Figure 3
From: Revealing ultralarge and localized elastic lattice strains in Nb nanowires embedded in NiTi matrix

TEM study of lattice strain matching between Nb nanowires and the NiTi matrix.
(a) Bright field image of a microbeam fabricated by means of focus ion beam milling. (b) Enlarged view of a Nb nanowire in the beam. (c) HRTEM image of the region marked as c in (b). (d) TEM image of the microbeam upon loading to ~3.23% strain. (e) Enlarged TEM image of the region marked as e in (d), showing the three martensite plates (marked as M1, M2 and M3) nucleated in the NiTi matrix. (f–h) HRTEM images of the regions marked as f, g and h in (e). (i–l) Filtered HRTEM images of the regions marked as i in (c) and as j-l in (f–h).