Figure 5: Strain analysis from lattice distortions in HRTEM image.

(a) An HRTEM image at t=1.5 s extracted from the same movie as Fig. 1a–d. Scale bar, 2 nm. (b) Lattice shear distortion along [1-10] determined from the red-boxed bcc1 area in a, analysed using the LADIA program. (c) Quantitative distribution of shear strain for atoms in the black-boxed region in b. The inset in c is the FFT of the HRTEM image corresponding to the black-boxed area in b. (d,f), Lattice normal distortion along [100] and [010], respectively, determined from the red-boxed bcc1 area in a. The atoms are coloured according to strain scale: colours for positive values represent tensile strain, and colours for negative values represent compressive strain. (e,g) Quantitative distribution of tensile strain along [100] and [010], respectively, for atoms in the black-boxed region in b. The frequency is the fraction of lattice points with a certain strain out of the total number of lattice points in the black-boxed area. The error bars represent the s.d.