The surfaces render of the reconstructed volume and an axial slice through the needle. (a) Semi-transparent external surface of the tomogram of the needle with opaque surfaces for the QDs below the platinum deposition. A projection of one of the central QDs is included in the base of the needle. (b) Segmentation of the QDs in the tomogram, showing that the stacking of QDs follows a straight line that deviates 10° from the growth direction. (c) Slice through the upper QD of the reconstructed tomogram where we have superimposed a circle to evidence the elongation in the direction of the optical axis of the microscope. The upper and lower QDs of the Figure 2b have been included with a white and black dotted line respectively.
Hernández-Saz et al. Nanoscale Research Letters 2012 7:681 doi:10.1186/1556-276X-7-681