Zheng, ChanglinWong-Leung, JenniferGao, QiangJagadish, ChennupatiEtheridge, JoanneTan, Hark Hoe2015-12-131530-6984http://hdl.handle.net/1885/74082AlGaAs/GaAs quantum well heterostructures based on core-multishell nanowires exhibit excellent optical properties which are acutely sensitive to structure and morphology. We characterize these heterostructures and observe them to have 3-fold symmetry abouKeywords: Aberration-corrected; ADF-STEM; AlGaAs/GaAs; Annular dark field scanning transmission electron microscopy; Crystal polarities; Polarity; Quantum well heterostructures; Structure and morphology; Aluminum gallium arsenide; Gallium arsenide; Growth (material ADF-STEM; AlGaAs/GaAs; growth; nanowire; Polarity201310.1021/nl401680k2016-02-24