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. Author manuscript; available in PMC: 2022 Sep 1.
Published in final edited form as: IEEE J Sel Top Quantum Electron. 2021 Feb 23;27(5):4800109. doi: 10.1109/jstqe.2021.3061462

Fig. 1:

Fig. 1:

(a) Contour plot of the magnitude of the electric field showing the largest E-field enhancement occurring at the tips of the branches of the star (Adapted from Ref. 3). Scale bar is 50 nm. (b) Transmission electron microscopy image of GNS. (c) Whole 3D model and simulation of electromagnetic field around a GNS (Adapted from Ref. 29)