Imaging and optical properties of single core-shell GaAs-AlGaAs   nanowires
  We study the optical properties of a single core-shell GaAs-AlGaAs nanowire (grown by VLS method) using the technique of micro-photoluminescence and spatially-resolved photoluminescence imaging. We observe large linear polarization anisotropy in emission and excitation of nanowires. 
Thang B. Hoang, L. V. Titova, H. E. Jackson, L.M. Smith, J.M.   Yarrison-Rice, Y. Kim, H. J. Joyce and C. Jagadish