Fig. 3: Figures of merit for simulated crystal reconstruction. | npj Computational Materials

Fig. 3: Figures of merit for simulated crystal reconstruction.

From: Concurrent multi-peak Bragg coherent x-ray diffraction imaging of 3D nanocrystal lattice displacement via global optimization

Fig. 3: Figures of merit for simulated crystal reconstruction.The alternative text for this image may have been generated using AI.

a Trend in multi-reflection loss function given by Equation (3) for the dislocation-free synthetic crystal. The units of this loss function are chosen not to mirror a physical quantity, but as result of a noise model robust to Poissonian noise that is routinely used in BCDI phase retrieval approaches. The red lines denote the beginning of a new optimization epoch. b Histogram of the simulated and reconstructed components of the vector u(x), along with point-to-point residuals of each vector component. c Error function fit to the reconstructed profile along the dashed line in Fig. 2a (X-Y slice). The spatial resolution was estimated from this fit to be ≃ 1.86 pixels, or ≃ 23 nm.

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