Yasuhiko Arakawa Yasuhiko Arakawa Yasuhiko Arakawa (Japanese , "Arakawa Yasuhiko"; born 6 November 1952) is a Japanese physicist. His research focuses on semiconductor physics, including growth of nanostructures and their optoelectronic applications. Among his main achievements are the proposal of the concept of quantum dots and their application to quantum dot lasers, the observation of exciton-polariton Rabi-splitting in a semiconductor microcavity, or, recently, the first 3D photonic crystal nanocavity lasers with quantum dot gain. Yasuhiko Arakawa received a B.S. degree in 1975 and a Ph.D. degree in 1980, respectively, from the University of Tokyo, both in Electronics Engineering. In 1981 he became
The Rivers of Zadaa The Rivers of Zadaa The Rivers of Zadaa is the sixth novel in the Pendragon series by D. J. MacHale. This story takes place mainly on a territory called Zadaa. There will be two main tribes here: The Rokador and the Batu. The Rokador live in tunnels underground and are fair-skinned, while the Batu are dark-skinned and live in a sunbathed city called Xhaxhu in the desert. For years, the Rokador have relied on the Batu to protect them from other savage tribes on Zadaa, and the Batu have relied on the Rokador to provide them with water. But the