Figure 1From: Determination of the volume-specific surface area by using transmission electron tomography for characterization and definition of nanomaterialsElectron tomographic analysis of spherical gold nanoparticles. Figure 1A represents the micrograph gray value range that served for setting the threshold. The threshold was set at -15106.4, that is somewhere between the two peaks. Figure 1B shows a representative electron tomographic 3D-reconstruction of spherical gold NP. Bar: 50 nm. Figure 1C and Figure 1D show the correlation between the calculated and measured volumes and areas of ten electron tomograms.Back to article page