Fig. 4
From: Probing of sub-picometer vertical differential resolutions using cavity plasmons
Simulations of the thermal-expansion-induced spectral shift. a Peak position of a 70-nm-diameter PVP-coated Ag-NWOM as a function of the thickness of the PVP coating. The vertical differential sensitivity with a 2.3- and a 1-nm-thick PVP layer is 13.5 and 39.8 nm Å−1, respectively. b Peak position of a 2.3-nm-thick dielectric layer-coated 70-nm-diameter Ag-NWOM as a function of the RI of the dielectric layer
