Extended Data Fig. 7: Evaluation of nanoparticle diameter d and interparticle gap a using a TEM image of a 59-nm nanoparticle monolayer.
From: Deep strong light–matter coupling in plasmonic nanoparticle crystals
a, TEM image of a monolayer of gold nanoparticles. b, Evaluation of nanoparticle sizes and interparticle gap sizes of the image in a using the software Image J. The software determines the size of the nanoparticles (coloured areas), giving the mean nanoparticle diameter. The interparticle gaps sizes were obtained by subtracting the particle diameters from the nearest-neighbour distances (white lines). c, Histogram of the nanoparticle diameters and fit with a Gaussian distribution. The mean values from the analysis of the TEM image in a are d = 60.6 nm and a = 1.5 nm. The scale bars are 100 nm.
