying light phase shifts can be realized by, e.g., changing orientations of nanofins or changing diameters of nanopillars.

Abstract: An optical device includes: (1) a substrate; and (2) multiple meta-lenses disposed on the substrate, each meta-lens of the meta-lenses including multiple nanofins disposed on a respective region of the substrate, the nanofins together specifying a phase profile of the meta-lens.

Abstract: A recovery system for large-scale spilled oil flowing onto and adhered to a shore is disclosed. The recovery system for large-scale oil flowing onto and adhered to a shore is mounted on an amphibious vehicle that can move on a neritic zone and land. A skimmer assembly is installed in a front of the amphibious vehicle. An oil collection assembly is foldably provided on each of front opposite sides of the amphibious vehicle, thereby easily collecting oil. A recovered oil treatment assembly is mounted on the amphibious vehicle and configured to accommodate the oil recovered by the skimmer assembly therein and to store separated oil by separating water from the accommodated oil.

Abstract: A meta-lens having a phase profile includes a substrate and a plurality of nanostructures disposed on the substrate. The nanostructures together define the phase profile of the meta-lens. The phase profile achieves an off-axis focus. Each nanostructure is designed according to at least one design parameter of the nanostructure that imparts a phase shift of light passing through the nanostructure.

Abstract: Provided is a time machine function providing method including setting, at a streaming client installed on the electronic device, a streaming session with a player installed on the electronic device to provide a live streaming service; sequentially transmitting, by the streaming client, live stream data received over a network to the player through the streaming session; setting, at the streaming client, a time machine control session with the player; receiving, at the streaming client, a time machine control request from the player through the time machine control session; and transmitting, by the streaming client, live stream data of a channel corresponding to a time machine control request that includes play location information among time machine control requests sequentially from a play location specified based on the play location information through the streaming session.

Abstract: A non-transitory computer-readable recording medium stores computer-executable instructions that, when executed by one or more processors, causes the one or more processors to perform operations including receiving, at a first electronic device, high quality live stream data through a high quality channel; playing back the high quality live stream data; receiving low quality live stream data through a low quality channel as the electronic device is set as a seed device in response to creation of the high quality channel; and sharing the received low quality live stream data by transmitting the received low quality live stream data.

Abstract: An optical device comprises a substrate and a metasurface. The metasurface comprises a plurality of nanoscale elements disposed on the transparent substrate at different orientations. The orientations of the nanoscale elements define a phase profile such that the nanoscale elements convert an incident light into an output light propagating substantially without diffraction.

Abstract: Provided is a method and system for managing a sliding window for a time machine function, the method including creating a virtual sliding piece array that includes information for specifying pieces from the latest point in time of live stream data to a previous point in time of a time machine available time preset to provide the time machine function; creating a streaming sliding window for specifying a preset number of continuous pieces among pieces specified in the virtual sliding piece array; shifting the streaming sliding window to a piece index of a play location requested for the live stream data, and downloading the pieces specified in the virtual sliding piece array through the streaming sliding window; and streaming stream data from a streaming client installed on an electronic device to a player installed on the electronic device using the downloaded pieces in order to provide a live streaming service.