Phase-contrast x-ray imaging (PCI) is an innovative method that is sensitive to the refraction
of the x-rays in matter. PCI is particularly adapted to visualize weakly absorbing details like …

Phase-contrast X-ray imaging can improve the visibility of weakly absorbing objects (eg soft
tissues) by an order of magnitude or more compared to conventional radiographs …

Propagation-based phase-contrast x-ray imaging (PB-PCXI) generates image contrast by
utilizing sample-imposed phase-shifts. This has proven useful when imaging weakly …

Recently, Lorentz transmission electron microscopy (LTEM) has helped researchers
advance the emerging field of magnetic skyrmions. These magnetic quasi-particles …

For many soft-matter specimens, transmission electron microscopists face the double-bind of
low contrast images, due to weakly-scattering specimens, alongside severe limits on the …

With increased resolution in x-ray computed tomography, refraction adds increasingly to the
attenuation signal. Though potentially beneficial, the artifacts caused by refraction often …

Vector field electron tomography is a relatively new technique for quantitative
threedimensional imaging, combining phase retrieval with vector tomography to reconstruct …

In conventional x-ray radiography (eg, a chest radiograph), a patient is illuminated by the
penetrating x-rays. e patient attenuates the x-rays, and so casts a shadow on the detector …

This thesis investigates singularimetry in both optical and matter wave fields. The utility of
optical singularities for performing phase measurements was demonstrated using a three …

To satisfy the demands of the continuous zoom stereo microscope, a parfocality
measurement method is proposed. First, the mechanical parameters of the focusing system …