Figure 1 (IMAGE)

Moscow Institute of Physics and Technology

Figure 1

Caption

Shown in violet, the wedge-shaped piece of dielectric material is 2 nanometers thick at its narrowest and is bordered by a sheet of graphene above and a piece of electrically conductive metal below. The needle of a near-field microscope excites regular, "unfocused" plasmons in graphene away from the tapered part of the wedge

Credit

Daria Sokol/MIPT Press Office

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