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. 2017 Apr 25;7:46095. doi: 10.1038/srep46095

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(a) Configuration two coupled gold NRs (I, II) irradiated by a normally incident LP light with x-polarization. The final outcome of (b) the side-by-side coalescence due to attraction with perpendicular alignment or (c) the end-to-end coalescence due to attraction with parallel alignment.