Large scale fabrication of nitrogen vacancy-embedded diamond nanostructures for single-photon source applications |
Cone structure on the top end of the pillars: (a) diamond pillar array of diameter 300 nm, period 1.5 μm, fabricated with the HSQ approach; (b) diamond pillar array with pillar diameter of 250 nm, period 1.5 μm, fabricated through the PMMA approach. The scale bar is 2 μm. |