Figure 1
Gold nanostructure around a nanosphere after oblique gold evaporation and wet etching. a shows 3D conformal gold nanostructure after gold evaporation; b is 3D non-conformal gold nanostructure when the angle θc is positive; c shows the nanostructure after wet etching; and d is for calculating the thickness of the gold after evaporation in the x θ –y θ –z θ coordinate system, where the gold looks as if evaporated from the top of the nanosphere