Figure 5.

(a) The number of nanocrystals as a function of time for four different magnifications, imaged with pixel dwell time of 5 μs and i_e = 20 pA (red triangle: M = 80,000x, blue square: M = 100,000x, green diamond: M = 120,000x, yellow inverted triangle: M = 150,000x). (b) Histograms of the number of new particles as a function of time for each magnification. (c) Box plots of the induction threshold doses as a function of electron dose per scan (c.f. Methods for calculation of electron dose per scan from magnification). On each box, the central mark is the median, the edges of the box are the 25^th (bottom edge) and 75^th percentiles (top edge), and the whiskers extend to the most extreme data points not considered outliers. Values with a similar letter do not differ significantly (Wilcoxon rank sum test, P < 0.01).