Traditional ptychography usually assumes that the objects being imaged scatter light without changing its polarization state. However, when this assumption does not hold, we have shown the need for a more comprehensive vectorial approach to ptychography to accurately characterize such objects.
In this presentation, I will cover the fundamental concepts of light polarization and introduce...
X-ray ptychography currently relies on monochromatic sample illumination, typically produced by selecting an x-ray beam energy with a monochromator to achieve the required temporal coherence. However, for broadband sources, this means that most of the flux is unused. Finding an alternative to monochromators to use the flux more efficiently would be transformative, in particular for laboratory...
Recent advances in phase-retrieval-based x-ray imaging methods have demonstrated the ability to reconstruct 3D distortion vector fields within a nanocrystal by using coherent diffraction information from multiple crystal Bragg reflections [1-6]. However, these works do not provide a solution to the challenges encountered in imaging lattice distortions in crystals with significant defect...
Butterfly scales are microscopic bio-composites made of chitin embedded in a protein matrix, often along with pigments. A common structure consists of a laminar thin film (180-200 nm thick) connected to a sculpted upper lamina via pillar-like trabeculae. The upper lamina is made of longitudinal ridges connected by cross-ribs [1]. The cuticle of these scales produces colour by incorporating...
Many nano and quantum devices have intricate, low-dimensional, non-uniform, or hierarchical structures, spanning from millimeters down to sub-nanometer sizes, on surfaces and interfaces, making high-resolution surface-sensitive characterizations imperative for understanding their function-structure relationship. This often entails visualizing surface-supported and buried planar mesoscale...
