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. 2015 Aug 4;6:7915. doi: 10.1038/ncomms8915

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(a) Experimental SEF map obtained for the Si antennas. It can be clearly seen that fluorescence is enhanced over the antennas. (b) SEF enhancement factor (F_SEF) obtained from the maximum values over each antenna in a, calculated in similar way as F_SERS. The error bars show half the difference between the minimum and the maximum value in each nanoantenna.