Size Measurement of Nanoparticle Assembly Using Multilevel Segmented TEM Images

Table 1

Summary of multilevel segmentation results from TEM images. The average diameters are also compared to those obtained from 50 nanoparticles by Image J program [18].

Images	Number of particles	Mean of area (nm^2)	SD of area (nm^2)	Mean of diameter (nm)	SD of diameter (nm)	Diameter (nm) from Image J
A1	99	17.9	7.9	4.6	1.1	N/A
A2	154	18.5	7.7	4.8	1.0	N/A
A3	659	17.6	7.8	4.6	1.1	5.0 ± 0.9
B3	1598	13.3	8.7	3.9	1.3	4.2 ± 1.0
C3	971	12.9	9.4	3.8	1.4	4.2 ± 0.9
D3	1416	16.2	16.7	4.1	1.9	4.5 ± 1.6