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. 2019 Oct 1;9(10):1401. doi: 10.3390/nano9101401

Figure 5.

Figure 5

Nanoplasmonic slot waveguide. (a) Schematic showing that the input and Stokes powers are guided by the waveguide. (b) Scanning electron microscope image of the gold-covered slot in top view. (c) Cross-section of a nanoplasmonic slot waveguide with a gap of 15 nm.