关键词：
Pancharatnam-Berry phase;Photonic spin Hall effect;metasurface
摘要：
Observation of photonic spin Hall effect (SHE) manifested by spin-dependent splitting of light in a dielectric-based birefringent metasurface is reported experimentally. By designing the metasurface with homogeneous phase retardation but space-variant optical axis directions, we govern the photonic SHE via space-variant Pancharatnam-Berry phase originated from the local polarization manipulation of the metasurface, essentially, the spin-orbit interaction between the light and the metasurface. Modulating the polarization distribution of the incident light and/or the structure geometry of the metasurface, the photonic SHE could be tunable. This type of metasurface offers an effective way to manipulate the spin-polarized photons and a route for spin-controlled nanophotonic applications.
摘要：
An efficient protocol for ligand-free Cu-catalyzed N-arylation of heteroarylamines has been developed. With the use of 1% CuI, a wide range of aryl iodides and bromides coupled with heteroarylamines to afford the corresponding products in high yields. Further, this protocol is particularly suitable for reactions of the most hindered aryl iodides with 2-aminopyridines. (C) 2014 Elsevier Ltd. All rights reserved.
期刊：
Journal of Theoretical and Applied Information Technology,2012年46(1):114-119 ISSN：1817-3195
通讯作者：
Li, L.
作者机构：
[Xu, Tian; Li, Long] Department of Mathematics and Computational Science, Hengyang Normal University, Hengyang, 421008, China;[Yang, Jie] School of Mathematical Sciences, Dalian University of Technology, Dalian, 116024, China;[Liu, Yan] Department of Applied Mathematics, Dalian Polytechnic University, Dalian, 116034, China
通讯机构：
Department of Mathematics and Computational Science, Hengyang Normal University, China
