Numerous attempts have been made to prepare electrocatalytic nanomaterials and construct electrode systems for effective water-splitting reactions. The growth of transition metal-based heterostructures directly on specific substrates is promising for electrocatalytic applications. In the current work, nickel/iron hydroxide nanohybrids and nickel/iron/selenide nanohybrids are successfully synthesized on selected substrates such as graphite and nickel foil in solution. In particular, nickel/iron/selenide nanohybrids on nickel foil (NF-[NiFeSe]) exhibit substantially enhanced OER catalytic activity with low overpotential and Tafel slope values, as well as high durability. The use of pliable nickel foil with the direct growth of heterostructured nickel/iron/selenide nanohybrids can be employed to effectively and economically design high-performance water-splitting devices.

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In this paper we introduce augmented broadcasting service scenarios which combines augmented reality service with broadcasting environment. As the broadcasting environment is different from mobile service environment, there are many restrictions in developing full AR services in TV. However TV has strong benefit of large screen, high quality contents, advanced user interface for motion and voice, and smart TV applications, which means that they will enhance the possibility of success for augmented broadcasting service. This paper proposes metadata structure containing information for augmentation region, time, augmented contents, and registration information for natural composition. We also implemented test bed system comprised of authoring server, broadcasting server, and user terminal for verifying metadata in broadcasting system.