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“Efficient phosphor-free, white light emission by using ordered arrays of GaN/InGaN nanocolumnar LEDs grown by Selective Area MBE” by E. Calleja, A. Bengoechea-Encabo, S. Albert, M.A. Sanchez-García, F. Barbagini, E. Luna, A. Trampert , U. Jahn , and P. Lefebvre was selected for the WOFE-2011 BEST PAPER AWARD!