Abstract: A substrate inspection apparatus includes a light source unit, a pulsed beam matching unit, a substrate support unit, an incidence angle adjusting unit, and a detecting unit. The light source unit emits a first laser beam having a first wavelength and a second laser beam having a second wavelength. The pulsed beam matching unit matches the first laser beam and the second laser beam to superimpose a pulse of the first laser beam on a pulse of the second laser beam in time and space. The substrate support unit supports a substrate to be inspected. The incidence angle adjusting unit adjusts angles of incidence of the matched first laser beam and second laser beams to irradiate the first laser beam and the second laser beam on the substrate, and mixes the first laser beam and the second laser beam to generate an evanescent wave on the substrate. The evanescent wave generates scattered light due to a defect of the substrate.

Abstract: Various embodiments of the disclosure relate to a method and device for providing a chatbot participating chat service to a chat room corresponding to a real-time broadcast channel on a display device and providing a chatbot participating chat service based on a user chat history, a chatbot chat history, or real-time broadcast channel content in the number of chatbots determined based on a user input or the type of the real-time broadcast channel. To that end, a method may include: receiving a real-time broadcast channel, obtaining an input including at least one of a chatbot chat mode and a number of chatbots in a chat room corresponding to the real-time broadcast channel, and determining the number of chatbots in the chat room corresponding to the real-time broadcast channel based on the input.

Abstract: Various embodiments of the disclosure relate to a method and apparatus for determining a chat mode based on real-time viewing video information output from a display device, and providing a customized chat room user interface based on the determined chat mode. The display device may include receiving a real-time viewing video and real-time viewing video information, determining a chat mode of a chat room corresponding to the real-time viewing video based on the real-time viewing video information, and outputting a user interface including at least one preset phrase or at least one emoticon based on the chat mode.

Abstract: Provided is a polarization measuring device including a stage on which a measurement target is provided, a light source assembly configured to emit incident light, a first polarimeter configured to polarize the incident light, a second polarimeter configured to polarize reflected light reflected from the measurement target that is irradiated by the incident light, a filter assembly configured to remove noise from the reflected light, and a detector configured to receive the reflected light and measure an intensity of the reflected light and a phase of the reflected light.

Abstract: A quantum dot composition, a preparation method therefor, and a cured film, a color filter and a display device that comprise the same are described. Specifically, a solventless quantum dot composition comprises quantum dots, which are surface-treated with two types of ligands. As a result, the quantum dot composition exhibits low viscosity, excellent optical properties, and high storage stability.

Abstract: The present invention relates to polymer beads having a water-insoluble inorganic compound encapsulated therein, and their preparation method and use. In the present invention, the water-insoluble inorganic compound which has limitations on its use because of the characteristic of precipitates in an aqueous solution is encapsulated in the polymer beads. This encapsulation provides an increase in the utility of the water-insoluble inorganic compound and at the same time, imparts the activity of the water-insoluble inorganic compound to the polymer, thus increasing the function of the polymer. Accordingly, the polymer beads having the water-insoluble inorganic compound encapsulated therein, which are prepared by the inventive method, can be advantageously used in various fields, including medical and electronic industries.

Abstract: The present invention relates to macroporous chitosan beads having 5-200 ?m in size of relatively large and uniform pores that are distributed from surface to core region. The macroporous chitosan beads of the present invention make cell culturing efficient. Cells can attach to them efficiently due to their large surface area.

Abstract: The present invention relates to macroporous chitosan beads having 5-200 &mgr;m in size of relatively large and uniform pores that are distributed from surface to core region, and a preparation method thereof compring the following steps; by dropping chitosan solution, aqueous chitosan solution or their mixture into the low-temperature of organic solvent or liquid nitrogen; and by regulating pore size by phase separation method via temperature difference.