Figure 2
Top row: reference reconstructed images (modulus of the complex-valued ptychographs) acquired with the detector in energy integration mode and by using monochromatic beams at 11.0 keV (a) and 13.8 keV (b). The digital subtraction of (a,b) is reported in (c). Bottom row: reconstructed images acquired by using pink beam and the detector in colour mode when considering [Tlow, Thigh] = [9.6, 10.4] keV (d) and [Tlow, Thigh] = [12.5, 14.8] keV (e). The digital subtraction of (d,e) is reported in (f). [Scale bar = 25.0 m. Color bar for the above and below images representing the X-ray transmission].
