We demonstrate that sub-wavelength optical images borne on partially-spatially-incoherent light can be recovered, from their far-field or from the blurred image, given the prior knowledge that the image is sparse, and only that. The reconstruction method relies on the recently demonstrated sparsity-based sub-wavelength imaging. However, for partially-spatially-incoherent light, the relation bet...

Understanding of the mechanisms of annealing twin formation is fundamental for grain boundary engineering. In this work, the formation of annealing twins in a 304L austenitic stainless steel is examined in relation to the thermo-mechanical history. The behavior of annealing twins of various morphologies is analyzed using an in-situ annealing device and EBSD. The results confirm that there is a ...

Slip transfer at grain boundaries and annealing twin was studied in polycrystalline Ni by means of slip trace analysis. or blocking assessed >200 related with geometrical criteria that establish the alignment between active systems across boundaries. It found mainly occurs low-angle regular a Luster–Morris parameter >0.8 stands for best criterion to assess transfer. In case coherent incoherent ...

We generate experimentally optical bottle beams from incoherent double-charge white-light vortices, and show that their parameters can be efficiently controlled by varying the beam focusing conditions.